CN101832200A - Waste gas recirculating device and recirculating method for miniature gasoline engine - Google Patents

Waste gas recirculating device and recirculating method for miniature gasoline engine Download PDF

Info

Publication number
CN101832200A
CN101832200A CN201010127839A CN201010127839A CN101832200A CN 101832200 A CN101832200 A CN 101832200A CN 201010127839 A CN201010127839 A CN 201010127839A CN 201010127839 A CN201010127839 A CN 201010127839A CN 101832200 A CN101832200 A CN 101832200A
Authority
CN
China
Prior art keywords
gasoline engine
exhaust gas
miniature gasoline
flow control
control valve
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
CN201010127839A
Other languages
Chinese (zh)
Inventor
林漫群
阎希成
贾滨
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.)
TIANJIN INTERNAL-COMBUSTION ENGINE INST
Original Assignee
TIANJIN INTERNAL-COMBUSTION ENGINE INST
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 TIANJIN INTERNAL-COMBUSTION ENGINE INST filed Critical TIANJIN INTERNAL-COMBUSTION ENGINE INST
Priority to CN201010127839A priority Critical patent/CN101832200A/en
Publication of CN101832200A publication Critical patent/CN101832200A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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

Abstract

The invention relates to a waste gas recirculating device and a recirculating method for a miniature gasoline engine. A waste gas recirculating loop is additionally arranged between a gas exhaust system and a gas inlet system of the miniature gasoline engine and comprises a waste gas flow control valve. A gas inlet of the flow control valve is communicated with the gas exhaust system through a gas taking pipe, and a gas outlet of the flow control valve is communicated with a gas inlet of a one-way valve through a guide pipe. A gas outlet of the one-way valve is communicated with the gas inlet system of the gasoline engine through a waste gas guide pipe. A negative pressure port of the flow control valve is communicated with a gas inlet manifold of the miniature gasoline engine through a negative pressure taking pipe. The opening degree of the flow control valve is controlled by the negative pressure in the gas inlet manifold of the miniature gasoline engine. By regulating a reset spring and an elastic membrane in the flow control valve, the pressure in the gas inlet manifold is set to be reference pressure when the miniature gasoline engine runs in idle, and the flow control valve is closed at the same time. All parts of the invention are mechanical parts, and the whole system can realize the normal operation of the waste gas recirculation without power supply.

