CN106150774B - Engine assembly and vehicle with same - Google Patents
Engine assembly and vehicle with same Download PDFInfo
- Publication number
- CN106150774B CN106150774B CN201510139789.3A CN201510139789A CN106150774B CN 106150774 B CN106150774 B CN 106150774B CN 201510139789 A CN201510139789 A CN 201510139789A CN 106150774 B CN106150774 B CN 106150774B
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- Prior art keywords
- hydrogen
- chamber
- engine
- negative electrode
- guide rail
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000001257 hydrogen Substances 0.000 claims abstract description 57
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 57
- 238000005868 electrolysis reaction Methods 0.000 claims description 23
- 239000001301 oxygen Substances 0.000 claims description 22
- 229910052760 oxygen Inorganic materials 0.000 claims description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 31
- 239000007789 gas Substances 0.000 abstract description 29
- 239000000446 fuel Substances 0.000 description 18
- 239000000203 mixture Substances 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- 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
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention provides an engine assembly and a vehicle with the same, wherein the engine assembly comprises: an engine having an exhaust passage and an intake passage, the intake passage having an intake manifold and an intake manifold, the exhaust passage having an exhaust manifold and an exhaust manifold; the EGR loop is respectively connected with the exhaust passage and the intake passage, and is provided with an EGR cooler and an EGR valve; and a hydrogen gas supply system including: the hydrogen supply device is connected with the hydrogen guide rail and used for outputting hydrogen to the hydrogen guide rail, and the nozzle is connected with the hydrogen guide rail and used for injecting hydrogen into the air inlet manifold. According to the engine assembly provided by the embodiment of the invention, the problem that the combustion of the engine is unstable due to EGR gas can be solved.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to an engine assembly and a vehicle with the same.
Background
In the related technology, the gasoline engine adopts a low-pressure cooling EGR technology, so that the fuel economy of the gasoline engine can be improved; but it is limited by EGR tolerance, and large amounts of EGR can cause unstable combustion in gasoline engines and reduce fuel economy.
Disclosure of Invention
In view of the above, the present invention aims to provide engine assemblies to solve the problem that a large amount of EGR gas causes unstable combustion of the engine.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an engine assembly includes an engine having an exhaust passage and an intake passage, the intake passage having an intake manifold and an intake manifold, the exhaust passage having an exhaust manifold and an exhaust manifold, an EGR circuit connected to the exhaust passage and the intake passage, respectively, the EGR circuit having an EGR cooler and an EGR valve disposed thereon, and a hydrogen supply system including a hydrogen supply device connected to the hydrogen rail for outputting hydrogen to the hydrogen rail, and a nozzle connected to the hydrogen rail for injecting hydrogen into the intake manifold.
, the hydrogen gas supply device includes an electrolysis device for electrolyzing water.
, the electrolysis device includes an electrolysis chamber, a power source having a positive electrode and a negative electrode disposed within the electrolysis chamber, and a hydrogen-oxygen separation device disposed within the electrolysis chamber and separating hydrogen and oxygen generated by the electrolysis from each other.
, the hydrogen-oxygen separator includes a separator disposed in the electrolytic chamber and separating the electrolytic chamber into a positive electrode chamber and a negative electrode chamber, the positive electrode is located in the positive electrode chamber and the negative electrode is located in the negative electrode chamber, and the negative electrode chamber is connected to the hydrogen guide rail.
, a high pressure pump is disposed between the negative chamber and the hydrogen rail.
, the anode chamber is connected to the intake manifold.
, the separator is body structure with the electrolytic chamber to form a positive electrode chamber and a negative electrode chamber separated from each other in the electrolytic chamber.
, the engine assembly further includes a turbocharger including a turbine and a compressor, the turbine is disposed on the exhaust manifold and the compressor is disposed on the intake manifold, and the anode chamber is connected to the intake manifold on an upstream side of the compressor.
