CN108979925A - Methanol engine and vehicle - Google Patents
Methanol engine and vehicle Download PDFInfo
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- CN108979925A CN108979925A CN201810835641.7A CN201810835641A CN108979925A CN 108979925 A CN108979925 A CN 108979925A CN 201810835641 A CN201810835641 A CN 201810835641A CN 108979925 A CN108979925 A CN 108979925A
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- Prior art keywords
- methanol
- manifold
- gasoline
- engine
- fuel injector
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
- F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
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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
- F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0602—Control of components of the fuel supply system
- F02D19/0613—Switch-over from one fuel to another
- F02D19/0615—Switch-over from one fuel to another being initiated by automatic means, e.g. based on engine or vehicle operating conditions
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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
- F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
- F02D19/0652—Biofuels, e.g. plant oils
- F02D19/0655—Biofuels, e.g. plant oils at least one fuel being an alcohol, e.g. ethanol
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3076—Controlling fuel injection according to or using specific or several modes of combustion with special conditions for selecting a mode of combustion, e.g. for starting, for diagnosing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The present invention provides a kind of methanol engine and vehicles, are related to methanol engine field.The injector assembly of methanol engine of the invention is arranged on motor intake manifold, injector assembly includes mutually independent gasoline oil spout component and methanol oil spout component, a methanol fuel injector and a gasoline cold start fuel injector device are individually equipped in methanol engine at the respective manifold of each cylinder, methanol and gasoline can be sprayed directly into manifold.Due to being equipped with gasoline cold start fuel injector device at the manifold of each cylinder, directly gasoline is ejected into the manifold of inlet manifold and is mixed with air, and be not directly gasoline is ejected into mixed with air in the air inlet pressure stabilizing cavity of inlet manifold after be redistributed to manifold, the amount of injection of gasoline can be effectively controlled in this way, it avoids the problem that methanol engine engine cold-start because caused by for shortage of oil in cold start-up fails, and methanol engine is avoided to cause to discharge exceeded problem because oil spout is excessive in cold start-up.
Description
Technical field
The present invention relates to methanol engine fields, more particularly to a kind of methanol engine and vehicle.
Background technique
With the aggravation of Pressure on Energy and pollution problem, the raising of car ownership, motor vehicle fuel is intended to diversification, and
Methanol belongs to clean energy resource, not only economy, low-carbon environment-friendly, also reduces CO2 emissions, methanol-fueled engine just by
Step is gradually in the marketization.
Currently, domestic heavy type methanol engine fuel supply mainly uses the double fuel combustion system of diesel oil and methanol, i.e.,
Install methanol spraying system additional on a conventional diesel intake elbow and carry out single point injection, starting, warming up and
When Smaller load works, engine is worked with pure diesel oil and carries out diffusion combustion；In middle high load capacity, sprayed into diesel engine intake bend pipe
Part methanol fuel is allowed to enter cylinder with air inlet formation homogeneous charge, by diesel oil ignited realization mixture combustion.
Above-mentioned heavy type methanol engine has the following problems:
Engine structure and control are complicated, are respectively necessary for two sets of control systems and fuel injection system, engine are at high cost；
It is not involved in burning in starting, warming up and small load condition methanol, a diesel combustion keeps engine emission poor；
When high load capacity works in engine, the replacement of fuel rate of double fuel methanol engine only has 30% at present, engine
NOx and granular material discharged it is only capable of reaching that diesel engine national Ⅲ emission is horizontal, and economic advantages are unobvious.
Summary of the invention
It is an object of the present invention to provide a kind of methanol engine and vehicle, using M100 fuel, to reduce hair
Motivation tailpipe emission amount.
A further object of the present invention is to use new fuel feed system, pure methanol is solved as vehicle fuel institute
Bring cold-starting problem.
On the one hand, the present invention provides a kind of methanol engines, comprising:
Engine body；
Gas handling system with inlet manifold provides air, the air inlet for the cylinder into the engine body
Manifold includes air inlet pressure stabilizing cavity and multiple manifolds for being connected to the air inlet pressure stabilizing cavity, between the multiple manifold two-by-two mutually solely
It is vertical；And
For providing the fuel feed system of fuel for the engine body comprising an injector assembly；Wherein,
The injector assembly includes one for spraying the methanol oil spout component and a use of methanol directly into the multiple manifold
In the gasoline oil spout component of the injected petrol directly into the multiple manifold, the methanol oil spout component and the gasoline oil spout group
Part is mutually indepedent, and the gasoline oil spout component is cold-started for realizing the methanol engine.
