CN106536913B - Method for the pressure oscillation in the fuel filtration in the fuel system and mitigation fuel system of internal combustion engine - Google Patents
Method for the pressure oscillation in the fuel filtration in the fuel system and mitigation fuel system of internal combustion engine Download PDFInfo
- Publication number
- CN106536913B CN106536913B CN201580035201.8A CN201580035201A CN106536913B CN 106536913 B CN106536913 B CN 106536913B CN 201580035201 A CN201580035201 A CN 201580035201A CN 106536913 B CN106536913 B CN 106536913B
- Authority
- CN
- China
- Prior art keywords
- fuel
- filtration
- low
- control valve
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
- F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
- F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/065—Introducing corrections for particular operating conditions for engine starting or warming up for starting at hot start or restart
-
- 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
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
- F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
- F02D41/3854—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped with elements in the low pressure part, e.g. low pressure pump
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
- F02M37/0029—Pressure regulator in the low pressure fuel system
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0041—Means for damping pressure pulsations
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/06—Feeding by means of driven pumps mechanically driven
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/18—Feeding by means of driven pumps characterised by provision of main and auxiliary pumps
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/46—Filters structurally associated with pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The present invention relates to the fuel system (4) for being used for internal combustion engine (2), and the fuel system (4) includes: the first fuel reservoir (20)；Fuel filtration (12), the fuel filtration are arranged between low-lift pump (22) and high-pressure pump (14) by motor operation；And first fuel channel (24), low-lift pump (22) are arranged to fuel being supplied to fuel filtration (12) by first fuel channel.In addition, under a predetermined open and/or close gradually open and/or gradually enclosed control valve (30) be arranged in fuel filtration (12) upstream.Recirculation conduit (32) setting is in control valve upstream and low-lift pump (22) downstream, for making fuel be recycled back into low-lift pump (22) under the supply pressure of predetermined opening pressure for being more than control valve (30).Have benefited from the present invention, the risk of the main pressure fluctuation in fuel filtration (12) can reduce.The invention further relates to the methods of the pressure oscillation in the fuel filtration (12) in the internal combustion engine (2) including the fuel system (4), the vehicle (1) including the fuel system (4) and the mitigation fuel system (4).
Description
Technical field
The present invention relates to the fuel system for internal combustion engine, the internal combustion engine with the fuel system, there is the fuel
The vehicle of system and the method for the pressure oscillation in the fuel filtration in mitigation fuel system.
Background technique
Combustion engine (such as diesel engine or Otto formula engine) is used for current a plurality of types of equipment and vehicle
In, such as in heavy goods stock, in such as truck or bus, passenger car, power ship, passenger steamer, ferry boat and cargo ship.Combustion hair
Motivation is also used in industrial engine and/or engine-driven industrial robot, power-equipment is (such as including diesel-driven generator
Power plant) in and locomotive in.
Combustion engine can be driven by diesel oil, gasoline or ethyl alcohol or other kinds of bio-fuel.Such hair
Fuel is transported to the spraying system of internal combustion engine equipped with fuel system by motivation from one or more fuel reservoirs.Fuel system
Including can mechanically be driven by internal combustion engine or by motor-driven one or more petrolifts.Petrolift generates
To deliver fuel into the spraying system of internal combustion engine, the spraying system supplies fuel to the combustion of internal combustion engine for fuel stream and pressure
Burn room.
Fuel system further includes fuel filter, to filter fuel before the spraying system that fuel reaches internal combustion engine.It is interior
Combustion engine and its spraying system are sensitive to impurity and may become negatively affected in the case where fuel excessively pollutes.Impurity can be with
Mean solid particle, gas or liquid.
Certain combustion engines or hybrid power engine can close when vehicle stops, for example at red light or traffic congestion
Middle closing, it is therefore an objective to reduce fuel consumption and exhaust emissions.This function makes internal combustion engine frequent starting and stopping.Work as internal combustion engine
When closing, the pressure in fuel system sharply declines, because fuel no longer needs to be fed into internal combustion engine.On the other hand, internal combustion
Each starting needs of machine set up rapidly pressure in fuel system, so that fuel is sufficiently fed internal combustion engine rapidly.Cause
This, frequent starting/stopping of internal combustion engine leads to the frequent pressure oscillation in fuel system, therefore also results in fuel filter
Frequent pressure oscillation.It during the starting of internal combustion engine, is formed by pressure and increases in fuel system, fuel is under high pressure
It is supplied via fuel filter.High pressure causes the impurity in fuel that may be forced through the risk of filter, this may be influenced
The function of spraying system and internal combustion engine.Even if only a small amount of impurity reaches internal combustion engine, it is also possible to which generating internal combustion engine possibly can not lead to
Cross the consequence of fuel driven.Additionally, there are fuel filters may be due to the pressure oscillation and high pressure that often occur in systems
And risk that is impaired or disintegrating.The risk that impurity may reach the risk of internal combustion engine and fuel filter is damaged is with fuel mistake
Filter by affected by high frequency and increase.Therefore desirable for mitigating the pressure oscillation in fuel filter.
