CN110344957A - The determination method and device of engine injection time - Google Patents
The determination method and device of engine injection time Download PDFInfo
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- CN110344957A CN110344957A CN201910656727.8A CN201910656727A CN110344957A CN 110344957 A CN110344957 A CN 110344957A CN 201910656727 A CN201910656727 A CN 201910656727A CN 110344957 A CN110344957 A CN 110344957A
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- camshaft
- engine
- signal
- angle interval
- sensor
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Classifications
-
- 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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- 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
- F02D41/32—Controlling fuel injection of the low pressure type
- F02D41/34—Controlling fuel injection of the low pressure type with means for controlling injection timing or duration
- F02D41/345—Controlling injection timing
-
- 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
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/401—Controlling injection timing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
This application provides a kind of determination method and devices of engine injection time, by judging whether crankshaft sensor and camshaft-signal sensor break down, control strategy is adjusted in the case where crankshaft sensor failure in time, the angle interval between the physical location and calibration position of the signal and the uniform tooth of pre-stored camshaft that provide using camshaft-signal sensor determines engine injection time.Due to when determining the injection time of engine using camshaft signal, it considers mechanical swelling caused by due to installation, manufacture or temperature fluctuation etc. and causes actual camshaft signal relative to the deviation of design position, therefore the deviation can be introduced when injection time to avoid calculating under single cams mode, the accuracy for improving injection time improves the performance of engine.
Description
Technical field
The present invention relates to control technology field more particularly to a kind of determination method and devices of engine injection time.
Background technique
Crankshaft rotational speed sensor and camshaft speed sensor are sensors important in electric control system of diesel engine.Hair
Motivation electronic control unit (Electronic Control Unit, ECU) is passed according to camshaft speed sensor and speed of crankshaft
The signal that sensor provides identifies position and the stroke of cylinder piston, carries out Injection Control.
When crankshaft rotational speed sensor breaks down, come generally according to the camshaft speed sensor signal that software collection arrives
The phase for obtaining the revolving speed of engine, realizes the limping function of vehicle.
However, since installation, manufacture or temperature fluctuation lead to mechanical swelling, the camshaft-signal sensor signal that software collection arrives
It is effective along there are deviation, leading to determining engine injection time inaccuracy, burning mixture combustion between design position
It is poor to burn effect, engine performance reduces.
Summary of the invention
The application provides a kind of determination method and device of engine injection time, for solving under single camshaft mode really
The problem of fixed engine injection time inaccuracy.
In a first aspect, this application provides a kind of determination methods of engine injection time, comprising:
Judge whether crankshaft sensor and camshaft-signal sensor break down；
If the crankshaft sensor break down and the camshaft-signal sensor there is no failures, according to the first cam
Axis signal, first angle interval and second angle interval determine the injection time of engine；Wherein, first camshaft signal
Be it is detected by the camshaft-signal sensor, be divided between the first angle compression top center of the engine with and
Predetermined angle interval between the calibration position of the corresponding uniform tooth of camshaft of the compression top center, the second angle interval
To be obtained when the crankshaft sensor and the camshaft-signal sensor do not break down and the engine is in steady working condition
Angle interval between the physical location and calibration position of the uniform tooth of the corresponding camshaft of camshaft signal obtained.
Optionally, further includes:
If the crankshaft sensor and the camshaft-signal sensor there is no failure, judge whether to get the hair
The phase information of motivation；
If getting the phase information of the engine, judge whether the engine is in steady working condition；
If the engine is in steady working condition, the second angle interval is obtained, and is stored between the second angle
Every.
It is optionally, described to obtain the second angle interval, comprising:
It is detected by the camshaft-signal sensor and obtains the second camshaft signal, and obtained and believe with second camshaft
The calibration position of number corresponding uniform tooth of camshaft；
By the angle between the physical location of the corresponding uniform tooth of camshaft of second camshaft signal and calibration position
Difference is determined as the second angle interval.
Optionally, described that engine is determined according to the first camshaft signal, first angle interval and second angle interval
Before injection time, further includes:
Judge whether to get the phase information of the engine；
If getting the phase information of the engine, execute according to the first camshaft signal, first angle interval and
Second angle interval determines the step of injection time of engine.