Optionally, the methanol oil spout component include methanol oil rail and be set on the methanol oil rail and with it is the multiple
Multiple methanol fuel injectors, the methanol fuel injector are used to spray methanol into the manifold manifold correspondingly；
The gasoline oil spout component include gasoline oil rail and be set on the gasoline oil rail with the multiple manifold one
One corresponding multiple gasoline cold start fuel injector devices, the gasoline cold start fuel injector device are used for the injected petrol into the manifold.
Optionally, the gasoline cold start fuel injector device be configured to by fuel injector spout along the manifold axial direction to
Injected petrol in the manifold；
The methanol fuel injector is configured to spray along the axial direction of the manifold into the manifold by fuel injector spout
Penetrate methanol.
Optionally, the fuel feed system is configured to control the methanol fuel injector according to the temperature of engine coolant
Or the gasoline cold start fuel injector device alternatively sprays fuel into the manifold.
Optionally, the fuel feed system is configured to when the temperature of the engine coolant is lower than preset temperature
Control the gasoline cold start fuel injector device into the manifold injected petrol to realize methanol engine cold start-up.
Optionally, the preset temperature is 15 DEG C -25 DEG C.
Optionally, the gas handling system further includes exhaust gas recycling EGR mixer and electronic throttle, the EGR mixing
Device includes a gas outlet and two air inlets, wherein and the gas outlet is connected with the air inlet of the air inlet pressure stabilizing cavity, and one
A air inlet is connected with the electronic throttle, another air inlet is connected to exhaust gas recirculation circuit.
Optionally, crankcase ventilation system, for handling the gas blowby in crankcase to balance the pressure in the crankcase.
Optionally, the crankcase ventilation system is closed crankcase ventilation system；
The closed crankcase ventilation system includes air inlet pipe, gs-oil separator, escape pipe and oil return pipe；Wherein, described
Escape pipe branches into the first escape pipe and the second escape pipe, and after first escape pipe is connected to air cleaner, described second goes out
Tracheae is connected with the air inlet stable cavity, is in series with check valve on second escape pipe.
On the other hand, the present invention also provides a kind of vehicle, the above-mentioned methanol engines of the vehicle.
Methanol engine of the invention, due to using pure methanol, as fuel, the cleaning burning of fuel may be implemented, reduce
Engine Emissions object discharge amount.Further, the injector assembly of methanol engine is arranged on motor intake manifold,
Injector assembly includes mutually independent gasoline oil spout component and methanol oil spout component, the correspondence of each cylinder in methanol engine
At manifold individually be equipped with a methanol fuel injector and a gasoline cold start fuel injector device, can spray directly into manifold methanol with
Gasoline.Due to being equipped with gasoline cold start fuel injector device at the manifold of each cylinder, gasoline is directly ejected into the discrimination of inlet manifold
Mixed with air in pipe, and be not directly gasoline is ejected into mixed with air in the air inlet pressure stabilizing cavity of inlet manifold after divide again
It is fitted on manifold, can effectively control the amount of injection of gasoline in this way, methanol engine is avoided to draw due to for shortage of oil in cold start-up
The problem of engine cold-start failure risen, and avoid methanol engine in cold start-up because oil spout is excessive cause to discharge it is exceeded
The problem of.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic installation diagram of methanol engine according to an embodiment of the invention；
Fig. 2 is the schematic apparatus figure of the injector assembly in methanol engine shown in Fig. 1；
Fig. 3 is schematic apparatus figure when injector assembly shown in Fig. 2 is installed to methanol engine；
Fig. 4 is the schematic apparatus that injector assembly in accordance with another embodiment of the present invention is installed to methanol engine
Figure；
Fig. 5 is the schematic apparatus figure of the gas handling system in methanol engine shown in Fig. 1；
Fig. 6 is schematic apparatus figure of the gas handling system under another angle in methanol engine shown in Fig. 1；
Fig. 7 is the schematic apparatus figure of the closed crankcase ventilation system in methanol engine shown in Fig. 1.
