CN108317007A - High-power V-shaped 12 cylinder diesel - Google Patents

Abstract

The invention discloses a high-power V-shaped 12-cylinder diesel engine, which includes a V-shaped cylinder body and 12 single cylinder heads; an oil supply system, which includes a left oil pipe and a right oil pipe, which respectively pass through Vertical high-pressure oil pipes are connected to 12 electronically controlled unit pumps; air intake system, which is used to supply fresh air to the high-power V-shaped 12-cylinder diesel engine; lubrication system; and cooling system, which includes high-temperature water circulation loop and low-temperature water circulation circuit, the low-temperature water circulation circuit includes the rear radiator and the low-temperature water pump, the low-temperature water circulation circuit is used to cool the oil cooler, the high-temperature water circulation circuit includes the front radiator and the high-temperature water pump, and the high-temperature water circulation circuit is used to cool the V-shaped cylinder block and 12 single body cylinder head. The body is compact, with high power and high torque.

Description

High-power V-type 12-cylinder diesel engine

technical field

The invention relates to the field of engines, in particular to a high-power V-type 12-cylinder diesel engine.

Background technique

High-power high-speed diesel engines are generally used in generator stations, petrochemicals, high-speed light ships and ships, etc. It is basically a four-stroke engine. Since high-power high-speed diesel engines require very high single-machine power, their strong load requirements are higher than those of ordinary diesel engines. For foreign advanced high-speed diesel engines, their average effective pressure is up to 3MPa, and the highest explosion pressure is the highest. Up to 20MPa. Since the high-power high-speed diesel engine requires high power and high torque, it has relatively high requirements for several important key systems, such as cylinder block assembly system, power system, diesel system, cooling system, lubrication system, etc.

The information disclosed in this Background section is only for enhancing the understanding of the general background of the present invention and should not be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art.

Contents of the invention

The object of the present invention is to provide a high-power V-type 12-cylinder diesel engine with compact body, high power and large torque.

In order to achieve the above object, the present invention provides a high-power V-shaped 12-cylinder diesel engine, comprising: a V-shaped cylinder block, on which 12 cylinder bores in two rows arranged in a V shape are arranged, and the two rows of cylinders The angle between the holes is 90 degrees, and sleeves corresponding to the number of cylinder holes are respectively cast on the V-shaped cylinder blocks outside the two rows of cylinder holes; 12 single-piece cylinder heads are respectively installed on the V-shaped cylinder blocks. Cylinder mouth part; oil supply system, which includes diesel tank, oil supply pipeline and 12 electronically controlled unit pumps, and the 12 electronically controlled unit pumps are respectively installed in the sleeve, and the 12 electronically controlled unit pumps are respectively It is used to control the injection of diesel to each cylinder. The diesel tank is connected with the fuel supply pipeline. The fuel supply pipeline includes the left oil pipe and the right oil pipe. The left oil pipe and the right oil pipe respectively pass through the vertical high pressure oil pipe and 12 electric control The unit pump is connected correspondingly; the air intake system is used to supply fresh air to the high-power V-type 12-cylinder diesel engine; the lubrication system includes the oil pan, pre-supply oil pump, oil pump, oil filter and oil cooler, The oil pan is set at the bottom of the V-shaped cylinder block, the pre-supply oil pump is set at the front side of the oil pan, the oil pump is set at the lower left of the front end of the V-shaped cylinder block, and the oil filter and oil cooler are set at the V-shaped cylinder block. The upper left position of the front end of the shaped cylinder block; and the cooling system, which includes a high-temperature water circulation circuit and a low-temperature water circulation circuit. The low-temperature water circulation circuit includes a rear radiator and a low-temperature water pump. The low-temperature water circulation circuit is used to cool the oil cooler. The high-temperature water circulation circuit includes Front radiator and high-temperature water pump, high-temperature water circulation circuit is used to cool the V-shaped cylinder block and 12 single-piece cylinder heads.

