JPH01500210A - Ignition controlled mixed combustion cycle engine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Ignition controlled mixed combustion cycle engine The present invention relates to an ignition controlled mixed combustion cycle engine such as that described in Patent No. 84574. Regarding gin.

The engine that is the subject of the above patent has a second cylinder located near the end of the cylinder corresponding to top dead center. and a third cylinder. The second cylinder is integral with the first cylinder. In addition, the third cylinder is connected to the first cylinder via a communication path. 2nd o and a piston is provided in the third cylinder to change the cylinder volume. fuel mixture injection An injection device and an ignition device are provided within the third cylinder. In this patent, the second and The pistons of the 3 cylinders are placed 180'' apart from each other on the small crankshaft. A reciprocating motion is performed by a crank placed on the machine. This crankshaft is a camshaft together with the bolt and the connector form a transmission chain means.

The main purpose of the present invention is to increase the reliability and performance of the aforementioned engine, and to improve the actual performance of the engine. It is to solve problems in the production process.

To achieve this objective, a preferred engine according to the invention has three cylinders. These axes are combined to form a triangle, and two cranks are installed inside the crankcase. It is configured so that the rank shafts can be arranged in parallel. Each cylinder corresponds to It is equipped with a piston. 'The piston of fS1 is interlocked in the first cylinder and The process of filling, compressing, expanding, and exhausting is performed. This first piston is connected via a connecting rod It is coupled to a first crankshaft within the crankcase. 382 piston is The combustion chamber volume is changed in conjunction within the second cylinder. This combustion chamber has two ignition spark plugs. Lugs and fuel injection nozzles are provided. The third piston is in the third cylinder Exercise to change the volume of the air chamber. The second and third pistons are located in the crankcase connecting rods mounted on the second crankshaft, each 180"ll from each other within more driven. The first crankshaft is housed on the cylinder block. The second crankshaft is connected to the connected to the shaft. An acceleration controller acts on the coupling in a known manner to control the two clamps. Change the angle settings between the shafts.

The invention is applicable to both 2-stroke and 4-stroke engines. .

A two-stroke engine is shown as an example of a preferred embodiment of the present invention. Either The case will also be fully understood from the detailed description below with reference to the accompanying drawings.

FIG. 1 is a partial view showing the A-A cross section of the two-stroke engine constructed according to the present invention: FIG. 2 is a partial view showing the BB cross section of the two-stroke engine according to the present invention: FIG. 3 shows an A'-A' cross section of a two-stroke engine according to an embodiment of the present invention. Partial view: FIG. 4 shows a two-stroke engine according to the present invention taken from A-A in FIGS. 1 and 2. and a plan view of the crankcase gasket in a plane parallel to line B-B; FIG. 5 shows a two-stroke engine according to another embodiment of the present invention. FIG. 3 is a plan view of the gasket of the crankcase in a section parallel to the plane;

The engine according to the present invention has two cranks out of three sides of a triangle as shown in the drawing. The second and third cylinders 7.13 are mounted on one side parallel to the axis of the shaft 4.17. It is equipped. The two opposite sides of the triangle containing the second and third cylinder fins, 13 The first cylinder 2 is arranged at the position of the apex angle where they intersect. 3 cylinders 2, 7.1 Pistons 1, 6 and 12 each slide in 3, and holes corresponding to these cylinders are 2. one of two crankshafts 4 or 17 and engine oil crankcase It is provided at the bottom of the cylinder block 5 at a position facing the cylinder block 18.

The two crankshafts 4.17 are fitted with corresponding systems arranged in positions forming a triangle. Since it is aligned with cylinders 2, 7, and 13, the three crankbins to be fixed are The rotating surface of the first crankshaft 4 is the same as the rotating surface of the bin of the first crankshaft 4. 17 between the rotating surfaces of the two bins. Ranked like this Due to the fixed arrangement of the two crankshafts 4.17, the distance between the axes and the distance between the three It is possible to reduce the distance between the center axes of cylinders 2, 7, and 13, and therefore This has the effect that the volume of the cylinder block 5 can be reduced.