It is proposed different method and systems to control the pressure in fuel system in the prior art.US
2013047965 show fuel system, and wherein tail-off still open and continue to supply fuel by petrolift.Fuel stream and
Pressure can be controlled in vehicle cold-start by means of check-valves and excess pressure valve under specific circumstances, for example.However, the document
Not the problem of not referring to the pressure oscillation in repeated priming and stopping in fuel filter.
Although there is the solution of the prior art in the art, there are still the need of further exploitation fuel system
It asks, the fuel system helps to mitigate the pressure oscillation in the fuel filter in the fuel system for internal combustion engine, and
Risk minimization of the fuel system to which fuel filter and internal combustion engine will be made to be damaged.
Summary of the invention
The purpose of the present invention is realize that the fuel system for being used for internal combustion engine, the fuel system mitigate the combustion in fuel system
Expect the pressure oscillation in filter.
The present invention also aims to realize the fuel system for internal combustion engine, the fuel system is by the behaviour in internal combustion engine
Make the risk minimization interrupted.
It is another object of the present invention to realize that the fuel system for internal combustion engine, the fuel system will be in fuel system
The risk minimization of operation disruption in fuel filter.
The present invention also aims to realize the fuel system for internal combustion engine, the fuel system is compact and saves empty
Between.
It is another object of the present invention to realize the pressure oscillation in the fuel filter in the fuel system for mitigating internal combustion engine
Method.These purposes using the fuel system that hereinafter limits and hereinafter in the mitigation fuel system that limits
The method of pressure oscillation in fuel filter is realized.
According to the present invention, these purposes utilize the fuel system for internal combustion engine to realize that the fuel system includes: first
Fuel reservoir；Fuel filtration, the fuel filtration are arranged between low-lift pump and high-pressure pump by motor operation；
And first fuel channel, low-lift pump are arranged to fuel being supplied to fuel filtration by first fuel channel.?
Under predetermined pressure open and/or close gradually open and/or gradually enclosed control valve be arranged in fuel filtration upstream.Recirculation pipe
Road is arranged in control valve upstream and low-lift pump downstream, for making fuel be recycled back into low-lift pump, the confession under supply pressure
To the predetermined opening pressure that pressure is more than in control valve.
The invention further relates to the internal combustion engines and vehicle that include the system being described above.
The present invention relates to the pressures in the fuel filtration in the fuel system mitigated for internal combustion engine according to another aspect,
The method of fluctuation, the fuel system include: the first fuel reservoir；Fuel filtration is arranged in low-lift pump and high pressure
Between pump；And first fuel channel, low-lift pump are arranged to fuel being supplied to fuel filter by first fuel channel
Device.It the described method comprises the following steps:
A) control valve is arranged in fuel filtration upstream and low-lift pump downstream, leads to fuel filtration to control
Fuel stream；
B) control valve is controlled, so that the control valve is gradually opened under a predetermined；And
C) make a part of fuel be more than for control valve predetermined opening pressure pressure under via recirculation conduit again
It is circulated back to low-lift pump.
It is described in the specific detailed description of the invention of supplementary features and advantage of the invention hereinafter.
Specific detailed description of the invention
The present invention is described hereinafter with reference to the fuel system and method that are generally described above.
When internal combustion engine is closed, no fuel requirement is fed into internal combustion engine.Pass through the engine speed operation of internal combustion engine
Pump internal combustion engine close when be also turned off.As a result, low-lift pump and high-pressure pump be turned off and fuel system in pressure under
Drop.It when internal combustion engine is again started up, needs to set up pressure rapidly in fuel system, to allow to be sufficiently fed fuel
Internal combustion engine.Next low-lift pump must realize high engine speed or control towards high engine speed, so as to using filling
Point high pressure supplies it to pass through fuel filtration.Internal combustion engine starts every time, and such pressure oscillation occurs as soon as, the pressure
Fluctuation is also known as compression shock or pulsation.Such high pressure may cause impurity be forced through fuel filtration and into
One step is pushed to internal combustion engine, this may cause the shutdown of internal combustion engine.In addition, fuel is fed through fuel filtration institute benefit
High pressure may damage fuel filtration.If internal combustion engine is frequently turned off and on, fuel filtration can more frequency
Numerous these frequent pressure oscillations by affected by high and fuel filtration make fuel filtration to increase
It may cause the risk of operation disruption at the risk and impurity of damage.
