阅读说明：本技术 发动机检测诊断方法、装置及增程式电动汽车 (Engine checkout and diagnosis method, apparatus and stroke-increasing electric automobile ) 是由 熊华锋 陈领平 戴西槐 杜月鑫 罗成 于 2019-09-10 设计创作，主要内容包括：本申请提供了一种发动机检测诊断方法、装置及增程式电动汽车,涉及新能源汽车领域。该方法在所述增程式电动汽车的发动机运转后,若确认有未完成的预设检测诊断项目,则停止所述发动机的燃油供应。接着控制所述发动机继续工作,并维持所述发动机的转速为停止燃油供应时所述发动机的转速。最后,执行未完成的预设检测诊断项目,并在所述预设检测诊断项目完成后,恢复所述发动机的燃油供应。如此,通过停止增程器的发动机的燃油供应,并控制发动机继续转动,以完成检测诊断项目,保证车辆的安全性及合规性。(This application provides a kind of engine checkout and diagnosis method, apparatus and stroke-increasing electric automobiles, are related to new-energy automobile field.This method, if confirmation has unfinished default checkout and diagnosis project, stops the fuel supply of the engine after the engine operating of the stroke-increasing electric automobile.The revolving speed of engine when then controlling the engine to work on, and the revolving speed of the engine being maintained to be stopping fuel supply.Finally, executing unfinished default checkout and diagnosis project, and after the completion of the default checkout and diagnosis project, restore the fuel supply of the engine.In this way, by the fuel supply for the engine for stopping distance increasing unit, and control engine and continue to rotate, to complete checkout and diagnosis project, guarantee the safety and compliance of vehicle.)

1. a kind of engine checkout and diagnosis method, which is characterized in that applied to the controller of stroke-increasing electric automobile, the method Include:

After the engine operating of the stroke-increasing electric automobile, if confirmation has unfinished default checkout and diagnosis project, stop The only fuel supply of the engine；

It controls the engine to work on, and maintaining the revolving speed of the engine is engine when stopping fuel supply Revolving speed；

Unfinished default checkout and diagnosis project is executed, and after the completion of the default checkout and diagnosis project, is started described in recovery The fuel supply of machine.

2. engine checkout and diagnosis method according to claim 1, which is characterized in that if the confirmation have it is unfinished pre- If checkup item, then the step of stopping the fuel supply of the engine, includes:

If confirmation has unfinished default checkout and diagnosis project, the operation data of the stroke-increasing electric automobile is obtained, is judged Whether the operation data meets preset condition, if meeting the preset condition, stops the fuel supply of the engine.

3. engine checkout and diagnosis method according to claim 2, which is characterized in that the controller includes engine control Device and entire car controller processed, the operation data for obtaining the engine, judge whether the operation data meets default item Part, if the step of meeting the preset condition, stopping the fuel supply of the engine include:

The engine controller obtains the first operation data of the engine, and judges whether first operation data is full The first preset condition of foot, if satisfied, then sending oil-break request to the entire car controller；

The entire car controller receives the oil-break request, obtains the second operation data of the stroke-increasing electric automobile, and sentence Whether second operation data of breaking meets the second preset condition, if satisfied, then sending oil-break grant commands to the engine Controller；

The engine controller receives the oil-break grant commands, stops the fuel supply of the engine.

4. engine checkout and diagnosis method according to claim 2 or 3, which is characterized in that the stroke-increasing electric automobile It further include fuel injector and throttle switch, the step of fuel supply for stopping the engine includes:

It controls the fuel injector and stops oil spout, and control the throttle switch and reach predeterminated position, to stop the engine Fuel supply.

5. engine checkout and diagnosis method according to claim 1, which is characterized in that described in the default checkout and diagnosis After the completion of project, the step of restoring the fuel supply of the engine, includes:

After the completion of the default checkout and diagnosis project, the third operation data of the stroke-increasing electric automobile is obtained；

When confirming that the third operation data meets third preset condition, restore the fuel supply of the engine.

