CN109356750A - A method of the fuel cell coupling engine water spray for passenger car - Google Patents
A method of the fuel cell coupling engine water spray for passenger car Download PDFInfo
- Publication number
- CN109356750A CN109356750A CN201811336368.XA CN201811336368A CN109356750A CN 109356750 A CN109356750 A CN 109356750A CN 201811336368 A CN201811336368 A CN 201811336368A CN 109356750 A CN109356750 A CN 109356750A
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- CN
- China
- Prior art keywords
- water
- sprayed
- engine
- spray
- ecu
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- 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
-
- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/025—Adding water
- F02M25/028—Adding water into the charge intakes
-
- 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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
Abstract
The invention discloses a kind of method of fuel cell coupling engine water spray for passenger car, the water that fuel cell generates is sprayed water for air intake duct.It avoids fuel cell and generates a large amount of water wastes.And do not have to consider the purification to the water sprayed into cylinder.Ignition temperature is reduced by water spray, engine anti-knock properties is improved, keeps hybrid power system more efficient.
Description
Technical field
The present invention relates to the methods of the fuel cell of field of automotive power more particularly to passenger car coupling engine water spray.
Background technique
The development of modern society is increasingly dependent on the energy, transportation major part power be all by conventional gasoline machine and
Diesel engine.As environmental protection consciousness is more and more stronger, engine exhaust regulation is also increasingly stringenter.With vehicle energy saving and new energy
The development of source technology, fuel consumption and emission have become the mainstream of development of automobile.Hybrid vehicle becomes currently
One important directions of automobile industry.Hybrid vehicle (HEV) refers to while equipping the automobile of heat dynamic resource and electrodynamic source.
Engine and motor are used in combination, and engine acting a part is for generating electricity, and a part is for driving wheel, according to practical regulation
Engine is maintained in the optimal region of comprehensive performance to work.And motor energy quick start engine, improve starting discharge；
It is recovered energy, is achieved energy-saving and emission reduction purposes using motor when braking.
Fuel cell is the power of a kind of high efficiency, low emission low noise.Lot of domestic and international Automobile Enterprises develop fuel
Battery and engine can be collectively as the power of hybrid vehicle.Using fuel cell as power, fossil can be reduced
The consumption of fuel is to reduce carbon emission.Compared to engine, the thermal efficiency of fuel cell is higher, and without noxious emission, symbol
Close the requirement of energy-saving and emission-reduction.
Start engine water spray research early in the 1930s.Early stage applies the research in aero-engine, later
It uses on vehicular engine.It is sprayed water to the research discovery of diesel engine water spray by air intake duct, theory is evaporated according to multi-component fuel,
The evaporation of water inhibits fuel evaporation to lead to ignition lag, and water is more, and delay is longer.Water appropriate is sprayed under higher load, is dropped
Low ignition temperature, and hydrone and oxygen atom reaction generate hydroxyl and reduce oxygen concentration, significantly reduce NOxDischarge, while CO
It discharges with HC without apparent increase.And water spray is reducing NO under Smaller loadxCause CO and HC to discharge while discharge to increase.Bavin
For the different rotating speeds and load of oily air intake duct water spray studies have shown that water spray is affected to slow-speed of revolution oil consumption, maximum can reduce by 10%
Fuel consumption rate, reduce NOxDischarge 10%~30%.For small load condition, NO is reduced using EGRxMore have than water spray excellent
Gesture；And high load working condition is then sprayed water reduces NOxMore preferably.There is test result to show that small diesel engine air flue water is with oily ratio
0.15 to 0.45 is best.Mitsubishi Heavy Industries Ltd are directly sprayed water by layered fuel, water injection system into cylinder of diesel engine, can be dropped simultaneously
Low NOxAnd particulate emission.Available engine water spraying structure mainly uses in-cylinder water injection, and spraying water excessively can dilute lubricating oil.And
And the water in water tank needs multiple checks and adds at any time.Water tank long-time storage water leads to water pollution, to water pump and water jet,
In-cylinder combustion can all adversely affect.
Summary of the invention
The purpose of the present invention is to provide a kind of method of fuel cell coupling engine water spray for passenger car, fuel
Battery provides water for engine and sprays into air flue, and optimization burning reduces oil consumption, reduces the discharge of pollutant, reduces temperature and heat transfer mentions
High thermal efficiency.
A method of the fuel cell coupling engine water spray for passenger car, comprising the following steps:
Step 1: ECU judges the operating status of engine according to the torque and revolving speed of engine；
Step 2: taking corresponding water spray strategy for different operating statuses；
If it is Smaller load, ECU control water jet and water pump are in close state, without water spray；
If it is moderate duty, then air intake duct is carried out using water jet and directly sprayed water, detailed process are as follows: ECU is according to crankshaft
Angular signal determines that engine piston position, control water jet are sprayed water at the IC Intake Valve Closes moment, and ECU is according to the spray demarcated in advance
Water and water spray moment issue water spray to water jet and instruct, while ECU sends enabled instruction to water pump, and the water in water tank passes through water
Pump is delivered to water jet and is sprayed,
If it is big load, then directly spray water in air intake duct using water jet, detailed process are as follows:
ECU determines engine piston position according to corner signal, when being injected in IO Intake Valve Opens in control air intake duct
It carves and carries out, ECU controls water pump starting, while issuing water spray to water jet according to the amount of water sprayed and water spray moment demarcated in advance and referring to
It enables, the water in water tank is delivered to water jet by water pump and is sprayed.