Preferably, pistons with W combustion chambers are arranged in the two rows of cylinder bores of the V-shaped cylinder block, internal cooling oil passages are provided inside the pistons, and four ring grooves are provided on the circumferential walls of the pistons.

Preferably, the intake system includes a left intake pipe, a right intake pipe, a left supercharger, a right supercharger, a left intercooler and a right intercooler, and a left intercooler and a right intercooler The coolers are respectively installed on both sides above the rear end of the V-shaped cylinder block, and the left supercharger and right supercharger are respectively installed above the left intercooler and right intercooler and protrude from the V-shaped cylinder The top of the body, the left air filter is connected to the left supercharger, the right air filter is connected to the right supercharger, the left air intake pipe and the right air intake pipe are respectively connected to the left intercooler After being connected with the right intercooler, it is arranged at the upper end positions on both sides of the V-shaped cylinder block.

Preferably, the low-temperature water pump is arranged at the front end of the V-shaped cylinder block near the position above the oil pump, and the high-temperature water pump is arranged at the front end of the V-shaped cylinder block near the position above the diesel distributor. The low-temperature water pump, high-temperature water pump, oil pump and diesel oil distributor Around the crankshaft pulley, the crankshaft pulley drives the low-temperature water pump and the high-temperature water pump respectively. The coolant flowing through the V-shaped cylinder block and 12 single cylinder heads enters the front radiator through the water outlet main pipe. There are three parallel thermostats connected between them. The thermostat is set at the upper right position of the front end of the V-shaped cylinder block. The thermostat communicates with the front row radiator through the radiator water pipe, and the radiator water pipe is arranged on the V-shaped cylinder block. top.

Preferably, the low-temperature water circulation circuit includes a low-temperature water distributor, which is fixed at the front end of the V-shaped cylinder block near the top of the crankshaft pulley, and the low-temperature cooling water in the low-temperature water pump is distributed to the oil cooler and the left intercooler through the low-temperature water distributor. cooler and right intercooler.

Preferably, the intercooler on the left side and the intercooler on the right side are square shells, the inside of the square shell has an air circulation cavity, the square shell around the air circulation cavity is provided with a coolant flow channel, the square shell There is an additional housing on the front side, an intermediate housing is provided between the left intercooler and the right intercooler, and the two sides of the intermediate housing are respectively connected to the additional housings of the left intercooler and the right intercooler The inner end surfaces of the two are connected together, and the additional shell and the middle shell are provided with a circulation channel that communicates with the coolant flow channel inside the left intercooler and the right intercooler, and the water inlet and outlet of the circulation channel are set in the middle On the front end face of the casing, the water inlet and the water outlet are connected to the low-temperature water distributor through water pipes.

Preferably, the diesel supply system also includes a diesel distributor, which is fixed at the front end of the V-shaped cylinder block, and the diesel in the diesel tank communicates with the left oil pipe and the right oil pipe respectively through the diesel distributor, and the left oil pipe and the right oil pipe respectively communicate with each other. Diesel filters are respectively connected to the oil pipes, and the diesel filters on the left and right sides are respectively installed on both sides of the V-shaped cylinder block.

Preferably, the diesel supply system also includes a fuel delivery pump and a diesel filter, the fuel delivery pump is connected between the diesel tank and the diesel filter, the diesel filter communicates with the left oil pipe and the right oil pipe respectively, and the fuel delivery pump is fixed at V The lower right position of the front end of the V-shaped cylinder block, and the diesel filter is fixed on the right side of the V-shaped cylinder block.

Preferably, the stroke-to-bore ratio of the high-power V-type 12-cylinder diesel engine is 1.1-1.3.

Preferably, the ratio between the center distance of adjacent cylinders and the bore diameter of the high-power V-shaped 12-cylinder diesel engine is 1.3-1.45.