, the hydrogen guide rail is installed on the intake manifold along the longitudinal direction of the engine, and the nozzles are plural and correspond to the intake manifold, respectively.
Compared with the prior art, the engine assembly has the following advantages:
according to the engine assembly provided by the embodiment of the invention, the EGR gas is supplied to the engine through the EGR loop, so that the combustion temperature of the combustion chamber can be reduced, and the fuel consumption and the emission of the engine are reduced; by providing the hydrogen supply device to supply hydrogen to the engine, the combustion of the mixture gas with the EGR gas can be stabilized, the thermal efficiency of the engine can be improved, and the fuel economy of the engine can be improved.
The invention further aims to provide vehicles.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
A vehicle comprising the engine assembly described above.
Compared with the prior art, the engine has the following advantages:
according to the vehicle provided by the embodiment of the invention, the fuel economy can be improved, so that the energy conservation and emission reduction can be realized.
Drawings
The accompanying drawings, which form a part hereof , are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, an illustrative embodiment of the invention and the description of the invention for purposes of explanation and not limitation, of the invention, wherein:
FIG. 1 is a schematic diagram of a hydrogen supply system for an engine assembly according to an embodiment of the present disclosure;
FIG. 2 is a schematic illustration of an engine assembly according to an embodiment of the present invention;
FIG. 3 is a trend graph of the effect of hydrogen on spark advance and duration of combustion;
FIG. 4 is a trend of hydrogen gas effect on engine EGR gas tolerance;
FIG. 5 is a universal chart of fuel consumption of the engine without hydrogen participation;
FIG. 6 is a universal graph of fuel consumption of an engine with hydrogen gas present.
Description of reference numerals:
an engine assembly 100;
an engine 10;
an exhaust passage 20; an exhaust manifold 21; an exhaust manifold 22;
an intake passage 30; an intake manifold 31; an intake manifold 32;
an EGR circuit 40; the EGR cooler 41; the EGR valve 42;
a hydrogen gas supply system 50; a hydrogen gas supply device 51; a hydrogen gas rail 52; a nozzle 53;
an electrolysis device 60; an electrolysis chamber 61; a power source 62; a positive electrode 63; a negative electrode 64;
an oxyhydrogen separation device 65; a positive electrode chamber 66; a negative electrode chamber 67; a high-pressure pump 68; an oxygen interface 69;
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The engine assembly 100 according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The engine assembly 100 according to the embodiment of the present invention may be applied to a vehicle.
An engine assembly 100 according to an embodiment of the present invention may include: an engine 10, an EGR (exhaust gas recirculation) loop 40 and a hydrogen supply system 50. As shown in fig. 2, engine 10 has exhaust passage 20 and intake passage 30, intake passage 30 has intake manifold 31 and intake manifold 32, and exhaust passage 20 has exhaust manifold 21 and exhaust manifold 22.
As shown in FIG. 2, EGR circuits 40 are each in communication with exhaust gasesLine 20 is connected to intake passage 30 and EGR loop 40 is provided with EGR cooler 41 and EGR valve 42 it will be appreciated that exhaust manifold 21 may be provided with catalyst 92 and exhaust gas exiting through exhaust manifold 22 may be catalyzed by catalyst 92 before being exhausted during the exhaust process is vented directly to atmosphere and may be re-admitted to engine 10 through EGR loop 40 as EGR gas is CO2Water vapor, N2And other unburned products, the EGR gas has a higher specific heat capacity because the triatomic molecule has a higher heat capacity than air, and the supply of the EGR gas into the combustion chamber can reduce the combustion temperature in the combustion chamber of the engine 10, and thus can also reduce the emissions of the engine 10. In this process, the EGR cooler 41 can function to cool the EGR gas, so that the EGR gas has a better temperature reduction function. The EGR valve 42 is used to control the flow rate of EGR gas, that is, the EGR valve 42 controls the flow rate of EGR gas into the combustion chamber of the engine 10. Alternatively, as shown in fig. 2, the EGR gas is mixed with fresh air in the intake manifold 31 to form a mixture.
