CN109252990A - Meet the intake air temperature control system that gasoline compression ignition full working scope requires intake air temperature - Google Patents
Meet the intake air temperature control system that gasoline compression ignition full working scope requires intake air temperature Download PDFInfo
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- CN109252990A CN109252990A CN201811161783.6A CN201811161783A CN109252990A CN 109252990 A CN109252990 A CN 109252990A CN 201811161783 A CN201811161783 A CN 201811161783A CN 109252990 A CN109252990 A CN 109252990A
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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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
- F02M31/06—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air
- F02M31/08—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air the gases being exhaust gases
- F02M31/087—Heat-exchange arrangements between the air intake and exhaust gas passages, e.g. by means of contact between the passages
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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
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
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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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
- F02M31/10—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot liquids, e.g. lubricants or cooling water
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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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/20—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for cooling
- F02M31/205—Control
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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
Abstract
The invention discloses a kind of intake air temperature control systems for meeting gasoline compression ignition full working scope and requiring intake air temperature, double variable valve actuator for air air inlets connect inlet manifold, inlet manifold connects compressor, exhaust outlet connects exhaust main, and exhaust main connects turbine, and turbine connects preprocessor, intercooler is arranged in inlet manifold, preprocessor exhaust outlet connects two exhaust branches, wherein a setting second exhaust valve, another setting first exhaust valve and exhaust gas heat exchanger；Exhaust gas heat exchanger shell side water outlet is connect with intercooler shell side water inlet, and exhaust gas heat exchanger shell side water inlet is connect with intercooler shell side water outlet；Intercooler shell side water inlet is connect with the first radiator outlet, and intercooler shell side water outlet is connect with the first radiator water inlet；Intercooler shell side water outlet is connect with the second radiator water inlet, and intercooler shell side water inlet is connect with engine cooling water channel water outlet, and the second radiator outlet is connect with engine cooling water channel water inlet.
Description
Technical field
The present invention relates to field of internal combustion engine, and more specifically, it relates to a kind of gasoline compression ignition full working scopes that meets to air inlet temperature
Spend desired intake air temperature control system.
Background technique
Automobile industry is the mainstay industry of national economy, but with the increasingly increase of car ownership, caused by automobile
Environmental pollution and energy shortage the problems such as increasingly cause the attention of national governments.In order to cope with the increasingly serious energy and environment
Problem, various countries have formulated more stringent noxious emission and fuel economy regulation, therefore, fire to the high-efficiency cleaning of internal combustion engine
It burns control technology and proposes new challenge.
Gasoline is widely used in spark ignition type petrol engine as a kind of conventional fossil fuel.But spark ignition type
Petrol engine has the characteristics that pumping loss is big, compression ratio is low and easy pinking, is difficult to Fuel Petroleum in gasoline engine
It is utilized to efficient.Compared to gasoline engine, diesel engine has the characteristics that compression ratio is high, pumping loss is small.In addition, diesel engine speed
Low, the features such as amount of fresh air is sufficient, reaction compartment is big, is also beneficial to the fully oxidized of fuel.Fuel Petroleum compares diesel fuel
For, have the characteristics that volatility is good, delay period is long, is conducive to the trade-off relation for improving conventional diesel engine NOx-Soot.Therefore,
In recent years, it explores and realizes that the control technology of gasoline compression ignition (GCI) high-efficiency cleaning burning also becomes grinding for this field on a diesel engine
Study carefully hot issue.
With going deep into for research, scholar's discovery leads to that fuel activity is too low, ignitability since Fuel Petroleum octane number is excessively high
Energy is poor, delay period is long, and gasoline compression ignition (GCI) is made to there are problems that cold start difficulty and Smaller load combustion instability；And negative greatly
When lotus, since fuel to air equivalence is than increasing, gasoline compression ignition (GCI) has that burning occurs to early.Scholar studies discovery air inlet
Temperature is to control the critical boundaries condition of gasoline compression ignition (GCI) combustion stability and ignition timing.The air inlet of Smaller load in raising
Temperature, which is conducive to raising combustion stability, improvement efficiency of combustion and combustion economization, the intake air temperature for reducing high load working condition, to be had
Conducive to the trade-off relation for inhibiting kindling too early and improvement NOx-soot.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, provide it is a kind of meet gasoline compression ignition full working scope into
The intake air temperature control system of gas temperature requirement, takes full advantage of engine exhaust and cooling water heat to control intake air temperature,
It can be improved combustion stability and efficiency of combustion of the conventional gasoline compression ignition combustion mode in middle Smaller load, while in big load work
Inhibit when condition too early fight and improve the trade-off relation of NOx-soot.
