CN109653886A - A kind of engine exhaust heat riser - Google Patents
A kind of engine exhaust heat riser Download PDFInfo
- Publication number
- CN109653886A CN109653886A CN201811477979.6A CN201811477979A CN109653886A CN 109653886 A CN109653886 A CN 109653886A CN 201811477979 A CN201811477979 A CN 201811477979A CN 109653886 A CN109653886 A CN 109653886A
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- CN
- China
- Prior art keywords
- cylinder
- runner
- exhaust
- grouping
- engine
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
- F02D41/0082—Controlling each cylinder individually per groups or banks
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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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/16—Control of the pumps by bypassing charging air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
- F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The invention discloses a kind of engine exhaust heat risers, belong to engine art, engine consumption is often led to for the existing common method for improving delivery temperature to increase, or it improves the temperature of exhaust to desired degree and spends high problem, the invention proposes be grouped cylinder, increasing intake-air throttle valve keeps one group of cylinder intake adjustable, air-fuel ratio in each group cylinder is set to reach the ratio most beneficial for exhaust-gas temperature rising, the amount of fuel for being injected into adjustable air intake cylinder will be reduced, increase the penetrating amount of fuel of other grouping cylinders, keep the torque of engine constant, realize the effect for promoting exhaust system temperature, achieve the purpose that the temperature of exhaust improves under the premise of oil consumption can not be increased.
Description
Technical field
The invention belongs to engine art, in particular to a kind of engine exhaust heat riser.
Background technique
Increasingly strict with emission regulation, exhaust gas treatment device is also continuously added in the exhaust stream of engine, with
It reduces or removes gas (such as nitrogen oxides and particle emission), to reach the requirement of emission regulation.Now with it is various not
The exhaust aftertreatment equipment of same type, such as diesel oxidation catalyst or selective catalytic reduction (SCR) system, for not
The particle emission or NO of same typexThe processing of emission.
In the operational process of after-treatment device, temperature needs to maintain minimum threshold temperature or more, so that system can be with
Effectively run.For example, SCR system will have minimum threshold temperature, if SCR system under minimum threshold temperature, urea
It is not easy to decompose and is hydrolyzed into NH3, in this case, SCR system will not satisfactorily reduce NOxIt is horizontal.Therefore, it can set
It is set to and urea is just only added to SCR system when SCR system temperature is higher than urea minimum threshold temperature, thus by SCR system
It is limited to just run when SCR system temperature is higher than minimum threshold temperature.
When engine cold-start, SCR system is initially cold conditions, is then gradually warmed up by exhaust.However, it is necessary to when a bit
Between make SCR system temperature be more than its operation minimum threshold temperature.Therefore, it is desirable to which reducing makes the temperature of SCR system reach it
Time spent by the minimum threshold temperature of operation.
With the lengthening of working time, the particulate matter accumulated on DPF is more and more, it will increases exhaust back pressure, influences to send out
The ventilation of motivation, causes output power to reduce, and oil consumption increases.It needs delivery temperature to improve certain temperature or more, makes in exhaust
Certain oxides, such as NO2And O2Deng particulate matter that also can voluntarily in oxidation particle object filter, to realize particulate regeneration
Purpose.
The existing common method for improving delivery temperature often leads to engine consumption increase, or improves the temperature of exhaust
It is spent to desired degree high.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of engine exhaust heat riser, wherein the engine by
Cylinder more than two is constituted, wherein one group is adjustable gas circuit cylinder 1, other groups are independent grouping cylinder 2；Adjustable gas circuit cylinder 1
By inlet manifold 3 connect the first air inlet pipeline 4, each group independently be grouped cylinder 2 pass through inlet manifold 3 connect it is respective be grouped into
Air pipe 5；Each grouping air inlet pipeline 5 and the first air inlet pipeline 4 are both connected on inlet manifold 10, input gas by inlet manifold 10
Body；Adjustable gas circuit cylinder 1 connects gas exhaust piping 8 by exhaust manifold 7, and each group is independently grouped cylinder 2 and is connected by exhaust manifold 7
It is grouped gas exhaust piping 9；First air inlet pipeline 4 is equipped with air inlet switch valve 6, for control adjustable gas circuit cylinder 1 open and
It closes；
The turbocharger 11 can only have a runner or tool there are two equal-sized symmetrical turbine runner,
The unequal Asymmetric Vortex wheel runner of size there are two can having；When turbocharger 17 has channel turbine, connection is independent
It is grouped the big runner of the asymmetric turbine of the grouping input turbocharger 11 of gas exhaust piping 9 of cylinder 2, or symmetrical turbine runner
One of runner；The adjustable exhaust of gas circuit cylinder 1 can input the asymmetric turbine of turbocharger 11 by gas exhaust piping 8
Small flow channels, or another runner of symmetrical turbine runner；When turbocharger 11 only has a runner, 8 He of gas exhaust piping
It is grouped gas exhaust piping 9 and inputs 11 turbine runner of turbocharger using same root pipeline.