Optionally, the compression top center of the engine is the compression top center of the 1st cylinder of engine.
Second aspect, this application provides a kind of determining devices of engine injection time, comprising:
Judgment module, for judging whether crankshaft sensor and camshaft-signal sensor break down；
Determining module, if breaking down for the crankshaft sensor and the camshaft-signal sensor is there is no failure,
The injection time of engine is then determined according to the first camshaft signal, first angle interval and second angle interval；Wherein, described
First camshaft signal be by the camshaft-signal sensor it is detected, the engine is divided between the first angle
Compression top center and the predetermined angle interval between the calibration position of the corresponding uniform tooth of camshaft of the compression top center, institute
It states to be divided between second angle and not break down and at the engine in the crankshaft sensor and the camshaft-signal sensor
Angle between the physical location and calibration position of the uniform tooth of the corresponding camshaft of the camshaft signal obtained when steady working condition
Interval.
Optionally, the judgment module is also used to:
If the crankshaft sensor and the camshaft-signal sensor there is no failure, judge whether to get described
The phase information of engine；
If getting the phase information of the engine, judge whether the engine is in steady working condition；
Further include obtaining module, if the acquisitions module is used for the engine and is in steady working condition, obtains described the
Two angle intervals, and store the second angle interval.
Optionally, the acquisition module is specifically used for:
It is detected by the camshaft-signal sensor and obtains the second camshaft signal, and obtained and believe with second camshaft
The calibration position of number corresponding uniform tooth of camshaft；
By the angle between the physical location of the corresponding uniform tooth of camshaft of second camshaft signal and calibration position
Difference is determined as the second angle interval.
Optionally, described that engine is determined according to the first camshaft signal, first angle interval and second angle interval
Before injection time, the judgment module is also used to:
Judge whether to get the phase information of the engine；
The determining module is specifically used for, if getting the phase information of the engine, executes according to the first cam
The step of axis signal, first angle interval and second angle interval determine the injection time of engine.
Optionally, the compression top center of the engine is the compression top center of the 1st cylinder of engine.
The third aspect, this application provides a kind of electronic equipment, comprising: memory and processor；
The memory, for storing program instruction；
The processor, for calling the described program stored in the memory instruction to realize the application first aspect
The determination method for the engine injection time that any embodiment provides.
Fourth aspect, this application provides a kind of storage mediums, comprising: readable storage medium storing program for executing and computer program, it is described
The determination method for the engine injection time that computer program provides for realizing any embodiment of the application first aspect.
This application provides a kind of determination method and device of engine injection time, by judging crankshaft sensor and convex
Whether axle sensor breaks down, and adjusts control strategy in the case where crankshaft sensor failure in time, is passed using camshaft
Angle interval between the physical location and calibration position of signal and the uniform tooth of pre-stored camshaft that sensor provides is true
Determine engine injection time.Due to when determining the injection time of engine using camshaft signal, it is contemplated that due to installing, making
Make or the reasons such as temperature fluctuation caused by mechanical swelling and cause actual camshaft signal relative to the deviation of design position, because
This can introduce the deviation to avoid when calculating injection time under single cams mode, improve the accuracy of injection time, change
It has been apt to the performance 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 this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is engine cam Design of Signal phase diagram provided by the embodiments of the present application；
Fig. 2 is the flow chart of the determination method for the engine injection time that the embodiment of the present application one provides；
Fig. 3 is the flow chart of the determination method for the engine injection time that the embodiment of the present application two provides；
Fig. 4 is the flow chart of the determination method for the engine injection time that the embodiment of the present application three provides；
Fig. 5 is the structural schematic diagram of the determining device of engine injection time provided by the embodiments of the present application；
Fig. 6 is the structural schematic diagram of electronic equipment provided by the embodiments of the present application.