Description

A kind of miniature gasoline engine Exhaust gas recirculation device and method for recycling
[technical field]:
The invention belongs to miniature gasoline engine EGR Technology field.Relate to a kind of Exhaust gas recirculation device that drives the exhaust gas recirculation flow control by miniature gasoline engine gas handling system negative pressure.This device is applicable to petrol engine NOx emission control, is particularly useful for the application of miniature gasoline engine such space compactness and cost requirement harshness, power supply instability or unregulated power supply, for example motor gasoline engine and general small-size gasoline engine etc.
[background technique]:
The flow control of exhaust gas recirculation (EGR) is the key link of Exhaust gas recirculation device, and recirculated exhaust gas flow should be followed the miniature gasoline engine working conditions change and be regulated.Exhaust gas recirculation device of the prior art has various ways, be to disclose a kind of " the EGR control gear of internal-combustion engine " in No. 200580040554.3 the Chinese invention patent as the patent No., this exhaust gas recirculation control has the function of recirculated exhaust gas flow control.But, because this apparatus structure complexity is difficult to arrange that Zhuan Zhi cost also is difficult to bear for the miniature gasoline engine application simultaneously in the miniature gasoline engine of bulk compactness.Secondly, in a large amount of miniature gasoline engine applications, as general small-size gasoline engine and motorcycle, miniature gasoline engine itself has only simple ignition mechanism, as induction ignition system, and requiring miniature gasoline engine still can move under the condition of battery not having, considerable application being arranged even require is not having proper functioning under power supply and the battery condition.Therefore the running of various sensors and control and performance element under the condition that does not have power supply to ensure of the control unit of this patent can't be worked.
The patent No. is to disclose a kind of " determining the carring method of EGR flow " in 200810127273.7 the patent of invention.This patent is to utilize Venturi tube to determine the flow of miniature gasoline engine exhaust gas recirculation, and miniature gasoline engine does not have enough spatial arrangement Venturi tubes equally.
Patent 200580040554.3 is a foundation with the miniature gasoline engine throttle opening, take into account definite miniature gasoline engine running such as exhaust gas recirculation valve opening and miniature gasoline engine rotating speed operating mode, therefore need the be correlated with measurement of miniature gasoline engine operating parameters of various sensors, also need data acquisition unit.
Patent 200810127273.7 also needs to increase Venturi tube and requires to measure temperature and pressure for determining the difference of recirculated exhaust gas flow and desired flow.These systems simplify also can't break away from any case needs sensor and automatical control system, and in the miniature gasoline engine field, fitness for purpose is not having stable condition of power supply, or requires proper functioning under (as battery or the generator) condition of not powering fully, and said apparatus can't use.Even if increase power supply unit for this reason, space and cost problem that complicated system causes also will make it can't be applied to the miniature gasoline engine field.
[summary of the invention]:
The present invention seeks to overcome the prior art above shortcomings, at existing EGR Technology, for adapting to the distinctive spatial structure compactness of miniature gasoline engine, power supply condition difference or not having the application of power supply, provide a kind of miniature gasoline engine Exhaust gas recirculation device and method for recycling.
Miniature gasoline engine Exhaust gas recirculation device provided by the invention, be between the vent systems of miniature gasoline engine and miniature gasoline engine gas handling system, to set up an exhaust gas recirculation circuit, this loop comprises an exhaust gas flow control valve, the suction port of exhaust gas flow control valve is communicated with vent systems by getting tracheae, the air outlet of exhaust gas flow control valve is communicated with the suction port of one-way valve by conduit, the air outlet of one-way valve is communicated with engine aspirating system by waste gas duct, waste gas duct can be arranged in upstream or the downstream that is positioned at miniature gasoline engine gas handling system closure, the negative pressure interface of exhaust gas flow control valve is communicated with the miniature gasoline engine intake manifold by negative pressure pressure pipe, as shown in Figure 2.
