CN110094263A - A kind of engine, control method and device - Google Patents
A kind of engine, control method and device Download PDFInfo
- Publication number
- CN110094263A CN110094263A CN201910583521.7A CN201910583521A CN110094263A CN 110094263 A CN110094263 A CN 110094263A CN 201910583521 A CN201910583521 A CN 201910583521A CN 110094263 A CN110094263 A CN 110094263A
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- Prior art keywords
- cylinder
- control valve
- engine
- disconnected
- control
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Classifications
-
- 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/06—Cutting-out cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/02—Cutting-out
-
- 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
- F02D41/008—Controlling each cylinder individually
- F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
-
- 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
- F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
-
- 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
- F02D41/3005—Details not otherwise provided for
-
- 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
- Y02T10/40—Engine management systems
Abstract
Engine provided by the invention, control method and device, applied to automobile technical field, the engine is made of whole cylinders of engine disconnected cylinder cylinder group and full-time cylinder group, first control valve is set on engine intake manifold, for controlling the air inlet of disconnected cylinder cylinder group, is additionally provided with circulation line, circulation line is used to be connected to inlet manifold and second control valve in the first control valve downstream, meanwhile second control valve be set to exhaust main, for controlling the circulating path of engine exhaust.Controller is connected with the first control valve and the second control valve respectively, after obtaining disconnected cylinder instruction, disconnected cylinder cylinder group is controlled to stop working, full-time cylinder group output demand power is controlled simultaneously, the technical program is promoted by the cylinder that breaks during the realization of delivery temperature, without changing the internal structure of engine, and control logic is relatively simple, can effectively shorten the R&D cycle for having the engine of disconnected cylinder function.
Description
Technical field
The invention belongs to automobile technical field more particularly to a kind of engines, control method and device.
Background technique
Engine exhaust temperature has direct and significant influence, engine row to the gas exhaust treatment effect of after-treatment system
Temperature degree is higher, and often the gas exhaust treatment effect of after-treatment system is better.And it is transported in engine cold-start and running on the lower load
When row, delivery temperature is often difficult to meet the needs of after-treatment system efficient operation, causes vehicle emission performance not good enough.
Engine breaks cylinder, is a kind of effective raising engine exhaust temperature, and then improves after-treatment system exhaust
The method for the treatment of effect.Specifically, control engine portion sub-cylinder stops when engine cold-start or running on the lower load are run
Work increases the distributive value and air inflow of remaining cylinder, whole demand powers is provided by remaining cylinder, by improving remaining gas
The mode of cylinder working load improves engine exhaust temperature.
In the prior art, be mostly it is individually designed by carrying out to engine interior structure, such as camshaft and rocker arm,
And targetedly engine control logic is provided and realizes that engine breaks cylinder function, this implementation is needed to engine and right
The control logic answered carries out brand-new design, and the research and development of products period is long.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of engine, control method and device, not in engine
On the basis of portion's structure is adjusted, realizes the disconnected cylinder function of engine, shortens the research and development of products period, concrete scheme is as follows:
In a first aspect, the present invention provides a kind of engine, comprising: multiple cylinders, inlet manifold, exhaust main, circulation line,
One control valve, the second control valve and controller, the cylinder are divided into disconnected cylinder cylinder group and full-time cylinder group, and the disconnected cylinder cylinder group
Including at least a cylinder, wherein
Each cylinder is connected by corresponding inlet manifold with the inlet manifold respectively in the engine, and is led to respectively
Corresponding exhaust manifold is crossed to be connected with the exhaust main；
First control valve is set on the inlet manifold between the disconnected cylinder cylinder group and the full-time cylinder group, it is described
First control valve is used to close the intake channel of the disconnected cylinder cylinder group in disconnected cylinder, or, opening the disconnected cylinder cylinder in non-disconnected cylinder
The intake channel of group；
One end of the circulation line is connected to the inlet manifold for being located at first control valve downstream, the other end and described second
Control valve connection；
Second control valve is set on the exhaust main between the disconnected cylinder cylinder group and the full-time cylinder group, it is described
Second control valve is used to be connected to the exhaust main of second control valve upstream by the circulation line in disconnected cylinder and be located at
The inlet manifold in first control valve downstream, or, being connected to second control valve upstream and second control in non-disconnected cylinder
The exhaust main in valve downstream processed；
The controller is connected with first control valve and second control valve respectively, is used for after obtaining disconnected cylinder instruction,
It controls the disconnected cylinder cylinder group to stop working, and controls the full-time cylinder group output demand power.