6. engine checkout and diagnosis method according to claim 1, which is characterized in that the controller includes engine control Device and entire car controller processed, it is described after the completion of the default checkout and diagnosis project, restore the fuel supply of the engine Step includes:

The engine controller after the completion of detecting the default checkout and diagnosis project, move back by the transmission of Xiang Suoshu entire car controller Oil-break is requested out；

The entire car controller exits oil-break request described in receiving, and obtains the third operation data of the stroke-increasing electric automobile, And judge whether the third operation data meets third preset condition, oil-break grant commands are exited to institute if satisfied, then sending State engine controller；

The engine controller exits oil-break grant commands described in receiving, and restores the fuel supply of the engine.

7. engine checkout and diagnosis method according to claim 1, which is characterized in that the default checkout and diagnosis project packet Include post oxygen sensor response diagnostics, EGR flow diagnosis and EGR purging.

8. a kind of engine checkout and diagnosis device, which is characterized in that applied to the controller of stroke-increasing electric automobile, described device Include:

Closedown module, for after the operating of the engine of the stroke-increasing electric automobile, confirmation to detect unfinished preset Checkout and diagnosis project then stops the fuel supply of the engine；

Drive module, for keeping the generator of the stroke-increasing electric automobile to work on to maintain the current of the engine Revolving speed；

Recovery module is restored for executing the default checkout and diagnosis project, and after the completion of the default checkout and diagnosis project The fuel supply of the engine.

9. a kind of readable storage medium storing program for executing, which is characterized in that be stored with computer program, the calculating in the readable storage medium storing program for executing Machine program, which is performed, realizes engine checkout and diagnosis method of any of claims 1-7.

10. a kind of stroke-increasing electric automobile, which is characterized in that the stroke-increasing electric automobile includes controller, memory and total Line, the memory are stored with the executable machine readable instructions of the controller, described when stroke-increasing electric automobile operation By bus communication between controller and the memory, the controller executes the machine readable instructions, to execute as weighed Benefit requires the step of engine checkout and diagnosis method described in 1-7 any one.

Technical field

This application involves new-energy automobile fields, in particular to a kind of engine checkout and diagnosis method, apparatus and increasing Formula electric car.

Background technique

Bring energy crisis and problem of environmental pollution, electronic vapour are steeply risen in order to solve today's society car ownership Vehicle comes into being.The electric energy that electric car can be converted using various energy resources, greatly developing electric car is to realize automobile The inevitable choice of industry sustainable and healthy development.But current electric powered motor battery group specific energy is small, in primary charging continues Journey is short, and the charging time is long, and charging station is not popularized, and large-scale commercial is difficult to realize in the short time.It is promoted to solve electric car Universal problem, automobile industry propose and have developed a kind of new electric car operational mode --- stroke-increasing electric automobile.Increase Formula electric car is loaded with an auxiliary generating system, i.e. distance increasing unit on pure electric automobile, can be in battery capacity deficiency For driving motor for electric automobile power supply, electric car is made to realize the ability that continues for being up to several hundred kilometers.

Meanwhile relevant laws and regulations, when each driving cycle, must be to the detectabilities of institute's oxygen sensor, sound on vehicle The discharge characteristic etc. for answering speed and exhaust gas recirculation valve is monitored.Meanwhile to prevent OCV (oil pressure cntrol) valve, exhaust gas from following again Ring (Exhaust Gas Re-circulation, EGR) valve etc. is influenced to be easy to produce carbon distribution by tail gas, it is also desirable to empty using cleaning Gas carries out the checkout and diagnosis project such as purging.

It is designed to simplify, in existing conventional fuel oil car or hybrid electric vehicle, is all made of and is slided automatically in vehicle deceleration The above checkout and diagnosis project is carried out under into DECEL ENLEAN operating condition.But under existing control logic, engine extended-range electric vehicle Due to the structural behaviour of itself, it is unable to complete the checkout and diagnosis requirement that relevant regulations are distinctly claimed.How in extended-range electric vehicle Upper completion checkout and diagnosis requirement, guarantees the safety and compliance of vehicle, is current urgent problem.

Summary of the invention

Based on the above issues, this application provides a kind of engine checkout and diagnosis method, apparatus and stroke-increasing electric automobiles.