The purpose of the present invention is what is be achieved through the following technical solutions.
The intake air temperature control system for meeting gasoline compression ignition full working scope and intake air temperature being required of the invention, including be set to
Each cylinder air inlet of double variable valve actuator for air in compression ignition engine, double variable valve actuator for air is respectively connected with air inlet
Manifold, all inlet manifold are all connected with inlet manifold gas outlet, and inlet manifold's air inlet connects compressor exhaust outlet, described
Compressor air inlet machine mouth connects air cleaner；Each cylinder exhaust port is respectively connected with exhaust manifold, and all exhaust manifolds are all connected with
Exhaust main air inlet, the exhaust main exhaust outlet connects turbine air inlet, after the gas turbine exhaust mouth is connected with
Device is managed, is provided with fuel injector and glow plug, the inlet manifold gas outlet in each cylinder of double variable valve actuator for air
It is provided with intake air temperature sensor；
The inlet manifold is provided with intercooler, between the inlet manifold and exhaust main of the intercooler inlet end connection
It is connected with branch tracheae, the branch tracheae is provided with EGR valve and EGR check valve；The exhaust outlet of the preprocessor is connected with
Two exhaust branches being arranged in parallel a, wherein exhaust branch is provided with second exhaust valve, another exhaust branch setting
There are first exhaust valve and exhaust gas heat exchanger；The intercooler tube side is connected with inlet manifold, the exhaust gas heat exchanger tube side
It is connected with the exhaust branch where it, the first exhaust valve is set to exhaust gas heat exchanger air inlet；
The exhaust gas heat exchanger shell side water outlet is connected by waterway pipe with intercooler shell side water inlet, and the water route
Third water pump and the first water path valve are provided on pipeline, the exhaust gas heat exchanger shell side water inlet is cold in by waterway pipe
Device shell side water outlet is connected, and the 6th water path valve is provided on the waterway pipe；The intercooler shell side water inlet passes through
Waterway pipe is connected with the first radiator outlet, and the first water pump and the second water path valve are provided on the waterway pipe,
The intercooler shell side water outlet is connected by waterway pipe with the first radiator water inlet, and is provided on the waterway pipe
7th water path valve；The intercooler shell side water outlet is connected by waterway pipe with the second radiator water inlet, and the water
The 5th water path valve is provided on the pipeline of road, the intercooler shell side water inlet is gone out by waterway pipe and engine cooling water channel
The mouth of a river is connected, and third water path valve is provided on the waterway pipe, which connect with the second radiator water inlet
Waterway pipe between be connected with branch water pipe road, the branch water pipe road is provided with the 4th water path valve, second heat dissipation
Device water outlet is connected by waterway pipe with engine cooling water channel water inlet, and the second water is provided on the waterway pipe
Pump.
The first exhaust valve, second exhaust valve, exhaust gas heat exchanger, third water pump, the first water path valve, in it is cold
Device, the 6th water path valve constitute exhaust gas heating air inlet circulation, the recirculated water flow direction are as follows: exhaust gas heat exchanger water outlet → third
Water pump → the first water path valve → intercooler water inlet → intercooler water outlet → six water path valves → exhaust gas heat exchanger enters water
Mouth → exhaust gas heat exchanger water outlet, the exhaust stream by first exhaust valve and second exhaust valve controlling flow through exhaust gas heat exchanger
It measures to heat the temperature of simultaneously control loop water, the recirculated water after heating heats air inlet in intercooler, meets gasoline pressure
Fire the requirement in middle small load condition to intake air temperature is improved.