Compared with the prior art, the present invention has the following beneficial effects: by setting a V-shaped cylinder block and 12 single cylinder heads, the diesel supply system realizes double-sided oil supply, and the intake system is equipped with two sets of supercharged intercoolers, compression The air is cooled to further increase its density, which is beneficial to increase the power and performance of the engine. The cooling system uses high and low temperature water for separate cooling, so that high temperature and low temperature components are cooled separately, which can reduce the intake air temperature and engine oil temperature, and reduce heat loss at the same time. The engine is more fuel-efficient and meets the requirements of high power and high torque of the high-power V-type 12-cylinder diesel engine. The body is more compact and strong.

Description of drawings

Fig. 1 is the structural representation of the V-shaped cylinder block of high-power V-type 12-cylinder diesel engine according to the present invention;

Fig. 2 is according to the structural representation of single cylinder head arranged on the V-shaped cylinder block of high-power V-type 12-cylinder diesel engine of the present invention;

Fig. 3 is a kind of complete machine structural diagram of high-power V-type 12-cylinder diesel engine according to the present invention;

Fig. 4 is a structural diagram of a kind of oil supply pipeline in the high-power V-type 12-cylinder diesel engine according to the present invention;

Fig. 5 is the structural diagram of another kind of oil supply pipeline in the high-power V-type 12-cylinder diesel engine according to the present invention;

Fig. 6 is the schematic diagram of the cooling system in the high-power V-type 12-cylinder diesel engine according to the present invention;

Fig. 7 is a structural diagram of an intercooler in a high-power V-type 12-cylinder diesel engine according to the present invention.

Detailed ways

The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

According to a high-power V-type 12-cylinder diesel engine in a specific embodiment of the present invention, in order to meet the requirements of high-power and high-torque high-power high-speed diesel engines, this proposal proposes a high-power V-type 12-cylinder diesel engine, from the cylinder block assembly system , power system, fuel system, cooling system and lubrication system are improved. Using electronically controlled unit pump technology, the injection pressure is large, and the fuel injection volume can be adjusted dynamically and accurately, ensuring that the diesel engine has good atomization, sufficient combustion, good transient speed regulation, strong loading capacity, and low fuel consumption under different load conditions. The lowest fuel consumption rate reaches 195g/kW·h. It adopts one cylinder and one electronically controlled unit pump, with high pressure at the pump end and simple control. It is equipped with a fuel injector with high injection pressure, which has good atomization, sufficient combustion, and low fuel consumption. Each unit pump has a correction code to ensure consistency sex. The design of one cover for each cylinder ensures high strength of the cylinder head. High and low temperature water is used for separate cooling, the low temperature water cools the two intercoolers and the oil cooler, and the high temperature water cools the cylinder block and the cylinder head. And the reasonable arrangement of the diesel supply system, air intake system, lubrication system and cooling system on the body meets the requirements of high strength, high power and large torque, and the body is more compact.

Specifically, as shown in Figures 1 to 3, a high-power V-shaped 12-cylinder diesel engine according to a specific embodiment of the present invention includes a V-shaped cylinder block 100, 12 single cylinder heads 200, a diesel supply system, an air intake system, lubricating system and cooling system, wherein the V-shaped cylinder block 100 is arranged with 12 cylinder holes arranged in a V shape, and the angle between the two rows of cylinder holes of the V-shaped cylinder block 100 is 90 degrees, Sleeves corresponding to the number of cylinder holes are respectively cast on the V-shaped cylinder block 100 outside the two rows of cylinder holes, and 12 single cylinder heads 200 are respectively installed on the cylinder ports of the V-shaped cylinder block 100 . The diesel supply system includes 12 electronically controlled unit pumps 14, diesel tanks and oil supply pipelines, and the 12 electronically controlled unit pumps 14 are respectively installed in the sleeves. Diesel is injected into each cylinder, and the diesel tank communicates with the fuel supply pipeline. This embodiment provides two specific fuel supply pipelines (see below for details). Generally speaking, the oil supply pipeline includes the left oil pipe and the right oil pipe, and the left oil pipe and the right oil pipe are respectively connected to 12 electronically controlled unit pumps through vertical high-pressure oil pipes. The intake system is used to supply fresh air to the high-power V-type 12-cylinder diesel engine. The lubrication system includes an oil pan, a pre-supply oil pump 7, an oil pump 5, an oil filter 2 and an oil cooler 1. The oil pan is set at the bottom of the V-shaped cylinder block 100, and the pre-supply pump 7 is set at the bottom of the oil pan. On the front side, the oil pump 5 is located at the lower left position of the front end of the V-shaped cylinder block 100 , and the oil filter 2 and the oil cooler 1 are located at the upper left position of the front end of the V-shaped cylinder block 100 . The cooling system includes a high-temperature water circulation loop and a low-temperature water circulation loop. The low-temperature water circulation loop includes a rear radiator and a low-temperature water pump 4. The low-temperature water circulation loop is used to cool the oil cooler 1. The high-temperature water circulation loop includes a front radiator and a high-temperature water pump 9. The high-temperature water circulation loop The circuit is used to cool the V-shaped cylinder block 100 and the 12 single-piece cylinder heads.

