WO1998027332A1 - Air vent construction of subtank in engine - Google Patents
Air vent construction of subtank in engine Download PDFInfo
- Publication number
- WO1998027332A1 WO1998027332A1 PCT/JP1997/004699 JP9704699W WO9827332A1 WO 1998027332 A1 WO1998027332 A1 WO 1998027332A1 JP 9704699 W JP9704699 W JP 9704699W WO 9827332 A1 WO9827332 A1 WO 9827332A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- tank
- sub
- air vent
- intake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/007—Layout or arrangement of systems for feeding fuel characterised by its use in vehicles, in stationary plants or in small engines, e.g. hand held tools
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
- F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/20—Multi-cylinder engines with cylinders all in one line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
- F02M35/112—Intake manifolds for engines with cylinders all in one line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
- F02M35/165—Marine vessels; Ships; Boats
- F02M35/167—Marine vessels; Ships; Boats having outboard engines; Jet-skis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B2075/1804—Number of cylinders
- F02B2075/1816—Number of cylinders four
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/20—SOHC [Single overhead camshaft]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
Definitions
- the present invention relates to an engine having a sub-tank for temporarily storing fuel supplied to a fuel injection valve, and an air vent pipe having one end communicating with an upper space of the sub-tank and the other end communicating with an intake system.
- it concerns the air vent structure of the sub tank.
- Japanese Patent Laid-Open Publication No. Heisei 3 (1994) -66465 discloses a structure in which an upper space of a sub-tank for temporarily storing fuel supplied to a fuel injection valve is connected to a vicinity of a throttle valve through an air vent pipe.
- No. 8 discloses it.
- the present invention has been made in view of the above circumstances, and has as its object to provide an air vent structure for a sub tank that can appropriately process fuel vapor discharged from the sub tank to an intake system.
- a sub-tank for temporarily storing fuel to be supplied to a fuel injection valve, one end of which is communicated with an upper space of the sub-tank, and the other end of which is suctioned.
- the other end of the air vent pipe is communicated with the intake silencer provided upstream of the throttle body in the direction of intake air flow, so that the fuel discharged from the sub tank to the intake silencer when the engine is stopped. Even if it liquefies, the fuel can be captured by an intake silencer with sufficient volume to prevent it from flowing out. You.
- a pair of air vent passages one end of which is open to the upper space of the sub tank and the other end of which is connected to a pair of air vent pipes, are provided in the sub tank.
- An air vent structure for a sub-tank in an engine wherein the air vent structure is formed at an upper portion of a sub-tank and is arranged so that the pair of air vent passages cross each other at an intermediate portion.
- a pair of air vent passages one end of which opens into the upper space of the sub tank and the other end is connected to the pair of air vent pipes, are formed in the upper portion of the sub tank, and the pair of air vent passages are formed at an intermediate portion. Since it is arranged so as to intersect the fuel, not only does fuel flow out due to gravity even if the engine is turned down, it also prevents the fuel in the sub-tank from being pushed out into the intake system by internal pressure.
- FIGS. 1 to 9B show an embodiment of the present invention.
- FIG. 1 is an overall side view of an outboard motor
- FIG. 2 is an enlarged sectional view taken along the line 2-2 of FIG. 1
- FIG. 4 is a view in the direction of arrow 4 in FIG. 3
- FIG. 5A to FIG. 5D are views showing the shape of each intake pipe
- FIG. 6 is a sectional view taken along line 6-6 in FIG. 3
- FIG. Fig. 8 is an enlarged cross-sectional view of the main part in Fig. 3
- Fig. 8 is a view in the direction of arrow 8 in Fig. 7
- Fig. 9A is a cross-sectional view along line 9A-9A in Fig. 8
- Fig. 9B is a line 9B-9B in Fig. Sectional view.
- the outboard motor O includes a mount case 2 coupled to an upper portion of an extension case 1, and a water-cooled in-line 4-cylinder 4-cycle engine E is mounted on a top surface of the mount case 2 with a crankshaft. 15 is supported vertically.
- An under case 3 having an open upper surface is connected to the mount case 2, and an engine cover 4 is detachably mounted on an upper portion of the under case 3.
- An under cover 5 is mounted between the lower edge of the under case 3 and the edge near the upper end of the extension case 1 so as to cover the outer side of the mount case 2.