Specific embodiment
Fig. 1 is the schematic installation diagram of heavy methanol engine according to an embodiment of the invention.Fig. 2 is shown in Fig. 1
The schematic apparatus figure of injector assembly in methanol engine.Fig. 3 is that injector assembly shown in Fig. 2 is installed to methanol engine
When schematic apparatus figure.Fig. 4 is that injector assembly in accordance with another embodiment of the present invention is installed to showing for methanol engine
Meaning property device figure.Fig. 5 is the schematic apparatus figure of the gas handling system in methanol engine shown in Fig. 1.Fig. 6 is methanol shown in Fig. 1
Schematic apparatus figure of the gas handling system under another angle in engine.Fig. 7 is that the enclosed in methanol engine shown in Fig. 1 is bent
The schematic apparatus figure of ventilation system for shaft box.The methanol engine of the embodiment of the present invention is described referring to Fig. 1 to Fig. 7.
With reference to Fig. 1, a kind of methanol engine 100 can be light-duty methanol engine, can also be that heavy methanol starts
Machine.Methanol engine 100 is using the pure methanol of M100 as fuel comprising engine body 1, gas handling system 2 and fuel supply
System 3.With further reference to Fig. 4, engine body 1 can be natural gas engine ontology, and multiple cylinders 11 are arranged inside.Into
Gas system 2 is for providing air into cylinder 11.Inlet manifold 20 in gas handling system 2 includes air inlet pressure stabilizing cavity 21 and and air inlet
Pressure stabilizing cavity 21 is connected and mutually independent multiple manifolds 22.The quantity of manifold 22 is identical as the quantity of cylinder 11 and the two one is a pair of
It answers, manifold 22 runs through engine cylinder cover 12, to spray air into cylinder 11.Fuel feed system 3 is used for engine body 1
Fuel is provided, fuel feed system 3 includes the injector assembly of at least one alone jetting fuel directly into each manifold 22
30, fuel enters cylinder 11 with air after spraying into manifold 22 after evenly mixing.The size and specific structure of injector assembly 30 can
Determined according to the model of methanol engine 100 and size.
Methanol engine 100 in the embodiment of the present invention is the spark-ignition engine using pure methanol as fuel, due to
Methanol relative to other fuel source, power, cost and in terms of have relative advantage, the cleaning of fuel may be implemented
Burning reduces Engine Emissions object discharge amount, is more advantageous to the popularization and application in market.Further, injector assembly 30
The alone jetting fuel directly into each manifold 22 makes to mix to ensure that air in each cylinder 11 and fuel are uniformly mixed
Gas is maintained at chemically correct fuel range and nearby burns, and improves efficiency of combustion.
With reference to Fig. 2, in one embodiment, injection has been separately configured using double oily rails, each oil rail in injector assembly 30
The injector of the fuel, fuel feeding pressure are 4.5bar.Injector assembly 30 is additionally provided with oil return system.Specifically, each oil spout
Device assembly 30 include one for directly into manifold 22 spray methanol methanol oil spout component 31 and one for directly to
The gasoline oil spout component 32 of injected petrol in manifold 22, methanol oil spout component 31 and gasoline oil spout component 32 are mutually indepedent.Methanol
Oil spout component 31 includes methanol oil rail 311 and is set on methanol oil rail 311 and identical as 22 quantity of manifold in inlet manifold 20
Methanol fuel injector 312, methanol fuel injector 312 and manifold 22 correspond, for spraying methanol into manifold 22.Gasoline oil spout
Component 32 includes gasoline oil rail 321 and is set on gasoline oil rail 321 and gasoline cold start fuel injector identical with 22 quantity of manifold
Device 322, gasoline cold start fuel injector device 322 and manifold 22 correspond, for the injected petrol into manifold 22.Gasoline oil spout component
32 are only used for realizing methanol engine cold start-up.Methanol fuel injector and gasoline cold start fuel injector device operating voltage are 24V.
Using above-mentioned injector assembly 30, due to being equipped with gasoline cold start fuel injector device at the manifold 22 of each cylinder 11
322, so that the amount of gasoline sprayed in each cylinder 11 is not only can guarantee engine cold-start, but also it is possible to prevente effectively from order to guarantee to start
Machine is cold-started successfully, and big petrol is sprayed into inlet manifold 20 and causes discharge not up to standard.