According to the present invention, it is eased off the pressure fluctuation using system and method, wherein involute control valve is arranged in fuel filter
Device upstream and low-lift pump downstream, to control the fuel stream for leading to fuel filtration.Control valve is opened under a predetermined
And/or it closes.In this way, fuel supply can be controlled such that control valve until internal combustion engine and/or the hair of low-lift pump
It is just opened when motivation speed has been more than particular value, so that fuel pressure or flowing are in appropriate level.Pressure sensor can be with
It is arranged in control valve downstream and/or control valve.Pressure sensor may be coupled to the control device in vehicle, the opening of valve
And/or it closes and can be controlled by control device.
Recirculation conduit is arranged in control valve upstream and low-lift pump downstream, for being recirculated back to fuel under supply pressure
To low-lift pump, the supply pressure is more than the predetermined opening pressure in control valve.In this way, fuel is continually fed into
Fuel filtration, compression shock can be avoided in such as engine start.By way of involute control valve, pressure
Gradually increasing in power is realized in fuel filtration.Control valve can be mechanical valve or motor-driven valve.The fuel of pressurization is preferred
It always can be used in fuel filtration, control valve is also used as check-valves to work, and prevents fuel from flowing back into low-lift pump.
According to the present invention, low-lift pump preferably mechanically operates.By setting by internal combustion engine and especially by interior
The engine speed operation of combustion engine and the mechanical pump of control, low-lift pump are controlled in a simple manner.Low-lift pump starts to direction
Machine speed control, so that low-lift pump provides height under the high engine speed of internal combustion engine, for example when engine starts rapidly
It flows and to providing high pressure, and low flowing is provided at low engine speeds and therefore low pressure is provided.Low pressure as a result,
Pump is closed when internal combustion engine is closed.By motor operation usually with wider control room every low-lift pump in, in internal combustion engine
Starting when high flowing may further result in the high pressure in system and therefore lead to the high pressure in fuel filtration.This meaning
, fuel is under pressure influence of fluctuations in repeated priming and the stopping of internal combustion engine.By the way that the control valve being gradually opened, combustion is arranged
Material filter can continuously be pressurizeed during engine start.At the same time, a part of fuel is via recirculation conduit quilt
Low-lift pump is led back to, so that control valve is not influenced by excess pressure.In this way, it is appeared in internal combustion engine start
Pressure oscillation in fuel filtration is mitigated.Therefore, impurity may be forced through fuel filtration and cause
The risk minimization of operation disruption.In addition, fuel filtration may be damaged or be disintegrated due to big and frequent pressure oscillation
Risk minimization.
According to an aspect of the present invention, accumulator is arranged in control valve downstream and connect with fuel filtration.It stores
The purpose of depressor is in the case where engine failure and before fuel supply is since low-lift pump by fuel filtration
Pressurization.It is constantly pressurizeed due to fuel filtration, the pressure oscillation in fuel filter is further mitigated.Pressure accumulation
Device is arranged to will combustion after stall when needing fuel being rapidly provided internal combustion engine, for example when engine is in engine start
Material is discharged into fuel filtration.The fuel of pressurization is supplied to fuel filter and is further supplied to leading to for internal combustion engine
It is next opened with the channel from accumulator.When control valve is completely open and the revolving speed of low-lift pump is according to internal combustion engine
When demand for fuel is adapted to, leads to and the channel from accumulator is closed.In turn, the pressure when internal combustion engine is closed in system is fast
It is fallen under speed, the channel for leading to accumulator opens and filled with fuel.In this way, pressure oscillation can effectively subtract
Gently.Valve gear is preferably provided at the inlet for leading to accumulator, to control the flowing led to and from accumulator.Valve can be with
Electric mode controls, as a result, the accurate control of accumulator may be implemented.The volume of accumulator can for example 0.1 to 1 liter it
Between.
According to another aspect of the present invention, fuel filtration setting imaging accumulator works like that.It means that pressurization
Fuel can remain in fuel filtration.In this way it is possible to obtain simple and compact fuel system.
Control valve is preferably able to control in a manner of electric.In this manner it is achieved that accurate and rapidly control.Utilize electricity
Dynamic control, for example, be easy to change the control room gradually opened and/or gradually closed for control valve every.Control valve can also be arranged to
Control device is connected with communication bus, therefore the control of control valve may be coupled to the other control system of vehicle.
