WO2003072934A1 - Moteur a combustion interne a injection du carburant dans le cylindre - Google Patents
Moteur a combustion interne a injection du carburant dans le cylindre Download PDFInfo
- Publication number
- WO2003072934A1 WO2003072934A1 PCT/JP2003/002392 JP0302392W WO03072934A1 WO 2003072934 A1 WO2003072934 A1 WO 2003072934A1 JP 0302392 W JP0302392 W JP 0302392W WO 03072934 A1 WO03072934 A1 WO 03072934A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- cylinder
- valve
- fuel injection
- internal combustion
- Prior art date
Links
Classifications
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
- F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
- F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
-
- 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
- F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
- F02B17/005—Engines characterised by means for effecting stratification of charge in cylinders having direct injection in the combustion chamber
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the cylinder
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the cylinder
- F02B23/105—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the cylinder the fuel is sprayed directly onto or close to the spark plug
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/184—Discharge orifices having non circular sections
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/045—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
- F01L2001/0537—Double overhead camshafts [DOHC]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2800/00—Methods of operation using a variable valve timing mechanism
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/12—Fail safe operation
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B2023/103—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector having a multi-hole nozzle for generating multiple sprays
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B2023/106—Tumble flow, i.e. the axis of rotation of the main charge flow motion is horizontal
-
- 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
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to an in-cylinder fuel injection type internal combustion engine in which fuel is directly injected into a cylinder bore by a fuel injection valve.
- an intake passage is formed on one side of the cylinder head, and an exhaust passage is formed on the other side.
- a fuel injection valve is provided which is capable of injecting fuel obliquely downward from the outer end of the one side of the cylinder head toward the cylinder hole ⁇ .
- an ignition plug whose discharge portion faces the cylinder hole substantially on the axis of the cylinder hole is provided.
- the fuel injected by the fuel injection valve during the compression stroke collides with the upper surface of the piston and then flows to the discharge portion. Is done. That is, according to the internal combustion engine, a rich mixture layer is directed to the discharge section, and more reliable ignition is obtained. This is called a stratified combustion method.
- the fuel efficiency is improved by the above-described reliable ignition. Is improved.
- the fuel injected from the fuel injection valve is directed to the axial center side (center side) of the cylinder hole.
- the air-fuel ratio of the air-fuel mixture in the vicinity of the inner peripheral surface of the cylinder hole increases, and the air-fuel mixture tends to become lean.
- the present invention has been made in view of the above situation, and has a large average air-fuel ratio of the entire air-fuel mixture in a cylinder hole, such as when the internal combustion engine is under a low load, and the air-fuel mixture is averagely lean. Even in such cases, the purpose is to enable the compression ratio to be set higher and to improve the fuel economy more reliably. Disclosure of the invention
- an intake passage is formed on one side of a cylinder head and an exhaust passage is formed on the other side in a side view of the cylinder.
- a fuel injection valve for injecting fuel obliquely downward from the outer end of the one side of the head toward the inside of the cylinder hole is provided, and the cylinder hole is provided substantially on the axis of the cylinder hole.
- the fuel injected by the fuel injection valve has an eight-shaped shape sandwiching the discharge portion in a plan view of the cylinder, and the fuel injection valve is caused to inject the fuel during the suction stroke. Things.
- the internal combustion engine may include a variable pulp timing device that changes a timing of an opening / closing operation of at least one of an intake valve and an exhaust valve.
- a variable valve lift device that changes the lift of one of the exhaust valves and the lift of one of the valves may be provided.
- the internal combustion engine may include at least one of the two devices.
- the fuel in the side view of the cylinder, the fuel may be injected by the fuel injection valve.
- the fuel to be used may have a fan shape.
- FIG. 1 is a partial side sectional view of an internal combustion engine.
- FIG. 2 is a plan view of the piston.