In this preferred method of engine assembly, two crankshafts 4 and A pair of gears 19 and 20 are provided on a part of the cylinder block 5 as a means of transmitting motion between the cylinder blocks 17 and 17. The first gear 19 on the output shaft of the first crankshaft 4 is connected to the second gear 2 Drive 0. When a connector (not shown) is installed on the cylinder block, the connector The input drive shaft of the connector case engages with the second gear 20, and the output drive shaft of the connector case engages with the output shaft of the second crankshaft 17. A known means is used as a connector case. As a result, the set value of the angular difference between the two crankshafts 4 and 17 is changed.

A further object of the invention is to provide means for assembling three cylinders 2, 7.13. be. Each cylinder is an open ended cylinder consisting of two components 22 and 23. The first component 22 of the cylinder 2°7.13 is drilled directly into the cylinder block 5. Alternatively, the liner may be fitted into a suitable recess provided in the cylinder block 5. and a ring-shaped pressure seal, such as the seal 28 of the cylinder block 5 shown, is attached to each It may also be provided on top of the liner within the recess. Opposite side of joint of image components 22 and 23 The second component 23 of the cylinder 2,7° 13 is closed at the end of the cylinder head 2 4 or a suitable recess provided in this cylinder head 24. A liner such as the seal 27 of the cylinder head 24 shown is fitted within the cylinder head. A ring-like pressure seal may be provided at the bottom of the liner within each recess.

The cylinder block 5 and cylinder head 24 liner are integrally formed. Good too.

Seals 27 and 28 of cylinder head 24 and cylinder block 5 When the surfaces are joined, the first and second components 22 and 23 are aligned and the three Form cylinder 2.7.13.

While the engine is running, the first piston 1 is rotated by the rotation of the first crankshaft 4. reciprocates within said first and second components 22.23 of the first cylinder 2. . The rotation of the second crankshaft 17 causes the second and third cylinders 7.13 to The two pistons 6.12 in the first and second components 22.23 corresponding to Perform mutually opposite reciprocating movements.

Regarding distribution, at the bottom of the second component 23 of the first cylinder 2, the cylinder head 2 4 and communicates with the cylinder 2 via two valves 30 and 30'. 3 is provided. These valves have the same speed as one crankshaft 4 or 17 It is driven by a camshaft 31 that is driven by.

A suction boat 32 is provided on the circumferential side of the first cylinder 2 and is opened by the first piston 1. close

In the engine structure according to the present invention, there are three cylinders in the free space within the cylinder head 24. holes are provided. One is for the fuel injector 11, the other two are for the point It is for fire plugs. The first spark plug 9 is located around the opposite side of the distribution chamber connecting portion 260. The second ignition plug 10 is provided at the distribution chamber connecting portion 26 and is provided at the edge. burn the fuel mixture more completely.

In the present invention, two crankshafts 4.17 in the cylinder block 5 are Positioning means are provided for positioning the upper side of the segments of the three pistons 1, 6 and 12. The first component 2 of the three cylinders 2.7.13 of the cylinder block Protrude from 2 without showing the segment. These three pistons 1,6.12 The head protrusion amount is the second configuration of each of the three cylinders 2, 7.13 of the cylinder head. It corresponds to the internal space of element 23.

Furthermore, a recess is formed in the sealing surface of the gasket 27 of the cylinder head 24. In order to permanently communicate the combustion fluid between the three cylinders 2, 7° 13 constitutes the means of This recess 26 is a triangle consisting of three cylinders 2, 7, 13 located in the center of the three cylinders 2.7° through the wall thickness of the second component 23 of 13 do. As a result, the cylinder head 24 and the gasket 27 of the cylinder block 5 Three cylinders that communicate between the three cylinders 2゜7.13 when the surfaces of The distribution chamber 26 includes a fuel mixture communication passage.

This distribution chamber 26 has three communication passages with a large cross-sectional area, and has three communication passages for compression, combustion, and expansion. In each process, a large amount of combustion fluid is passed between the three cylinders 2.7.13 in a fast cycle. The transfer will be carried out smoothly. In another aspect of the present invention, three Means for alternately communicating between the cylinders 2, 7, and 13 is provided. This goes to the cylinder It is formed on the sealing surface of the gasket 27 of the head 24 and the three cylinders 2, 7°1 It consists of another recess 26 located within a triangle of 3, this recess 26 The cylinder head 24 and the bottom of the second component 23 of the cylinder 2 are not reached. When the gasket 2 face of the cylinder block 5 and the sealing surface of 28 are combined, this The recesses 26 of the three cylinders 2, 7. A distribution chamber 26 having a communication path is formed. The piston 1 of the first cylinder 2 is Distribution connection from the distribution chamber 26 located on the wall of the second component 23 of the first cylinder 2 Depending on whether the passage is closed or open, the first cylinder 2 and the second cylinder 2. 3rd cylinder 7. The passage between 13 closes and opens.