Optionally, the controller is also used to be greater than or equal to preset temperature threshold in the delivery temperature for determining the engine
After value, controls the disconnected cylinder cylinder group and resume work, and export demand power by whole cylinders.
Optionally, second control valve includes air inlet, first row port and second exhaust port, wherein
Second control valve is serially connected with the exhaust main, the second row by the air inlet and the first row port
Port is connected to the circulation line, and passes through the circulation line and the inlet manifold's phase for being located at first control valve downstream
Connection, second control valve is used to control the air inlet in disconnected cylinder and be connected to the second exhaust port, or, in non-disconnected cylinder
When control the air inlet and be connected to the first row port.
Optionally, any one of first aspect present invention provide engine, further include, the air inlet of the inlet manifold with
Intercooler is connected；
The exhaust outlet of the exhaust main is connected with booster.
Second aspect, the present invention provide a kind of engine control, are applied to described in any one of first aspect present invention
The controller of engine, which comprises
In the case where the engine is in cold start-up or running on the lower load, disconnected cylinder instruction is generated；
It is instructed according to the disconnected cylinder, controls first control valve and close, control the second control valve connection second control
The exhaust main of valve upstream processed and the inlet manifold positioned at first control valve downstream, and,
The atomizer for closing the disconnected cylinder cylinder group controls the full-time cylinder group output demand power.
Optionally, the engine control that second aspect of the present invention provides, further includes:
Obtain the delivery temperature of the engine；
If the delivery temperature is greater than or equal to the preset temperature threshold, controls the disconnected cylinder cylinder group and resume work, and by complete
Portion's cylinder exports demand power.
Optionally, the control disconnected cylinder cylinder group is resumed work, and exports demand power by whole cylinders, comprising:
It controls first control valve to open, to restore the air inlet of the disconnected cylinder cylinder group；
Control the exhaust main that second control valve is connected to second control valve upstream and second control valve downstream；
The air inflow and distributive value of each cylinder of engine described in power control according to demand, to export demand power.
Optionally, if the delivery temperature is less than the preset temperature threshold, determine that the engine is in underload work
Condition.
Optionally, the engine control that second aspect of the present invention provides, further includes:
Obtain engine coolant temperature；
If the engine coolant temperature is lower than preset temperature threshold, determine that the engine is in cold start-up operating condition.
The third aspect, the present invention provide a kind of engine control system, comprising:
Instruction generation unit, in the case where the engine is in cold start-up or running on the lower load, generating disconnected cylinder instruction；
Control unit controls first control valve and closes, control second control valve and connect for being instructed according to the disconnected cylinder
Lead to the exhaust main of second control valve upstream and the inlet manifold positioned at first control valve downstream, and, it closes
The atomizer for closing the disconnected cylinder cylinder group controls the full-time cylinder group output demand power.
Based on the technical solution that aforementioned present invention provides, the whole of engine is made of disconnected cylinder cylinder group and full-time cylinder group
The first control valve is arranged in cylinder on engine intake manifold, for controlling the air inlet of disconnected cylinder cylinder group, is additionally provided with circulation pipe
Road, one end of circulation line are connected to the inlet manifold for being located at the first control valve downstream, and the other end is connected to the second control valve, together
When, the second control valve is set to exhaust main, can control the second control valve upstream in disconnected cylinder by second control valve
Exhaust main is connected by circulation line with the inlet manifold for being located at the first control valve downstream, and then realizes gas in disconnected cylinder cylinder group
The inside of body recycles, or, be connected to the exhaust main of the second control valve upstream and the second control valve downstream in non-disconnected cylinder, i.e., so that
Exhaust main is integrally connected to, so that disconnected cylinder cylinder group works normally.Controller is connected with the first control valve and the second control valve respectively,
And after obtaining disconnected cylinder instruction, control disconnected cylinder cylinder group and stop working, while controlling full-time cylinder group output demand power, this skill
Art scheme is promoted by the cylinder that breaks during the realization of delivery temperature, it is only necessary to add the first control valve, the second control valve and circulation pipe
Road, without changing the internal structure of engine, and control logic is relatively simple, thus, it can effectively shorten and have disconnected cylinder function
The R&D cycle of engine.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram for engine that the present patent application embodiment provides；
Fig. 2 is the structural schematic diagram for another engine that the present patent application embodiment provides；
Fig. 3 is the structural schematic diagram for another engine that the present patent application embodiment provides；
Fig. 4 is the structural schematic diagram for another engine that the present patent application embodiment provides；
Fig. 5 is a kind of flow chart for engine control that the present patent application embodiment provides；
Fig. 6 is a kind of structural block diagram for engine control system that the present patent application embodiment provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It is a kind of structural schematic diagram for engine that the present patent application embodiment provides referring to Fig. 1, Fig. 1.Referring to Fig. 1
Illustrated embodiment illustrates engine provided by the invention, and engine provided in an embodiment of the present invention includes: multiple cylinders, and complete
Portion's cylinder is divided into disconnected cylinder cylinder group and full-time cylinder group, wherein in the embodiment shown in fig. 1, disconnected cylinder cylinder group include cylinder 1,
Cylinder 2 and cylinder 3, full-time cylinder group in the embodiment shown in fig. 1, full-time cylinder group include cylinder 4, cylinder 5, with
And cylinder 6, inlet manifold 10, exhaust main 20, circulation line 30, the first control valve 40, the second control valve 50 and controller (figure
In be not shown).