Further, it is be easy to cause wet wall since the oily beam that fuel injector spout sprays is ejected on tracheae wall surface, influences vapour
Oil and gasization and cold start-up engine emission, therefore, in a preferred embodiment, gasoline cold start fuel injector device 322 is configured to
By fuel injector spout along the axial direction injected petrol of manifold 22, meanwhile, methanol fuel injector 312 is configured to spray by fuel injector
The axial direction of opening's edge manifold 22 sprays methanol into manifold 22.With reference to Fig. 3, the cylinder cap 12 of engine is vertically arranged, manifold 22
End outlet it is vertical with cylinder cap 12, therefore, when the oil spout direction of fuel injector is arranged, preferably the spout of fuel injector is sprayed
Fuel out is also perpendicularly to cylinder cap 12, and fuel is directly entered cylinder 11 after mixing with air, and avoids being sprayed on tube wall.It that is to say,
Fuel injector is configured to spray methanol along the axial direction of manifold 22 by fuel injector spout.
Further, fuel feed system 3 be configured to according to the temperature of engine coolant through methanol fuel injector 312 or
Gasoline cold start fuel injector device 322 alternatively sprays fuel into manifold 22.Specifically, injector assembly 30 is configured to work as and start
By gasoline cold start fuel injector device 322, into manifold 22, injected petrol is sent out with realizing when the temperature of machine coolant liquid is lower than preset temperature
The cold start-up of motivation, if the temperature of engine coolant is higher than preset temperature, controls after engine realizes cold start-up
Gasoline cold start fuel injector device 322 stops the injected petrol into manifold 22, and controls methanol fuel injector 312 and spray first into manifold 22
Alcohol.Preset temperature is 15 DEG C -25 DEG C, specifically, can be according to engine different model or location actual set, Ke Yiwei
15 DEG C, 20 DEG C or 25 DEG C, it can also be any number in 15 DEG C of -25 DEG C of ranges.
When methanol engine is cold-started, gasoline cold-start injector on manifold 22 controllably to 22 injected petrol of manifold,
Gasoline vaporising simultaneously forms combustion mixture with air, and into cylinder 11,13 ignition of spark plug, engine start is operated, to
After warming-up, it is switched to 312 oil spout of methanol fuel injector, gasoline cold-start injector stops oil spout, normal working of engine.In this way,
Fuel supply can use a set of control system, integrates the switching undisturbed of flexibly control two kinds of fuel of methanol and gasoline, realizes
The multipoint sequential injection of methanol, system structure is simple, low in cost, while also solving pure methanol and being brought as vehicle fuel
Cold-starting problem.
With continued reference to Fig. 2, it is unfavorable for quality control and production management in order to avoid the increase of machine part quantity, fuel injector
Assembly 30 further includes the oily rail bracket 33 of fixing fuel injector assembly 30, wherein methanol oil rail 311 and gasoline oil rail 321 pass through group
Bracket is closed to be fixed together or be affixed directly to together.In the embodiment depicted in figure 2, consider the convenience of mounting arrangements,
Methanol oil rail 311 and gasoline oil rail 321 are welded together, injector assembly 30 is fixed to hair by two oily rail brackets 33
In motivation.Before injector assembly 30 is installed to engine, first components in injector assembly 30 are assemblied together, it can
To avoid bad student's error during installation, engine is impacted.Specifically, methanol oil rail 311 and gasoline oil rail 321 are two
Mutually independent oil rail, squarely can be set in oily rail section.The shapes such as round or ellipse.Oily rail is equipped with for installing spray
Fuel injector is fixed on oily rail by the fuel injector mounting base of oily device.Be additionally provided with fuel inlet fitting on oily rail, by fuel inlet fitting with
Fuel tank is connected.
With reference to Fig. 4, region shown in dotted line is an injector assembly 30 shown in Fig. 3 in figure, in the implementation
In example, installation is there are two injector assembly 30 on a kind of heavy type methanol engine 100, due to the body of heavy methanol engine 100
Product is bigger, and using an injector assembly 30, oily rail is long, will affect installation accuracy, in addition, engine is in operational process
Middle generation vibration, is easy to impact long oil rail.In other embodiments, multiple injector assemblies can also be set, specifically
Quantity can be depending on engine model.
