CN108060991A - The gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder - Google Patents
The gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder Download PDFInfo
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- CN108060991A CN108060991A CN201711144152.9A CN201711144152A CN108060991A CN 108060991 A CN108060991 A CN 108060991A CN 201711144152 A CN201711144152 A CN 201711144152A CN 108060991 A CN108060991 A CN 108060991A
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- cylinder
- water
- gasoline engine
- pressure
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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
- 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
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/12—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with non-fuel substances or with anti-knock agents, e.g. with anti-knock fuel
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- 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
- F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
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- 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
- F02M25/0227—Control aspects; Arrangement of sensors; Diagnostics; Actuators
-
- 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
- F02M25/03—Adding water into the cylinder or the pre-combustion chamber
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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)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention relates to a kind of gasoline engine structures of the double injections of cold water mix inside and outside cylinder, including Gasoline Engine Body, the inlet manifold being arranged on Gasoline Engine Body and exhaust manifold, fuel injector, the spark plug being arranged in Gasoline Engine Body, the in-cylinder water injection device being arranged in Gasoline Engine Body, the high-pressure hydraulic pump unit being connected with in-cylinder water injection device, water jet outside the cylinder in inlet manifold, the low-pressure pump unit, the electronic controller that are connected with water jet outside cylinder are arranged on.Compared with prior art, the present invention utilizes the cold water sprayed into cylinder to absorb heat, reduces the temperature in cylinder near combustion top dead center, inhibits pinking tendency, while as additional working medium, improves the thermal efficiency of gasoline engine, improve fuel consumption and emission characteristic；It sprays water in inlet manifold, with the evaporation endothermic of water, is lowered into the gas temperature of cylinder, increases density of the induced air, increase coefficient of charge, thus improve gasoline engine power per liter, improve dynamic property.
Description
Technical field
The invention belongs to technical field of internal combustion engines, are related to a kind of double gasoline engine structures sprayed of cold water mix inside and outside cylinder.
Background technology
The fast development of automotive engineering brings huge facility to human society, while also brings the energy, environment
The series of negative such as pollution influence.The problems of energy consumption of motor vehicle receives significant attention, and oil consumption is also more tight with discharge standard
Lattice.Therefore, energy-saving and emission-reduction also become the main melody of motor vehicle industry development.
In order to further improve motor vehicle work efficiency, reduce energy consumption, be currently suggested supercharging of internal combustion engine with it is small-sized
Change technology.Internal combustion engine miniaturization technology can often use the load of operating mode with increasing combustion engine, reduce pumping loss, improve fuel-economy
Property.And supercharging technology can make up the shortcomings that dynamic property caused by being minimized due to internal combustion engine is insufficient.But it is higher due to compressing,
Compression top center temperature is very high, and the thermal efficiency of small displacement supercharging gasoline engine is limited be subject to pinking.In order to make full use of small displacement
The potentiality of supercharging gasoline engine, water-jet technology come into being.The characteristics of water-jet technology, is to absorb heat using the cold water sprayed into cylinder
Amount so as to reduce temperature, inhibits pinking tendency, can further improve the gasoline engine including such as compression ratio, ignition advance angle
Parameter improves the thermal efficiency.In-cylinder water injection technology has obtained the extensive concern of academia and industrial quarters, such as German BMW collection
Duo Jia research institutions including group, group of German Bosch, Hyundai automobile group and Toyota Motor group all start pair
In-cylinder water injection technology optimizes research.But previous technical research is confined to, only in in-cylinder water injection, limit gasoline engine
The thermal efficiency, power per liter further improve.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind both improves gasoline engine
The thermal efficiency, power per liter, and the double gasoline engine structures sprayed of cold water mix effectively inside and outside the cylinder of inhibition pinking.
The purpose of the present invention can be achieved through the following technical solutions：
The gasoline engine structure of the double injections of cold water mix, the structure include Gasoline Engine Body, are arranged on gasoline inside and outside a kind of cylinder
Inlet manifold and exhaust manifold, fuel injector, the spark plug being arranged in Gasoline Engine Body on machine body are arranged on gasoline engine machine
In vivo in-cylinder water injection device, the high-pressure hydraulic pump unit being connected with in-cylinder water injection device are arranged on the cylinder in inlet manifold Wai and spray water
Device, the low-pressure pump unit being connected with the outer water jet of cylinder, respectively with fuel injector, spark plug, in-cylinder water injection device, high-pressure hydraulic pump list
The outer water jet of member, cylinder and the electronic controller of low-pressure pump unit electrical connection.
The low-pressure pump unit includes water tank, the low-pressure pump being arranged in water tank, is connected with low-pressure pump
Low pressure water rail, the low pressure water pipe that low pressure water rail is connected with water jet outside cylinder.