- FIG. 3 is a front view of the tip of the fuel injection valve. BEST MODE FOR CARRYING OUT THE INVENTION
- reference numeral 1 denotes an internal combustion engine mounted on a vehicle such as a motorcycle or an automobile, and the internal combustion engine 1 is a parallel multi-cylinder four-cycle internal combustion engine.
- the internal combustion engine 1 includes a crankcase supported by a stationary member such as a vehicle body and supporting a crankshaft (not shown), and a cylinder protruding upward from the crankcase.
- the cylinder 2 has a cylinder body 5 that projects upward from the crankcase and has a cylinder hole 4 whose axis 3 coincides with a vertical line.
- the cylinder 2 is detachably fastened to the upper end of the cylinder body 5 and A cylinder head 6 that closes the upper end opening of the hole 4, a cylinder head cover 7 that is fastened to the upper surface side of the cylinder head 6, and is fitted into the cylinder hole 4 so as to be slidable in the axial direction.
- a piston 8 and a connecting rod 9 for interlocking the piston 8 and the crankshaft to each other are provided.
- the space surrounded by the inner peripheral surface of the cylinder hole 4, the lower surface of the cylinder head 6, and the upper surface 10 of the piston 8 near the top dead center is defined as a combustion chamber 11.
- the direction extending in one horizontal direction perpendicular to the axis 3 is defined as the front (arrow F r).
- the front arrow F r.
- An intake passage 15 communicating with the combustion chamber 11 from outside is formed.
- a pair of left and right intake valves 16 supported by the cylinder head 6 to open and close a pair of left and right openings 15a of the intake passage 15 to the combustion chamber 11 are provided.
- a spring 17 is provided for elastically biasing the intake valves 16 so that the intake valves 16 close the openings 15a from the combustion chamber 11 side.
- an exhaust passage 19 communicating from the combustion chamber 11 to the outside of the cylinder head 6 is formed on the other side (front side) of the cylinder head 6 .
- a pair of left and right exhaust valves 20 which are supported by the cylinder head 6 and open and close a pair of left and right openings 19a of the exhaust passage 19 to the combustion chamber 11 are provided.
- a spring 21 is provided to elastically urge each of the exhaust valves 20 so that each of the exhaust valves 20 closes each of the openings 19a from the combustion chamber 11 side.
- a valve operating mechanism 23 is provided for operating the intake valve 16 and the exhaust valve 20 to open and close at a predetermined crank angle in conjunction with the crankshaft.
- the valve operating mechanism 23 has shaft centers 24 and 25 arranged side by side in front and rear and extending to the left and right.
- the intake and exhaust cam shafts 26 and 27, and these cam shafts 26 and 27 are respectively Bearings 28 and 29 supported on the cylinder head 6 so as to be rotatable around the cores 24 and 25, and a chain winding type in which the camshafts 26 and 27 are linked to the crankshaft.
- the valve operating mechanism 23 includes a known variable pulp timing device 36 that varies the timing (crank angle) of the opening and closing of the intake valve 16.
- the variable carrying device 36 electronically controls the hydraulic variable mechanism 37 interposed between the intake force shaft 26 and the power transmission means 30 and the variable mechanism 37. Control means 38 are provided.
- the valve operating mechanism 23 includes a known variable valve lift device 40 that makes the lift dimension of the intake valve 16 variable.
- the variable pulp lift device 40 electronically controls the variable mechanism 41 for making the state of cam engagement between the intake valve 16 and the intake camshaft 26 variable, and the variable mechanism 41 electronically.
- Control means 42 are provided. When the variable mechanism 41 is actuated by the control of the control means 42, the lift dimension of the intake valve 16 engaging with the intake force shaft 26 cam is reduced so as to increase. Is also adjusted.
- a fuel injection valve 45 for injecting fuel 44 obliquely downward from the outer end of the one side portion (rear portion) of the cylinder head 6 into the cylinder hole 4 is provided.
- the valve 45 is supported by the cylinder head 6.
- a spark plug 47 is provided on the combustion chamber 11 in the cylinder hole 4 substantially on the axis 3 of the cylinder hole 4 so that the discharge portion 46 faces the spark plug 47.