As shown in figure 4, a set of Methanol-gasoline oil rail injector assembly contains, 3 methanol fuel injector 312 and 3 gasoline are cold to be opened
Dynamic fuel injector 322, every heavy methanol engine 100 use two sets of 321 injector assemblies 30 of Methanol-gasoline oil rail.Cold start-up
When operating condition, gasoline pump work, methanol air pump inoperative, 6 gasoline cold start fuel injector devices 322 are directly to the manifold being connected with cylinder 11
Injected petrol in 22, gasoline mix well with air after being ejected into manifold 22, into cylinder 11 after lighted by spark plug 13；Work as temperature
After degree reaches preset threshold, engine is under nominal situation, methanol pump work, gasoline air pump inoperative, 6 methanol fuel injectors
312 spray methanol into manifold 22.In this embodiment, ECU need at most control 6 fuel injectors under any operating condition.Using the fuel
Feed system 3, mechanism is simple, and control logic is also succinct, at low cost.
It further include exhaust gas recirculation mixer (EGR mixer) and electronic throttle with reference to Fig. 5 and Fig. 6 gas handling system 2,
EGR mixer includes a gas outlet and two air inlets, wherein and gas outlet is connected with the air inlet of air inlet pressure stabilizing cavity 21,
One air inlet is connected with electronic throttle, another air inlet is connected to exhaust gas recirculation circuit.Further, each manifold
It is opened up on 22 there are two atomizer mounting hole, is respectively intended to installation methanol nozzle and gasoline cold start nozzle.Gas handling system 2 can
Realize that each cylinder is equal by optimization intake airflow dynamics model to improve each cylinder intake uniformity of inlet manifold 20 so that each cylinder air-fuel ratio is balanced
Even burning, to promote engine economy, dynamic property and discharge.Oil spout is arranged on each manifold 22 of inlet manifold 20
Device mounting hole is to realize the multipoint sequential injection of fuel.
It continues to refer to figure 1, methanol engine 100 further includes for handling the gas blowby in crankcase with the pressure of balance crankshaft case
The crankcase ventilation system 4 of power.Open crank case ventilating system 4 or closed crankcase ventilation system 4 can be used in engine.
With reference to Fig. 7, in the present embodiment, in order to further make discharge meet laws and regulations requirement, methanol engine uses enclosed
Crankcase ventilation system.It is matched by closed crankcase ventilation system with fuel feed system 3, crankcase emissions can be made
It comes back to engine body 1 and participates in burning, reduce pollutant discharge amount.Closed crankcase ventilation system 4 include air inlet pipe 41,
Gs-oil separator 42, escape pipe 43 and oil return pipe 44；Wherein, escape pipe 43 branches into the first escape pipe 431 and the second escape pipe
432, after the first escape pipe 431 is connected to air cleaner, the second escape pipe 432 is connected with air inlet stable cavity, the second escape pipe
Check valve 45 is in series on 432.
Closed crankcase ventilation system working principle is as follows: engine is in idling and underload, 20 vacuum of inlet manifold
Degree is big, and crankcase gas blowby enters inlet manifold 20 through gs-oil separator 42 and Pcv valve；At this time since crankcase gas leakage is few, and
And can be effectively discharged by Pcv valve, crankcase pressure can be lower than air inlet tube internal pressure after air filter, has portion gas and passes through sky
Filter side ventilation duct enters in crankcase, with balance crankshaft case pressure.Engine in big-and-middle load, due to throttle opening compared with
Greatly, and booster calm the anger after pressure it is higher, pressure rise is positive pressure in inlet manifold 20, and Pcv valve is closed, crankcase gas blowby at this time
It is discharged by air filter side ventilation duct, prevents crankcase pressure excessively high.Check valve 45 is configured to be greater than in the pressure of air inlet stable cavity
It closes when the pressure of crankcase, is opened when the pressure of air inlet stable cavity is less than the pressure of crankcase.