As shown in fig. 1, the hydrogen gas supply system 50 includes: a hydrogen supply device 51, a hydrogen guide rail 52 and a nozzle 53, wherein the hydrogen supply device 51 is connected with the hydrogen guide rail 52 for outputting hydrogen to the hydrogen guide rail 52, the nozzle 53 is connected with the hydrogen guide rail 52, and the nozzle 53 is used for injecting hydrogen into the intake manifold 32. It is understood that a large amount of EGR gas may cause unstable combustion, but adding hydrogen gas to the mixture may widen the ignition limit of the mixture, accelerate flame propagation, improve combustion efficiency, and enhance combustion stability.
The hydrogen gas provided by the hydrogen supply system 50 is mixed with the mixture gas at the intake manifold 32, the uniformly mixed mixture gas can be stably combusted in the combustion chamber, the EGR gas in the mixture gas can reduce the combustion temperature of the combustion chamber, the emission of the engine 10 can be reduced, and the hydrogen gas can make the mixture gas stably combusted, so that the thermal efficiency of the engine assembly 100 can be improved, and the fuel consumption and the emission of the engine assembly 100 can be reduced.
Specifically, hydrogen guide rail 52 is mounted on intake manifold 32 in the longitudinal direction of engine 10, and a plurality of nozzles 53 are provided corresponding to intake manifolds 32, respectively, as shown in FIG. 2, a plurality of nozzles 53 correspond to a plurality of intake manifolds 32 , and a plurality of nozzles 53 accurately discharge hydrogen gas into each combustion chamber in accordance with the operation of engine 10.
It is understood that the amount of hydrogen gas participating in the reaction in the combustion chamber is only 1% of the total intake air amount at the maximum, as shown in fig. 3, when the total intake air amount is gradually increased from 0 to 1%, the ignition advance and the combustion duration of the engine 10 are gradually decreased, which indicates that after the hydrogen gas participates in the combustion, the hydrogen gas can widen the ignition limit of the mixture, accelerate flame propagation, improve the combustion rate, and enhance the combustion stability, and as shown in fig. 4, under the same condition, as the proportion of the hydrogen gas in the total intake air amount is gradually increased from 0 to 1%, the engine 10 keeps stable combustion, and the acceptable EGR gas is gradually increased.
Referring to fig. 5 and 6, after the engine 10 is applied with the EGR loop 40, under the medium-speed and medium-load conditions, the EGR loop 40 can enable the optimal combustion phase of the engine 10 to perform combustion, so as to reduce fuel consumption; under low load conditions, the EGR loop 40 improves fuel consumption of the engine 10 by reducing pumping losses; and under the high-speed high-load working condition, the redundant fuel consumption for reducing the exhaust temperature is reduced by reducing the exhaust temperature. And under the low-speed high-load working condition, knocking is inhibited, the ignition phase is optimized, and the fuel consumption is improved. H2After the combustion, the EGR gas tolerance of the engine 10 is improved, and the effect of the low-pressure EGR gas is greatly improved. As can be seen from fig. 6, the contour of the minimum fuel consumption range of the engine 10 is enlarged, and the other corresponding contours are enlarged, so that the overall fuel consumption of the engine 10 is improved.
According to the engine assembly 100 of the embodiment of the invention, the combustion temperature of the combustion chamber can be reduced by supplying the EGR gas to the engine 10 through the EGR loop 40 so as to reduce the fuel consumption and the emission of the engine 10, and the mixed gas with the EGR gas can be stably combusted by supplying the hydrogen gas to the engine 10 through the hydrogen supply device 51, so that the heat efficiency of the engine 10 is improved, and the fuel economy of the engine 10 is improved.