- the spark plug 47 is also supported by the cylinder head 6. Is held.
- An engine control device (not shown) for electronically and automatically controlling the control means 38, 42, the fuel injection valve 45, and the ignition plug 47 is provided.
- a pair of left and right injection nozzles 49 for injecting the fuel 44 are provided, and the openings of each of the injection nozzles 49 have a rectangular shape that is long vertically.
- the pair of injection flows of the fuel 44 injected by the injection nozzles 49 have a figure-eight shape sandwiching the discharge portion 46 in a plan view of the cylinder 2 (FIG. 2).
- the width W of each of the above-mentioned firing nozzles 49 is preferably 100 to 200 m.
- the intersection angle ⁇ between the center lines of the two fuels 44 is approximately 35 °, but the preferred range is 30-50 °.
- each injection nozzle 49 since the width dimension W of each injection nozzle 49 is extremely narrow, 100 to 200 ⁇ m, the fuel 44 injected through each injection nozzle 49 has a high injection speed. Become. Therefore, first, the fuel 44 becomes finer and the ignition performance is improved. Secondly, the directivity that the fuel 44 injected to a desired position in the cylinder hole 4 is directed is improved, and the injected fuel 44 reaches the desired position more reliably.
- the shape of the injection flow of the fuel 44 injected by the fuel injection valve 45 is a flat fan shape.
- the divergence angle i3 of the injected fuel 44 is set to be approximately 75 °, but a preferable range is 60 to 80 °.
- the compressed air-fuel mixture is ignited by the discharge portion 46 of the ignition plug 47 and is burned in the combustion chamber 11.
- the combustion gas generated by this combustion is discharged to the outside as the exhaust gas 51 through the exhaust passage 19.
- the driving force of the internal combustion engine 1 generated by the combustion in the combustion chamber 11 is used for running the vehicle via the crankshaft.
- variable pulp timing device 36 In the operation of the internal combustion engine 1, in order to improve the output, when the speed is high, the timing (crank angle) of the opening and closing operation of the intake valve 16 is advanced by the variable pulp timing device 36. Can be In addition, the variable valve lift device 40 increases the lift dimension of the intake valve 16, thereby increasing the amount of air 50 flowing into the cylinder hole 4. Note that a variable valve timing device 36 or a variable valve lift device 40 may be provided for the exhaust valve 20 instead of or together with the intake valve 16.
- the fuel injection valve 45 when viewed from the side of the cylinder 2 (FIG. 1), the fuel injection valve 45 is inserted into the cylinder hole 4 from the side of the intake passage 15 through which air 50 flows into the cylinder hole 4. Injects fuel 4 4 toward it. Therefore, the fuel 44 injected by the fuel injection valve 45 passes through the intake passage 15 and enters the cylinder hole 4. It is prevented from being disturbed against the inflowing air 50, and travels while maintaining a predetermined shape in the direction of injection.
- the fuel 44 injected from the fuel injection valve 45 has an eight-shaped shape sandwiching the discharge portion 46, and the piston 8 descends from the top dead center during the intake stroke of the internal combustion engine 1.
- the direction of movement of the piston 8 and the direction of injection of the fuel 44 by the fuel injection valve 45 are both downward and the same direction.
- the guide is guided by these surfaces and the fuel 44, respectively.
- the portions are located along the inner peripheral surface of the cylinder hole 4 and are made to approach each other in the circumferential direction (two-dot chain line in FIG. 2).
- the other portions of the fuels 44 are along the inner peripheral surface of the cylinder hole 4 and are separated from each other in the circumferential direction.
- the thin air-fuel mixture layer 53 is the suction stroke And the compression stroke, and over a large crank angle, the air-fuel ratio in the thin air-fuel mixture layer 53 is larger than that in the above-described rich air-fuel mixture layer 52. It is prevented that the size increases unilaterally.