Beneficial effects of the present invention:
It is controlled by air inlet restriction valve regulation and reduces the air inflow for entering adjustable gas circuit cylinder 1, make air-fuel in two groups of cylinders
Reach the ratio most beneficial for exhaust-gas temperature rising than (fresh air and fuel oil quality ratio), reduction is injected into adjustable gas circuit cylinder
1 amount of fuel, and increase the penetrating amount of fuel into independent grouping cylinder 2, it keeps the torque of engine constant, realizes the row of being promoted
The effect of gas system temperature.The relatively currently used method for promoting delivery temperature, because the fuel oil of injection is higher in cylinder
The thermal efficiency burns, and restriction loss has occurred by intake-air throttle valve in only a small amount of fresh air, and fuel consumption is less.
Detailed description of the invention
Fig. 1 is a kind of engine exhaust heat riser schematic diagram of the present invention.
Fig. 2 is a kind of engine exhaust heat riser another embodiment schematic diagram of the present invention.
Specific embodiment
A kind of method and apparatus of engine exhaust heating of the present invention can refer to the description of attached drawing 1~2.
A kind of engine exhaust heat riser, wherein the engine is made of cylinder more than two, wherein one group is can
Regulating the qi flowing in the channels road cylinder 1, other groups are independent grouping cylinder 2；Adjustable gas circuit cylinder 1 connects the first air inlet pipeline by inlet manifold 3
4, each group is independently grouped cylinder 2 and connects respective grouping air inlet pipeline 5 by inlet manifold 3；Each grouping air inlet pipeline 5 and first
Air inlet pipeline 4 is both connected on inlet manifold 10, inputs gas by inlet manifold 10；Adjustable gas circuit cylinder 1 passes through exhaust manifold 7
Gas exhaust piping 8 is connected, each group is independently grouped cylinder 2 and passes through the connection grouping gas exhaust piping 9 of exhaust manifold 7；First air inlet pipe
Road 4 is equipped with air inlet switch valve 6, opens and closes for controlling adjustable gas circuit cylinder 1；
The turbocharger 11 can only have a runner or tool there are two equal-sized symmetrical turbine runner,
The unequal Asymmetric Vortex wheel runner of size there are two can having；When turbocharger 17 has channel turbine (such as Fig. 2), even
Connect the independently big runner of the asymmetric turbine for being grouped the input turbocharger 11 of gas exhaust piping 9 of grouping cylinder 2 or symmetrical whirlpool
Take turns the one of runner of runner；The adjustable exhaust of gas circuit cylinder 1 can input the asymmetry of turbocharger 11 by gas exhaust piping 8
The small flow channels of turbine, or another runner of symmetrical turbine runner；When turbocharger 11 only has a runner (as schemed
1), gas exhaust piping 8 and grouping gas exhaust piping 9 use same root pipeline input 11 turbine runner of turbocharger.
Working principle:
It is defeated according to the torque of engine when needing that heating is exhausted when different load runs the engine
Artificial situation, intake-air throttle valve will enter the air inflow of adjustable gas circuit cylinder 1 by adjusting control reduction, in order to make in two groups of cylinders
Air-fuel ratio (fresh air and fuel oil quality ratio) reaches the ratio most beneficial for exhaust-gas temperature rising, and reduction is injected into adjustable gas circuit
The amount of fuel of cylinder 1, and increase the penetrating amount of fuel into independent grouping cylinder 2, keep the torque of engine constant.
Be relatively low run the engine in medium loading range when, when needing that heating is exhausted, air inlet
Throttle valve will close, and adjustable gas circuit cylinder 1 will be entered without fresh air, while no longer spraying into fuel oil to adjustable gas circuit cylinder 1,
Increase the amount of fuel for spraying into independent grouping cylinder 2, keeps the torque of engine constant.
The delivery temperature that input exhaust gas post-treatment device will be promoted in this way, even in the lower feelings of the engine loading
Under shape, exhaust gas post-treatment device can still reach its efficient operation and need temperature, and to including in exhaust under the conditions of the temperature
Harmful substance carry out especially adequately conversion or processing.The relatively currently used method for promoting delivery temperature, because of injection
Fuel oil in cylinder the higher thermal efficiency burn, and only a small amount of fresh air by intake-air throttle valve have occurred throttling damage
It loses, fuel consumption is less.