Second radiator, the second water pump, third water path valve, intercooler, the 5th water path valve composition engine are cold
But water heating air inlet circulation, the recirculated water flow direction are as follows: the second radiator outlet → the second water pump → engine cooling water
Road water inlet → engine cooling water channel water outlet → third water path valve → intercooler water inlet → intercooler water outlet → the
Five water path valves → the second radiator water inlet → second radiator outlet, this circulation recycle the high-temperature cooling water of engine
Achieve the purpose that heat air inlet into intercooler.
Second radiator, the second water pump, the 4th water path valve constitute engine cooling water temperature control loop, this is followed
Ring water flowing direction are as follows: the second radiator outlet → the second water pump → engine cooling water channel water inlet → engine cooling water
Road water outlet → the 4th water path valve → the second radiator water inlet → second radiator outlet, by adjusting the second water pump stream
Amount or the 4th water path valve aperture control the cooling water flow for flowing through engine, to guarantee that engine cooling water is in always
Optimum temperature range.
First radiator, the first water pump, the second water path valve, intercooler, the 7th water path valve constitute engine into
Air cooling circulation, the recirculated water flow direction are as follows: the first radiator outlet → the first water pump → the second water path valve → in it is cold
Device water inlet → intercooler water outlet → the 7th water path valve → the first radiator water inlet → first radiator outlet, passes through
The first pump capacity or the second water path valve aperture or the 7th water path valve aperture are adjusted to adjust the cooling water for flowing through intercooler
Flow is to guarantee suitable intensity of cooling.
Compared with prior art, the beneficial effects brought by the technical solution of the present invention are as follows:
The present invention includes exhaust gas heating air inlet circulation, engine cooling water heating air inlet circulation, engine cooling water temperature
Control loop and engine charge cooling cycle are different to realize by the control to water pump state and water path valve state
Circulation, is used in combination by multi-cycle and meets gasoline compression ignition (GCI) to the rigors of full working scope intake air temperature.
The present invention makes full use of the heat air inlet of exhaust gas and engine cooling water, improves the utilization of fuel energy
Rate；And air inlet pipeline does not need to increase additional components, only need to rationally adjust flow through air intake intercooler cooling water temperature and
Flow can meet gasoline compression ignition (GCI) full working scope range to the rigors of intake air temperature.
The intake air temperature of middle Smaller load can be improved through the invention to improve gasoline compression ignition (GCI) combustion stability and combustion
Burn efficiency, while can reduce the intake air temperature of high load working condition come inhibit too early fight improve NOx-soot compromise close
System.The present invention does not need additionally to energize, and does not need to add additional elements in air inlet pipeline yet, has heavy in practical multi-cylinder
The prospect of practical application and industrialization in diesel engine.
Detailed description of the invention
Fig. 1 is that the present invention meets gasoline compression ignition full working scope and shows the structure for the intake air temperature control system that intake air temperature requires
It is intended to.
Appended drawing reference: 1 first radiator, 2 first water pumps, 3 fuel injectors, 4 intake air temperature sensor, 5 glow plugs, 6 thirds
Water path valve, 7 second water path valves, 8 first water path valves, 9 intercoolers, 10 the 4th water path valves, 11 the 5th water path valves, 12
Air cleaner, 13EGR check valve, 14EGR valve, 15 compressors, 16 turbines, 17 preprocessors, 18 third water pumps, 19 first
Drain tap, 20 second exhaust valves, 21 exhaust gas heat exchangers, 22 the 6th water path valves, 23 second radiators, 24 the 7th water route valves
Door, 25 second water pumps, 26 pairs of variable valve actuator for air.
Specific embodiment
Technical solution of the present invention is described in further detail in the following with reference to the drawings and specific embodiments, it is described specific
Embodiment is only explained the present invention, is not intended to limit the invention.