As a preferred embodiment, the two rows of cylinder bores of the V-shaped cylinder block 100 are provided with pistons with W combustion chambers, internal cooling oil passages are provided inside the pistons, and four ring grooves are provided on the circumferential walls of the pistons. In this solution, the W combustion chamber technology is adopted, the intake air volume is large, the mixing is uniform, the combustion is more complete, and the power range with low fuel consumption is wide. The piston adopts an internal cooling oil channel structure for good cooling, and a four-ring groove structure for better sealing effect.

As shown in Figure 4 and Figure 5, the present embodiment provides two specific diesel supply systems, Figure 4 shows one of the diesel supply pipelines, combined with Figure 3, the diesel supply system includes 12 electronically controlled unit pumps 14 , diesel tank and fuel supply pipeline, 12 electronically controlled unit pumps 14 are used to control injection of diesel oil to each cylinder respectively, the diesel tank is connected with the fuel supply pipeline, and the fuel supply pipeline includes left fuel pipe 43 and right fuel pipe 42 , the right oil pipe 42 and the left oil pipe 43 are respectively connected to 12 electronically controlled unit pumps through the vertical high-pressure oil pipe 46, and the diesel supply system also includes a diesel distributor 49, which is fixed on the V-shaped cylinder block 100 The diesel oil in the diesel tank is connected to the right oil pipe 42 and the left oil pipe 43 respectively through the diesel distributor 49, and the right oil pipe 42 and the left oil pipe 43 are connected to the diesel filter respectively, and the diesel oil filter on the left and right sides The cleaners are respectively installed on both sides of the V-shaped cylinder block 100 (see FIG. 3 , which shows the diesel filter 11 on the right). In this diesel oil supply pipeline, the oil delivery pump 8 (see Fig. 3) pumps the diesel oil into the diesel oil distributor 49 through the oil delivery pipe 41, and the diesel oil in the diesel distributor 49 is divided into two branches and respectively connected with the right oil pipe 42 and the left oil pipe 43. , referring to FIG. 4 , the disconnected joints in the pipelines of the right oil pipe 42 and the left oil pipe 43 are connected to the corresponding diesel filter. The oil pipe 42 on the right side and the oil pipe 43 on the left side are respectively connected to the corresponding electronically controlled unit pump through the vertical high pressure oil pipe 46 and the high pressure connecting pipe 47, and the oil return of the electronically controlled unit pump is respectively passed through the left oil return pipe 45 and the right oil return pipe 44 returns to the overflow valve, which is integrated in the diesel distributor 49. In addition, the high-pressure oil pipe 46 and the high-pressure connecting pipe 47 of this embodiment are fixed on both sides of the V-shaped cylinder block 100 near the cylinder head through the bracket 48 .

