CN108869006A - Small-displacement gasoline engine combustion system - Google Patents

Small-displacement gasoline engine combustion system Download PDF

Info

Publication number
CN108869006A
CN108869006A CN201810638066.1A CN201810638066A CN108869006A CN 108869006 A CN108869006 A CN 108869006A CN 201810638066 A CN201810638066 A CN 201810638066A CN 108869006 A CN108869006 A CN 108869006A
Authority
CN
China
Prior art keywords
gasoline engine
small
inlet
combustion chamber
combustion system
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.)
Pending
Application number
CN201810638066.1A
Other languages
Chinese (zh)
Inventor
胡鹏
陈伟国
李玉琦
刘华龙
金晖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chery Automobile Co Ltd
Original Assignee
SAIC Chery Automobile Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SAIC Chery Automobile Co Ltd filed Critical SAIC Chery Automobile Co Ltd
Priority to CN201810638066.1A priority Critical patent/CN108869006A/en
Publication of CN108869006A publication Critical patent/CN108869006A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/242—Arrangement of spark plugs or injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4285—Shape or arrangement of intake or exhaust channels in cylinder heads of both intake and exhaust channel
    • 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
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

The invention discloses a kind of small-displacement gasoline engine combustion systems, air intake duct on cylinder cap is connect with combustion chamber, spark plug mounting hole center line is located in cylinder axis face, combustion chamber is in valve side squish area using inclination squish, the air intake duct generally straight barrel type structure, the angle theta between air inlet passage center line and cylinder axis face are 40~50 °.Optimization design and use inclination squish formula combustion chamber to inlet structure, the Tumble intensity in engine cylinder is increased, air-fuel mixture rate and burning velocity are improved, improves heat liberation rate, heat release rate and high load capacity anti-knock properties, engine consumption is effectively reduced, engine performance design requirement is met.

Description

Small-displacement gasoline engine combustion system
Technical field
The present invention designs gasoline engine technology field, and in particular to a kind of small displacement port injection type supercharging gasoline engine Combustion system.
Background technique
Port injection type supercharging gasoline engine still occupies master in car and SUV with its low cost and high performance advantage Flow market.In the prior art, the Design of Inlet of most of port injection type supercharging gasoline engine is based on gas-duct jetting structure, is Reach big air inflow, only has higher requirements to air flue discharge coefficient.When this inlet structure is applied to engine with supercharger, Air can not be mixed adequately with fuel oil, simultaneously because its combustion chamber is generally naturally aspirated, surface to volume ratio is big, high load capacity Burning velocity is slower, causes engine anti-knock properties poor, heat liberation rate, heat release rate is lower, it is difficult to meet engine performance design requirement.
Goal of the invention
The present invention provides the small displacement of a kind of dynamic property for meeting high-performance port injection type gasoline engine and the criterion of the fuel consumption Gasoline engine combustion system.
To achieve the above object, the technical solution adopted by the present invention is that：A kind of small-displacement gasoline engine combustion system, on cylinder cap Air intake duct connect with combustion chamber, spark plug mounting hole center line is located in cylinder axis face, and combustion chamber is close to valve side squish Using inclination squish in area, it is characterised in that：The air intake duct generally straight barrel type structure, air inlet passage center line and cylinder axis Angle theta between face is 40~50 °.
The beneficial effect generated by adopting the above technical scheme is：Pass through the optimization design and use to inlet structure Squish formula combustion chamber is tilted, the Tumble intensity in engine cylinder is increased, improves air-fuel mixture rate and burning velocity, is improved Heat liberation rate, heat release rate and high load capacity anti-knock properties, effectively reduce engine consumption, meet engine performance design requirement.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is air intake duct schematic diagram of the invention；
Fig. 3 is the combustion chamber top view of the invention.
Specific embodiment
In conjunction with attached drawing, a kind of small-displacement gasoline engine combustion system, the air intake duct 10 on cylinder cap is connect with combustion chamber 30, spark Plug installation centerline hole is located in cylinder axis face 1, and combustion chamber 30 uses inclination squish in valve side squish area 31, described The generally straight barrel type structure of air intake duct 10, the angle theta between air inlet passage center line 2 and cylinder axis face 1 are 40~50 °.
Core of the invention is to increase engine by using straight barrel type inlet structure and inclination squish formula combustion chamber Tumble intensity in cylinder improves air-fuel mixture rate and burning velocity, improves heat liberation rate, heat release rate and high load capacity anti-knock properties, effectively Engine consumption is reduced, engine performance design requirement is met.
Further, the included angle between plane where the air inlet passage center line 2 and 30 exhaust outlet of combustion chamber be -10~ 10°；The combustion chamber 30 is connected with exhaust duct 20, and each on inlet and outlet road 10,20 there are two inlet and outlet mouths 11,21, respectively into, row Inlet and outlet door 40,50 is correspondingly arranged at port 11,21；Angle between the inlet valve center line 41 and cylinder axis face 1 α is 14~17 °；Angle β between exhaust valve center line 51 and cylinder axis face 1 is 14~18 °.By subtle to combustion chamber 30 The optimization design of structure reduces its surface to volume ratio, effectively reduces heat transfer loss and the unburned discharge of near wall.
Further, the gas outlet 12 of the air intake duct uses radius to carry out machine-shaping for the ball knife of 11~12mm.
Further, fuel injector 60 is arranged on air intake duct 10, the bifurcation mouth in two on air intake duct 10 air inlet shunting 12 13 with the space length H of 41 valve seating centre bore of inlet valve be 40~50mm.When it is implemented, air intake duct 10 is using single porous Fuel injector spray regime, the 41 valve seating centre bore short distance arrangement of bifurcation mouth 13 and inlet valve in air inlet shunting 12, can be effectively sharp It is sprayed with valve opening, improves engine anti-knock properties.