Methanol engine 100 in above-described embodiment may be implemented to discharge, methanol supply, igniting, theoretical air-fuel
Than the control of, pinking, EGR, Valve EGR, engine cold-start, EOBD diagnosis etc., it is right to meet heavy methanol engine 100
The functional requirement of electric-control system.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (10)
1. a kind of methanol engine characterized by comprising
Engine body；
Gas handling system with inlet manifold provides air, the inlet manifold for the cylinder into the engine body
It is mutually indepedent two-by-two between the multiple manifold including air inlet pressure stabilizing cavity and the multiple manifolds being connected to the air inlet pressure stabilizing cavity；
And
For providing the fuel feed system of fuel for the engine body comprising an injector assembly；Wherein, described
Injector assembly includes one and is used for directly for the methanol oil spout component of injection methanol directly into the multiple manifold and one
Connect the gasoline oil spout component of the injected petrol into the multiple manifold, the methanol oil spout component and the gasoline oil spout component phase
Mutually independent, the gasoline oil spout component is cold-started for realizing the methanol engine.
2. methanol engine according to claim 1, which is characterized in that
The methanol oil spout component includes methanol oil rail and is set on the methanol oil rail and a pair of with the multiple manifold one
The multiple methanol fuel injectors answered, the methanol fuel injector is for spraying methanol into the manifold；
The gasoline oil spout component includes gasoline oil rail and is set to a pair of with the multiple manifold one on the gasoline oil rail
The multiple gasoline cold start fuel injector devices answered, the gasoline cold start fuel injector device are used for the injected petrol into the manifold.
3. methanol engine according to claim 2, which is characterized in that
The gasoline cold start fuel injector device be configured to by fuel injector spout along the manifold axial direction into the manifold
Injected petrol；
The methanol fuel injector is configured to spray first into the manifold along the axial direction of the manifold by fuel injector spout
Alcohol.
4. methanol engine according to claim 2 or 3, which is characterized in that the fuel feed system is configured to basis
The temperature of engine coolant controls the methanol fuel injector or the gasoline cold start fuel injector device alternatively into the manifold
Spray fuel.
5. methanol engine according to claim 4, which is characterized in that
The fuel feed system is configured to control the vapour when the temperature of the engine coolant is lower than preset temperature
Oily cold start fuel injector device into the manifold injected petrol to realize methanol engine cold start-up.
6. methanol engine according to claim 5, which is characterized in that
The preset temperature is 15 DEG C -25 DEG C.
7. methanol engine according to claim 1, which is characterized in that
The gas handling system further includes exhaust gas recycling EGR mixer and electronic throttle, and the EGR mixer includes one and goes out
Port and two air inlets, wherein the gas outlet is connected with the air inlet of the air inlet pressure stabilizing cavity, an air inlet and institute
It states electronic throttle to be connected, another air inlet is connected to exhaust gas recirculation circuit.
8. methanol engine according to claim 1, which is characterized in that further include
Crankcase ventilation system, for handling the gas blowby in crankcase to balance the pressure in the crankcase.
9. methanol engine according to claim 8, which is characterized in that
The crankcase ventilation system is closed crankcase ventilation system；
The closed crankcase ventilation system includes air inlet pipe, gs-oil separator, escape pipe and oil return pipe；Wherein, the outlet
Pipe branches into the first escape pipe and the second escape pipe, after first escape pipe is connected to air cleaner, second escape pipe
It is connected with the air inlet stable cavity, is in series with check valve on second escape pipe.
10. a kind of vehicle, which is characterized in that the vehicle includes methanol engine as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810835641.7A CN108979925A (en) | 2018-07-26 | 2018-07-26 | Methanol engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810835641.7A CN108979925A (en) | 2018-07-26 | 2018-07-26 | Methanol engine and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN108979925A true CN108979925A (en) | 2018-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810835641.7A Pending CN108979925A (en) | 2018-07-26 | 2018-07-26 | Methanol engine and vehicle |
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|---|---|---|---|---|
| CN109828101A (en) * | 2019-01-23 | 2019-05-31 | 湖南吉利汽车部件有限公司 | A kind of machine oil adaptive detection method and device |
| CN110043362A (en) * | 2019-04-01 | 2019-07-23 | 浙江吉利新能源商用车集团有限公司 | A kind of cold starting system for methanol vehicle |
| CN110242413A (en) * | 2019-07-12 | 2019-09-17 | 南京盖驰动力科技有限公司 | A kind of engine air inlet tube gasoline low-pressure fuel injection and methanol high-pressure injection system |
| CN112855359A (en) * | 2021-01-13 | 2021-05-28 | 浙江吉利控股集团有限公司 | Engine control method and device, vehicle and computer storage medium |
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