In examples of the present invention, as shown in FIG. 1, the hydrogen supply device 51 includes an electrolysis device 60 for electrolyzing water, the electrolysis device 60 includes an electrolysis chamber 61, a power source 62, and a hydrogen-oxygen separation device 65, the power source 62 has a positive electrode 63 and a negative electrode 64, the positive electrode 63 and the negative electrode 64 are disposed in the electrolysis chamber 61, the hydrogen-oxygen separation device 65 is disposed in the electrolysis chamber 61, and the hydrogen-oxygen separation device 65 is used to separate hydrogen and oxygen generated by electrolysis from each other, that is, hydrogen is obtained by electrolyzing water by the electrolysis device 60, as shown in FIG. 1, the positive electrode 63 and the negative electrode 64 of the power source 62 are respectively disposed in the electrolysis chamber 61, oxygen generated by electrolyzing water is obtained at the positive electrode 63, hydrogen generated by electrolyzing water is obtained at the negative electrode 64, the oxygen and hydrogen generated by electrolyzing water is separated from hydrogen by the hydrogen-oxygen separation device 65, optionally, a high-pressure pump 68 may be disposed between the negative electrode 67 and the hydrogen rail 52. the high-pressure pump.
It can be understood that the amount of hydrogen participating in the reaction in the combustion chamber is only 1% of the total amount of the intake air at most, so that the engine 10 and the battery can completely meet the electric energy of the water electrolysis reaction, and further the energy of the engine 10 can be fully utilized, and the energy utilization rate of the engine 10 is improved.
Alternatively, as shown in FIG. 1, the hydrogen-oxygen separation device 65 includes a separator that is disposed in the electrolytic chamber 61 and that separates the electrolytic chamber 61 into a positive electrode chamber 66 and a negative electrode chamber 67, the positive electrode 63 being located in the positive electrode chamber 66 and the negative electrode 64 being located in the negative electrode chamber 67, the negative electrode chamber 67 being connected to the hydrogen guide 52. That is, oxygen generated by electrolyzing water may be stored in the positive electrode chamber 66, hydrogen generated by electrolyzing water may be stored in the negative electrode chamber 67, and the separator may be provided to prevent the hydrogen and oxygen from being mixed.
Further , as shown in fig. 2, the anode chamber 66 is connected to the intake manifold 31, the intake manifold 31 is provided with an oxygen port 69, oxygen in the anode chamber 66 can enter the intake manifold 31 through the oxygen port 69 and can enter the engine 10, so that fuel efficiency of the engine 10 can be improved, the engine assembly 100 can further comprise a turbocharger including a turbine 71 and a compressor 72, the turbine 71 is arranged on the exhaust manifold 21, the compressor 72 is arranged on the intake manifold 31, and the anode chamber 66 is connected to the intake manifold 31 on the upstream side of the compressor 72. in connection with fig. 1 and 2, the engine assembly 100 can further comprise an air filter 80, fresh air passing through the air filter 80 enters the intake manifold 31, the fresh air, EGR gas and oxygen are combined before the compressor 72 and then fully mixed by the compressor 72, as shown in fig. 2, the intake manifold 31 is further provided with an intercooler 90 and a throttle 6391, 90 can play a role in cooling the mixture, and the throttle can control the amount of the air entering the cylinder and finally mixed air to enter the combustion chamber.