This alternating opening and closing operation is performed after each fuel injection process, and during the compression process before combustion. Introducing air into the combustion chamber 8 to provide the necessary delay time to homogenize the mixture is ending early.

When the engine is operating at partial load, the compression of the air-fuel mixture in cylinder 2 and the M 2. The flow of the air-fuel mixture into the combustion chamber 8 and air chamber 14 of the third cylinder 7.13 is This continues until the communication path to the first cylinder 2 is closed. remaining in the first cylinder 2. The mixture that remains is between the top of the first piston 1 and the bottom of the first cylinder 2 at top dead center. is compressed within the space 29 of . This compression is greater than the compression ratio of cylinders 7 and 13. This is done with a high compression ratio. In the expansion process, at the same time as the communication passage opens, the combustion inside the combustion chamber 8 The incineration gas and the compressed air in the air chamber 14 are mixed through the distribution chamber 26 to the first cylinder. It squirts inside Da2. This mixed gas is expanded at the compression ratio of cylinders 7 and 13. It is further diluted by the air in the space 29.

During full load operation of the engine, the air compression in cylinder 2 and the second cylinder The inflow action of the cylinder 7 into the combustion chamber 8 continues until the communication passage of the first cylinder 2 is closed. , the air fluid remaining in the first cylinder 2 is between the top of the piston 1 at top dead center and the first cylinder 2. It is compressed in the space 29 between it and the bottom of the cylinder 2. This compression is cylinder 7.13 The compression ratio is greater than the compression ratio of . During the expansion stroke, the communication passage for combustion gas is opened. At the same time, it is ejected from the combustion chamber 8 into the first cylinder 2 via the distribution chamber 26. this The gas is caused by the air fluid in the space 29 expanded by the compression ratio of the cylinders 7 and 13. Diluted.

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Claims (1)