Claims (1)
1. a kind of engine exhaust heat riser, which is characterized in that wherein the engine is made of cylinder more than two, wherein
One group is adjustable gas circuit cylinder (1), other groups are independent grouping cylinder (2)；Adjustable gas circuit cylinder (1) passes through inlet manifold (3)
It connects the first air inlet pipeline (4), each group is independently grouped cylinder (2) and connects respective grouping air inlet pipeline by inlet manifold (3)
(5)；Each grouping air inlet pipeline (5) and the first air inlet pipeline (4) are both connected on inlet manifold (10), defeated by inlet manifold (10)
Enter gas；Adjustable gas circuit cylinder (1) is independently grouped cylinder (2) and is passed through by exhaust manifold (7) connection gas exhaust piping (8), each group
Exhaust manifold (7) connection grouping gas exhaust piping (9)；First air inlet pipeline (4) is equipped with air inlet switch valve (6), for controlling
Adjustable gas circuit cylinder (1) is made to open and close；
The turbocharger (11) can only have a runner or tool there are two equal-sized symmetrical turbine runner, can also
There are two the unequal Asymmetric Vortex wheel runners of size for tool；When turbocharger (17) have channel turbine, connection is independent
The big runner of the asymmetric turbine of grouping gas exhaust piping (9) input turbocharger (11) of grouping cylinder (2) or symmetrical whirlpool
Take turns the one of runner of runner；Adjustable gas circuit cylinder (1) exhaust can input turbocharger (11) by gas exhaust piping (8)
The small flow channels of asymmetric turbine, or another runner of symmetrical turbine runner；When turbocharger (11) only has a runner
When, gas exhaust piping (8) and grouping gas exhaust piping (9) use same root pipeline input turbocharger (11) turbine runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811477979.6A CN109653886A (en) | 2018-12-05 | 2018-12-05 | A kind of engine exhaust heat riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811477979.6A CN109653886A (en) | 2018-12-05 | 2018-12-05 | A kind of engine exhaust heat riser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109653886A true CN109653886A (en) | 2019-04-19 |
Family
ID=66112391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811477979.6A Pending CN109653886A (en) | 2018-12-05 | 2018-12-05 | A kind of engine exhaust heat riser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109653886A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529270A (en) * | 2019-08-22 | 2019-12-03 | 一汽解放汽车有限公司 | A kind of control method of engine exhaust temperature elevation system |
| CN113294252A (en) * | 2021-07-16 | 2021-08-24 | 杜福银 | Variable displacement engine and control method |
| WO2023165337A1 (en) * | 2022-03-04 | 2023-09-07 | 潍柴动力股份有限公司 | Combined exhaust pipe structure and engine exhaust system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002256854A (en) * | 2001-02-28 | 2002-09-11 | Toyota Motor Corp | Exhaust emission control device for internal combustion engine |
| US6634167B1 (en) * | 1999-11-08 | 2003-10-21 | Toyota Jidosha Kabushiki Kaisha | Exhaust temperature raising apparatus and method for internal combustion engine |
| EP2206898A1 (en) * | 2009-01-13 | 2010-07-14 | MAN Nutzfahrzeuge Aktiengesellschaft | Method for treating an exhaust gas flow of a multi-cylinder combustion engine of a vehicle and exhaust gas treatment device |
| CN103835822A (en) * | 2012-11-27 | 2014-06-04 | 通用汽车环球科技运作有限责任公司 | Method for controlling exhaust gas re-circulation system in an internal combustion engine |
| CN104508284A (en) * | 2012-08-01 | 2015-04-08 | 戴姆勒股份公司 | Method for treating exhaust gas and arrangement of an exhaust gas system on an internal combustion engine |
| US20160131057A1 (en) * | 2014-11-12 | 2016-05-12 | Deere And Company | Fresh air flow and exhaust gas recirculation control system and method |
| CN209510475U (en) * | 2018-12-05 | 2019-10-18 | 一汽解放汽车有限公司 | A kind of engine exhaust heat riser |
-
2018
- 2018-12-05 CN CN201811477979.6A patent/CN109653886A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6634167B1 (en) * | 1999-11-08 | 2003-10-21 | Toyota Jidosha Kabushiki Kaisha | Exhaust temperature raising apparatus and method for internal combustion engine |
| JP2002256854A (en) * | 2001-02-28 | 2002-09-11 | Toyota Motor Corp | Exhaust emission control device for internal combustion engine |
| EP2206898A1 (en) * | 2009-01-13 | 2010-07-14 | MAN Nutzfahrzeuge Aktiengesellschaft | Method for treating an exhaust gas flow of a multi-cylinder combustion engine of a vehicle and exhaust gas treatment device |
| CN104508284A (en) * | 2012-08-01 | 2015-04-08 | 戴姆勒股份公司 | Method for treating exhaust gas and arrangement of an exhaust gas system on an internal combustion engine |
| CN103835822A (en) * | 2012-11-27 | 2014-06-04 | 通用汽车环球科技运作有限责任公司 | Method for controlling exhaust gas re-circulation system in an internal combustion engine |
| US20160131057A1 (en) * | 2014-11-12 | 2016-05-12 | Deere And Company | Fresh air flow and exhaust gas recirculation control system and method |
| CN209510475U (en) * | 2018-12-05 | 2019-10-18 | 一汽解放汽车有限公司 | A kind of engine exhaust heat riser |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529270A (en) * | 2019-08-22 | 2019-12-03 | 一汽解放汽车有限公司 | A kind of control method of engine exhaust temperature elevation system |
| CN113294252A (en) * | 2021-07-16 | 2021-08-24 | 杜福银 | Variable displacement engine and control method |
| WO2023165337A1 (en) * | 2022-03-04 | 2023-09-07 | 潍柴动力股份有限公司 | Combined exhaust pipe structure and engine exhaust system |
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