Specific embodiment
For the ease of preferably describing method and device provided by the embodiments of the present application, to have " 60-1 " type crankshaft fluted disc
It is illustrated for the diesel engine of " 6+1 " type camshaft fluted disc.In the diesel engine, crankshaft and camshaft drive
Than for 2:1, crankshaft signal and camshaft signal are effectively along being failing edge.Camshaft signal designed phase figure is as shown in Figure 1, B is
Camshaft signal.The position of first cylinder top dead centre TDC1 is 0 ° of crank angle (Crank Angle, CA).First cylinder top dead centre with
Angle B 1 on the first effective edge of camshaft signal is 48 DEG C of A after it.Referring to shown in C in Fig. 1, incited somebody to action by 6+1 camshaft signal
One camshaft revolution, 720 DEG C of A are divided into C1, C2, C3, C4, C5, C6 and C7 six segmentations, corresponding segments length be 120 DEG C of A,
120 DEG C of A, 120 DEG C of A, 120 DEG C of A, 120 DEG C of A, 30 DEG C of A and 60 DEG C of A.Referring to shown in D in Fig. 1, camshaft signal is effectively along from the
It is respectively D1, D2, D3, D4, D5, D6 and D7 that one cylinder top dead centre, which rises,.It is available at D1 according to the designed phase figure, cam
Axis phase is 48 DEG C of A；At D2, camshaft phase is 168 DEG C of A；At D3, camshaft phase is 288 DEG C of A；At D4, cam
Axis phase is 408 DEG C of A；At D5, camshaft phase is 528 DEG C of A；When at D6, camshaft phase is 648 DEG C of A；At D7,
Camshaft phase is 678 DEG C of A.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Fig. 2 is the flow chart of the determination method for the engine injection time that the embodiment of the present application one provides.This method is held
Row main body can be the determining device of engine injection time, and the determining device of the engine injection time, which can integrate, is starting
In machine ECU.As shown in Fig. 2, the determination method of engine injection time provided in this embodiment, may include:
S201, judge whether crankshaft sensor and camshaft-signal sensor break down.
Specifically, including crankshaft sensor and camshaft-signal sensor in engine electric-controlled system.Crankshaft sensor is for examining
Crank angle displacement is surveyed, engine speed is calculated.Camshaft-signal sensor confirms and sentences cylinder for engine phase position.It is sensed in crankshaft
When device and camshaft-signal sensor do not break down, Engine ECU can be provided according to camshaft-signal sensor and crankshaft sensor
Signal, identify position and the stroke of cylinder piston, carry out accurate Injection Control.And it is passed in crankshaft sensor and camshaft
In the case of sensor, the camshaft signal that can be only provided according to camshaft-signal sensor determines engine relative phase, calculating is started
Machine revolving speed, and then injection time is controlled, realize that vehicle is walked lamely.Thus, need to judge that crankshaft is passed in engine start or operation
Whether sensor and camshaft-signal sensor break down, and to use corresponding control strategy in time, carry out Injection Control.
Wherein, the present embodiment to the fault type of crankshaft sensor and camshaft-signal sensor and judges the mode of failure not
It limits.For example, fault type may include the dropout that crankshaft sensor and/or camshaft-signal sensor provide or exist dry
It disturbs.For example, if not receiving the signal of crankshaft sensor offer or the information of camshaft-signal sensor offer within a preset time,
The dropout that crankshaft sensor or camshaft-signal sensor provide can be correspondingly determined, thus, it is possible to correspondingly determine crankshaft
Sensor or camshaft-signal sensor failure.In another example can be provided according to the crankshaft sensor or camshaft-signal sensor received
Effective time intervals between of successive two signals whether meet preset condition, judge that crankshaft sensor or camshaft pass
Whether sensor breaks down.By taking " 60-2 " type crankshaft fluted disc as an example, under normal circumstances, the last one physics tooth before hypodontia has
Angle of the two neighboring physics tooth effectively between is divided between angle of first physics tooth effectively between behind effect edge and hypodontia
3 times of degree interval.If determining that above-mentioned condition is unsatisfactory for according to the crankshaft signal that detection obtains before and after hypodontia, it is determined that crankshaft sensing
Device breaks down.