As shown in Fig. 5, Fig. 5 shows another kind of diesel oil supply pipeline of the present embodiment, with reference to Fig. 3, the diesel oil supply system also includes a fuel delivery pump 8 and a diesel oil filter 11, and the fuel delivery pump 8 is connected to the diesel tank and the diesel oil Between the filters 11, the diesel in the diesel tank is input into the diesel filter 11 through the oil delivery pump 8 through the oil delivery pipe 31. The diesel filter 11 has two outlets, which are respectively connected with the left oil pipe 32 and the right oil pipe 33, and the oil output Oil pump 8 is fixed on the front end lower right position (referring to Fig. 3) of V-shaped cylinder block 100, and diesel oil filter 11 is fixed on the right side of V-shaped cylinder block 100, and Fig. 3 shows second kind of diesel oil supply pipeline. The left oil pipe 32 and the right oil pipe 33 are respectively connected to the electronically controlled unit pump through the vertical high pressure oil pipe 36 and the high pressure connecting pipe 37 respectively, and the oil return of the electronically controlled unit pump is respectively passed through the left oil return pipe 35 and the right oil return pipe 34 returns to the overflow valve 39. In addition, the high-pressure oil pipe 36 and the high-pressure connecting pipe 37 of this embodiment are fixed on the two sides of the V-shaped cylinder block 100 near the cylinder head through the bracket 38 .

As a preferred embodiment, as shown in FIG. 3 , the intake pipe, supercharger, intercooler, air filter and exhaust pipe that appear in pairs are partially marked in FIG. 3 . The air intake system comprises a left intake pipe, a right intake pipe 15, a left supercharger, a right supercharger 18, a left intercooler and a right intercooler 16, a left intercooler and a right intercooler The coolers 16 are respectively installed on both sides above the rear end of the V-shaped cylinder block 100, and the left side supercharger and the right side supercharger 18 are respectively installed above the left side intercooler and the right side intercooler 16 and are both protruding. On the top of the V-shaped cylinder block 100, the left air filter is connected to the left supercharger, the right air filter 17 is connected to the right supercharger 18, the left air intake pipe and the right air intake pipe 15 is respectively connected with the left side intercooler and the right side intercooler 16 and arranged at the upper end positions on both sides of the V-shaped cylinder block 100 . In addition, the turbo exhaust pipe 19 is arranged on the left side supercharger, and the turbo rear exhaust pipe is also arranged on the right supercharger 18 . In fact, the high-power V-shaped 12-cylinder diesel engine also includes a corresponding exhaust system. The exhaust system includes exhaust pipes 21 (two left and right), and the exhaust pipes 21 (two left and right) correspond to the turbocharger on the left. It is connected with the supercharger on the right side, and the exhaust pipe 21 (two on the left and the right) is arranged at the top middle position of the V-shaped cylinder block 100 .

As a preferred embodiment, the low-temperature water pump 4 is arranged at the front end of the V-shaped cylinder block 100 close to the position above the oil pump 5, the high-temperature water pump 9 is arranged at the front end of the V-shaped cylinder block 100, and the high-temperature water pump 9 and the low-temperature water pump 4 are located at the crankshaft respectively. On both sides above the belt pulley, the low temperature water pump 4, the high temperature water pump 9, the oil pump 5 and the oil delivery pump 8 surround the crankshaft pulley (silicone shock absorber 6 is arranged on the crankshaft pulley), and the crankshaft pulley respectively drives the low temperature water pump 4 and the high temperature water pump 9 , the coolant flowing through the V-shaped cylinder block 100 and the 12 single cylinder heads 200 enters the front row radiator 242 through the water outlet main pipe, and three parallel thermostats 23 are connected between the water outlet main pipe and the front row radiator 242. The thermostat 23 is arranged at the upper right position of the front end of the V-shaped cylinder block 100 , and the thermostat 23 communicates with the front row radiator 242 through the radiator water pipe 20 , and the radiator water pipe 20 is arranged on the top of the V-shaped cylinder block 100 .