As shown in Figure 1, the intake air temperature control system for meeting gasoline compression ignition full working scope and intake air temperature being required of the invention,
Including the double variable valve actuator for air 26 being set in compression ignition engine, in each cylinder of double variable valve actuator for air 26
It is provided with fuel injector 3 and glow plug 5.Each cylinder air inlet of double variable valve actuator for air 26 is respectively connected with inlet manifold,
All inlet manifold are all connected with inlet manifold gas outlet, and inlet manifold's air inlet connects 15 exhaust outlet of compressor, the pressure
15 air inlet of mechanism of qi connects air cleaner 12.The inlet manifold gas outlet is provided with intake air temperature sensor 4.Described pair can
Each cylinder exhaust port of air valve variation mechanism 26 is respectively connected with exhaust manifold, and all exhaust manifolds are all connected with exhaust main air inlet
Mouthful, the exhaust main exhaust outlet connects 16 air inlet of turbine.
By axis connection, 16 exhaust outlet of turbine is connected with preprocessor 17 for the turbine 16 and compressor 15,
The exhaust outlet of the preprocessor 17 is connected with two exhaust branches being arranged in parallel, wherein an exhaust branch is provided with second
Drain tap 20, another exhaust branch are provided with first exhaust valve 19 and exhaust gas heat exchanger 21.Inlet manifold's setting
There is intercooler 9, is connected with branch tracheae, the branch between the inlet manifold and exhaust main of 9 input end of the intercooler connection
Road tracheae is provided with EGR valve 14 and EGR check valve 13.Wherein, 9 tube side of intercooler is connected with inlet manifold, the row
21 tube side of gas heat exchanger is connected with the exhaust branch where it, the first exhaust valve 19 be set to exhaust gas heat exchanger 21 into
Port.Wherein, air intake intercooler 9 is used as air-intake heating mechanism simultaneously.
The 21 shell side water outlet H of exhaust gas heat exchanger is connected by waterway pipe with 9 shell side water inlet B of intercooler, and
Third water pump 18 and the first water path valve 8 are provided on the waterway pipe, the 21 shell side water inlet I of exhaust gas heat exchanger passes through water
Road pipeline is connected with 9 shell side water outlet E of intercooler, and the 6th water path valve 22 is provided on the waterway pipe.It is cold in described
9 shell side water inlet B of device is connected by waterway pipe with 1 water outlet A of the first radiator, and is provided with first on the waterway pipe
Water pump 2 and the second water path valve 7, the 9 shell side water outlet E of intercooler pass through waterway pipe and 1 water inlet N phase of the first radiator
Connection, and the 7th water path valve 24 is provided on the waterway pipe.The 9 shell side water outlet E of intercooler by waterway pipe with
Second radiator, 23 water inlet K is connected, and the 5th water path valve 11 is provided on the waterway pipe, 9 shell side of intercooler
Water inlet B is connected by waterway pipe with engine cooling water channel water outlet D, and third water route is provided on the waterway pipe
Valve 6 is connected with branch water pipe road between the waterway pipe of 23 water inlet K connection of the waterway pipe and the second radiator, described
Branch water pipe road is provided with the 4th water path valve 10, and the 23 water outlet L of the second radiator is cold by waterway pipe and engine
But water channel water inlet M is connected, and the second water pump 2 is provided on the waterway pipe.Wherein, first radiator 1 and second
Radiator 23 is installed in windward side and is conducive to heat dissipation.
The first exhaust valve 19, second exhaust valve 20, exhaust gas heat exchanger 21, third water pump 18, the first water route valve
Door 8, intercooler 9, the 6th water path valve 22 constitute exhaust gas heating air inlet circulation, the recirculated water flow direction are as follows: exhaust gas heat exchanger
21 water outlets → third water pump, 18 → the first 8 → intercooler of water path valve, 9 water inlets → 9 water outlet of intercooler → the 6th water route valve
22 → exhaust gas heat exchanger of door, 21 water inlets → 21 water outlet of exhaust gas heat exchanger, pass through first exhaust valve 19 and second exhaust valve
20 controls flow through the extraction flow of exhaust gas heat exchanger 21 to heat the temperature of simultaneously control loop water, and the recirculated water after heating is cold in
Air inlet is heated in device 9, meets requirement of the gasoline compression ignition (GCI) in middle small load condition to intake air temperature is improved.Working medium
It is heated up by 21 draws engine exhaust gas of exhaust gas heat exchanger, air inlet is then heated by intercooler 9, by adjusting first exhaust
Valve 19 and the adjustable cooling water temperature of 20 aperture of second exhaust valve, by adjusting 18 flow of third water pump or the 6th water route
22 aperture of valve or the adjustable cooling water flow for flowing through intercooler 9 of 8 aperture of the first water path valve, comprehensively control coolant water temperature
Degree and flow are adjustable inlet air heating intensity to meet the intake air temperature requirement of each operating condition.