- Engine E is equipped with a cylinder block 6, a crankcase 7, a cylinder head 8, a head cover 9, a lower belt cover 10 and an upper belt cover 11, The lower surfaces of the cylinder block 6 and the crankcase 7 are supported on the upper surface of the mount case 2.
- a piston 13 is slidably fitted to each of the four cylinders 12 formed on the cylinder block 6, and each piston 13 is vertically arranged via a connecting rod 14. Connected to axis 15
- the drive shaft 17 connected to the lower end of the crankshaft 15 together with the flywheel 16 extends downward inside the extension case 1, and the lower end has a bevel gear mechanism 1 provided inside the gear case 18.
- Via 9 is connected to a propeller shaft 21 having a propeller 20 at the rear end.
- a lower end of a shift rod 22 is connected to a front portion of the bevel gear mechanism 19 so as to switch the rotation direction of the propeller shaft 21.
- a swivel shaft 25 is fixed between the upper mount 23 provided on the mount case 2 and the lower mount 24 provided on the extension case 1, and a swivel case 26 rotatably supporting the swivel shaft 25.
- Force The stern S is supported by a stern bracket 27 attached to the stern S via a tilt shaft 28 so as to be vertically swingable.
- the lower surface of the mount case 2 and the oil pan 2 9 and the exhaust pipe 3 0 is coupled.
- the exhaust gas discharged from the exhaust pipe 30 into the internal space of the extension case 1 passes through the internal space of the gear case 18 and the inside of the boss of the propeller 20 and is discharged into the water.
- the engine E housed in the engine room 36 defined by the under case 3 and the engine cover 4 has two secondary balancer shafts arranged in parallel with the crankshaft 15. 37, 38 and one cam shaft 39.
- the secondary balancer shafts 37, 38 are supported by the cylinder block 6, which is closer to the cylinder head 8 than the crankshaft 15, and the cam shaft 39 is aligned with the cylinder head 8 and the head cover 9 Supported on the surface.
- a pulley assembly 4 that integrates a camshaft drive pulley 40, a secondary balancer single shaft drive pulley 41, a generator drive pulley 42, and a cooling fan 43 is integrated. 4 is fixed.
- the camshaft driven pulley 45 fixed to the upper end of the camshaft 39 and the power shaft drive pulley 40 are connected by an endless belt 46.
- the diameter of the camshaft drive pulley 40 is set to half the diameter of the camshaft driven pulley 45, so that the power shaft 39 rotates at half the speed of the crankshaft 15.
- Pivoted on pins 4 7 A tension pulley 49 provided at one end of the arm 48 is pressed against the outer surface of the endless belt 46 by the resilience of a spring 50, whereby a predetermined tension is applied to the endless belt 46.
- the shaft drive pulley 41 is connected by an endless belt 54.
- a tension pulley 57 provided at one end of an arm 56 pivotally supported by a pin 55 is pressed against the outer surface of the endless belt 54 by the elastic force of the spring 58, whereby the endless belt 54 is provided.
- a predetermined tension is applied to the belt 54.
- the intermediate shaft 52 and one of the secondary balancers—the shaft 37 are connected by a pair of gears (not shown) having the same diameter, and the diameter of the secondary balancer shaft driving pulley 41 is the same as that of each secondary balancer.
- the diameter is set to twice the diameter of the shaft driven pulleys 52, 53, so that the pair of secondary balancer shafts 37, 38 rotate in opposite directions at twice the speed of the crank shaft 15.
- the generator 62 is supported by two ports 61, 61 on a bracket 60 fixed to the upper surface of the crankcase ⁇ by two ports 59, 59.
- a generator driven pulley 6 4 fixed to the rotating shaft 6 3 of the generator 6 2 and the generator drive pulley 4 2 are connected by an endless belt 6 5, and the generator 6 2 is driven by the crankshaft 15.
- the engine hanger 66 When suspending the outboard motor O, the engine hanger 66 with which the chain block or the hook of the crane is engaged has two ports 6 7, 6 between the cam shaft 39 and the other secondary balancer shaft 38. Fixed by 6 7 The position of the engine hanger 1-6 is located slightly behind the center of gravity of the outboard motor O. It is considered so that it can be easily attached to and detached from the stern S.