Be respectively used to send and receive signal communication bus can be the connector being made of one or more cables or
Wireless connections, the connector can be CAN bus (controller zone network), (system towards media passes MOST bus
It is defeated) or certain other kinds of bus structures.Control device can be the independent control device for control valve, or alternatively,
Control device can be made of the logic circuit in the control device for internal combustion engine.The other control systems of vehicle can also be anti-
Come over to be connected to same communication bus, such as CAN bus.Recirculation conduit may include the inlet that recirculation conduit is arranged in
Valve gear.In this way, the fuel stream for recycling and therefore leading to control valve of fuel can be towards desired rank control
System.The valve can be mechanical valve or motor-driven valve.
Control valve can be made of the governor of low-lift pump, the governor from low-lift pump be moved to the first fuel channel,
In the inlet for leading to fuel filtration.In this way it is possible to the quantity of the component in system be minimized, while can
To obtain the accurate control of fuel stream.Control valve can be the mechanical valve with return valve function, such as diaphragm valve.Control valve is also
It can be the valve that can be controlled in a manner of electric, such as solenoid valve or any kind of motor-driven valve.
The invention further relates to the internal combustion engines and vehicle that include the system being described above.
The invention further relates to the sides of the pressure oscillation in the fuel filtration in the fuel system mitigated for internal combustion engine
Method, the fuel system include: the first fuel reservoir；Fuel filtration is arranged between low-lift pump and high-pressure pump；And
First fuel channel, low-lift pump are arranged to fuel being supplied to fuel filtration by first fuel channel, wherein institute
State method the following steps are included:
A) control valve is arranged in fuel filtration upstream and low-lift pump downstream, leads to fuel filtration to control
Fuel stream；
B) control valve is controlled, so that it is gradually opened under a predetermined；And
C) make a part of fuel be more than for control valve predetermined opening pressure pressure under via recirculation conduit again
It is circulated back to low-lift pump.
In step (b), control valve is controlled, so that it is opened under a predetermined.Control valve being capable of the control in a manner of electric
System, the opening of valve and/or closing can be adapted to current driving condition.Step (b) can further include via control device with electricity side
Formula controls control valve, and the control device is connected to control valve via communication bus.
Step c) may include configuring valve gear in the inlet for leading to recirculation conduit.In this way it is possible into
One step controls fuel stream, and obtains more precise control.
The method can be further comprising the steps of:
D) accumulator is configured in the inlet for leading to fuel filtration, so that fuel filtration pressurizes.With this
Kind mode, fuel filtration may be arranged so as to be added when it is when low-lift pump is shut down, for example in engine breakdown
Pressure.
Fuel filtration preferably includes filter housing, and filter element is arranged in the filter housing.Work as internal combustion
When machine is in operation, fuel is supplied to filter housing via the first fuel channel from low-lift pump with specified pressure, next fires
Material is across filter element and impurity is filtered.Then, fuel is further supplied to the injection of high-pressure pump and internal combustion engine
System.Since a part of fuel is passed through via involute control valve, and since a part of fuel can also pass through recirculation conduit,
Until control valve fully opens, specified pressure will be maintained in fuel filtration, any usually in internal combustion without occurring
The main pressure impact and pressure oscillation occurred when machine starts and stops.Stress on filter element is to minimize.
Pressure inside filter housing can be increasing continuously by way of the progressively closing off of control valve.Filter housing
The accumulator for serving as pressurization can be set into.When internal combustion engine is again started up, the fuel of pressurization will be present in outside filter
In shell, therefore fuel can reach rapidly internal combustion engine, and realize the rapid and efficient starting of internal combustion engine.In addition, control valve
With the pressure in filter housing make the pressure difference occurred in internal combustion engine start minimize, this will make fuel filtration by
The risk of damage and since pressure sharply increases the risk minimization for causing impurity to be forced through filter element.
According to an aspect of the present invention, fuel system includes the second fuel reservoir.First fuel reservoir, which is suitable for adaptation, to be made
It obtains it and possesses the smaller volume compared with the second fuel reservoir.This design allows the first fuel reservoir small volume, and described the
One fuel reservoir is easier to that the inside chassis with the confined space is arranged in.The fuel system of small size is achieved as a result,.
Delivery pump is preferably provided to supply fuel to the first fuel reservoir.Delivery pump is suitable for fuel from the second fuel reservoir
The first fuel reservoir is further supplied to via the second fuel channel.Prefilter is preferably provided at delivery pump downstream and primary low
Pump upstream.The fuel of low-lift pump is reached to by pre-filtering, this make low-lift pump be protected against in a manner of advanced impurity into
Enter, this reduces the risk of the operation disruption in low-lift pump.Delivery pump preferably passes through motor operation.In this way, more efficient and
The fuel supply for leading to the first fuel reservoir of flexible modulation is achieved.
Low-lift pump is suitable for being arranged in the first fuel reservoir.In this way, low-lift pump is protected from affected by environment, combustion
Material is able to the natural cooling in the first fuel reservoir.Alternatively, delivery pump and prefilter are additionally arranged in the first fuel reservoir
Portion.