As shown in Figure 3 and Figure 6, as a preferred embodiment, the low-temperature water circulation circuit includes a low-temperature water distributor 3, and the low-temperature water distributor 3 is fixed on the front end of the V-shaped cylinder block 100 close to the position above the crankshaft pulley, and the low-temperature water distributor 3 is provided. The purpose is that the low temperature water circulation circuit can cool the oil cooler 1 and the two intercoolers at the same time. So far, as shown in Figure 6, this embodiment proposes to use high and low temperature water for separate cooling, the low temperature water cools the two intercoolers and the oil cooler 1, and the high temperature water cools the cylinder block and the cylinder head. This cooling system belongs to a forced closed cycle For the water cooling system, the coolant should be antifreeze and antirust coolant. High and low temperature water are used for separate cooling, the low temperature water cools the two intercoolers and the oil cooler, and the high temperature water cools the cylinder block and the cylinder head. suitable. In this system, the water pump and fan, radiator, and oil cooler are the main components of the cooling system. When the engine is running, the high and low temperature water pumps are respectively driven by the crankshaft timing gear through the left and right idler gears to drive the impeller of the water pump to rotate. The coolant generates a certain pressure under the centrifugal force of the water pump and flows out from the outlet of the water pump. The coolant pumped out by the high-temperature water pump enters the cooling water jacket of the cylinder block and cylinder head. After cooling the cylinder block and cylinder head, the coolant flows into the water outlet main pipe, and flows into the radiator after passing through the thermostat. The thermostat is installed at the end of the water outlet pipe. The thermostat automatically controls the temperature. When the coolant temperature is higher than 75°C, the thermostat is turned on. When the coolant temperature is higher than 85°C, the thermostat is fully opened. All the liquid enters the radiator and flows back to the water pump. If the coolant temperature is lower than 75°C, it does not need to be cooled by the radiator, but directly flows to the water pump to start the cooling cycle again. The low-temperature water pump cools the two intercoolers and the oil cooler, and then returns to the radiator for heat dissipation. This kind of classified cooling of high temperature and low temperature components can reduce the intake air temperature and engine oil temperature, and at the same time reduce the loss of heat energy, and the engine is more fuel-efficient.

As shown in Figure 7, as a preferred embodiment, this embodiment proposes a specific intercooler structure, the left intercooler and the right intercooler are square shells 501, and the inside of the square shell 501 has The air circulation cavity, the square casing around the air circulation cavity is provided with a coolant flow channel, the front side of the square casing 501 is provided with an additional casing 502, and the left intercooler and the right intercooler are provided with The middle casing 503, the two sides of the middle casing 503 are respectively connected with the inner end surfaces of the additional casing 502 of the left side intercooler and the right side intercooler, the additional casing 502 and the middle casing 503 are provided with The circulation passage connected to the cooling liquid flow passage inside the left intercooler and the right intercooler, the water inlet 504 and the water outlet 505 of the circulation passage are arranged on the front end face of the intermediate housing 503, and the water inlet 504 and the water outlet 505 The water pipe is connected to the low-temperature water distributor, so that the low-temperature cooling water in the low-temperature water pump 4 is distributed to the oil cooler 1 and the left intercooler and right intercooler 16 through the low-temperature water distributor 3 .

In the above scheme, the existing exhaust gas turbocharging technology is adopted. There is a set of independent supercharging and intercooling systems on the left and right sides. When the supercharged engine is working, the exhaust gas from the exhaust pipe of the engine enters the turbine, and the heat energy in the pressure of the exhaust gas makes the turbine rotate and the compressor coaxial with the turbine rotates. The compressor draws and compresses air, which is then ducted into the engine intake, and the cooled and expanded exhaust gases leaving the turbine are directed by the turbine housing to the engine exhaust system and into the atmosphere. After the intake air is compressed, the air density charged into the cylinder is increased. With the good cooperation of the fuel supply system, more fuel can be fully burned, the power is increased, and the economy is improved.

As a preferred embodiment, the stroke-to-bore ratio of the high-power V-type 12-cylinder diesel engine is 1.1-1.3. In this scheme, a smaller stroke-to-bore ratio can be used to reduce the height, width and weight of the diesel engine, increase the speed of the diesel engine, and increase the power of the diesel engine.