For ease of description, hereinafter crankshaft sensor and camshaft-signal sensor are not broken down and is referred to as worked normally
Mode.Crankshaft sensor is broken down and cam sensor does not break down referred to as single camshaft mode.
If S202, crankshaft sensor break down and camshaft-signal sensor there is no failures, according to the first camshaft
Signal, first angle interval and second angle interval determine the injection time of engine.
Wherein, the first camshaft signal is detected by camshaft-signal sensor.First angle interval can be hair
The compression top center of motivation and the predetermined angle interval between the calibration position of the corresponding uniform tooth of camshaft of compression top center.
It is divided between second angle and is obtained when crankshaft sensor and camshaft-signal sensor do not break down and engine is in steady working condition
Angle interval between the physical location and calibration position of the uniform tooth of the corresponding camshaft of camshaft signal obtained.
Optionally, the compression top center of engine can be the compression top center of the 1st cylinder of engine.
Optionally, first angle interval can be in design phase determination, and be stored in advance in depositing for Engine ECU
In storage device.
Optionally, when second angle interval can be each default in the case where engine work and stable conditions
Between obtain, and be stored in the storage device of Engine ECU.For example, Engine ECU can be during each working cycles
Second angle interval is obtained, and the second angle interval of newest acquisition is stored in the storage device of Engine ECU.
Optionally, first angle interval and second angle interval can be indicated with CA.Optionally, first angle interval and
Two angle intervals can be indicated with the time.
S202 is illustrated below with reference to Fig. 1.It is assumed that finding that event occurs for crankshaft sensor in engine operation process
Barrier, engine ECU controls engine enters single camshaft mode at this time, the camshaft signal acquired according to single camshaft sensor
To determine the injection time of engine.For example, camshaft signal D6 is got by camshaft-signal sensor, according to designed phase figure
It is found that being divided into 72 DEG C of A between angle between camshaft signal D6 and compressor top dead centre, therefore, Engine ECU can be deposited from it
72 DEG C of first angle interval A is got in storage device.
Moreover, it is assumed that being ultimately stored on hair when engine is in normal mode of operation and engine is in steady working condition
The camshaft signal of actually detected acquisition in the storage device of motivation ECU is effectively along effective with the camshaft signal of design calibration
M DEG C of angle interval A between, wherein m is more than or equal to 0 arbitrary number, and therefore, Engine ECU can be from its storage device
Get m ° of second angle interval.
According to first angle interval and second angle interval, Engine ECU can determine actual compression top dead centre and current
Camshaft signal is divided into (72+m) DEG C A or (72-m) DEG C A between the angle effectively between.Specifically, if currently passing through cam
The detected camshaft signal of axle sensor before effective edge in design calibration, then can effectively determine in actual compression
Stop and current camshaft signal are divided into (72+m) DEG C A between the angle effectively between.If current examined by camshaft-signal sensor
The camshaft signal obtained is surveyed effectively before effective edge in design calibration, then can determine actual compression top dead centre and current
Camshaft signal is divided into (72-m) DEG C A between the angle effectively between.
It, can be according to reality due to being had determined at predetermined angle of the oil spout position on the compressor before stop in the design phase
The angle interval of border compression top center and current camshaft signal effectively between determines current camshaft signal effectively edge and spray
Oil level set between angle interval.It is assumed that known fuel injection position 8 DEG C of A before stop on the compressor, then can determine and work as front cam
Axis signal effectively along be divided into (64-m) DEG C A between the angle between oil spout position.
Further, according to current rotating speed n rpm clock, current camshaft signal effectively edge and oil spout position can be determined
Between angle between be divided into ((64-m)/(6n)) s, wherein n can be according between the adjacent time for receiving camshaft signal twice
Every determination.For example, the adjacent time interval for receiving camshaft signal twice is Ts, camshaft section length is 120 DEG C of A, by
This, can determine that present engine revolving speed n is 20/T revs/min.