- the thin air-fuel mixture layer 53 an air-fuel ratio of a somewhat small value is secured, and ignition in the thin air-fuel mixture layer 53 is more reliably performed.
- a dense air-fuel mixture 52 having a lower air-fuel ratio than the thin air-fuel mixture 53 exists around the thin air-fuel mixture layer 53. Therefore, this dense mixture layer 52 is rapidly burned by fast flame propagation.
- the internal combustion engine 1 includes a variable valve timing device 36 for varying the opening / closing valve operation timing of at least one of the intake valve 16 and the exhaust valve 20, and the intake valve 1. 6 and a variable valve lift device 40 that makes the lift of at least one of the exhaust valve 20 and the shift valve variable. Further, the internal combustion engine 1 includes at least one of the two devices 36 and 40.
- the upper surface 10 of the piston 8 near the top dead center is on the other hand, the operation of each of the valves 16 and 20 is controlled by the above-described variable pulp timing device 36 and variable valve lift device 40 so that the lower ends of the intake valve 16 and the exhaust valve 20 that operate as an on-off valve do not contact each other.
- the upper surface 10 of the piston 8 has a flatter and simpler shape, for example, the depth dimension of the recess 33 formed on the upper surface 10 of the piston 8 can be made smaller. Can be done. Therefore, when the fuel 44 injected by the fuel injection valve 45 is guided by the upper surface 10 of the piston 8 to form a doughnut-shaped dense mixture layer 52, the upper surface 10 of the piston 8 is formed.
- the fuel mixture 44 can be made flatter and simpler, the fuel 44 can be more accurately guided by the upper surface 10, and the dense mixture layer 52 can have a desired donut shape. For this reason, the occurrence of the knocking described above is more reliably prevented, and the compression ratio can be set higher by that amount, so that the improvement in fuel efficiency is more reliably achieved.
- the volume of the recess 33 can be reduced, and the combustion chamber 1 when the piston 8 reaches the top dead center can be reduced.
- the volume of 1 can be made smaller. For this reason, the compression ratio can be set higher, and in this respect as well, the improvement in fuel efficiency is more reliably achieved.
- the shape of the injection flow of the fuel 44 injected by the fuel injection valve 45 is a flat fan shape.
- the fuel 44 injected from the fuel injection valve 45 has, for example, a more uniform air-fuel ratio with respect to each portion of the inner peripheral surface of the cylinder hole 4 as compared to simply forming the fuel 44 into a conical shape. It tends to be along.
- the dense mixture layer 52 can be more reliably formed into a desired donut shape by that amount, and therefore, the occurrence of the knocking is more reliably prevented, and the improvement in fuel efficiency is more reliably achieved. Is achieved.
- the axis 3 of the cylinder 2 in the actual internal combustion engine 1 may be inclined with respect to the vertical line.