Firstly the need of explanation, a cylinder is included at least in cylinder cylinder group of breaking, specifically, can be according to cylinder
The number of cylinders that disconnected cylinder cylinder group specifically includes rationally is arranged in specific facilities.Meanwhile in disconnected cylinder cylinder group and full-time cylinder group
The summation of cylinder should constitute whole cylinders of engine, i.e., in whole cylinders of engine, remove the cylinder in disconnected cylinder cylinder group, remain
Remaining cylinder is full-time cylinder group.Cylinder in full-time cylinder group is in work shape always in engine operation process
State, and the cylinder in disconnected cylinder cylinder group is idle when engine is in disconnected cylinder operating condition.
Each cylinder and inlet manifold 10 in engine provided in an embodiment of the present invention, the connection type of exhaust main 20 and existing
There is the connection type of conventional engine in technology similar, i.e., each cylinder passes through corresponding inlet manifold and air inlet respectively in engine
General pipeline 10 is connected, and is connected respectively by corresponding exhaust manifold with exhaust main 20.
First control valve 40 is serially connected with inlet manifold 10, and is set between disconnected cylinder cylinder group and full-time cylinder group,
In engine working process, the first control valve 40 is used to close the intake channel of disconnected cylinder cylinder group in disconnected cylinder, alternatively, in non-disconnected cylinder
The intake channel of the disconnected cylinder cylinder group of Shi Kaiqi.Referring to Fig. 1, the air inlet of inlet manifold 10 is connected with intercooler 60, in engine
When non-disconnected cylinder working, the first control valve 40 is opened, and inlet manifold 10 is generally in channel status, the cylinder 1 of engine to cylinder 6
Work normally；And when engine breaks cylinder working, the first control valve 40 is closed, the intake channel of cylinder 1, cylinder 2 and cylinder 3
It closes, and the cylinder 4 of full-time cylinder group, cylinder 5 and cylinder 6 are normally connected to inlet manifold 10.
One end of circulation line 30 is connected to the inlet manifold 10 for being located at 40 downstream of the first control valve, the other end and the second control
Valve 50 processed is connected to.Second control valve 50 is serially connected with exhaust main 20, and positioned opposite with the first control valve 40, that is, is similarly positioned in disconnected
Between cylinder cylinder group and full-time cylinder group.In engine working process, the second control valve 50 is used to pass through circulation in disconnected cylinder
Pipeline 30 is connected to the exhaust main 20 of 50 upstream of the second control valve and the inlet manifold 10 for being located at 40 downstream of the first control valve, or
Person is connected to the exhaust main 20 in 50 downstream of 50 upstream of the second control valve and the second control valve in non-disconnected cylinder, i.e., in non-disconnected cylinder
By the whole connection of exhaust main 20, so that the exhaust of disconnected cylinder cylinder group and full-time cylinder group can be entered by exhaust main 20
The booster 70 being connected with 20 exhaust outlet of exhaust main, is ultimately discharged into atmosphere.
It is envisioned that engine breaks when cylinder, the second control valve 50 is by the gas in cylinder 1, cylinder 2 and cylinder 3
Introduce inlet manifold 10, the control by the first control valve 40, the second control valve 50 to gas flowing path, break cylinder cylinder group in
Gas forms independent circulation path, and can continuous reciprocation cycle, and then can to avoid to engine interior camshaft, shake
The progress of the components such as arm is individually designed, and and closing normally-open to inlet and outlet door is avoided to bring a negative impact.