Described exhaust gas flow control valve is separated into negative pressure chamber and working room's two-part by the flexible sheet that is provided with in the valve with body cavity, negative pressure chamber connects negative pressure pressure pipe by the negative pressure interface, be provided with the plunger of fixedlying connected with flexible sheet in the working room by plunger rod, be provided with a dunnage in the working room between plunger and flexible sheet, plunger rod between dunnage and the plunger is provided with Returnning spring, the be placed in both sides of plunger of the suction port of exhaust gas flow control valve and air outlet.
The aperture of described exhaust gas flow control valve is negative pressure control in the miniature gasoline engine intake manifold by the working pressure of negative pressure chamber, by adjust Returnning spring with miniature gasoline engine when idle pressure in the intake manifold be made as reference pressure, and exhaust gas flow control valve at this moment is set to closed condition.
The present invention provides a kind of miniature gasoline engine exhaust gas recirculation method simultaneously, and this method comprises:
The first, between the vent systems of miniature gasoline engine and miniature gasoline engine gas handling system, set up an exhaust gas recirculation circuit;
The second, an exhaust gas flow control valve is set in this loop, the suction port of exhaust gas flow control valve is communicated with the vent systems of miniature gasoline engine by getting tracheae, the air outlet of exhaust gas flow control valve is communicated with the suction port of one-way valve by conduit, the air outlet of one-way valve is communicated with the gas handling system of miniature gasoline engine by waste gas duct, and the negative pressure interface of exhaust gas flow control valve is communicated with the miniature gasoline engine intake manifold by negative pressure pressure pipe;
Three, the aperture of exhaust gas flow control valve is by negative pressure control in the miniature gasoline engine intake manifold, and the absolute pressure in the intake manifold is made as reference pressure when idle with miniature gasoline engine, and exhaust gas flow control valve at this moment is set to closed condition;
Four, when absolute pressure is greater than reference pressure in the miniature gasoline engine intake manifold, the exhaust gas flow control valve is opened, the exhaust gas flow size of its aperture that is backflow determines that by the difference that absolute pressure in the miniature gasoline engine intake manifold is higher than reference pressure big more aperture of difference and exhaust gas flow are also big more;
Five, when the pressure in the miniature gasoline engine gas handling system is instantaneous when surpassing the vent systems internal pressure, gas recirculation system is cut off under the effect of one-way valve, and blocking-up fresh air or fuel-air mixture flow in the miniature gasoline engine vent systems along the gas recirculation system pipeline.
Advantage of the present invention and good effect:
The present invention utilizes the coherence control recirculated exhaust gas flow between miniature gasoline engine air-intake negative-pressure and the miniature gasoline engine load, makes it with load variations.Because the miniature gasoline engine air-intake negative-pressure can provide driving force, therefore can utilize the miniature gasoline engine air-intake negative-pressure directly to drive the recirculated exhaust gas flow control valve, the device operation can not need power supply, has simplified system architecture.
[description of drawings]:
Fig. 1 is an Exhaust gas recirculation device structural representation in the prior art. (the China's invention that is No. 200580040554.3 is special Disclosed system diagram in the profit)
Fig. 2 is an exhaust gas recirculation control gear structural representation of the present invention.
Fig. 3 is an embodiment of the invention exhaust gas recirculation control gear structural representation.
Fig. 4 is a mechanical type exhaust gas flow control valve structural representation of the present invention.
Fig. 5 is an embodiment of the invention one-way valve structures schematic representation.