The beneficial effects of the present invention are:
The water generated using fuel cell, centre needs not move through the measures such as any purifying sterilizing, is directly used in engine
Water spray.The water of fuel cell reaction generation had both been utilized in method, and in turn avoiding engine using other water are contaminated leads to mineral
It is deposited on water filter, water ejector, engine part, exhaust catalyst etc., to influence engine performance and potential
Ground damages engine hardware.The water that fuel cell generates can use at any time, not have to consider the problems of storage pollution.And it uses
Water spray solves the problems, such as the processing of fuel cell product water.Both fuel cell and engine water spray coupling, efficiently solve
The problem of.
Detailed description of the invention
Fig. 1 is the schematic device that the fuel cell for passenger car of the invention couples engine water spray；
Fig. 2 is engine water spray control flow chart.
Specific embodiment
The contents of the present invention will be described in detail in the following with reference to the drawings and specific embodiments.
As shown in the picture, the device that the method for the present invention uses is the improvement to existing structure.Engine partial schematic diagram, packet
Cylinder is included, crankshaft 4 and connecting rod 3 connect, and the connecting rod other end connects piston 5, air intake duct 7 and exhaust duct 1 and cylinder body phase on cylinder cap
Even, inlet valve 6, exhaust valve 2 and piston 5 form corresponding combustion chamber.
The method of a kind of fuel cell coupling engine water spray for passenger car of the invention as shown in the figure, including it is following
Step:
Step 1: ECU 9 judges the operating status of engine according to the torque and revolving speed of engine；
Step 2: taking corresponding water spray strategy for different operating statuses；
If it is Smaller load, ECU 9 controls water jet and water pump 12 is in close state, without water spray.
If it is moderate duty, then air intake duct is carried out using water jet 8 and directly sprayed water, detailed process are as follows: ECU 9 is according to song
Shaft angle signal determines that engine piston position, control water jet are sprayed water at the IC Intake Valve Closes moment.ECU 9 is according to preparatory calibration
Amount of water sprayed and water spray the moment to water jet 8 issue water spray instruction, while ECU 9 to water pump 12 send enabled instruction.In water tank
Water water jet 8 be delivered to by water pump sprayed.Utilize the high temperature rapid evaporation of valve.Water evaporation heat absorption reduces air inlet
Temperature reduces pumping loss.
Amount of water sprayed and water spraying time are obtained by experiment, and ECU is according to revolving speed, load, charge flow rate, piston position, air inlet
The prior nominal data of temperature is to determine the water sprayed into and moment and according to NOxDischarge amount amount of water sprayed and water spraying time are carried out
Amendment makes discharge and efficiency optimization.
If it is big load, then directly spray water in air intake duct using water jet 8, detailed process are as follows:
ECU 9 determines engine piston position according to corner signal, controls in air intake duct and is injected in IO Intake Valve Opens
Moment carries out, and ECU 9 controls water pump 12 and starts, while being issued and being sprayed to water jet according to the amount of water sprayed and water spray moment demarcated in advance
Water instruction.Water in water tank is delivered to water jet by water pump and is sprayed.The water of penetrating evaporation endothermic in the combustion chamber reduces
The thermic load of high load working condition reduces the pinking tendency of engine.Amount of water sprayed and water spraying time are obtained by experiment, ECU according to
The prior nominal data of revolving speed, load, charge flow rate, piston position, intake air temperature is to determine the water sprayed into and moment and basis
NOxDischarge amount amount of water sprayed and water spraying time are modified, make discharge and the thermal efficiency it is optimal.
The device of method to realize the present invention as shown in Figure 1, including water tank 13 and water jet 8, the spray of the water jet 8
Mouth is connected to so as to enter air intake duct, the spout axis of the water jet 8 and air inlet by the water that water jet sprays with air intake duct
The axis in road is in 0 degree to 45 degree of angle, does not hinder air inlet to flow in this way, and drop point site of spraying water is close to valve, the higher spray of temperature
Water out is easy evaporation.
One water pump 12 is installed in the water tank 13, the outlet of the water pump 12 is by being equipped with pressure maintaining valve 10
It is connected to the water supply line of drain valve 11.
One end of one fuel cell unit 16 is described by being equipped with the inlet communications of the water pipe and water tank 13 of check valve 15
The other end of fuel cell unit 16 be connected respectively with Hydrogen Line 18, oxygen channel 17.In fuel cell unit, hydrogen and oxygen
Chemical energy in gas is converted into electric energy while product water is discharged.16 one end of fuel cell unit and Hydrogen Line 18, oxygen hose
Road 17 is connected, and water flows to water tank 13 from water pipe 14, for storing the water not sprayed into temporarily in cylinder.Check valve is connected in water pipe 14
15, it flows water (flow) direction towards arrow direction, prevents aqueous reflux from entering fuel cell, influence hydrogen-oxygen fuel cell power generation.