Specifically, the second control valve 50 includes air inlet, first row port and second exhaust port, the second control valve 50 is at this
The connection relationship in engine that inventive embodiments provide is are as follows: the second control valve 50 is concatenated by air inlet and first row port
In exhaust main 20, second exhaust port is connected to circulation line 30, and by circulation line 30 and is located under the first control valve 40
The inlet manifold 10 of trip is connected.Optionally, three-way magnetic valve can be selected in the second control valve 50.
Controller is connected with the first control valve 40 and the second control valve 50 respectively, and controller is after obtaining disconnected cylinder instruction, control
It makes disconnected cylinder cylinder group to stop working, while controlling full-time cylinder group output demand power.Optionally, controller is also used to determining
After the delivery temperature of engine is greater than or equal to default delivery temperature threshold value, i.e., engine exhaust temperature has effectively improved it
Afterwards, it controls disconnected cylinder cylinder group to resume work, and exports demand power by whole cylinders.
In conclusion engine provided in an embodiment of the present invention, during promoting the realization of delivery temperature by the cylinder that breaks,
It only needs to add the first control valve, the second control valve and circulation line, without changing the internal structure of engine, thus, it can be effective
Shorten the R&D cycle for having the engine of disconnected cylinder function.
Optionally, embodiment illustrated in fig. 1 is a kind of optional arrangement of 6 Cylinder engines, cylinder cylinder group of breaking and full-time work
The division for making cylinder group is only to provide a kind of optional example, in practical applications, can also use other division modes.Than
Such as, it divides cylinder 1 and cylinder 2 is disconnected cylinder cylinder group, dividing other remaining cylinders is full-time cylinder group etc..
In the same way, for 3 cylinders, 4 cylinders and multicylinder engine, can also equally divide according to actual needs disconnected cylinder cylinder group and
Full-time cylinder group, i.e. the first control valve and the second control valve can be arranged in different positions according to demand.
Specifically, referring to fig. 2, Fig. 2 is another engine provided in an embodiment of the present invention, specifically, being a kind of 3 cylinders hair
Motivation.As previously mentioned, two positions, which may be selected, in 3 Cylinder engines divides disconnected cylinder cylinder group and full-time cylinder.
It is another engine provided in an embodiment of the present invention referring to Fig. 3, Fig. 3, specifically, being a kind of 4 Cylinder engines, such as
Shown in figure, the first control valve and the second control valve can be arranged in 3 different positions respectively by 4 Cylinder engines, it can have three
The method of the different division of kind disconnected cylinder cylinder group and full-time cylinder group.
Referring to fig. 4, Fig. 4 is another engine provided in an embodiment of the present invention, specifically, being a kind of n Cylinder engine, such as
Shown in figure, n Cylinder engine can have (n-1) a different division mode, and details are not described herein again.It should be noted that not surpassing
Out in the case where core concept range of the present invention, the division of cylinder group can be carried out to the engine of difference cylinder quantity, to obtain
The corresponding engine that disconnected cylinder function may be implemented, this similar deformation equally belong to the range of the present patent application protection.
In summary, disconnected cylinder structure provided in an embodiment of the present invention, it is applied widely, and can be according to actual use
Demand reasonably selects the division of disconnected cylinder cylinder group and full-time cylinder group, further increases the flexibility of design.
Based on above-mentioned engine structure, the present patent application embodiment provides a kind of engine control, referring to Fig. 5, Fig. 5
It is the flow chart of engine control provided in an embodiment of the present invention, this method can be applied to the controller of engine；Reference
Fig. 1, engine control provided in an embodiment of the present invention may include:
Step S100, in the case where engine is in cold start-up or running on the lower load, disconnected cylinder instruction is generated.
The case where needing engine start to break cylinder function, engine exhaust temperature improved by disconnected cylinder substantially there are two types of, i.e.,
Engine is in cold-mix asphalt mixture, alternatively, engine is in running on the lower load.Aforementioned any one or two kinds are in engine
When operating condition, controller produces disconnected cylinder instruction, and the delivery temperature of engine is improved in a manner of through the cylinder that breaks, improves post-processing
The gas exhaust treatment effect of system.