Claims (7)

1. a kind of small-displacement gasoline engine combustion system, the air intake duct (10) on cylinder cap is connect with combustion chamber (30), spark plug installation Centerline hole is located in cylinder axis face (1), and combustion chamber (30) use inclination squish in valve side squish area (31), special Sign is：The air intake duct (10) generally straight barrel type structure, the folder between air inlet passage center line (2) and cylinder axis face (1) Angle θ is 40~50 °.
2. small-displacement gasoline engine combustion system according to claim 1, it is characterised in that：The air inlet passage center line (2) Included angle between plane where combustion chamber (30) exhaust outlet is -10~10 °.
3. small-displacement gasoline engine combustion system according to claim 1, it is characterised in that：The combustion chamber (30) is connected with Exhaust duct (20), it is each there are two inlet and outlet mouth (11,21) on inlet and outlet road (10,20), at each inlet and outlet mouth (11,21) pair Inlet and outlet door (40,50) should be provided with.
4. small-displacement gasoline engine combustion system according to claim 3, it is characterised in that：The inlet valve center line (41) Angle α between cylinder axis face (1) is 14~17 °.
5. small-displacement gasoline engine combustion system according to claim 3, it is characterised in that：The exhaust valve center line (51) Angle β between cylinder axis face (1) is 14~18 °.
6. small-displacement gasoline engine combustion system according to claim 1, it is characterised in that：The air inlet of the air intake duct (10) Mouth (11) uses radius for the ball knife processing and forming of 11~12mm.
7. small-displacement gasoline engine combustion system according to claim 1, it is characterised in that：Fuel injector (60) is arranged in air inlet On road (10), bifurcation mouth (13) and inlet valve (41) valve seating centre bore of two air inlet shuntings (12) on air intake duct (10) Space length H is 40~50mm.
CN201810638066.1A 2018-06-20 2018-06-20 Small-displacement gasoline engine combustion system Pending CN108869006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810638066.1A CN108869006A (en) 2018-06-20 2018-06-20 Small-displacement gasoline engine combustion system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810638066.1A CN108869006A (en) 2018-06-20 2018-06-20 Small-displacement gasoline engine combustion system

Publications (1)

Publication Number Publication Date
CN108869006A true CN108869006A (en) 2018-11-23

Family

ID=64339914

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810638066.1A Pending CN108869006A (en) 2018-06-20 2018-06-20 Small-displacement gasoline engine combustion system

Country Status (1)