- the present invention may be achieved by appropriately combining the individual components described above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002477687A CA2477687C (en) | 2002-02-28 | 2003-02-28 | Direct injection internal combustion engine |
AU2003211595A AU2003211595B2 (en) | 2002-02-28 | 2003-02-28 | In-cylinder fuel injection-type internal combustion engine |
KR1020047013427A KR100917359B1 (ko) | 2002-02-28 | 2003-02-28 | 직접 분사식 내연기관 |
EP03742893.5A EP1484498B1 (en) | 2002-02-28 | 2003-02-28 | In-cylinder fuel injection-type internal combustion engine |
ZA2004/06814A ZA200406814B (en) | 2002-02-28 | 2004-08-26 | In-cylinder fuel injection-type internal combustion engine |
US10/928,711 US7404389B2 (en) | 2002-02-28 | 2004-08-27 | Direct injection internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002054358A JP3722285B2 (ja) | 2002-02-28 | 2002-02-28 | 筒内燃料噴射式内燃機関 |
JP2002-54358 | 2002-02-28 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/928,711 Continuation US7404389B2 (en) | 2002-02-28 | 2004-08-27 | Direct injection internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003072934A1 true WO2003072934A1 (fr) | 2003-09-04 |
Family
ID=27764395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/002392 WO2003072934A1 (fr) | 2002-02-28 | 2003-02-28 | Moteur a combustion interne a injection du carburant dans le cylindre |
Country Status (9)
Country | Link |
---|---|
US (1) | US7404389B2 (ja) |
EP (1) | EP1484498B1 (ja) |
JP (1) | JP3722285B2 (ja) |
KR (1) | KR100917359B1 (ja) |
CN (1) | CN100400853C (ja) |
AU (1) | AU2003211595B2 (ja) |
CA (1) | CA2477687C (ja) |
WO (1) | WO2003072934A1 (ja) |
ZA (1) | ZA200406814B (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005201097A (ja) * | 2004-01-14 | 2005-07-28 | Toyota Motor Corp | 筒内噴射式内燃機関 |
JP4415843B2 (ja) * | 2004-12-10 | 2010-02-17 | トヨタ自動車株式会社 | 内燃機関 |
JP2006258012A (ja) | 2005-03-18 | 2006-09-28 | Toyota Motor Corp | 内燃機関 |
JP2006258035A (ja) * | 2005-03-18 | 2006-09-28 | Denso Corp | 燃料噴射弁 |
JP2006258021A (ja) | 2005-03-18 | 2006-09-28 | Toyota Motor Corp | 内燃機関の制御装置 |
JP4543978B2 (ja) | 2005-03-18 | 2010-09-15 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
US7740002B2 (en) * | 2006-09-05 | 2010-06-22 | Gm Global Technology Operations, Inc. | Fuel injector |
US8091352B2 (en) * | 2006-12-28 | 2012-01-10 | Caterpillar Inc. | Ignition system |
DE102007032577B4 (de) * | 2007-07-09 | 2011-07-21 | ADC GmbH, 14167 | Endverschluss für die Telekommunikations- und Datentechnik |
CN102518527B (zh) * | 2011-12-01 | 2015-10-14 | 隆鑫通用动力股份有限公司 | 小型通用汽油机缸头及其汽油机 |
US8991355B2 (en) | 2011-12-01 | 2015-03-31 | Loncin Motor Co., Ltd. | Cylinder head of small-sized general-purpose gasoline engine and gasoline engine having the same |
US9188085B2 (en) * | 2012-10-31 | 2015-11-17 | Electro-Motive Diesel, Inc. | Fuel system having multiple gaseous fuel injectors |
US10690086B2 (en) * | 2018-08-16 | 2020-06-23 | GM Global Technology Operations LLC | Direct fuel injection, two-valve per cylinder pushrod valvetrain combustion system for an internal combustion engine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09119315A (ja) * | 1995-10-25 | 1997-05-06 | Yamaha Motor Co Ltd | 筒内噴射エンジン |
US6045063A (en) * | 1995-10-31 | 2000-04-04 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Fuel injector |