Optionally, for the judgement of cold-mix asphalt mixture, the temperature of engine coolant can be obtained after the engine started
Degree can be determined that engine is in cold start-up operating condition if engine coolant temperature is lower than default coolant temperature threshold value.
Certainly, also to judge whether engine is in cold start-up operating condition by other way in the prior art, for example, available hair
The oil temperature of motivation judges whether engine is in cold according to the comparing result of oil temperature and default oil temperature threshold value
Start operating performance.
Optionally, it for running on the lower load, can be determined according to engine exhaust temperature, obtain engine exhaust
After temperature, gained engine exhaust temperature and default delivery temperature threshold value are compared, if engine exhaust temperature is low
In default delivery temperature threshold value, determine that engine is in running on the lower load.
Step S110, according to cylinder instruction of breaking, the first control valve of control is closed, and the second control valve of control is connected to the second control valve
The exhaust main of upstream and inlet manifold positioned at the first control valve downstream, and, the atomizer of disconnected cylinder cylinder group is closed, is increased complete
When working cylinder group distributive value and air inflow so that full-time cylinder group export demand power.
After obtaining disconnected cylinder instruction, controller controls the first control valve and closes, that is, closes the intake channel of disconnected cylinder cylinder group.
Meanwhile control the second control valve be connected to the second control valve upstream exhaust main and air inlet positioned at the first control valve downstream it is total
Pipe, so that the cylinder in disconnected cylinder cylinder group constitutes independent circulation gas circuit, when engine breaks cylinder working, not to full-time cylinder group
Normal work impact.
While carrying out above-mentioned control operation to the first control valve and the second control valve, the oil spout of disconnected cylinder cylinder group is closed
Mouth stops the fuel feeding of disconnected cylinder cylinder group inside cylinder, meanwhile, increase the distributive value and air inflow of each cylinder in full-time cylinder group, with
So that full-time cylinder group exports demand power, guarantee the normally travel of vehicle.
Optionally, while engine is with disconnected cylinder mode work, controller can also synchronize the exhaust for obtaining engine
Temperature illustrates the exhaust temperature of engine after monitoring that engine exhaust temperature is greater than or equal to default delivery temperature threshold value
Degree is normal, can satisfy after-treatment system for the demand of delivery temperature, i.e., controllable disconnected cylinder cylinder group is resumed work, and by
Whole cylinders export demand power.Specifically, the first control valve of control is opened, to restore the air inlet of disconnected cylinder cylinder group, meanwhile, control
Second control valve is connected to the exhaust main of the second control valve upstream and the second control valve downstream, i.e., so that all cylinders of engine
It all is connected to exhaust main, and the air inflow and distributive value of each cylinder of power control engine according to demand, to export demand
Power exits disconnected cylinder mode.
In conclusion engine control provided in an embodiment of the present invention, starts applied to what previous embodiment provided
Machine controls the course of work of engine, can be when engine is in cold start-up operating condition or running on the lower load, control hair
The motivation cylinder that breaks to improve delivery temperature optimizes the gas exhaust treatment effect of after-treatment system.
Engine control system provided in an embodiment of the present invention is introduced below, engine control dress described below
The engine control that may be considered that embodiment provides to realize the present invention is set, the function mould of setting is needed in central equipment
Block frame structure；Be described below content can with above it is cross-referenced.
Fig. 6 is a kind of structural block diagram for engine control system that the present patent application embodiment provides, referring to Fig. 6, the dress
It sets and may include:
Instruction generation unit 10 refers in the case where the engine is in cold start-up or running on the lower load, generating disconnected cylinder
It enables；
Control unit 20 controls first control valve and closes, control second control valve for being instructed according to the disconnected cylinder
It is connected to the exhaust main of second control valve upstream and the inlet manifold positioned at first control valve downstream, and,
The atomizer for closing the disconnected cylinder cylinder group controls the full-time cylinder group output demand power.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments in the case where not departing from core of the invention thought or scope.Therefore, originally
Invention is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein
Consistent widest scope.