- the three belts 46, 54, 65 that drive the cam shaft 39, the secondary balancer shafts 37, 38, and the generator 62 are connected to the lower belt cover 10 and the upper belt cover 11, respectively. It is housed inside the defined belt chamber 68.
- the lower belt cover 10 has an opening 10 surrounding the generator 62 and a plurality of slits 10 2 ... On the right bottom wall of the crankshaft 15. Air is introduced into the belt chamber 68 through the slits 102 and the slits 102.
- the upper end of the engine hanger 6 6 projects upward through the upper belt cover 11.
- a pair of left and right slit-shaped air intakes 4 i are formed on the upper rear surface of the engine cover 4, and these air intakes 4 i are formed.
- a guide plate 75 extending forward from the lower edge of 4e is fixed to the inner surface of the engine cover 4. Therefore, the air taken in from the air intakes 4 and 4 flows forward through the space between the upper wall of the engine cover 4 and the guide plate 75, and the engine flows from the front edge of the guide plate 75. Flows into room 36.
- a ventilation duct 75 i (see FIG. 4) is formed on the right side of the guide plate 75, and the lower end of the ventilation duct 75 is formed in an opening 1 formed on the right side of the upper belt cover 11. communicated with, the upper end thereof communicates with the opening 4 2 formed on the upper right side of the engine cover 4. From this ventilation duct 75, the belt chamber 68 surrounded by the lower belt cover 10 and the lower belt cover 11 communicates with outside air to perform ventilation.
- An intake silencer 76 is fixed to the front of the crankcase 7 with three bolts 77.
- the intake silencer 76 includes a box-shaped main body 78 and a duct 79 connected to the left side of the main body 78.
- Duct 7 9 is provided with a suction opening 7 9 E which opens facing downward at its lower end, provided with a communicating hole 7 9 2 communicating between internal space of the main body portion 7 8 at its upper end.
- the throttle body 80 disposed on the right side of the main body portion 78 of the intake silencer 76 is connected to the main body portion 78 via a flexible intake duct 35.
- the throttle body 80 is connected and fixed to an intake manifold 85 described below.
- An intake manifold 85 integrally provided with a helpo 81, a surge tank 82, four intake pipes 83a, 83b, 83c, 83d and a mounting flange 84. It is located along the right side of Engine E. Elpo 81 changes the intake air flow from the flow along the front of the crankcase 7 to the flow along the right side of the crankcase 7 by approximately 90 °.
- the surge tank 82, the suction pipes 83a, 83b, 83c, 83d, and 83d for supporting and fixing the slotted body 80 may be used. It is integrated with the mounting flange 84.
- connection between the intake manifold 85 and the surge tank 81 and the surge tank 82 is smaller in the vertical direction than the upper and lower ends of the surge tank 82, and at this point the port 86 6 86 86 2 , 86 2 and two brackets 86 3 , 863 having a screw hole are fixed to the right side wall of the crankcase 7, and the mounting flange 84 is further fixed to the cylinder head 8 by a plurality of ports 87.
- the first intake pipe 83a which is the first from the top, extends substantially horizontally along the lower surface of the lower belt cover — 10, but the second to fourth, the second to fourth, from the top.
- the intake pipes 83b to 83d are arranged so as to be inclined forward and upward from the mounting flange 84 toward the surge tank 82.
- the inclination angle of the fourth intake pipe 83d is large, and the third intake pipe 83c. Is moderately large and the second intake pipe 83b is small.
- the intake pipes 83b, 83c, 83d By arranging the intake pipes 83b, 83c, 83d at an angle in this manner, the fuel blown back into the intake pipes 83b, 83c, 83d from the fuel injection valves 94, which will be described later, by gravity. Not only can it be quickly returned into the cylinders 12, but also a space can be secured below the surge tank 82 and the fourth intake pipe 83d, and a high-pressure fuel supply means described later can be arranged in that space.
- the lengths of the intake pipes 83a, 83b, 83c, 83d have a large effect on the output of the engine E due to the pulsation effect of the intake system.
- the horizontal first intake pipe 83a has the shortest pipe length
- the fourth intake pipe 83d having a large inclination angle has the longest pipe length. Therefore, in the present embodiment, the positions of the connection portions where the upstream ends of the four intake pipes 83a, 83b, 83c and 83d are connected to the surge tank 82 are determined by the cylinder to which the mounting flange 84 at the downstream end is fixed.