Fig. 6 is that embodiment of the invention exhaust gas recirculation control gear flow control valve opens and closes pressure setting schematic representation.
Fig. 7 is that embodiment of the invention exhaust gas recirculation control gear flow control valve opens and closes pressure and aperture concerns schematic representation.
Among the figure, 1 waste gas is got tracheae, 2 exhaust gas flow control valves, 3 one-way valves, 4 waste gas ducts, 5 negative pressure pressure pipes, the empty filter of 6 air inlets, 7 inlet flow pipelines, 8 closures, 9 intake manifold, 10 outlet pipes, 11 negative pressure interfaces, 12 flexible sheets, 13 Returnning springs, 14 plungers, 15 exhaust gas flow control valve air outlets, 16 exhaust gas flow control valve suction ports, 17 negative pressure chamber, 18 one-way valve air outlets, 19 reeds, 20 check valve inlet.
[embodiment]:
Embodiment 1: miniature gasoline engine exhaust gas recirculation method, and referring to Fig. 2, this method comprises:
The first, between the outlet pipe of miniature gasoline engine and miniature gasoline engine air intake duct system, set up an exhaust gas recirculation circuit;
The second, an exhaust gas flow control valve is set in this loop, the suction port of exhaust gas flow control valve is communicated with outlet pipe by getting tracheae, the air outlet of exhaust gas flow control valve is communicated with the suction port of one-way valve by conduit, the air outlet of one-way valve is communicated with the gas handling system of miniature gasoline engine by waste gas duct, and the negative pressure interface of exhaust gas flow control valve is communicated with the miniature gasoline engine intake manifold by negative pressure pressure pipe;
Three, the aperture of exhaust gas flow control valve is by negative pressure control in the miniature gasoline engine intake manifold, and the absolute pressure in the intake manifold is made as reference pressure when idle with miniature gasoline engine, and exhaust gas flow control valve at this moment is set to closed condition;
Four, when absolute pressure is greater than reference pressure in the miniature gasoline engine intake manifold, the exhaust gas flow control valve is opened, the exhaust gas flow size of its aperture that is backflow determines that by the difference that absolute pressure in the miniature gasoline engine intake manifold is higher than reference pressure big more aperture of difference and exhaust gas flow are also big more;
Five, when the pressure in the miniature gasoline engine gas handling system is instantaneous when surpassing the vent systems internal pressure, gas recirculation system is cut off under the effect of one-way valve, and blocking-up fresh air or fuel-air mixture flow in the miniature gasoline engine vent systems along the gas recirculation system pipeline.
Embodiment 2, miniature gasoline engine Exhaust gas recirculation device
As shown in Figure 3, be that example illustrates exhaust gas recirculation of the present invention (EGR) flow control system with the single cylinder petrol engine.Miniature gasoline engine Exhaust gas recirculation device provided by the invention, be between the outlet pipe 10 of miniature gasoline engine and miniature gasoline engine gas handling system, to set up an exhaust gas recirculation circuit, this loop comprises an exhaust gas flow control valve 2, the suction port 16 of exhaust gas flow control valve is got tracheae 1 by waste gas and is communicated with outlet pipe 10, the air outlet 15 of exhaust gas flow control valve 2 is communicated with the suction port 20 of one-way valve 3 by conduit, the air outlet 18 of one-way valve is communicated with the gas handling system gas handling system by waste gas duct 4, conduit can be arranged in upstream or the downstream that is positioned at miniature gasoline engine gas handling system closure 8, and the negative pressure interface 11 of exhaust gas flow control valve is communicated with miniature gasoline engine intake manifold 9 by negative pressure pressure pipe 5.
Fig. 4 is the structural representation of mechanical type exhaust gas flow control valve 2 among Fig. 3.The exhaust gas flow control valve is separated into negative pressure chamber 17 and working room's two-part by the flexible sheet 12 that is provided with in the valve with body cavity, negative pressure chamber connects negative pressure pressure pipe 5 by negative pressure interface 11, be provided with the plunger 14 of fixedlying connected with flexible sheet in the working room by plunger rod, be provided with a dunnage in the working room between plunger and flexible sheet, plunger rod between dunnage and the plunger is provided with Returnning spring 13, the be placed in both sides of plunger 14 of the suction port of exhaust gas flow control valve 16 and air outlet 15.