Claims (10)
1. a kind of engine characterized by comprising multiple cylinders, inlet manifold, exhaust main, circulation line, the first control
Valve, the second control valve and controller, the cylinder is divided into disconnected cylinder cylinder group and full-time cylinder group, and the disconnected cylinder cylinder group is at least wrapped
Include a cylinder, wherein
Each cylinder is connected by corresponding inlet manifold with the inlet manifold respectively in the engine, and is led to respectively
Corresponding exhaust manifold is crossed to be connected with the exhaust main；
First control valve is set on the inlet manifold between the disconnected cylinder cylinder group and the full-time cylinder group, it is described
First control valve is used to close the intake channel of the disconnected cylinder cylinder group in disconnected cylinder, or, opening the disconnected cylinder cylinder in non-disconnected cylinder
The intake channel of group；
One end of the circulation line is connected to the inlet manifold for being located at first control valve downstream, the other end and described second
Control valve connection；
Second control valve is set on the exhaust main between the disconnected cylinder cylinder group and the full-time cylinder group, it is described
Second control valve is used to be connected to the exhaust main of second control valve upstream by the circulation line in disconnected cylinder and be located at
The inlet manifold in first control valve downstream, or, being connected to second control valve upstream and second control in non-disconnected cylinder
The exhaust main in valve downstream processed；
The controller is connected with first control valve and second control valve respectively, is used for after obtaining disconnected cylinder instruction,
It controls the disconnected cylinder cylinder group to stop working, and controls the full-time cylinder group output demand power.
2. engine according to claim 1, which is characterized in that the controller is also used to determining the engine
After delivery temperature is greater than or equal to preset temperature threshold, controls the disconnected cylinder cylinder group and resume work, and being exported by whole cylinders need to
Seek power.
3. engine according to claim 1, which is characterized in that second control valve includes air inlet, first exhaust
Mouth and second exhaust port, wherein
Second control valve is serially connected with the exhaust main, the second row by the air inlet and the first row port
Port is connected to the circulation line, and passes through the circulation line and the inlet manifold's phase for being located at first control valve downstream
Connection, second control valve is used to control the air inlet in disconnected cylinder and be connected to the second exhaust port, or, in non-disconnected cylinder
When control the air inlet and be connected to the first row port.
4. engine according to claim 1-3, which is characterized in that the air inlet of the inlet manifold is cold in
Device is connected；
The exhaust outlet of the exhaust main is connected with booster.
5. a kind of engine control, which is characterized in that the control applied to any one of the claim 1-4 engine
Device, which comprises
In the case where the engine is in cold start-up or running on the lower load, disconnected cylinder instruction is generated；
It is instructed according to the disconnected cylinder, controls first control valve and close, control the second control valve connection second control
The exhaust main of valve upstream processed and the inlet manifold positioned at first control valve downstream, and,
The atomizer for closing the disconnected cylinder cylinder group controls the full-time cylinder group output demand power.
6. engine control according to claim 5, which is characterized in that further include:
Obtain the delivery temperature of the engine；
If the delivery temperature is greater than or equal to the preset temperature threshold, controls the disconnected cylinder cylinder group and resume work, and by complete
Portion's cylinder exports demand power.
7. engine control according to claim 6, which is characterized in that the control disconnected cylinder cylinder group restores work
Make, and export demand power by whole cylinders, comprising:
It controls first control valve to open, to restore the air inlet of the disconnected cylinder cylinder group；
Control the exhaust main that second control valve is connected to second control valve upstream and second control valve downstream；
The air inflow and distributive value of each cylinder of engine described in power control according to demand, to export demand power.
8. engine control according to claim 6, which is characterized in that if the delivery temperature is less than described preset
Temperature threshold determines that the engine is in running on the lower load.
9. according to the described in any item engine controls of claim 5-8, which is characterized in that further include:
Obtain engine coolant temperature；
If the engine coolant temperature is lower than preset temperature threshold, determine that the engine is in cold start-up operating condition.
10. a kind of engine control system characterized by comprising
Instruction generation unit, in the case where the engine is in cold start-up or running on the lower load, generating disconnected cylinder instruction；
Control unit controls first control valve and closes, control second control valve and connect for being instructed according to the disconnected cylinder
Lead to the exhaust main of second control valve upstream and the inlet manifold positioned at first control valve downstream, and, it closes
The atomizer for closing the disconnected cylinder cylinder group controls the full-time cylinder group output demand power.
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| CN110821686A (en) * | 2020-01-09 | 2020-02-21 | 潍柴动力股份有限公司 | Control method, device and system for engine cylinder failure |
| CN110953080A (en) * | 2019-12-16 | 2020-04-03 | 潍柴动力股份有限公司 | Method and device for adjusting operation parameters of actuator |
| CN112555079A (en) * | 2020-12-02 | 2021-03-26 | 长安大学 | Methanol fuel engine and starting control method thereof |
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