Fuel return line is suitable for being arranged to connect with the high-pressure system of the first fuel reservoir and fuel system.Pressurization
Warm fuel can return to the first fuel reservoir in this way, rather than be transported to the combustion chamber of internal combustion engine.Warm fuel can be from
And the cold fuel in fuel reservoir is heated, and reduce risk paraffinized during operation in this way.
It is illustrated in the specific descriptions of the exemplary embodiments of the present invention of other advantages of the invention hereinafter.
Detailed description of the invention
It is the description referring to attached drawing for the preferred embodiment of the present invention below as embodiment, in which:
Fig. 1 shows the schematic side elevation of vehicle, and the vehicle includes the fuel system according to the present invention for internal combustion engine
System,
Fig. 2 shows the Mating graphs for fuel system according to the present invention, and
Fig. 3 shows the stream for mitigating the method for the pressure oscillation in the fuel filtration in fuel system according to the present invention
Cheng Tu.
Specific embodiment
Fig. 1 shows the schematic side elevation of vehicle 1, and the vehicle includes the fuel for internal combustion engine 2 according to the present invention
System 4.Internal combustion engine 2 is connected to gearbox 6, and the gearbox is connected further to the driving wheel 8 of vehicle 1 via transmission device.
Vehicle further includes chassis 10.
Fig. 2 shows the Mating graphs for the fuel system 4 in internal combustion engine 2 according to the present invention.Fuel system 4 includes multiple
Component, in the multiple component, fuel filtration 12, high-pressure pump 14, the accumulator for taking so-called 16 form of common rail, with
And (internal combustion engine 2 is opened up in Fig. 1 in internal combustion engine 2 for the setting of spraying system 18 for schematically taking fuel injector mode to show
Show).Alternatively, common rail 16 can be substituted by the spraying system 18 of other forms, such as piezoelectric type or modular spraying system.It is high
Press pump 14, common rail 16 and spraying system 18 constitute the component in the high-pressure system 19 of fuel system 4.Fuel system 4 further includes
One fuel reservoir 20, low-lift pump 22, the first fuel channel 24, low-lift pump 22 are arranged to fuel passing through first fuel channel
It is supplied to fuel filtration 12.Control device (not shown) can be set to be connect with multiple components in fuel system 4.Control
Device, which can be set into, to be connect via CAN bus with component.
When internal combustion engine 2 is in operation, fuel is passed through the fuel mistake that downstream is arranged in by low-lift pump 22 from fuel reservoir 20
It filters device 12 to pump, and is further pumped into high-pressure pump 14, next fuel is further pumped into internal combustion by the high-pressure pump
Machine 2.
Fuel system 4 can further include multiple fuel reservoir (not shown).Delivery pump can be set into fuel from second
Fuel reservoir is supplied to the first fuel reservoir 20, and the delivery pump can be set between each storage tank (not shown).Delivery pump can
To operate by motor operation or mechanically.Second fuel reservoir can be equal to main fuel storage tank, the first fuel reservoir
The technology storage tank with the smaller volume compared with fuel reservoir can be equal to.
Fuel system 4 includes gradually opening of opening and/or close under a predetermined and/or gradually enclosed control valve 30.Control
Valve 30 is arranged in 12 upstream of fuel filtration.The setting of recirculation conduit 32 is used in 22 downstream of 30 upstream of control valve and low-lift pump
In making fuel be recycled back into low-lift pump 22 under supply pressure, the supply pressure is more than the predetermined opening pressure of control valve 30
Power.Low-lift pump 30 can be operated mechanically, and be controlled by the engine speed of internal combustion engine 2.Low-lift pump 22 is following
It controls, and can be controlled rapidly towards high engine speed in such as engine start towards the engine speed of internal combustion engine 2
System pump.Low-lift pump 22 is closed when internal combustion engine is closed as a result,.Involute control valve 30 allows fuel to gradually pass through, therefore fuel mistake
Filter device 12 can continuously pressurize in engine start.At the same time, a part of fuel is guided via recirculation conduit 32
Low-lift pump 22 is returned to, so that control valve 30 is not influenced by excess pressure.In this way, in internal combustion engine start in fuel
The pressure oscillation occurred in filter device 12 is mitigated.Therefore, impurity may be forced through fuel filtration 12 and
Cause the risk minimization of operation disruption.In addition, fuel filtration 12 may be damaged due to big and frequent pressure oscillation
Or the risk minimization disintegrated.