Second radiator 23, the second water pump 25, third water path valve 6, intercooler 9, the 5th water path valve 11 are constituted
Engine cooling water heats air inlet circulation, the recirculated water flow direction are as follows: and the water pump of 23 water outlet of the second radiator → second 25 →
Engine cooling water channel water inlet → engine cooling water channel water outlet → 6 → intercooler of third water path valve, 9 water inlet → in
9 water outlet of cooler → 11 → the second radiator of the 5th water path valve, 23 water inlet → 23 water outlet of the second radiator, this circulation will
The high-temperature cooling water of engine, which is recycled in intercooler 9, to be achieved the purpose that heat air inlet.Engine cooling water adds by intercooler 9
Hot air inlet adjusts the cooling water flow for flowing through intercooler 9 by adjusting third water path valve 6 or 11 aperture of the 5th water path valve
To guarantee suitable heating intensity.
Second radiator 23, the second water pump 25, the 4th water path valve 10 constitute engine cooling water temperature control and follow
Ring, the recirculated water flow direction are as follows: 23 water outlet of the second radiator → second 25 → engine cooling water channel of water pump water inlet →
Engine cooling water channel water outlet → 10 → the second radiator of the 4th water path valve, 23 water inlet → 23 water outlet of the second radiator,
The cooling water flow for flowing through engine is controlled by adjusting 25 flow of the second water pump or 10 aperture of the 4th water path valve, to protect
Card engine cooling water is in optimum temperature range always.By the 4th water path valve 10, engine cooling water can be without
Intercooler 9 and be directly entered the second radiator 23, engine cooling water temperature independent control is realized with this.
First radiator 1, the first water pump 2, the second water path valve 7, intercooler 9, the 7th water path valve 24 constitute hair
Motivation inlet gas cooling circulation, the recirculated water flow direction are as follows: 1 water outlet of the first radiator → first water pump, 2 → the second water route valve
7 → intercooler of door, 9 water inlets → 9 water outlet of intercooler → 24 → the first radiator of the 7th water path valve, 1 water inlet → the first dissipates
Hot 1 water outlet of device, the circulation are mainly used for reducing intake air temperature in high load working condition.By adjusting 2 flow of the first water pump or the
Two water path valves, 7 aperture or 24 aperture of the 7th water path valve are suitable to guarantee to adjust the cooling water flow for flowing through intercooler 9
Intensity of cooling, so that engine be made to be unlikely to catch fire too early in big load.Cooling water takes away partial engine by intercooler 9
Air inlet heat reduces intake air temperature, and the cooling water after being heated sheds heat by the first radiator 1.
Intake air temperature control system proposed by the invention include exhaust gas heating air inlet circulation, engine cooling water heat into
Gas circulation, engine cooling water temperature control loop and engine charge cooling cycle, by water pump state and water route valve
The control of door state is used in combination by multi-cycle to realize different circulations and meets gasoline compression ignition (GCI) to full working scope air inlet
The rigors of temperature.In high load working condition, cooling water temperature is controlled using engine cooling water temperature control loop
In target temperature range, while lower intake air temperature is realized using inlet gas cooling circulation, thus inhibit too early improvement of fighting
The trade-off relation of NOx-soot；In middle small load condition, circulation and engine cooling water heating can be carried out using exhaust gas heating
Air inlet circulation heats air inlet, is accurately controlled by the control to drain tap, water path valve aperture and pump rotary speed
Intake air temperature processed, thus combustion stability and efficiency of combustion in improving when Smaller load.Illustrate in table 1 through water pump state and
The method that different waterway circulatings are realized in the combination control of water path valve state.