Fig. 5 is a reed-type one-way valve structures schematic representation, and check valve inlet 20 links to each other with exhaust gas flow control valve 2, and waste gas is linked to each other with waste gas duct 4 by one-way valve air outlet 18.When check valve inlet 20 pressure during greater than one-way valve air outlet 18 pressure, reed 19 is opened, and waste gas can circulate.Otherwise when one-way valve air outlet 18 pressure during greater than check valve inlet 20 pressure, reed 19 cuts out under reverse pressure effect.
Working principle of the present invention and working procedure:
Because there is certain pressure reduction in outlet pipe 10 and gas handling system in the miniature gasoline engine exhaust gas discharged between the two, under the effect of this pressure reduction, exhaust gas recirculation circuit is back to miniature gasoline engine gas handling system realization exhaust gas recirculation through getting tracheae 1, exhaust gas flow control valve 2, one-way valve 3 and waste gas duct 4 successively.The aperture of exhaust gas flow control valve 2 is controlled by the miniature gasoline engine intake manifold 9 interior air-intake negative-pressures that negative pressure pressure pipe 5 transmits, the aperture that increases (that is, the absolute pressure in the intake manifold reduces) exhaust gas flow control valve 2 with the air-intake negative-pressure in the miniature gasoline engine intake manifold 9 reduces.The present invention with miniature gasoline engine when idle absolute pressures in the intake manifold 9 be benchmark, when the absolute pressure in the intake manifold 9 was lower than this reference pressure, exhaust gas flow control valve 2 was in closing state.In the process of miniature gasoline engine anticlimax load, the air inlet absolute pressure also will be reduced to rapidly below the reference pressure, also can realize blocking exhaust gas recirculation this moment.After miniature gasoline engine strengthens load by idling operation, the absolute pressures in the intake manifold 9 also will increase thereupon, and exhaust gas flow control valve 2 is opened rapidly from closed condition.When waste gas duct 4 place gas handling system internal pressures are instantaneous when surpassing the internal pressure of outlet pipe 10, one-way valve 3 is closed, and fresh air capable of blocking or fuel-air mixture flow into outlet pipe 10 along gas recirculation system.Waste gas duct 4 can be arranged in the upstream or the downstream of miniature gasoline engine gas handling system closure 8.
Negative pressure interface 11 links to each other with negative pressure pressure pipe 5, and flexible sheet 12 separates negative pressure chamber 17 and working room, and the air inlet absolute pressure is delivered to negative pressure chamber 17 by negative pressure pressure pipe 5.The miniature gasoline engine load is big more, and the air inlet absolute pressure in the intake manifold 9 is high more, and exhaust gas flow control valve diaphragm 12 both sides pressure reduction are just less, and it is just high more to lift the position at the effect lower plunger 14 of spring 13.The waste gas that this moment, waste gas was got in the tracheae 1 can have 15 outflows from the waste gas air outlet of bigger flow area,, is in the Pa left field of opening district and Fig. 7 of Fig. 6 that is.The miniature gasoline engine load is low more, and the air inlet absolute pressure reduces, and diaphragm 12 both sides pressure reduction increase, and plunger 14 is pulled down, causes waste gas circulation reduced cross-sectional,, is in transition zone and the Pa of Fig. 7 and the zone between the Pb of Fig. 6 that is.By actual measurement miniature gasoline engine idling operation air-intake negative-pressure, be Pb, by setting spring rigidity, driving lower plunger 14 at air-intake negative-pressure when making miniature gasoline engine be in idling operation or anticlimax load is moved downward to closed condition, at this moment, waste gas will be blocked by flow control valve 2,, be in the closed zone, pass of Fig. 6 and the Pb right side area of Fig. 7 that is.
Should be mechanical type with all parts of embodiment, because absolute pressure in the intake manifold 9 and the pressure reduction between the ambient atmosphere pressure directly driving device formula exhaust gas flow control valve 2 realize that apertures control, so whole system need not power supply and can realize proper functioning.