- the deviation of the pipe length is compensated for by displacing the intake manifold mounting surface 8 ⁇ of the head 8 as shown in FIGS. 4 to 5D. Specifically, the deviations D a to D d of the first intake pipe 83 a to the fourth intake pipe 83 d from the intake manifold mounting surface 8, are smaller as the inclination angle is smaller. It is set so as to be large, that is, D a> D b> D c> D d. As a result, the pipe length of the first intake pipe 83a shown in FIG. 5A is reduced by the large amount of deviation Da due to the decrease in pipe length due to the horizontal arrangement.
- the length of the intake pipe 83d is increased by the large inclination, and the increase in the pipe length is compensated for by the small amount of deviation Dd, and the four intake pipes 83a, 83b, 83c, 83 3d pipe length can be made almost equal. In this way, by eliminating the variation in the length of the four intake pipes 83a to 83d, it is possible to prevent the output of the engine E from decreasing.
- Two low-pressure fuel pumps 88, 88 which are plunger pumps, are provided in parallel on the rear surface of the head force bar 9.
- the pump rocker arm 103 is coaxially supported on the intake rocker arm shaft 102 that supports the intake rocker arm 101, and the pump drive rocker arm 1
- One end of 03 is in contact with the pump cam 104 provided on the cam shaft 39, and the other end is in contact with the plunger 105 of each low-pressure fuel pump 88.
- the low-pressure fuel pumps 88, 88 are driven by the camshaft 39.
- the sub-tank 8 9 is divided into a main body 8 9 and the upper cap 8 9 2 lower body portion 8 9 4 intake pipe
- the two bosses formed on the 83d are fixed with ports 106 and 106, respectively, and the cylinder block 6 is fixed with two ports 107 and 107.
- a float valve 90 for adjusting the fuel level and a high-pressure fuel pump 91 composed of an electromagnetic pump are housed.
- the float valve 90 opens and closes when the fuel level drops, opens the on-off valve 108 and introduces the fuel from the low-pressure pumps 88 and 88 into the sub-tank 89, and when the fuel level rises, the on-off valve 1 08 closes and shuts off fuel from low-pressure pumps 88, 88.
- the high-pressure pump 91 is arranged vertically, and the fuel sucked from the strainer 111 arranged along the bottom wall of the sub-tank 89 is fixed to the front part of the sub-tank 89 with a band 111. pumped through the fuel supply pipe L 3 to the high-pressure full I le evening one 9 2.
- a fuel rail 93 is fixed to the mounting flange 84 of the intake manifold 85 by a plurality of ports 113, and four fuel tanks corresponding to four cylinders 122 are provided.
- fuel injection valves 9 4 ... is fixed, the fuel supplied to the lower end of the fuel rail 9 3 are allocated to the four fuel injection valves 9 4 ... via the fuel supply pipe L 4 from the high-pressure filter 9 2 .
- the sub-tank 89, the high-pressure fuel pump 91, the high-pressure filter 92, the fuel rail 93, and the regulator 95 constitute high-pressure fuel supply means 96.
- the main body 78 of 76 is connected to two air vent pipes L 7 and L 8 .
- Contact subtank 8 9 of the cap 8 9 2 of the pair of joint 3 6 a towards the central portion after the previous top, 3 6 b is provided so as to isolate the right and left direction
- One joint 36 a to which the air vent pipe L 8 is connected is connected to the sub-tank via an L-shaped air vent passage 37 a that extends the upper wall of the cap 89 2 in the other direction.
- the air vent pipe L 7 is connected to the upper space 8 9 3 of the pipe 8 9, and the other joint 36 b is an L-shaped air vent passage 3 7 extending the upper wall of the cap 89 2 in one direction. through b communicating with the upper space 8 9 3 sub-tanks 8 9. That is, the pair of air vent passages 37a and 37b are arranged so as to cross each other. You.
- the internal pressure of the sub tank 8 9 with the consumption of fuel by the operation of the engine E Is prevented from decreasing, and the fuel can be supplied to the fuel injection valves 94 without any problem.
- fuel vapor supplied to the intake silencer 76 during operation of the engine E is sucked into the engine E via the intake manifold 85, but when the engine E is stopped, fuel vapor is generated inside the intake silencer 76. Liquefies.