Hydraulic pressure is added to 0.3-1MPa and is delivered to low pressure water rail again by the low-pressure pump.
The high-pressure hydraulic pump unit includes the high-pressure hydraulic pump being connected with low-pressure pump, the height being connected with high-pressure hydraulic pump
Press water rail, the high-pressure water pipe that high pressure water rail is connected with in-cylinder water injection device.
Water is forced into after 35MPa and is delivered to high pressure water rail again by the high-pressure hydraulic pump.
The fuel injector includes the in-cylinder injector being arranged in Gasoline Engine Body or the cylinder being arranged in inlet manifold
One or both of outer fuel injector.
The bent axle of the gasoline engine is equipped with the speed probe being electrically connected with electronic controller.
In the operating condition, the speed probe can monitor the rotating speed of gasoline engine in real time, and feed data back to
In electronic controller.
The tank gage being electrically connected with electronic controller is equipped in the water tank.
In the operating condition, the tank gage monitors the liquid level in water tank in real time, judges surplus water, and immediate feedback
It to electronic controller, when the liquid level in water tank is less than preset value, will alarm, water required supplementation with prompting, is avoided the occurrence of
The insufficient situation of water storage.
With being equipped with pressure maintaining valve on low pressure water rail, pressure maintaining valve can control hydraulic pressure the high pressure water rail, make water
Pressure ensures job stability in suitable scope.
The pressure maintaining valve is equipped with overflow pipe, which is equipped with overflow valve, inside the overflow pipe and water tank
It is connected.After setting a constant pressure to pressure maintaining valve, the hydraulic pressure of output just will not change, if hydraulic pressure is excessively high in pressure maintaining valve,
Overflow valve is opened, and extra water is just flow back into through overflow pipe in water tank, can either play the role of fast and stable hydraulic pressure, simultaneously also
It is avoided that the waste of water.
The electronic controller is according to calibration MAP chart (igniting, oil spout, spray of the engine under various operating modes of storage
The controlling curves figure such as water is known as MAP chart) water spray in master cylinder, outside cylinder, it is internally provided with in-cylinder water injection amount-speed diagram, outside cylinder
Water spray-speed diagram, in-cylinder water injection amount-torque diagram, water spray-speed diagram inside and outside cylinder.Specific control strategy and signal touch
The principle of hair is similar to the Injection Control principle of gasoline engine.
In practical application, a part of water is delivered in low pressure water rail by the low-pressure pump in water tank, and it is stored in low pressure
In water rail, water is delivered to water jet outside cylinder by low pressure water rail by low pressure water pipe；Another part water is delivered to high-pressure hydraulic pump, then
Water pressurized delivered into high pressure water rail, and is stored in high pressure water rail by high-pressure hydraulic pump, and high pressure water rail is by high-pressure water pipe by water
In-cylinder water injection device is delivered to, electronic controller is controlled according to the calibration MAP chart of storage in penetrating Engine body and inlet manifold
Interior water spray.
Compared with prior art, the invention has the characteristics that：
1) heat is absorbed using the cold water sprayed into cylinder, so as to reduce the temperature near combustion top dead center in cylinder, inhibited quick-fried
Shake tendency, while as additional working medium, significantly improve the thermal efficiency of gasoline engine, improve fuel consumption and emission characteristic；
2) spray water in inlet manifold, with the evaporation endothermic of water, be lowered into the gas temperature of cylinder, increase density of the induced air,
Increase coefficient of charge, thus significantly improve gasoline engine power per liter, improve dynamic property；
3) monitoring in real time and control carry out gasoline engine by electronic controller, to adjust water spray moment and water spray, and
Water spray is made to be adapted with the specific operating mode of gasoline engine, and then improves the thermal efficiency of gasoline engine, power per liter, there is application well
Prospect.
Description of the drawings
Fig. 1 is the overall structure diagram of the gasoline engine structure of the double injections of cold water mix inside and outside cylinder of the present invention；
Description of symbols in figure：
1-water tank, 2-low-pressure pump, 3-Gasoline Engine Body, 4-low pressure water rail, 5-high-pressure hydraulic pump, 6-high pressure water
The outer fuel injector of the outer water jet of rail, 7-electronic controller, 8-cylinder, 9-cylinder, 10-inlet manifold, 11-in-cylinder water injection device, 12-
Spark plug, 13-in-cylinder injector, 14-exhaust manifold.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in Figure 1, the double gasoline engine structures sprayed of cold water mix inside and outside a kind of cylinder, including Gasoline Engine Body 3, are arranged on
Inlet manifold 10 and exhaust manifold 14, fuel injector, the spark plug 12 being arranged in Gasoline Engine Body 3 on Gasoline Engine Body 3 are set
It puts the in-cylinder water injection device 11 in Gasoline Engine Body 3, the high-pressure hydraulic pump unit being connected with in-cylinder water injection device 11, be arranged on air inlet
The outer water jet 8 of cylinder in manifold 10, with the cylinder low-pressure pump unit that water jet 8 is connected outside, respectively with fuel injector, spark plug
12nd, the outer water jet 8 of in-cylinder water injection device 11, high-pressure hydraulic pump unit, cylinder and the electronic controller 7 of low-pressure pump unit electrical connection.Vapour
The bent axle of oil machine is equipped with the speed probe being electrically connected with electronic controller 7.In the operating condition, speed probe can be real
When monitor the rotating speed of gasoline engine, and feed data back in electronic controller 7.It is equipped in water tank 1 and is electrically connected with electronic controller 7
Tank gage.In the operating condition, tank gage monitors the liquid level in water tank 1 in real time, judges surplus water, and immediate feedback is to electricity
Sub-controller 7, when the liquid level in water tank 1 is less than preset value, will alarm, and requires supplementation with water with prompting, avoids the occurrence of storage
Hydropenic situation.