JP2000345944A (ja) | 1999-06-04 | 2000-12-12 | Hitachi Ltd | 筒内噴射式エンジン、それに用いるアトマイザ、燃料噴射弁、及びこれらの要素を搭載した自動車 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1254151A (en) * | 1968-01-08 | 1971-11-17 | Shigeru Onishi | Internal combustion engine |
JPS63220460A (ja) * | 1987-03-09 | 1988-09-13 | Sharp Corp | デイスクオ−トチエンジヤ− |
AT403615B (de) * | 1991-03-12 | 1998-04-27 | Avl Verbrennungskraft Messtech | Luftverdichtende, ventilgesteuerte brennkraftmaschine |
DE69415362T2 (de) * | 1993-02-17 | 1999-06-10 | Denso Corp Kariya City Aichi P | Flüssigkeiteinspritzventil |
DE4331851A1 (de) * | 1993-09-20 | 1995-03-23 | Bosch Gmbh Robert | Lochkörper und Ventil mit Lochkörper |
JPH07259701A (ja) * | 1994-03-25 | 1995-10-09 | Keihin Seiki Mfg Co Ltd | 電磁式燃料噴射弁 |
EP0678667B1 (en) * | 1994-03-25 | 1998-08-12 | Kabushiki Kaisha Keihinseiki Seisakusho | Solenoid type fuel injection valve |
JPH08177497A (ja) * | 1994-12-20 | 1996-07-09 | Nissan Motor Co Ltd | 直噴型火花点火式内燃機関 |
US5709190A (en) * | 1995-04-27 | 1998-01-20 | Yamaha Hatsudoki Kabushiki Kaisha | Combustion chamber and induction system for engine |
JP3380379B2 (ja) * | 1995-04-27 | 2003-02-24 | ヤマハ発動機株式会社 | 筒内噴射エンジン |
JP3608307B2 (ja) * | 1996-09-19 | 2005-01-12 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
JP3932697B2 (ja) * | 1998-10-01 | 2007-06-20 | 株式会社日立製作所 | 筒内噴射型内燃機関の燃料噴射方法および、燃料噴射弁,内燃機関,燃焼方法 |
JP3611471B2 (ja) * | 1999-01-28 | 2005-01-19 | 株式会社日立製作所 | 筒内噴射式内燃機関 |
JP3633392B2 (ja) * | 1999-08-23 | 2005-03-30 | トヨタ自動車株式会社 | 筒内噴射式火花点火内燃機関 |
JP3651338B2 (ja) * | 1999-12-15 | 2005-05-25 | 株式会社日立製作所 | 筒内燃料噴射弁およびこれを搭載した内燃機関 |
DE10108541B4 (de) * | 2000-02-22 | 2009-02-05 | Hitachi, Ltd. | Verfahren und Vorrichtung zur Kraftstoffeinspritzung für Brennkraftmaschinen |
JP2001248447A (ja) * | 2000-03-06 | 2001-09-14 | Yamaha Motor Co Ltd | 筒内燃料噴射式エンジンにおける燃焼室構造 |
DE10026323A1 (de) * | 2000-05-26 | 2001-11-29 | Bosch Gmbh Robert | Brennstoffeinspritzsystem |
DE10026321A1 (de) * | 2000-05-26 | 2001-11-29 | Bosch Gmbh Robert | Brennstoffeinspritzsystem und Verfahren zum Einspritzen |
DE10124750A1 (de) * | 2001-05-21 | 2002-11-28 | Bosch Gmbh Robert | Brennstoffeinspritzsystem |
EP1650429A3 (en) * | 2001-07-02 | 2006-09-13 | Hitachi, Ltd. | Direct injection type internal combustion engine |
JP3912194B2 (ja) * | 2002-06-11 | 2007-05-09 | マツダ株式会社 | 火花点火式直噴エンジン |
JP2005201097A (ja) * | 2004-01-14 | 2005-07-28 | Toyota Motor Corp | 筒内噴射式内燃機関 |
JP2005351200A (ja) * | 2004-06-11 | 2005-12-22 | Toyota Motor Corp | 筒内噴射式火花点火内燃機関 |
JP2006258021A (ja) * | 2005-03-18 | 2006-09-28 | Toyota Motor Corp | 内燃機関の制御装置 |
JP2006258012A (ja) * | 2005-03-18 | 2006-09-28 | Toyota Motor Corp | 内燃機関 |
-
2002
- 2002-02-28 JP JP2002054358A patent/JP3722285B2/ja not_active Expired - Fee Related
-
2003
- 2003-02-28 KR KR1020047013427A patent/KR100917359B1/ko active IP Right Grant
- 2003-02-28 WO PCT/JP2003/002392 patent/WO2003072934A1/ja active Application Filing
- 2003-02-28 AU AU2003211595A patent/AU2003211595B2/en not_active Ceased
- 2003-02-28 EP EP03742893.5A patent/EP1484498B1/en not_active Expired - Lifetime
- 2003-02-28 CN CNB038049112A patent/CN100400853C/zh not_active Expired - Fee Related
- 2003-02-28 CA CA002477687A patent/CA2477687C/en not_active Expired - Fee Related