- the fuel in which the fuel vapor is liquefied is captured at the bottom of the intake silencer 76 having a sufficient volume, and therefore, there is no possibility that the fuel flows out of the intake system.
- the fuel trapped at the bottom of the intake silencer 76 evaporates and is taken into the engine E.
- the air vent pipe L 7 continuous therewith because through the L 8 are released to the air intake silencer 7 6, is not the fuel in the sub-tank 8 9 pushed out in the intake silencer one 7 6 via the air vent piping L 7, L 8.
- the pair of air vent passages 37a and 37b so as to intersect each other, even if one end of each air vent passage 37a and 37b is submerged below the liquid level, the other end is kept. The fuel is exposed above the liquid level, preventing the fuel from flowing out due to gravity.
- the air vent passages 37a and 37b are provided substantially at the center of the sub tank 89 in the front-rear direction, the air vent passages 37a and 37a The open end of 37 b does not sink below the fuel level.
- the number of assembly steps can be reduced and workability can be improved. That is, the third intake pipe 83 c and the fourth intake pipe 83 cl of the intake manifold 85 with the fuel injection valves 94 attached to the mounting flange 84
- a sub-tank 89 incorporating a float valve 90 and a high-pressure fuel pump 91 inside is fixed with two ports 106 and 106, and a high-pressure filter 92 is attached to the sub-tank 89 using a band 112.
- the fuel rail 93 connecting the four fuel injection valves 94 is fixed to the mounting flange 84 of the intake manifold 85 with the port 113, and the fuel rail 93 is attached to the fuel rail 93.
- the engine E of the outboard motor O is illustrated, but the present invention can be applied to an engine other than the outboard motor 0.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002273255A CA2273255C (en) | 1996-12-19 | 1997-12-19 | Air vent structure for subsidiary fuel tank of an engine |
| DE69735438T DE69735438T2 (de) | 1996-12-19 | 1997-12-19 | Belüftung eines zwischentanks in motoren |
| US09/308,673 US6244251B1 (en) | 1996-12-19 | 1997-12-19 | Air vent construction of subtank in engine |
| EP97949159A EP0957258B1 (en) | 1996-12-19 | 1997-12-19 | Air vent construction of subtank in engine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34022196A JP3871751B2 (ja) | 1996-12-19 | 1996-12-19 | 船外機におけるサブタンクのエアベント構造 |
| JP8/340221 | 1996-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998027332A1 true WO1998027332A1 (en) | 1998-06-25 |
Family
ID=18334861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1997/004699 Ceased WO1998027332A1 (en) | 1996-12-19 | 1997-12-19 | Air vent construction of subtank in engine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6244251B1 (ja) |
| EP (1) | EP0957258B1 (ja) |
| JP (1) | JP3871751B2 (ja) |
| CA (1) | CA2273255C (ja) |
| DE (1) | DE69735438T2 (ja) |
| WO (1) | WO1998027332A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100993741B1 (ko) | 2004-11-25 | 2010-11-11 | 현대자동차주식회사 | 스톱퍼 기능을 가진 레버가 장착된 사이런서 |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001065412A (ja) | 1999-08-26 | 2001-03-16 | Sanshin Ind Co Ltd | エンジン |
| JP4563613B2 (ja) * | 2001-05-10 | 2010-10-13 | 本田技研工業株式会社 | 船外機のエンジンにおける燃料ポンプ取付構造 |
| JP4021163B2 (ja) * | 2001-07-16 | 2007-12-12 | 本田技研工業株式会社 | 船外機用の副燃料タンク・燃料ポンプ組立体 |
| USD473101S1 (en) | 2001-11-28 | 2003-04-15 | World Kitchen, Inc. | Cookware lid rim |
| USD473418S1 (en) | 2001-11-28 | 2003-04-22 | World Kitchen, Inc. | Pot rim |