Wherein, low-pressure pump unit includes water tank 1, the low-pressure pump 2 being arranged in water tank 1, is connected with low-pressure pump 2
Low pressure water rail 4, low pressure water pipe that low pressure water rail 4 is connected with water jet outside cylinder 8.Hydraulic pressure is added to 0.3- by low-pressure pump 2
1MPa is delivered to low pressure water rail 4 again.
High-pressure hydraulic pump unit includes the high-pressure hydraulic pump 5 being connected with low-pressure pump 2, the high pressure being connected with high-pressure hydraulic pump 5
Water rail 6, the high-pressure water pipe that high pressure water rail 6 is connected with in-cylinder water injection device 11.Water is forced into after 35MPa again by high-pressure hydraulic pump 5
It is delivered to high pressure water rail 6.
In actual design process, for high pressure water rail 6 with being equipped with pressure maintaining valve on low pressure water rail 4, pressure maintaining valve can be to hydraulic pressure
It is controlled, hydraulic pressure is made to be in suitable scope, ensure job stability.Pressure maintaining valve is equipped with overflow pipe, on the overflow pipe
Equipped with overflow valve, overflow pipe inside water tank 1 with being connected.After setting a constant pressure to pressure maintaining valve, the hydraulic pressure of output is just
It will not change, if hydraulic pressure is excessively high in pressure maintaining valve, overflow valve is opened, and extra water is just flow back into through overflow pipe in water tank 1, can either
Play the role of fast and stable hydraulic pressure, while be also avoided that the waste of water.
In the present embodiment, fuel injector includes the in-cylinder injector 13 being arranged in Gasoline Engine Body 3 and is arranged on air inlet
The outer fuel injector 9 of cylinder on manifold 10.In calibration MAP chart master cylinder of the electronic controller 7 according to storage, the water spray outside cylinder, it is interior
Portion is equipped with water spray-rotating speed inside and outside in-cylinder water injection amount-speed diagram, the outer water spray-speed diagram of cylinder, in-cylinder water injection amount-torque diagram, cylinder
Figure.Specific control strategy and the principle of signal triggering are identical with the Injection Control principle of gasoline engine.
In practical application, a part of water is delivered in low pressure water rail 4 by the low-pressure pump 2 in water tank 1, and it is stored in low
It presses in water rail 4, water is delivered to water jet 8 outside cylinder by low pressure water rail 4 by low pressure water pipe；Another part water is delivered to high-pressure hydraulic pump
5, water pressurized delivered into high pressure water rail 6, and is stored in high pressure water rail 6 by subsequent high-pressure hydraulic pump 5, and high pressure water rail 6 passes through height
Water is delivered to in-cylinder water injection device 11 by pressure pipe, and electronic controller 7 controls according to the calibration MAP chart of storage and sprays into cylinder of petrol engine
Water spray in interior and inlet manifold 10.
Embodiment 2：
In the present embodiment, fuel injector is the in-cylinder injector 13 being arranged in Gasoline Engine Body 3.
Remaining is the same as embodiment 1.
Embodiment 3：
In the present embodiment, fuel injector is fuel injector 9 outside the cylinder put in inlet manifold 10.
Remaining is the same as embodiment 1.
The above-mentioned description to embodiment is for ease of ordinary skill in the art to understand and use the invention.It is ripe
Knowing the personnel of art technology obviously can easily make these embodiments various modifications, and general original described herein
It ought to use in other embodiment without having to go through creative labor.Therefore, the invention is not restricted to above-described embodiment, this fields
Technical staff's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be in the guarantors of the present invention
Within the scope of shield.