Fuel filtration 12 includes filter housing 50, and filter element 52 is arranged in the filter housing, comes from
The fuel of first fuel reservoir 20 is filtered by the filter element.Filter housing 50 can in its own as accumulator that
Sample work or accumulator 40 can be set in control valve downstream and connect with filter housing 50, thus and filter for installation
12 connections.The inlet for leading to fuel filtration 12 is arranged in accumulator 40, so as to for example in engine failure by fuel
Filter device 12 pressurizes.30 purpose of accumulator is before fuel supply is since low-lift pump 22 by fuel filtration 12
Pressurization.Since fuel filtration 12 is constantly pressurizeed, the pressure oscillation in fuel filter 52 is further mitigated.It stores
Depressor 40 is arranged to when needing fuel being rapidly provided internal combustion engine, for example when engine is in engine start after stall
Release fuel into fuel filtration 12.The fuel of pressurization is supplied to fuel filter 52 and is further supplied to internal combustion
Machine 2 lead to and next the access from accumulator 40 is opened.When control valve 30 be completely open and low-lift pump 22 turn
When speed is adapted to according to the demand for fuel of internal combustion engine 2, lead to and the path blockade from accumulator 40.In turn, in internal combustion engine 2
Under rapid pressure drop when closing in system 4, the access for leading to accumulator 40 is opened and filled with fuel.With this side
Formula, can effectively ease off the pressure fluctuation.Valve gear (not shown) is preferably provided at the inlet for leading to accumulator, to control
Lead to and the flowing from accumulator 40.Valve can be controlled in a manner of electric, as a result, the accurate control of accumulator 40 may be implemented
System.The volume of accumulator 40 can be for example between 0.1 to 1 liter.
In addition, fuel system 4 includes fuel return line 60, the high-pressure system 19 of the warm fuel of pressurization from fuel system 4
The first fuel reservoir 20 is returned to by the fuel return line.
Fig. 3 shows the method for mitigating the pressure oscillation in the fuel filtration 12 in fuel system 4 according to the present invention
Flow chart.Fuel system 4 can be adapted for described in Fig. 2.It according to the method for the present invention include: that step a) will be controlled
Valve 30 processed is arranged in 22 downstream of 12 upstream of fuel filtration and low-lift pump, to control the fuel for leading to fuel filtration 12
Stream and step b) control control valve 30, so that it is gradually opened under a predetermined and step c) makes a part of fuel exist
Low-lift pump 22 is recycled back into via recirculation conduit 32 more than under the pressure for the predetermined opening pressure of control valve 30.
Since control valve 30 is gradually opened, the compression shock in fuel filtration 12 is mitigated.The method is also suitable
Accumulator is configured in the inlet of fuel filtration so that fuel filtration to pressurize in including step d).
By setting filter housing 50 so that it works as accumulator, or by by accumulator 40 be arranged to
Fuel filtration 12 connects, and the state when internal combustion engine 2 is closed and the pressure difference between the state when internal combustion engine 2 starts obtain
To reduce.The pressure oscillation in fuel filtration 12 is mitigated as a result,.If internal combustion engine 2 is over time, become again
Starting, the then fuel to pressurize can be used in fuel filtration 12, and the rapid and efficient starting of internal combustion engine 2 may be implemented.
Hereinbefore defined component and feature in the context of the present invention can defined different embodiments it
Between combine.
Claims (15)
1. being used for the fuel system (4) of internal combustion engine (2), the fuel system (4) includes: the first fuel reservoir (20)；Fuel mistake
It filters device (12), the fuel filtration is arranged between low-lift pump (22) and high-pressure pump (14)；And first fuel channel
(24), low-lift pump (22) is arranged to fuel being supplied to fuel filtration (12), feature by first fuel channel
Be, under a predetermined open and/or close gradually open and/or gradually enclosed control valve (30) be arranged in fuel filtration
(12) upstream, wherein recirculation conduit (32) is arranged in control valve (30) upstream and low-lift pump (22) downstream, for making fuel exist
It is recycled back under supply pressure low-lift pump (22), the supply pressure is more than the predetermined opening pressure in control valve (30).
2. fuel system according to claim 1, which is characterized in that low-lift pump (22) passes through the engine of internal combustion engine (2)
Speed is mechanically operated and is controlled.
3. fuel system according to claim 1 or 2, which is characterized in that accumulator (40) is arranged under control valve (30)
It swims and is connect with fuel filtration (12).
4. fuel system according to claim 1 or 2, which is characterized in that accumulator (40) is being led in valve gear setting
Inlet.
5. fuel system according to claim 1 or 2, which is characterized in that fuel filtration (12) setting imaging pressure accumulation
Device works like that.
6. fuel system according to claim 1 or 2, which is characterized in that control valve (30) can be controlled in a manner of electric.