[Claims] 1. installed on the crankshaft (4) located inside the cylinder block (5). comprising at least one cylinder (2) having a piston (1), the cylinder comprising: In cooperation with the second cylinder (7) and the third cylinder (13), these second, The third cylinder regulates the volume of both the combustion chamber (8) and the air chamber (14), respectively. a piston (one of 6 and 12) for fuel injection means and ignition means; In the ignition controlled mixed combustion cycle engine, which is provided in the second cylinder 7, , cylinders such that the axes of the three cylinders (2, 7, 13) form a triangle. the crankshaft (4) and the cylinder block (5). and both pistons (6 and 6) via two crank pins 180° apart from each other. The crankshaft (17) that gives reciprocating motion to An ignition-controlled mixed combustion cycle engine characterized by: 2. Both the second and third cylinders (7, 13) are located on one of the three sides of the triangle. arranged on one side parallel to the axes of the two crankshafts (4, 17); The apex formed by the other two sides of the triangle opposite to the side containing the second and third cylinders (7, 13) A first cylinder (2) is arranged at a corner position, and each piston (1, 6, 12) is slid. The holes corresponding to the three cylinders (2, 7, 13) are located on one crankshaft ( 4 or 17) and the cylinder block facing the engine oil reservoir (18). The two crankshafts (4, 17) are triangular. It is arranged corresponding to the axis of the cylinder (2 and 7, 13) arranged in The rotating surfaces of the three crank pins can be arranged close to each other, and the first crankshaft The rotating surface of the pin of the first crankshaft (4) is the same as the rotating surface of both pins of the second crankshaft (17). The two crankshafts (4, 1 7) and the distance between the center axes of the three cylinders (2, 7, 13). A claim characterized in that the overall shape of the cylinder block (5) is reduced in size. The engine according to range 1. 3. The cylinder block transmits the drive between the two crankshafts (4, 17). (5) through a pair of gears (19 and 20) provided in a part of the first crank. The first gear (19) coaxial with the drive shaft of the rank shaft (4) is connected to the second gear (2 0) as follows, i.e. connected on the cylinder block (5) When the connector is attached, the drive shaft input side of the connector case is connected to the second gear 20. The drive shaft output side of the driven connector case is connected to the second crankshaft (17). The device according to claims 1 and 2, characterized in that it serves as a driving output shaft. Njin. 4. comprising means for assembling said three cylinders (2, 7, 13), each cylinder having two consisting of two components (22 and 23), the first of the cylinders (2, 7, 13) The component (22) is open at both ends and formed by directly drilling into the cylinder block (5). or by a liner fitted into a suitable recess in the cylinder block (5). A pressure seal is provided in a ring shape on the top of the liner and in the cylinder block. The cylinder (2, The second component (23) of 7, 13) is the joint of the two components (22, 23) is closed at the opposite end and formed by drilling directly into the cylinder head (24) or Consisting of a liner fitted into a suitable recess in the cylinder head (24), the pressure A force seal is provided in the form of a link at the bottom of the liner and attached to the cylinder head (24). The cylinder block (5) and cylinder The liner that fits into the head (24) may be one piece, or if it is not one piece, If the gasket surfaces of the cylinder head (24) and cylinder block (5) When coupled, the first and second components (22, 23) align their axes with each other and Claim 1 characterized in that it forms two cylinders (2, 7, 13). 3. 5. The free space within the cylinder head is used to contain three fixed position holes. one hole is for the fuel injector (11) and the other two are for the ignition brush. The first ignition plug (9) is opposite to the communication part with the distribution chamber (26). The second ignition plug (10) is provided at the side peripheral edge, and the second ignition plug (10) is connected to the distribution chamber (26). It is characterized by being arranged nearby so that the fuel mixture can be more completely combusted. An engine according to any one of claims 1 to 4. 6. The two crankshafts (4, 17) are connected to the three pistons (1, 6). , 12) of the cylinder block (5) without showing the ring part. such that the three cylinders (2, 7, 13) protrude from the first component 22; The protrusion amount of the heads of these three pistons (1, 6, 12) is The second component of the three cylinders (2, 7, 13) in the cylinder head (24) Claims 1 to 23 correspond to the installation space of 23). Engines listed in any of items up to item 5. 7. A recess is formed in the sealing surface of the gasket (27) of the cylinder head (24). to permanently communicate working fluid between the three cylinders (2, 7, 13); This recess (26) has a triangular shape formed by three cylinders (2, 7, 13). Second component (23) located in the center and of the three cylinders (2, 7, 13) The cylinder head (24) is formed by penetrating the wall to that depth. and the sealing surfaces of the gaskets (27 and 28) of the cylinder block (5) Transfer working fluid between the three cylinders (2, 7, 13) when they are coupled This structure is configured to form a distribution chamber (26) having three communication paths for An engine according to any one of claims 1 to 6, characterized in that: 8. A recess is formed in the sealing surface of the gasket (27) of the cylinder head (24). to permanently alternately communicate the working fluid between the three cylinders (2, 7, 13) This recess 26 has a triangular shape formed by three cylinders (2, 7, 13). and this recess (26) is located in the center of the cylinder (7 and 13) only. The second component (23) of the three cylinders (2, 7, 13) to reach the bottom of the ), so that this recess (26) is formed through the wall of the cylinder head ( 24) and the seals of the gaskets (27 and 28) of the cylinder block (5) Transferring working fluid between the three cylinders (2, 7, 13) when the surfaces are joined It is configured to form a distribution chamber (26) having three communicating paths for feeding. The engine according to any one of claims 1 to 6, characterized in that hmm. 9. Connection between the first cylinder (2) and the second and third cylinders (7, 13) The passage is such that the piston (1) of the first cylinder (2) is connected to the second piston (1) of the first cylinder (2). The communication path of the distribution chamber 26 located on the wall of the component (23) is opened or closed. The alternating interconnection action after each fuel injection in the compression stroke The configuration is configured to end air transfer to the combustion chamber 8 early to homogenize the air-fuel mixture before combustion. Claim 8, characterized in that the delay time necessary for engine.