-
2004
- 2004-08-26 ZA ZA2004/06814A patent/ZA200406814B/en unknown
- 2004-08-27 US US10/928,711 patent/US7404389B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09119315A (ja) * | 1995-10-25 | 1997-05-06 | Yamaha Motor Co Ltd | 筒内噴射エンジン |
US6045063A (en) * | 1995-10-31 | 2000-04-04 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Fuel injector |
JP2000345944A (ja) | 1999-06-04 | 2000-12-12 | Hitachi Ltd | 筒内噴射式エンジン、それに用いるアトマイザ、燃料噴射弁、及びこれらの要素を搭載した自動車 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1484498A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP2003254199A (ja) | 2003-09-10 |
ZA200406814B (en) | 2005-05-25 |
US7404389B2 (en) | 2008-07-29 |
AU2003211595A1 (en) | 2003-09-09 |
CA2477687A1 (en) | 2003-09-04 |
KR100917359B1 (ko) | 2009-09-16 |
EP1484498B1 (en) | 2016-01-06 |
CN1639457A (zh) | 2005-07-13 |
EP1484498A1 (en) | 2004-12-08 |
KR20040086460A (ko) | 2004-10-08 |
CN100400853C (zh) | 2008-07-09 |
CA2477687C (en) | 2008-12-30 |
US20050081820A1 (en) | 2005-04-21 |
JP3722285B2 (ja) | 2005-11-30 |
AU2003211595B2 (en) | 2010-02-04 |
EP1484498A4 (en) | 2008-04-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0875670B1 (en) | Direct injection type internal combustion engine | |
US8056530B2 (en) | Direct injection spark ignition internal combustion engine and method for controlling same | |
US6612282B2 (en) | Combustion chamber for DISI engine | |
WO2003072934A1 (fr) | Moteur a combustion interne a injection du carburant dans le cylindre | |
US20050028784A1 (en) | Direct fuel injection type internal combustion engine | |
US6708667B2 (en) | Combustion chamber structure of in-cylinder fuel injection type engine | |
JP2007162631A (ja) | 内燃機関の制御装置 | |
US7673617B2 (en) | Indirect-injection internal-combustion engine, notably spark-ignition supercharged engine, with two intake means for carrying out a burnt gas scavenging stage | |
JP4017121B2 (ja) | 筒内燃料噴射式内燃機関 | |
JP3985968B2 (ja) | 筒内燃料噴射式内燃機関 | |
JP2006177250A (ja) | 副室式内燃機関 | |
US4305358A (en) | Internal combustion engine | |
JPH0619799Y2 (ja) | 燃焼室間の渦流調整バルブ | |
JPH0658151A (ja) | 副燃焼室一体バルブ | |
JP4082277B2 (ja) | 筒内直噴cngエンジン | |
JP4052422B2 (ja) | ガスエンジンの副室弁装置 | |
JPS6060223A (ja) | 自動車用エンジン | |
JP2001336451A (ja) | ガスエンジン | |
JP2009097337A (ja) | ガス燃料内燃機関 | |
JP2001020745A (ja) | 火花点火式内燃機関の燃焼制御方法および装置 | |
JP2009127481A (ja) | 内燃機関の制御装置 | |
JPH0476213A (ja) | 筒内噴射式2サイクルエンジン | |
JP2018031279A (ja) | 内燃機関の制御装置 | |
JPH0123659B2 (ja) | ||
KR20020058699A (ko) | 디젤 엔진 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004/06814 Country of ref document: ZA Ref document number: 200406814 Country of ref document: ZA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003742893 Country of ref document: EP Ref document number: 10928711 Country of ref document: US Ref document number: 2477687 Country of ref document: CA Ref document number: 1020047013427 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20038049112 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003211595 Country of ref document: AU |
|
WWP | Wipo information: published in national office |
Ref document number: 1020047013427 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2003742893 Country of ref document: EP |