Claims (5)

1. miniature gasoline engine Exhaust gas recirculation device, it is characterized in that between the vent systems of miniature gasoline engine and gas handling system, setting up an exhaust gas recirculation circuit, this loop comprises an exhaust gas flow control valve, the suction port of exhaust gas flow control valve is communicated with the vent systems of miniature gasoline engine by getting tracheae, the air outlet of exhaust gas flow control valve is communicated with the suction port of one-way valve by conduit, the air outlet of one-way valve is communicated with the gas handling system of miniature gasoline engine by conduit, and the negative pressure interface of exhaust gas flow control valve is communicated with the intake manifold of miniature gasoline engine by negative pressure pressure pipe.
2. miniature gasoline engine Exhaust gas recirculation device according to claim 1, it is characterized in that described exhaust gas flow control valve is separated into negative pressure chamber and working room's two-part by the flexible sheet that is provided with in the valve with body cavity, negative pressure chamber connects negative pressure pressure pipe by the negative pressure interface, be provided with the plunger of fixedlying connected with flexible sheet in the working room by plunger rod, be provided with a dunnage in the working room between plunger and flexible sheet, plunger rod between dunnage and the plunger is provided with Returnning spring, the be placed in both sides of plunger of the suction port of exhaust gas flow control valve and air outlet.
3. miniature gasoline engine Exhaust gas recirculation device according to claim 2, the aperture that it is characterized in that described exhaust gas flow control valve is negative pressure control in the miniature gasoline engine intake manifold by the working pressure of negative pressure chamber, by adjust Returnning spring with miniature gasoline engine when idle pressure in the intake manifold be made as reference pressure, and exhaust gas flow control valve that is plunger at this moment is set to closed condition.
4. according to each described miniature gasoline engine Exhaust gas recirculation device among the claim 1-3, it is characterized in that described waste gas duct can be arranged in the upstream or the downstream of miniature gasoline engine gas handling system closure.
5. miniature gasoline engine exhaust gas recirculation method is characterized in that this method comprises:
The first, between the vent systems of miniature gasoline engine and gas handling system, set up an exhaust gas recirculation circuit;
The second, an exhaust gas flow control valve is set in above-mentioned exhaust gas recirculation circuit, the suction port of exhaust gas flow control valve is communicated with the vent systems of miniature gasoline engine by getting tracheae, the air outlet of exhaust gas flow control valve is communicated with the suction port of one-way valve by conduit, the air outlet of one-way valve is communicated with the gas handling system of miniature gasoline engine by waste gas duct, and the negative pressure interface of exhaust gas flow control valve is communicated with the miniature gasoline engine intake manifold by negative pressure pressure pipe;
Three, the aperture of exhaust gas flow control valve is by negative pressure control in the miniature gasoline engine intake manifold, and the pressure in the intake manifold is made as reference pressure when idle with miniature gasoline engine, and exhaust gas flow control valve at this moment is set to closed condition;
Four, when absolute pressure is greater than reference pressure in the miniature gasoline engine intake manifold, the exhaust gas flow control valve is opened, the exhaust gas flow size of its aperture that is backflow determines that by the difference that absolute pressure in the miniature gasoline engine intake manifold is higher than reference pressure big more aperture of difference and exhaust gas flow are also big more;
Five, when the pressure in the miniature gasoline engine gas handling system is instantaneous when surpassing the vent systems internal pressure, gas recirculation system is cut off under the effect of one-way valve, and blocking-up fresh air or fuel-air mixture flow in the miniature gasoline engine vent systems along the gas recirculation system pipeline.
CN201010127839A 2010-03-19 2010-03-19 Waste gas recirculating device and recirculating method for miniature gasoline engine Pending CN101832200A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010127839A CN101832200A (en) 2010-03-19 2010-03-19 Waste gas recirculating device and recirculating method for miniature gasoline engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010127839A CN101832200A (en) 2010-03-19 2010-03-19 Waste gas recirculating device and recirculating method for miniature gasoline engine