The water jet 8, water pump 12 pass through control line and ECU (Electronic Control Unit electronics control respectively
Unit processed) 9 it is connected, pass through the control water spray moment and amount of water sprayed of ECU 9.It draws water from water tank 13 and sprays water for water jet 8, wherein
Pressure maintaining valve 11 guarantees that stable water pressure, drain valve 12 then allow extra water flow to return in water tank.
Engine and fuel cell provide power simultaneously for automobile.Fuel cell unit 16 is passed through hydrogen and oxygen, generation
Water is discharged in water tank 13 and stores, and sprays water and uses for engine.Different spray modes, ECU control are chosen under different operating conditions
The water spraying time and amount of water sprayed of water jet.
Claims (1)
1. a kind of method of the fuel cell coupling engine water spray for passenger car, it is characterised in that the following steps are included:
Step 1: ECU judges the operating status of engine according to the torque and revolving speed of engine；
Step 2: taking corresponding water spray strategy for different operating statuses；
If it is Smaller load, ECU control water jet and water pump are in close state, without water spray；
If it is moderate duty, then air intake duct is carried out using water jet and directly sprayed water, detailed process are as follows: ECU is according to crank angle
Signal determines that engine piston position, control water jet are sprayed water at the IC Intake Valve Closes moment, and ECU is according to the amount of water sprayed demarcated in advance
Water spray instruction is issued to water jet with the water spray moment, while ECU sends enabled instruction to water pump, the water in water tank is defeated by water pump
It send to water jet and is sprayed,
If it is big load, then directly spray water in air intake duct using water jet, detailed process are as follows:
ECU determines engine piston position according to corner signal, control be injected in air intake duct the IO Intake Valve Opens moment into
Row, ECU controls water pump starting, while issuing water spray instruction, water to water jet according to the amount of water sprayed and water spray moment demarcated in advance
Water in case is delivered to water jet by water pump and is sprayed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336368.XA CN109356750A (en) | 2018-11-10 | 2018-11-10 | A method of the fuel cell coupling engine water spray for passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336368.XA CN109356750A (en) | 2018-11-10 | 2018-11-10 | A method of the fuel cell coupling engine water spray for passenger car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109356750A true CN109356750A (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811336368.XA Pending CN109356750A (en) | 2018-11-10 | 2018-11-10 | A method of the fuel cell coupling engine water spray for passenger car |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217181A (en) * | 2020-01-21 | 2021-08-06 | 长城汽车股份有限公司 | Water spray control method and device for engine body and vehicle |
Citations (6)
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|---|---|---|---|---|
| DE10356806A1 (en) * | 2003-12-05 | 2005-07-07 | Audi Ag | Vehicle with combustion engine whereby water from fuel cells is fed into the combustion chamber of the engine |
| CN106762237A (en) * | 2016-12-16 | 2017-05-31 | 浙江吉利控股集团有限公司 | A kind of engine |
| CN107035530A (en) * | 2016-01-26 | 2017-08-11 | 通用电气公司 | Mixed propulsion system |
| CN207513705U (en) * | 2017-12-01 | 2018-06-19 | 南通航运职业技术学院 | A kind of EGR integrates emission-reducing device with water vapour |
| CN108204310A (en) * | 2016-12-19 | 2018-06-26 | 福特环球技术公司 | For adjusting the method and system of engine water injection |
| CN108204274A (en) * | 2016-12-19 | 2018-06-26 | 福特环球技术公司 | For adjusting the method and system of engine water injection |
-
2018
- 2018-11-10 CN CN201811336368.XA patent/CN109356750A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10356806A1 (en) * | 2003-12-05 | 2005-07-07 | Audi Ag | Vehicle with combustion engine whereby water from fuel cells is fed into the combustion chamber of the engine |
| CN107035530A (en) * | 2016-01-26 | 2017-08-11 | 通用电气公司 | Mixed propulsion system |
| CN106762237A (en) * | 2016-12-16 | 2017-05-31 | 浙江吉利控股集团有限公司 | A kind of engine |
| CN108204310A (en) * | 2016-12-19 | 2018-06-26 | 福特环球技术公司 | For adjusting the method and system of engine water injection |
| CN108204274A (en) * | 2016-12-19 | 2018-06-26 | 福特环球技术公司 | For adjusting the method and system of engine water injection |
| CN207513705U (en) * | 2017-12-01 | 2018-06-19 | 南通航运职业技术学院 | A kind of EGR integrates emission-reducing device with water vapour |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217181A (en) * | 2020-01-21 | 2021-08-06 | 长城汽车股份有限公司 | Water spray control method and device for engine body and vehicle |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190219 |
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| RJ01 | Rejection of invention patent application after publication |