In the present embodiment, by judging whether crankshaft sensor and camshaft-signal sensor break down, passed in time in crankshaft
Control strategy is adjusted in the case where sensor failure, the signal and pre-stored camshaft provided using camshaft-signal sensor is equal
Angle interval between the physical location and calibration position of even tooth determines engine injection time.Due to utilizing camshaft signal
When determining the injection time of engine, it is contemplated that mechanical swelling caused by due to installation, manufacture or temperature fluctuation etc. and lead
It causes actual camshaft signal relative to the deviation of design position, therefore injection time can be calculated to avoid under single cams mode
When introduce the deviation, improve the accuracy of injection time, improve the performance of engine.
On the basis of embodiment shown in Fig. 2, optionally, according to the first camshaft signal, first angle interval and second
Before angle interval determines the injection time of engine, can also include:
Judge whether to get the phase information of engine.
If getting the phase information of engine, execute according to the first camshaft signal, first angle interval and second
Angle interval determines the step of injection time of engine.
Specifically, if crankshaft sensor and camshaft-signal sensor break down in engine start, Engine ECU root
It according to the signal that camshaft-signal sensor provides, determines whether engine synchronizes, and determines the first cylinder compression top center.If engine
ECU can determine the first cylinder compression top center, then executes S202.If Engine ECU, which is not sent out, determines the first cylinder compression top center,
Engine ECU makes engine stop.
By starting according to the determination of the first camshaft signal, first angle interval and second angle interval in the present embodiment
Judge whether engine synchronizes before the injection time of machine, it can be to avoid when engine be asynchronous, even if using getting
Second angle interval is modified the first camshaft signal got, also cannot accurately determine injection time, cause flammable
Mixed gas combustion efficiency is poor, and engine performance reduces, or even damage engine.
On the basis of embodiment shown in Fig. 2, referring to figure 3., optionally, if crankshaft sensor and camshaft-signal sensor are equal
There is no failure, the determination method of engine injection time provided in this embodiment can also include:
S301, judge whether to get the phase information of engine.
Specifically, after the engine started and crankshaft sensor and camshaft-signal sensor the case where there is no failures
Under, Engine ECU determines that crank goes to top dead centre according to the signal that crankshaft sensor provides, and passes according further to cam
The signal that sensor provides determines that crank is in compression top center, thus gets the phase information of engine.
If S302, the phase information for getting engine, judge whether engine is in steady working condition.
If engine is in steady operation, S303 is executed；If engine is not at steady working condition, execution is returned
S301。
Specifically, steady working condition can refer to that engine is not currently in boost phase or decelerating phase.The present embodiment pair
Judge whether engine is in the mode of steady working condition without limitation.As a kind of possible implementation, Engine ECU every
Preset period of time according to the crankshaft signal got effectively along determine engine revolving speed, according to adjacent preset period of time intrinsic motivation
Revolving speed determines the acceleration of engine.If the acceleration of engine is 0, it can determine that engine is in steady operation.
S303, second angle interval is obtained, and stores second angle interval.
The determination method of engine injection time provided in this embodiment, due to determining that engine turns after the engine started
In fast smoothly situation, the signal that crankshaft sensor and camshaft-signal sensor provide is capable of the more acurrate reflection uniform tooth of camshaft
Departure degree of the physical location relative to calibration position, therefore the second angle interval got can be made more accurate.
On the basis of embodiment shown in Fig. 3, referring to figure 4., optionally, a kind of implementation of S303 is provided.Such as
Shown in Fig. 4, second angle interval is obtained, may include:
S401, the second camshaft signal of acquisition is detected by camshaft-signal sensor, and obtain and the second camshaft signal
The calibration position of the corresponding uniform tooth of camshaft.
It for ease of description, will be in crankshaft sensor and the non-failure of camshaft-signal sensor and engine is in steady working condition
The second camshaft signal is known as by the detected camshaft signal of camshaft-signal sensor down.
S402, by the physical location of the uniform tooth of the corresponding camshaft of the second camshaft signal and calibration position between angle
Difference is determined as second angle interval.
S401 and S402 are illustrated below with reference to Fig. 1.