Table 1
To meet gasoline compression ignition (GCI) full working scope to intake air temperature requirement, four kinds of circulations can be used in combination.In Smaller load
Operating condition can be opened first after engine interior cooling water temperature reaches target temperature range using exhaust gas heating air inlet circulation
Engine cooling water temperature control loop and engine cooling water heating are recycled, and inlet gas cooling circulation is closed, and are improved small negative
To the heating efficiency of air inlet under lotus operating condition, meet GCI under small load condition to the requirement of intake air temperature；In moderate duty operating condition
Under, engine cooling water heating air inlet circulation and inlet gas cooling circulation is used in combination, by controlling third water path valve 6 and second
The aperture control heating of water path valve 7 and cooling water flow, to realize the requirement under moderate duty operating condition to intake air temperature；?
Under high load working condition, using inlet gas cooling circulation and engine cooling water temperature control loop, the same of cooling is carried out to air inlet
When guarantee engine cooling water temperature it is normal.Therefore, the present invention is able to satisfy under gasoline compression ignition (GCI) full working scope to intake air temperature
Rigors have and realize gasoline compression ignition (GCI) potentiality that high-efficiency cleaning burns within the scope of full working scope, and have practical more
The prospect of practical application and industrialization in cylinder large diesel engine.
Although function and the course of work of the invention are described above in conjunction with attached drawing, the invention is not limited to
Above-mentioned concrete function and the course of work, the above mentioned embodiment is only schematical, rather than restrictive, ability
The those of ordinary skill in domain under the inspiration of the present invention, is not departing from present inventive concept and scope of the claimed protection situation
Under, many forms can be also made, all of these belong to the protection of the present invention.
Claims (5)
1. a kind of intake air temperature control system for meeting gasoline compression ignition full working scope and intake air temperature being required, including be set to compression-ignited
In-engine double variable valve actuator for air (26), each cylinder air inlet of double variable valve actuator for air (26) be respectively connected with into
Gas manifold, all inlet manifold are all connected with inlet manifold gas outlet, inlet manifold's air inlet connection compressor (15) exhaust
Mouthful, compressor (15) air inlet connects air cleaner (12)；Each cylinder exhaust port is respectively connected with exhaust manifold, owns
Exhaust manifold is all connected with exhaust main air inlet, and the exhaust main exhaust outlet connects turbine (16) air inlet, the turbine
Machine (16) exhaust outlet is connected with preprocessor (17), which is characterized in that in each cylinder of double variable valve actuator for air (26)
It is provided with fuel injector (3) and glow plug (5), the inlet manifold gas outlet is provided with intake air temperature sensor (4)；
The inlet manifold is provided with intercooler (9), the inlet manifold of intercooler (9) input end connection and exhaust main it
Between be connected with branch tracheae, the branch tracheae is provided with EGR valve (14) and EGR check valve (13)；The preprocessor (17)
Exhaust outlet be connected with two exhaust branches being arranged in parallel, wherein an exhaust branch is provided with second exhaust valve (20),
Another exhaust branch is provided with first exhaust valve (19) and exhaust gas heat exchanger (21)；Intercooler (9) tube side and air inlet
General pipeline is connected, and exhaust gas heat exchanger (21) tube side is connected with the exhaust branch where it, the first exhaust valve
(19) it is set to exhaust gas heat exchanger (21) air inlet；
Exhaust gas heat exchanger (21) the shell side water outlet is connected by waterway pipe with intercooler (9) shell side water inlet, and should
Third water pump (18) and the first water path valve (8) are provided on waterway pipe, exhaust gas heat exchanger (21) the shell side water inlet is logical
It crosses waterway pipe to be connected with intercooler (9) shell side water outlet, and is provided with the 6th water path valve (22) on the waterway pipe；Institute
It states intercooler (9) shell side water inlet and is connected by waterway pipe with the first radiator (1) water outlet, and set on the waterway pipe
It is equipped with the first water pump (2) and the second water path valve (7), intercooler (9) the shell side water outlet is dissipated by waterway pipe and first
Hot device (1) water inlet is connected, and the 7th water path valve (24) is provided on the waterway pipe；Intercooler (9) shell side goes out
The mouth of a river is connected by waterway pipe with the second radiator (23) water inlet, and the 5th water path valve is provided on the waterway pipe
(11), intercooler (9) the shell side water inlet is connected by waterway pipe with engine cooling water channel water outlet, and the water route
Be provided on pipeline third water path valve (6), the waterway pipe which connect with the second radiator (23) water inlet it
Between be connected with branch water pipe road, the branch water pipe road is provided with the 4th water path valve (10), and second radiator (23) goes out
The mouth of a river is connected by waterway pipe with engine cooling water channel water inlet, and the second water pump (2) are provided on the waterway pipe.