7. fuel system according to claim 6, which is characterized in that control valve (30) is arranged to and control device and communication
Bus connection.
8. fuel system according to claim 1 or 2, which is characterized in that recirculation conduit (32) includes that setting is following again
The valve gear of the inlet in endless tube road (32).
9. fuel system according to claim 1 or 2, which is characterized in that control valve (30) is the speed regulation of low-lift pump (22)
Device, the governor are moved to the first fuel channel (24), in leading to fuel filtration (12) from low-lift pump (22)
Inlet.
10. combustion engine, which is characterized in that the combustion engine includes according to claim 1 to 9
Fuel system (4).
11. vehicle (1), which is characterized in that the vehicle includes fuel system according to claim 1 to 9
(4)。
12. mitigate the method for the pressure oscillation in the fuel filtration (12) in the fuel system (4) for internal combustion engine (2),
The fuel system (4) includes: the first fuel reservoir (20)；Fuel filtration (12), the fuel filtration setting exist
Between low-lift pump (22) and high-pressure pump (14)；First fuel channel (24), low-lift pump (22) are arranged to fuel via described
One fuel channel is supplied to fuel filtration (12), the method comprise the steps that
A) control valve (30) are arranged in fuel filtration (12) upstream and low-lift pump (22) downstream, lead to fuel to control
The fuel stream of filter device (12)；
B) control valve (30) are controlled, so that the control valve is gradually opened under a predetermined；And
C) make a part of fuel under the pressure more than the predetermined opening pressure for control valve (30) via recirculation conduit
(32) low-lift pump (22) are recycled back into.
13. according to the method for claim 12, wherein step (b) further includes controlling control in a manner of electric via control device
Valve (30), the control device are connected to control valve (30) via communication bus.
14. method according to claim 12 or 13, wherein step c) includes that recirculation pipe is being led in valve gear configuration
The inlet in road (32).
It further include that accumulator (40) configuration is being led to fuel mistake by step d) 15. method according to claim 12 or 13
The inlet of device (12) is filtered, so that fuel filtration (12) pressurize.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1450877-4 | 2014-07-08 | ||
| SE1450877A SE540028C2 (en) | 2014-07-08 | 2014-07-08 | Combustion engine fuel system, internal combustion engine with such a fuel system, vehicles with such a fuel system and a method for dampening pressure fluctuations of a fuel filter device in a fuel system |
| PCT/SE2015/050682 WO2016007067A1 (en) | 2014-07-08 | 2015-06-12 | Fuel system for internal combustion engine and a method to lessen pressure fluctuations in a fuel filter device in a fuel system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106536913A CN106536913A (en) | 2017-03-22 |
| CN106536913B true CN106536913B (en) | 2019-07-12 |
Family
ID=55064562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580035201.8A Expired - Fee Related CN106536913B (en) | 2014-07-08 | 2015-06-12 | Method for the pressure oscillation in the fuel filtration in the fuel system and mitigation fuel system of internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3167179A4 (en) |
| CN (1) | CN106536913B (en) |
| SE (1) | SE540028C2 (en) |
| WO (1) | WO2016007067A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102692296B1 (en) * | 2019-10-25 | 2024-08-05 | 현대자동차주식회사 | Integrated fuel filter device for vehicle |
| CN114592995A (en) * | 2020-11-20 | 2022-06-07 | 康明斯公司 | Fuel pump apparatus, system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002063158A1 (en) * | 2001-02-08 | 2002-08-15 | Robert Bosch Gmbh | Fuel system, method for operating the fuel system, computer programme and control device and/or regulator for controlling said system |
| DE10149412C1 (en) * | 2001-10-06 | 2003-02-06 | Bosch Gmbh Robert | Device for deadening compressive pulsations in a fluid system like a fuel system for an ICE has a casing, a hollow area with an intermittent working area linked to a flow path for a liquid system and intermittent preload devices for gas. |
| DE102010064172A1 (en) * | 2010-12-27 | 2012-06-28 | Robert Bosch Gmbh | Hydraulic pressure intensifier |
| DE102011084675A1 (en) * | 2011-10-18 | 2013-04-18 | Robert Bosch Gmbh | Low-pressure system for common-rail injection system, has balancing volume formed between feed pump and fuel filter and limited by set of spring loaded input pistons, where pistons are switched parallel to change of balancing volume |