As a preferred embodiment, the ratio of the center distance of adjacent cylinders to the bore diameter of the high-power V-shaped 12-cylinder diesel engine is 1.3-1.45. In this solution, the ratio of cylinder center distance to bore diameter is 1.25 to 1.4, the length of the diesel engine is more compact, the degree of reinforcement of the diesel engine is higher, and the rigidity of the crankshaft and the body is stronger. As the length of the crankshaft is shortened, the torsional rigidity is enhanced, the natural vibration circular frequency of the shaft system is increased, and the torsional vibration performance is improved.

To sum up, the high-power V-shaped 12-cylinder diesel engine of this embodiment is provided with a V-shaped cylinder block 100 and 12 single cylinder heads 200, the diesel supply system realizes double-sided oil supply, and the intake system is equipped with two sets of supercharged intercoolers. The compressed air is cooled to further increase its density, which is beneficial to increase the power and performance of the engine. The cooling system uses high and low temperature water for separate cooling, so that high temperature and low temperature parts are cooled separately, which can reduce the intake air temperature and engine oil temperature, and at the same time reduce Heat energy loss, the engine is more fuel-efficient, meets the requirements of high-power and high-torque high-power high-speed diesel engines, and the body is more compact and strong.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling others skilled in the art to make and use various exemplary embodiments of the invention, as well as various Choose and change. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (10)