Publications (1)

Publication Number Publication Date
CN101832200A true CN101832200A (en) 2010-09-15

Family

ID=42716379

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201010127839A Pending CN101832200A (en) 2010-03-19 2010-03-19 Waste gas recirculating device and recirculating method for miniature gasoline engine

Country Status (1)

Country Link
CN (1) CN101832200A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134421A (en) * 2015-10-15 2015-12-09 广西玉柴机器股份有限公司 EGR (exhaust gas recirculation) system of engine
CN110145417A (en) * 2019-06-28 2019-08-20 潍柴动力股份有限公司 It is a kind of for promoting the pressurizing device of EGR rate
CN113474548A (en) * 2019-02-19 2021-10-01 爱三工业株式会社 EGR device of engine
CN113864645A (en) * 2021-08-25 2021-12-31 上海空间推进研究所 Blowing system for rail-controlled engine ground test

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350013A (en) * 1979-02-09 1982-09-21 Nissan Motor Company, Limited Exhaust gas recirculation system
US4736728A (en) * 1986-01-17 1988-04-12 Toyota Jidosha Kabushiki Kaisha Exhaust gas recirculating system
US5937834A (en) * 1996-10-24 1999-08-17 Isuzu Motors Exhaust gas recirculation apparatus
CN2844465Y (en) * 2005-09-20 2006-12-06 上海中欧拓展实业有限公司 Waste-gas re-circulating valve
CN201106507Y (en) * 2007-10-01 2008-08-27 绵阳新晨动力机械有限公司 Internal combustion engine exhaust gas recirculation valve
CN201620976U (en) * 2010-03-19 2010-11-03 天津内燃机研究所 Waste gas recirculation device of miniature gasoline engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350013A (en) * 1979-02-09 1982-09-21 Nissan Motor Company, Limited Exhaust gas recirculation system
US4736728A (en) * 1986-01-17 1988-04-12 Toyota Jidosha Kabushiki Kaisha Exhaust gas recirculating system
US5937834A (en) * 1996-10-24 1999-08-17 Isuzu Motors Exhaust gas recirculation apparatus
CN2844465Y (en) * 2005-09-20 2006-12-06 上海中欧拓展实业有限公司 Waste-gas re-circulating valve
CN201106507Y (en) * 2007-10-01 2008-08-27 绵阳新晨动力机械有限公司 Internal combustion engine exhaust gas recirculation valve
CN201620976U (en) * 2010-03-19 2010-11-03 天津内燃机研究所 Waste gas recirculation device of miniature gasoline engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134421A (en) * 2015-10-15 2015-12-09 广西玉柴机器股份有限公司 EGR (exhaust gas recirculation) system of engine
CN113474548A (en) * 2019-02-19 2021-10-01 爱三工业株式会社 EGR device of engine
CN113474548B (en) * 2019-02-19 2023-09-15 爱三工业株式会社 EGR device of engine
CN110145417A (en) * 2019-06-28 2019-08-20 潍柴动力股份有限公司 It is a kind of for promoting the pressurizing device of EGR rate
CN110145417B (en) * 2019-06-28 2023-12-15 潍柴动力股份有限公司 Pressurizing device for improving EGR rate
CN113864645A (en) * 2021-08-25 2021-12-31 上海空间推进研究所 Blowing system for rail-controlled engine ground test
CN113864645B (en) * 2021-08-25 2023-10-13 上海空间推进研究所 Blowing system for ground test of rail control engine

Similar Documents

Publication Publication Date Title
CN102200050B (en) System for inducting air into engine
CN204239101U (en) Engine system
CN204212883U (en) Engine system
CN104343590A (en) Systems and methods for multiple aspirators for a constant pump rate
CN201620976U (en) Waste gas recirculation device of miniature gasoline engine
CN101832200A (en) Waste gas recirculating device and recirculating method for miniature gasoline engine
CN106337762A (en) Automobile fuel evaporation discharge control and diagnostic system
US4365597A (en) Split type internal combustion engine
CN103266968A (en) Adjusting device for realizing large EGR (exhaust gas recirculation) rate
US4411228A (en) Split type internal combustion engine
CN209163961U (en) Engine with supercharger fuel oil desorption system
JPS59168217A (en) Control apparatus for internal-combustion engine with supercharger
CN109458277A (en) Engine with supercharger fuel oil desorption system
CN204646409U (en) A kind of pressurized machine and anti-surge control device thereof
US11236706B2 (en) Evaporated fuel treatment device for engine
CN105402023A (en) Intake control system
CN205315116U (en) Internal -combustion engine control system that admits air
RU153136U1 (en) CAPACITY FORMATION SYSTEM
CN216518267U (en) Turbocharger waste gas bypass valve control mechanism and turbocharger
CN219299404U (en) Gas compressor recirculation system of gas engine
JP5570317B2 (en) Control method for internal combustion engine
CN220081547U (en) Auxiliary braking system
JP2995200B2 (en) Engine air supply
JP5577836B2 (en) Blow-by gas processing device for internal combustion engine
JPS61223223A (en) Control construction of supercharge pressure in internal-combustion engine with supercharger

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Open date: 20100915