According to another aspect of the invention, the vehicle comprises the engine assembly 100 of the embodiment, the vehicle with the engine assembly 100 of the embodiment can improve fuel economy, and therefore energy conservation and emission reduction can be achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
- An engine assembly (100) of the type , comprising:an engine (10), the engine (10) having an exhaust passage (20) and an intake passage (30), the intake passage (30) having an intake manifold (31) and an intake manifold (32), the exhaust passage (20) having an exhaust manifold (21) and an exhaust manifold (22);an EGR circuit (40), wherein the EGR circuit (40) is respectively connected with the exhaust passage (20) and the intake passage (30), and an EGR cooler (41) and an EGR valve (42) are arranged on the EGR circuit (40); anda hydrogen gas supply system (50), the hydrogen gas supply system (50) comprising: a hydrogen supply device (51), a hydrogen guide rail (52) and a nozzle (53), wherein the hydrogen supply device (51) is connected with the hydrogen guide rail (52) and used for outputting hydrogen to the hydrogen guide rail (52), the nozzle (53) is connected with the hydrogen guide rail (52) and used for injecting hydrogen into the air inlet manifold (32), the hydrogen guide rail (52) is installed on the air inlet manifold (32) along the longitudinal direction of the engine (10), and the nozzles (53) are multiple and respectively correspond to the air inlet manifold (32);the hydrogen gas supply device (51) includes: an electrolysis device (60) for electrolyzing water;the electrolysis device (60) comprises: an electrolysis chamber (61), a power source (62) and a hydrogen-oxygen separation device (65), the power source (62) having a positive electrode (63) and a negative electrode (64), the positive electrode (63) and the negative electrode (64) being disposed within the electrolysis chamber (61), the hydrogen-oxygen separation device (65) being disposed within the electrolysis chamber (61) and being for separating hydrogen and oxygen generated by electrolysis from each other;the hydrogen-oxygen separation device (65) comprises a separator which is arranged in the electrolytic chamber (61) and separates the electrolytic chamber (61) into a positive electrode chamber (66) and a negative electrode chamber (67), the positive electrode (63) is positioned in the positive electrode chamber (66) and the negative electrode (64) is positioned in the negative electrode chamber (67), and the negative electrode chamber (67) is connected with the hydrogen guide rail (52);a high-pressure pump (68) is arranged between the negative electrode chamber (67) and the hydrogen guide rail (52);the separator is in body structure with the electrolytic chamber (61) so that a positive electrode chamber (66) and a negative electrode chamber (67) which are separated from each other are formed in the electrolytic chamber (61);the positive electrode chamber (66) is connected with the air inlet manifold (31);the turbocharger comprises a turbine (71) and a compressor (72), the turbine (71) is arranged on the exhaust manifold (21), the compressor (72) is arranged on the air inlet manifold (31), and the anode chamber (66) is connected with the air inlet manifold (31) on the upstream side of the compressor (72).
- A vehicle , characterized by comprising the engine assembly (100) of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510139789.3A CN106150774B (en) | 2015-03-27 | 2015-03-27 | Engine assembly and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510139789.3A CN106150774B (en) | 2015-03-27 | 2015-03-27 | Engine assembly and vehicle with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106150774A CN106150774A (en) | 2016-11-23 |
| CN106150774B true CN106150774B (en) | 2020-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510139789.3A Active CN106150774B (en) | 2015-03-27 | 2015-03-27 | Engine assembly and vehicle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106150774B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388308A (en) * | 2002-04-09 | 2003-01-01 | 姜伟 | Power generating and hydrogen producing method and unit utilizing waste gas of internal combustion engine |
| CN103184941A (en) * | 2013-04-15 | 2013-07-03 | 清华大学 | Natural gas engine and combustion method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6779337B2 (en) * | 2002-09-20 | 2004-08-24 | Ford Global Technologies, Llc | Hydrogen fueled spark ignition engine |
| GB2400611B (en) * | 2003-04-15 | 2006-03-15 | Empower Corp H | An integrated renewable energy system |
| CN1800617A (en) * | 2006-01-13 | 2006-07-12 | 镇江江奎科技有限公司 | Apparatus and method for controlling internal combustion engine with hydrogen fuel |
-
2015
- 2015-03-27 CN CN201510139789.3A patent/CN106150774B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388308A (en) * | 2002-04-09 | 2003-01-01 | 姜伟 | Power generating and hydrogen producing method and unit utilizing waste gas of internal combustion engine |
| CN103184941A (en) * | 2013-04-15 | 2013-07-03 | 清华大学 | Natural gas engine and combustion method thereof |
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| Publication number | Publication date |
|---|---|
| CN106150774A (en) | 2016-11-23 |
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