1. A high-power V-type 12-cylinder diesel engine is characterized in that, comprising: V-shaped cylinder block, the V-shaped cylinder block is arranged with 12 two rows of cylinder holes arranged in a V shape, the angle between the two rows of cylinder holes is 90 degrees, and the V-shaped cylinders outside the two rows of cylinder holes Sleeves corresponding to the number of cylinder holes are respectively cast on the body; 12 single cylinder heads, which are respectively installed on the cylinder port of the V-shaped cylinder block; A diesel supply system, which includes a diesel tank, an oil supply pipeline, and 12 electronically controlled unit pumps, the 12 electronically controlled unit pumps are respectively installed in the sleeves, and the 12 electronically controlled unit pumps are respectively Used to control the injection of diesel oil to each cylinder, the diesel tank communicates with the oil supply pipeline, the oil supply pipeline includes a left oil pipe and a right oil pipe, and the left oil pipe and the right oil pipe respectively pass through The vertical high-pressure oil pipe is correspondingly connected to the 12 electronically controlled unit pumps; Intake system, which is used to supply fresh air to the high-power V-type 12-cylinder diesel engine; Lubrication system, which includes an oil pan, a pre-supply oil pump, an oil pump, an oil filter and an oil cooler, the oil pan is arranged at the bottom of the V-shaped cylinder block, and the pre-supply oil pump is arranged at the On the front side of the oil pan, the oil pump is located at the lower left of the front end of the V-shaped cylinder block, and the oil filter and the oil cooler are both located at the upper left of the front end of the V-shaped cylinder block location; and Cooling system, which includes a high-temperature water circulation circuit and a low-temperature water circulation circuit, the low-temperature water circulation circuit includes a rear radiator and a low-temperature water pump, the low-temperature water circulation circuit is used to cool the oil cooler, and the high-temperature water circulation circuit includes a front radiator device and a high-temperature water pump, and the high-temperature water circulation loop is used to cool the V-shaped cylinder block and the 12 individual cylinder heads. 2. The high-power V-type 12-cylinder diesel engine according to claim 1, wherein a piston with a W combustion chamber is arranged in the two rows of cylinder bores of the V-shaped cylinder block, and the inside of the piston has internal cooling oil. Road, the circumferential wall of the piston is provided with four ring grooves. 3. The high-power V-type 12-cylinder diesel engine according to claim 1, wherein the intake system comprises a left intake pipe, a right intake pipe, a left supercharger, a right supercharger, a left a side intercooler and a right intercooler, the left intercooler and the right intercooler are respectively installed on both sides above the rear end of the V-shaped cylinder block, the left supercharger and The right supercharger is correspondingly installed above the left intercooler and the right intercooler and protrudes from the top of the V-shaped cylinder block, and the left supercharger is connected with The left air filter is connected with the right air filter on the right supercharger, and the left air intake pipe and the right air intake pipe are connected with the left intercooler and the right air intake pipe respectively. After the side intercooler is switched on, it is arranged at the upper ends of both sides of the V-shaped cylinder block. 4. The high-power V-shaped 12-cylinder diesel engine according to claim 3, wherein the low-temperature water pump is arranged at the front end of the V-shaped cylinder block near the position above the oil pump, and the high-temperature water pump is arranged at The front end of the V-shaped cylinder block is close to the position above the diesel distributor, and the low-temperature water pump, the high-temperature water pump, the oil pump and the diesel distributor surround the crankshaft pulley, and the crankshaft pulley respectively Drive the low-temperature water pump and the high-temperature water pump, the coolant flowing through the V-shaped cylinder block and the 12 individual cylinder heads enters the front radiator through the water outlet main pipe, the water outlet main pipe and the front radiator There are three parallel thermostats connected between the radiators, and the thermostats are arranged at the upper right position of the front end of the V-shaped cylinder block, and the thermostats are connected to the front radiator through the radiator water pipe The radiator water pipe is arranged on the top of the V-shaped cylinder block. 5. The high-power V-shaped 12-cylinder diesel engine according to claim 4, wherein the low-temperature water circulation circuit includes a low-temperature water distributor, and the low-temperature water distributor is fixed on the front end of the V-shaped cylinder block close to the crankshaft At the position above the pulley, the low-temperature cooling water in the low-temperature water pump is distributed to the oil cooler, the left intercooler and the right intercooler through the low-temperature water distributor. 6. The high-power V-type 12-cylinder diesel engine according to claim 5, wherein the left side intercooler and the right side intercooler are square shells, and the inside of the square shell has air Circulation cavity, the square casing around the air circulation cavity is provided with coolant flow channels, the front side of the square casing is provided with an additional casing, the left intercooler and the right intercooler An intermediate casing is provided between the intercoolers, and the two sides of the intermediate casing are respectively connected with the inner end surfaces of the additional casings of the left intercooler and the right intercooler, and the additional casing A circulation passage communicated with the coolant flow passage inside the left intercooler and the right intercooler is provided in the middle housing, and the water inlet and outlet of the circulation passage are arranged in the middle On the front end face of the casing, the water inlet and the water outlet are connected to the low-temperature water distributor through water pipes. 7. The high-power V-type 12-cylinder diesel engine according to claim 1, characterized in that, the diesel fuel supply system also includes a diesel distributor, and the diesel distributor is fixed on the front end of the V-shaped cylinder block, the The diesel oil in the diesel tank passes through the diesel distributor and communicates with the left oil pipe and the right oil pipe respectively, and the left oil pipe and the right oil pipe are respectively connected to diesel filters, and the left and right oil pipes are respectively connected to diesel filters. Diesel filters are respectively installed on both sides of the V-shaped cylinder block. 8. The high-power V-type 12-cylinder diesel engine according to claim 1, wherein the diesel supply system also includes a fuel pump and a diesel filter, and the fuel pump is connected to the diesel tank and the diesel oil filter. Between the filters, the diesel filter communicates with the left oil pipe and the right oil pipe respectively, the oil transfer pump is fixed at the lower right position of the front end of the V-shaped cylinder block, and the diesel oil filter The device is fixed on the right side of the V-shaped cylinder block. 9. The high-power V-type 12-cylinder diesel engine according to claim 1, wherein the stroke-to-bore ratio of the high-power V-type 12-cylinder diesel engine is 1.1-1.3. 10. The high-power V-type 12-cylinder diesel engine according to claim 1, characterized in that the ratio of the center-to-center distance of adjacent cylinders to the bore diameter of the high-power V-type 12-cylinder diesel engine is 1.3-1.45.