2. the intake air temperature control system according to claim 1 for meeting gasoline compression ignition full working scope and intake air temperature being required,
It is characterized in that, the first exhaust valve (19), second exhaust valve (20), exhaust gas heat exchanger (21), third water pump (18),
First water path valve (8), intercooler (9), the 6th water path valve (22) constitute exhaust gas heating air inlet circulation, the recirculated water flowing side
To are as follows: exhaust gas heat exchanger (21) water outlet → third water pump (18) → first water path valve (8) → intercooler (9) water inlet → in
Cooler (9) water outlet → the 6th water path valve (22) → exhaust gas heat exchanger (21) water inlet → exhaust gas heat exchanger (21) water outlet,
The extraction flow of exhaust gas heat exchanger (21) is flowed through by first exhaust valve (19) and second exhaust valve (20) control to heat
And the temperature of control loop water, the recirculated water after heating heat air inlet in intercooler (9), meet gasoline compression ignition in
Requirement of the small load condition to intake air temperature is improved.
3. the intake air temperature control system according to claim 1 for meeting gasoline compression ignition full working scope and intake air temperature being required,
It is characterized in that, second radiator (23), the second water pump (25), third water path valve (6), intercooler (9), the 5th water route
Valve (11) constitutes engine cooling water heating air inlet circulation, the recirculated water flow direction are as follows: the second radiator (23) water outlet
→ the second water pump (25) → engine cooling water channel water inlet → engine cooling water channel water outlet → third water path valve (6) →
Intercooler (9) water inlet → intercooler (9) water outlet → the five water path valve (11) → second radiator (23) water inlet → the
The high-temperature cooling water of engine is recycled to the mesh for reaching heating air inlet in intercooler by second radiator (23) water outlet, this circulation
's.
4. the intake air temperature control system according to claim 1 for meeting gasoline compression ignition full working scope and intake air temperature being required,
It is characterized in that, second radiator (23), the second water pump (25), the 4th water path valve (10) composition engine coolant temperature
Spend control loop, the recirculated water flow direction are as follows: the second radiator (23) water outlet → the second water pump (25) → engine cool
Water channel water inlet → four water path valve of engine cooling water channel water outlet → the (10) → second radiator (23) water inlet → the
Second radiator (23) water outlet flows through hair by adjusting the second water pump (25) flow or the 4th water path valve (10) aperture to control
The cooling water flow of motivation, to guarantee that engine cooling water is in optimum temperature range always.
5. the intake air temperature control system according to claim 1 for meeting gasoline compression ignition full working scope and intake air temperature being required,
It is characterized in that, first radiator (1), the first water pump (2), the second water path valve (7), intercooler (9), the 7th water route valve
Door (24) constitutes engine charge cooling cycle, the recirculated water flow direction are as follows: the first radiator (1) water outlet → first water pump
(2) → second water path valve (7) → seven water path valve (24) → the of intercooler (9) water inlet → intercooler (9) water outlet → the
One radiator (1) water inlet → the first radiator (1) water outlet, by adjusting the first water pump (2) flow or the second water path valve
(7) aperture or the 7th water path valve (24) aperture adjust the cooling water flow for flowing through intercooler (9) to guarantee suitable cooling
Intensity.
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| CN112555079A (en) * | 2020-12-02 | 2021-03-26 | 长安大学 | Methanol fuel engine and starting control method thereof |
| WO2021073057A1 (en) * | 2019-10-15 | 2021-04-22 | 吉林大学 | Vehicle dual-circulating cooling system, and vehicle |
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| CN109252990B (en) | 2020-10-13 |
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