Country Link
CN (1) CN108869006A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110296019A (en) * 2019-07-12 2019-10-01 江门市大长江集团有限公司 A kind of internal combustion engine with novel air inlet path
CN110953100A (en) * 2019-12-13 2020-04-03 重庆隆鑫机车有限公司 Motor tricycle engine advances exhaust system and engine
CN111365139A (en) * 2018-12-25 2020-07-03 长城汽车股份有限公司 Cylinder head and internal combustion engine
WO2022016403A1 (en) * 2020-07-22 2022-01-27 宁波吉利罗佑发动机零部件有限公司 Engine combustion system, gasoline engine for hybrid vehicle, and vehicle
WO2022236457A1 (en) * 2021-05-08 2022-11-17 浙江吉利控股集团有限公司 Combustion system for vehicle and vehicle
CN116378844A (en) * 2023-06-05 2023-07-04 潍柴动力股份有限公司 Air passage structure, cylinder cover and miller molded line engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201507372U (en) * 2009-09-24 2010-06-16 重庆长安汽车股份有限公司 Air duct of gasoline engine with high tumble strength and high flow coefficient
CN103256114A (en) * 2013-04-28 2013-08-21 重庆小康工业集团股份有限公司 Obliquely-arranged valve cylinder head of gasoline engine
CN203488285U (en) * 2013-09-17 2014-03-19 北汽福田汽车股份有限公司 Air inlet pipe and engine with air inlet pipe
CN106640455A (en) * 2016-11-25 2017-05-10 奇瑞汽车股份有限公司 Cylinder cover combustion system of middle-arranged oil atomizer for direct-injection gasoline engine
CN107842435A (en) * 2017-10-20 2018-03-27 奇瑞汽车股份有限公司 The high tumble inlet port of direct spray petrol engine in cylinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201507372U (en) * 2009-09-24 2010-06-16 重庆长安汽车股份有限公司 Air duct of gasoline engine with high tumble strength and high flow coefficient
CN103256114A (en) * 2013-04-28 2013-08-21 重庆小康工业集团股份有限公司 Obliquely-arranged valve cylinder head of gasoline engine
CN203488285U (en) * 2013-09-17 2014-03-19 北汽福田汽车股份有限公司 Air inlet pipe and engine with air inlet pipe
CN106640455A (en) * 2016-11-25 2017-05-10 奇瑞汽车股份有限公司 Cylinder cover combustion system of middle-arranged oil atomizer for direct-injection gasoline engine
CN107842435A (en) * 2017-10-20 2018-03-27 奇瑞汽车股份有限公司 The high tumble inlet port of direct spray petrol engine in cylinder

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111365139A (en) * 2018-12-25 2020-07-03 长城汽车股份有限公司 Cylinder head and internal combustion engine
CN110296019A (en) * 2019-07-12 2019-10-01 江门市大长江集团有限公司 A kind of internal combustion engine with novel air inlet path
CN110296019B (en) * 2019-07-12 2024-05-31 江门市大长江集团有限公司 Internal combustion engine with novel air inlet channel
CN110953100A (en) * 2019-12-13 2020-04-03 重庆隆鑫机车有限公司 Motor tricycle engine advances exhaust system and engine
WO2022016403A1 (en) * 2020-07-22 2022-01-27 宁波吉利罗佑发动机零部件有限公司 Engine combustion system, gasoline engine for hybrid vehicle, and vehicle
EP4151849A4 (en) * 2020-07-22 2023-07-19 Ningbo Geely Royal Engine Components Co., Ltd. Engine combustion system, gasoline engine for hybrid vehicle, and vehicle
WO2022236457A1 (en) * 2021-05-08 2022-11-17 浙江吉利控股集团有限公司 Combustion system for vehicle and vehicle
EP4293209A4 (en) * 2021-05-08 2024-04-24 Zhejiang Geely Holding Group Co., Ltd. Combustion system for vehicle and vehicle
CN116378844A (en) * 2023-06-05 2023-07-04 潍柴动力股份有限公司 Air passage structure, cylinder cover and miller molded line engine
CN116378844B (en) * 2023-06-05 2023-08-18 潍柴动力股份有限公司 Air passage structure, cylinder cover and miller molded line engine

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Application publication date: 20181123