| WO2014085758A1 (en) * | 2012-11-30 | 2014-06-05 | Thermo King Corporation | Systems and methods to regulate a pressure in a fuel delivery system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10006622A1 (en) * | 2000-02-15 | 2001-08-16 | Bosch Gmbh Robert | Device for supplying a motor vehicle's internal combustion engine with fuel has a feeder unit driven by an electric motor to feed fuel from a reservoir to an internal combustion engine, also pressure-limiting and reverse flow valves. |
| US7845162B2 (en) * | 2005-06-20 | 2010-12-07 | Cummins Filtration Ip, Inc | Apparatus, system, and method for diverting fluid |
| US7527043B2 (en) * | 2007-07-05 | 2009-05-05 | Caterpillar Inc. | Liquid fuel system with anti-drainback valve and engine using same |
| JP4930521B2 (en) * | 2009-02-02 | 2012-05-16 | 株式会社デンソー | Fuel supply device |
| US9097217B2 (en) * | 2011-08-31 | 2015-08-04 | Gm Global Technology Operations. Llc | Propulsion systems and modules for vehicles |
-
2014
- 2014-07-08 SE SE1450877A patent/SE540028C2/en not_active IP Right Cessation
-
2015
- 2015-06-12 WO PCT/SE2015/050682 patent/WO2016007067A1/en active Application Filing
- 2015-06-12 EP EP15818473.9A patent/EP3167179A4/en not_active Withdrawn
- 2015-06-12 CN CN201580035201.8A patent/CN106536913B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002063158A1 (en) * | 2001-02-08 | 2002-08-15 | Robert Bosch Gmbh | Fuel system, method for operating the fuel system, computer programme and control device and/or regulator for controlling said system |
| DE10149412C1 (en) * | 2001-10-06 | 2003-02-06 | Bosch Gmbh Robert | Device for deadening compressive pulsations in a fluid system like a fuel system for an ICE has a casing, a hollow area with an intermittent working area linked to a flow path for a liquid system and intermittent preload devices for gas. |
| DE102010064172A1 (en) * | 2010-12-27 | 2012-06-28 | Robert Bosch Gmbh | Hydraulic pressure intensifier |
| DE102011084675A1 (en) * | 2011-10-18 | 2013-04-18 | Robert Bosch Gmbh | Low-pressure system for common-rail injection system, has balancing volume formed between feed pump and fuel filter and limited by set of spring loaded input pistons, where pistons are switched parallel to change of balancing volume |
| WO2014085758A1 (en) * | 2012-11-30 | 2014-06-05 | Thermo King Corporation | Systems and methods to regulate a pressure in a fuel delivery system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3167179A4 (en) | 2017-12-06 |
| WO2016007067A1 (en) | 2016-01-14 |
| SE1450877A1 (en) | 2016-01-09 |
| SE540028C2 (en) | 2018-02-27 |
| EP3167179A1 (en) | 2017-05-17 |
| CN106536913A (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6207731B2 (en) | Fuel supply system for internal combustion engine | |
| US8651089B2 (en) | Injection system for an internal combustion engine | |
| US20070186877A1 (en) | Fuel injection apparatus for an internal combustion engine | |
| EP2034168A1 (en) | Diesel engine for dimethyl ether | |
| JP2002098019A (en) | Fuel supply system | |
| US20140331974A1 (en) | Modular Low Pressure Fuel System with Filtration | |
| US7395814B1 (en) | Electronic voltage regulation for a marine returnless fuel system | |
| KR20100087734A (en) | Fuel injection system for an internal combustion engine, comprising a hydrocarbon injector | |
| JP4632197B2 (en) | Fuel supply system for diesel engine vehicles to reduce fuel pressure loss | |
| DE102011050791A1 (en) | A pressure regulating device | |
| CN106536913B (en) | Method for the pressure oscillation in the fuel filtration in the fuel system and mitigation fuel system of internal combustion engine | |
| US20160138537A1 (en) | Fuel delivery system with partial pressure relief valve on the drive line of a suction jet pump | |
| US9957940B2 (en) | Fluid conditioning module | |
| CN106662026A (en) | Fuel system for internal combustion engine and a method to lessen pressure fluctuations in a fuel filter device in a fuel system | |
| CN102770658A (en) | Fuel injection device with quantity difference control for an electric pre-supply pump | |
| KR100937979B1 (en) | Fuel adjustment and filtering device for a high-pressure pump | |
| DE102020206494A1 (en) | Fuel pump for a liquid fuel-water injection system of a motor vehicle | |
| SE542071C2 (en) | Fuel system for an internal combustion engine and method of operating fuel system | |
| US10465577B2 (en) | Fuel supply device for engine injection and exhaust-gas after treatment | |
| GB2589364A (en) | A method of controlling a fluid delivery system | |
| EP2992203B1 (en) | Fuel system for combustion engine | |
| US20190093612A1 (en) | Fuel system for an internal combustion engine and a method to increase the vaporization temperature of a fuel used in a fuel system | |
| US20120204834A1 (en) | Injection System for an Internal Combustion Engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190712 Termination date: 20200612 |