| USD475886S1 (en) | 2001-11-28 | 2003-06-17 | World Kitchen, Inc. | Cookware lid rim |
| USD472761S1 (en) | 2001-11-28 | 2003-04-08 | World Kitchen, Inc. | Cookware lid rim |
| USD471058S1 (en) | 2001-11-28 | 2003-03-04 | World Kitchen, Inc. | Pan rim |
| USD477967S1 (en) | 2002-06-18 | 2003-08-05 | World Kitchen, Inc. | Pan handle |
| USD477966S1 (en) | 2002-06-18 | 2003-08-05 | World Kitchen, Inc. | Skillet handle |
| USD477180S1 (en) | 2002-06-20 | 2003-07-15 | World Kitchen, Inc. | Cookware pot handle |
| WO2006092972A1 (ja) * | 2005-03-01 | 2006-09-08 | Honda Motor Co., Ltd. | 吸気案内装置を備える内燃機関 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0364658A (ja) | 1989-07-31 | 1991-03-20 | Suzuki Motor Corp | 船外機の燃料噴射装置 |
| JPH0586997A (ja) * | 1991-09-24 | 1993-04-06 | Aisan Ind Co Ltd | 燃料蒸発ガス流出防止装置 |
| JPH08232765A (ja) * | 1995-02-24 | 1996-09-10 | Suzuki Motor Corp | 自動二輪車のエアベントホース構造 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB724652A (en) | 1952-02-08 | 1955-02-23 | Nash Engineering Co | Aircraft fuel systems and booster pumps therefor |
| US4809666A (en) * | 1986-01-21 | 1989-03-07 | Outboard Marine Corporation | Fuel feed system |
| US4844043A (en) * | 1988-02-22 | 1989-07-04 | Brunswick Corporation | Anti vapor lock carbureted fuel system |
| GB2217388B (en) | 1988-04-11 | 1992-11-18 | Outboard Marine Corp | Vapour separator |
| CA2030908A1 (en) | 1990-03-02 | 1991-09-03 | Henry C. Billingsley | Fuel feed system |
| US5309885A (en) | 1992-02-13 | 1994-05-10 | Outboard Marine Corporation | Marine propulsion device including a fuel injected, four-cycle internal combustion engine |
| US5438963A (en) * | 1992-09-30 | 1995-08-08 | Honda Giken Kogyo Kabushiki Kaisha | 4-cycle engine |
| US5609922A (en) | 1994-12-05 | 1997-03-11 | Mcdonald; Robert R. | Method of manufacturing molds, dies or forming tools having a cavity formed by thermal spraying |
| JPH08261000A (ja) * | 1995-03-27 | 1996-10-08 | Sanshin Ind Co Ltd | 船外機の燃料供給装置 |
| JP3773068B2 (ja) | 1996-05-23 | 2006-05-10 | ヤマハマリン株式会社 | 船外機用エンジンの燃料供給装置 |
-
1996
- 1996-12-19 JP JP34022196A patent/JP3871751B2/ja not_active Expired - Fee Related
-
1997
- 1997-12-19 CA CA002273255A patent/CA2273255C/en not_active Expired - Fee Related
- 1997-12-19 DE DE69735438T patent/DE69735438T2/de not_active Expired - Lifetime
- 1997-12-19 US US09/308,673 patent/US6244251B1/en not_active Expired - Lifetime
- 1997-12-19 EP EP97949159A patent/EP0957258B1/en not_active Expired - Lifetime
- 1997-12-19 WO PCT/JP1997/004699 patent/WO1998027332A1/ja not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0364658A (ja) | 1989-07-31 | 1991-03-20 | Suzuki Motor Corp | 船外機の燃料噴射装置 |
| JPH0586997A (ja) * | 1991-09-24 | 1993-04-06 | Aisan Ind Co Ltd | 燃料蒸発ガス流出防止装置 |
| JPH08232765A (ja) * | 1995-02-24 | 1996-09-10 | Suzuki Motor Corp | 自動二輪車のエアベントホース構造 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0957258A4 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100993741B1 (ko) | 2004-11-25 | 2010-11-11 | 현대자동차주식회사 | 스톱퍼 기능을 가진 레버가 장착된 사이런서 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0957258A1 (en) | 1999-11-17 |
| DE69735438T2 (de) | 2006-09-28 |
| EP0957258B1 (en) | 2006-03-08 |
| EP0957258A4 (en) | 2000-11-15 |
| US6244251B1 (en) | 2001-06-12 |
| DE69735438D1 (de) | 2006-05-04 |
| CA2273255C (en) | 2004-12-14 |
| JP3871751B2 (ja) | 2007-01-24 |
| CA2273255A1 (en) | 1998-06-25 |
| JPH10184478A (ja) | 1998-07-14 |
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