By camshaft signal in Fig. 1 effectively along the uniform tooth of the corresponding camshaft of D5 for.It is assumed that camshaft-signal sensor detects
The second camshaft signal D5 is obtained, Engine ECU turns according to the crankshaft that the second camshaft signal D5 and crankshaft sensor provide
Angle determines the physical location of the uniform tooth of the corresponding camshaft of the second camshaft signal, for example, the physical location is 640 DEG C of A.This
Outside, pre-stored second camshaft signal from Engine ECU is corresponding convex according to the second camshaft signal D5 for Engine ECU
The calibration position of the uniform tooth of wheel shaft, for example, as shown in Figure 1, the calibration of the corresponding uniform tooth of camshaft of the second camshaft signal D5
Position is 648 DEG C of A.Thus, it is possible to be divided into 8 DEG C of A between determining second angle.
Fig. 5 is the structural schematic diagram of the determining device of engine injection time provided by the embodiments of the present application.The present embodiment
The determining device of the engine injection time of offer, to execute the application any means embodiment offer engine oil spout when
Between determination method.As shown in figure 5, the determining device of engine injection time provided in this embodiment, may include:
Judgment module 51, for judging whether crankshaft sensor and camshaft-signal sensor break down；
Determining module 52, if break down for crankshaft sensor and camshaft-signal sensor there is no failure, bases
First camshaft signal, first angle interval and second angle interval determine the injection time of engine；Wherein, the first camshaft
Signal be it is detected by camshaft-signal sensor, be divided between first angle the compression top center of engine with and compression on stop
Predetermined angle interval between the calibration position of the corresponding uniform tooth of camshaft of point, be divided between second angle in crankshaft sensor and
Camshaft-signal sensor does not break down and engine to be in the corresponding camshaft of camshaft signal obtained when steady working condition equal
Angle interval between the physical location and calibration position of even tooth.
Optionally, judgment module 51 is also used to:
If crankshaft sensor and camshaft-signal sensor judge whether the phase for getting engine there is no failure
Information；
If getting the phase information of engine, judge whether engine is in steady working condition；
Further include obtaining module, is in steady working condition for engine if obtaining module, obtains second angle interval, and
Store second angle interval.
Optionally, module is obtained to be specifically used for:
It is detected by camshaft-signal sensor and obtains the second camshaft signal, and obtained corresponding with the second camshaft signal
The calibration position of the uniform tooth of camshaft；
By the physical location of the uniform tooth of the corresponding camshaft of the second camshaft signal and the angle difference between position is demarcated,
It is determined as second angle interval.
Optionally, the oil spout of engine is determined according to the first camshaft signal, first angle interval and second angle interval
Before time, judgment module 51 is also used to:
Judge whether to get the phase information of engine；
Determining module 52 is specifically used for, if getting the phase information of engine, execute according to the first camshaft signal,
The step of first angle interval and second angle interval determine the injection time of engine.
Optionally, the compression top center of engine is the compression top center of the 1st cylinder of engine.
The determining device of engine injection time provided in this embodiment is mentioned to execute the application any means embodiment
The determination method of the engine injection time of confession, technical principle is similar with technical effect, and details are not described herein again.
Fig. 6 is the structural schematic diagram of electronic equipment provided by the embodiments of the present application.Electronic equipment provided in this embodiment is used
In the determination method for executing the engine injection time that the application any means embodiment provides.As shown in fig. 6, the present embodiment mentions
The electronic equipment of confession may include at least one processor 61 and memory 62.
In the operational process of electronic equipment, memory 62 is stored with program instruction, at least one processor 61 executes institute
The program instruction of the storage of memory 62 is stated, so that electronic equipment executes the engine spray of the application any means embodiment offer
The determination method of oily time.
The specific implementation procedure of electronic equipment can be found in the application any means embodiment, implementing principle and technical effect
Similar, details are not described herein again for the present embodiment.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the embodiment of the present invention, rather than to it
Limitation；Although the embodiment of the present invention is described in detail referring to foregoing embodiments, those skilled in the art
It is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, either to part of or
All technical features are equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution this hair
The range of bright embodiment technical solution.