Claims (8)
1. the gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder, which is characterized in that the structure includes Gasoline Engine Body
(3), the inlet manifold (10) and exhaust manifold (14) that are arranged on Gasoline Engine Body (3), fuel injector are arranged on Gasoline Engine Body
(3) spark plug (12) in, the in-cylinder water injection device (11) being arranged in Gasoline Engine Body (3) are connected with in-cylinder water injection device (11)
Logical high-pressure hydraulic pump unit, the cylinder being arranged in inlet manifold (10) outer water jet (8), water jet (8) is connected outside with cylinder
Low-pressure pump unit, respectively with fuel injector, spark plug (12), in-cylinder water injection device (11), high-pressure hydraulic pump unit, the outer water jet of cylinder
(8) and low-pressure pump unit electrical connection electronic controller (7).
2. the gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder according to claim 1, which is characterized in that described
Low-pressure pump unit include water tank (1), the low-pressure pump (2) being arranged in water tank (1), be connected with low-pressure pump (2)
Low pressure water rail (4), the low pressure water pipe that low pressure water rail (4) is connected with the outer water jet (8) of cylinder.
3. the gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder according to claim 2, which is characterized in that described
Low-pressure pump (2) hydraulic pressure added into 0.3-1MPa be delivered to low pressure water rail (4) again.
4. the gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder according to claim 2, which is characterized in that described
High-pressure hydraulic pump unit include the high-pressure hydraulic pump (5) being connected with low-pressure pump (2), the high pressure that is connected with high-pressure hydraulic pump (5)
Water rail (6), the high-pressure water pipe that high pressure water rail (6) is connected with in-cylinder water injection device (11).
5. the gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder according to claim 4, which is characterized in that described
High-pressure hydraulic pump (5) water be forced into after 35MPa be delivered to high pressure water rail (6) again.
6. the gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder according to claim 1, which is characterized in that described
Fuel injector include outside the in-cylinder injector (13) being arranged in Gasoline Engine Body (3) or the cylinder being arranged in inlet manifold (10)
One or both of fuel injector (9).
7. the gasoline engine structure of the double injections of cold water mix, feature inside and outside a kind of cylinder according to any one of claims 1 to 6
It is, the bent axle of the gasoline engine is equipped with the speed probe being electrically connected with electronic controller (7).
8. the gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder according to claim 7, which is characterized in that described
Water tank (1) in be equipped with the tank gage being electrically connected with electronic controller (7).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017108017517 | 2017-09-07 | ||
| CN201710801751 | 2017-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108060991A true CN108060991A (en) | 2018-05-22 |
Family
ID=62135099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711144152.9A Pending CN108060991A (en) | 2017-09-07 | 2017-11-17 | The gasoline engine structure of the double injections of cold water mix inside and outside a kind of cylinder |
Country Status (1)
| Country | Link |
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| CN (1) | CN108060991A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821717A (en) * | 2019-12-13 | 2020-02-21 | 昆明理工大学 | Three-position composite oil injector with water spraying function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459842A (en) * | 2009-06-04 | 2012-05-16 | 乔纳森·杰伊·范斯坦 | Internal combustion engine |
| WO2014206892A1 (en) * | 2013-06-28 | 2014-12-31 | Robert Bosch Gmbh | Apparatus and method for reducing the pollutants and/or fuel consumption of an internal combustion engine |
| US9291125B2 (en) * | 2011-04-22 | 2016-03-22 | Kawasaki Jukogyo Kabushiki Kaisha | Gas engine, control system and control method for gas engine |
| CN105569864A (en) * | 2014-11-04 | 2016-05-11 | 宝马股份公司 | Method for controlling combustion in an internal combustion engine and the internal combustion engine |
| CN106870207A (en) * | 2015-10-19 | 2017-06-20 | 罗伯特·博世有限公司 | Supply equipment and control electric pump supply water and spray into the method and apparatus of engine chamber |
-
2017
- 2017-11-17 CN CN201711144152.9A patent/CN108060991A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459842A (en) * | 2009-06-04 | 2012-05-16 | 乔纳森·杰伊·范斯坦 | Internal combustion engine |
| US9291125B2 (en) * | 2011-04-22 | 2016-03-22 | Kawasaki Jukogyo Kabushiki Kaisha | Gas engine, control system and control method for gas engine |
| WO2014206892A1 (en) * | 2013-06-28 | 2014-12-31 | Robert Bosch Gmbh | Apparatus and method for reducing the pollutants and/or fuel consumption of an internal combustion engine |
| CN105569864A (en) * | 2014-11-04 | 2016-05-11 | 宝马股份公司 | Method for controlling combustion in an internal combustion engine and the internal combustion engine |
| CN106870207A (en) * | 2015-10-19 | 2017-06-20 | 罗伯特·博世有限公司 | Supply equipment and control electric pump supply water and spray into the method and apparatus of engine chamber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821717A (en) * | 2019-12-13 | 2020-02-21 | 昆明理工大学 | Three-position composite oil injector with water spraying function |
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Application publication date: 20180522 |
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