Claims (10)
1. a kind of determination method of engine injection time characterized by comprising
Judge whether crankshaft sensor and camshaft-signal sensor break down；
If the crankshaft sensor breaks down and the camshaft-signal sensor is there is no failure, believed according to the first camshaft
Number, first angle interval and second angle interval determine the injection time of engine；Wherein, first camshaft signal is logical
Cross that the camshaft-signal sensor is detected, be divided between the first angle compression top center of the engine with and it is described
Predetermined angle interval between the calibration position of the uniform tooth of the corresponding camshaft of compression top center, is divided between the second angle
The crankshaft sensor and the camshaft-signal sensor do not break down and the engine is in and obtains when steady working condition
Angle interval between the physical location and calibration position of the uniform tooth of the corresponding camshaft of camshaft signal.
2. the method according to claim 1, wherein further include:
If the crankshaft sensor and the camshaft-signal sensor there is no failure, judge whether to get the engine
Phase information；
If getting the phase information of the engine, judge whether the engine is in steady working condition；
If the engine is in steady working condition, the second angle interval is obtained, and stores the second angle interval.
3. according to the method described in claim 2, it is characterized in that, described obtain the second angle interval, comprising:
It is detected by the camshaft-signal sensor and obtains the second camshaft signal, and obtained and second camshaft signal pair
The calibration position of the uniform tooth of the camshaft answered；
By the physical location of the corresponding uniform tooth of camshaft of second camshaft signal and the angle difference between position is demarcated,
It is determined as the second angle interval.
4. method according to claim 1-3, which is characterized in that described according to the first camshaft signal, first
Angle interval and second angle interval determine before the injection time of engine, further includes:
Judge whether to get the phase information of the engine；
If getting the phase information of the engine, execute according to the first camshaft signal, first angle interval and second
Angle interval determines the step of injection time of engine.
5. method according to claim 1-3, which is characterized in that the compression top center of the engine is described
The compression top center of the 1st cylinder of engine.
6. a kind of determining device of engine injection time characterized by comprising
Judgment module, for judging whether crankshaft sensor and camshaft-signal sensor break down；
Determining module, if break down for the crankshaft sensor and the camshaft-signal sensor there is no failure, roots
The injection time of engine is determined according to the first camshaft signal, first angle interval and second angle interval；Wherein, described first
Camshaft signal be by the camshaft-signal sensor it is detected, the compression of the engine is divided between the first angle
Top dead centre and the predetermined angle interval between the calibration position of the corresponding uniform tooth of camshaft of the compression top center, described the
It is divided into and does not break down in the crankshaft sensor and the camshaft-signal sensor and the engine is in steady between two angles
Determine the angle interval between the physical location of the uniform tooth of the corresponding camshaft of the camshaft signal obtained when operating condition and calibration position.
7. device according to claim 6, which is characterized in that the judgment module is also used to:
If the crankshaft sensor and the camshaft-signal sensor there is no failure, judge whether to get described start
The phase information of machine；
If getting the phase information of the engine, judge whether the engine is in steady working condition；
Further include obtaining module, if the acquisition module is in steady working condition for the engine, obtains described second jiao
Degree interval, and store the second angle interval.
8. device according to claim 7, which is characterized in that the acquisition module is specifically used for:
It is detected by the camshaft-signal sensor and obtains the second camshaft signal, and obtained and second camshaft signal pair
The calibration position of the uniform tooth of the camshaft answered；
By the physical location of the corresponding uniform tooth of camshaft of second camshaft signal and the angle difference between position is demarcated,
It is determined as the second angle interval.
9. according to the described in any item devices of claim 6-8, which is characterized in that described according to the first camshaft signal, first
Before angle interval and second angle interval determine the injection time of engine, the judgment module is also used to:
Judge whether to get the phase information of the engine；
The determining module is specifically used for, if getting the phase information of the engine, executes and is believed according to the first camshaft
Number, first angle interval and second angle interval the step of determining the injection time of engine.
10. a kind of electronic equipment characterized by comprising memory and processor；
The memory, for storing program instruction；
The processor, for calling the described program stored in the memory instruction to realize as appointed in claim 1-5
The determination method of engine injection time described in one.
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