Embodiments herein this can be implemented so that

In a first aspect, the embodiment of the present application provides a kind of engine checkout and diagnosis method, it is applied to stroke-increasing electric automobile Controller, which comprises

After the engine operating of the stroke-increasing electric automobile, if confirmation has unfinished default checkout and diagnosis project, Then stop the fuel supply of the engine；

Start described in when controlling the engine to work on, and maintaining the revolving speed of the engine to stop fuel supply The revolving speed of machine；

Unfinished default checkout and diagnosis project is executed, and after the completion of the default checkout and diagnosis project, described in recovery The fuel supply of engine.

In alternative embodiments, if the confirmation has unfinished default checkup item, stop the engine Fuel supply the step of include:

If confirmation has unfinished default checkout and diagnosis project, the operation data of the stroke-increasing electric automobile is obtained, Judge whether the operation data meets preset condition, if meeting the preset condition, the fuel oil for stopping the engine being supplied It answers.

In alternative embodiments, the controller includes engine controller and entire car controller, the acquisition institute The operation data for stating engine, judges whether the operation data meets preset condition, if meeting the preset condition, stops The step of fuel supply of the engine includes:

The engine controller obtains the first operation data of the engine, and judges that first operation data is The first preset condition of no satisfaction, if satisfied, then sending oil-break request to the entire car controller；

The entire car controller receives the oil-break request, obtains the second operation data of the stroke-increasing electric automobile, And judge whether second operation data meets the second preset condition, if satisfied, then sending oil-break grant commands to the hair Motivation controller；

The engine controller receives the oil-break grant commands, stops the fuel supply of the engine.

In alternative embodiments, the stroke-increasing electric automobile further includes fuel injector and throttle switch, described to stop Only the step of fuel supply of the engine includes:

It controls the fuel injector and stops oil spout, and control the throttle switch and reach predeterminated position, to stop the hair The fuel supply of motivation.

In alternative embodiments, described after the completion of the default checkout and diagnosis project, restore the engine The step of fuel supply includes:

After the completion of the default checkout and diagnosis project, the third operation data of the stroke-increasing electric automobile is obtained；

When confirming that the third operation data meets third preset condition, restore the fuel supply of the engine.

In alternative embodiments, the controller includes engine controller and entire car controller, described described After the completion of default checkout and diagnosis project, the step of restoring the fuel supply of the engine, includes:

The engine controller is after the completion of detecting the default checkout and diagnosis project, Xiang Suoshu entire car controller hair It send and exits oil-break request；

The entire car controller exits oil-break request described in receiving, and obtains the third operation number of the stroke-increasing electric automobile According to, and judge whether the third operation data meets third preset condition, oil-break grant commands are exited extremely if satisfied, then sending The engine controller；

The engine controller exits oil-break grant commands described in receiving, and restores the fuel supply of the engine.

In alternative embodiments, the default checkout and diagnosis project includes post oxygen sensor response diagnostics, EGR flow Diagnosis and EGR purging.

Second aspect, the embodiment of the present application provide a kind of engine checkout and diagnosis device, are applied to stroke-increasing electric automobile Controller, described device includes:

Closedown module, for after the operating of the engine of the stroke-increasing electric automobile, confirmation to detect unfinished Default checkout and diagnosis project, then stop the fuel supply of the engine；

Drive module, for keeping the generator of the stroke-increasing electric automobile to work on to maintain the engine Current rotating speed；

Recovery module, for executing the default checkout and diagnosis project, and after the completion of the default checkout and diagnosis project, Restore the fuel supply of the engine.

The third aspect, the embodiment of the present application provide a kind of readable storage medium storing program for executing, meter are stored in the readable storage medium storing program for executing Calculation machine program, the computer program, which is performed, realizes engine checkout and diagnosis side described in any one of aforementioned embodiments Method.

Fourth aspect, the embodiment of the present application provide a kind of stroke-increasing electric automobile, and the stroke-increasing electric automobile includes control Device, memory and bus processed, the memory is stored with the executable machine readable instructions of the controller, when extended-range is electronic When automobilism, by bus communication between the controller and the memory, the controller executes described machine readable Instruction, the step of to execute engine checkout and diagnosis method as described in aforementioned embodiments any one.

This application provides a kind of engine checkout and diagnosis method, apparatus and stroke-increasing electric automobiles, are related to new energy vapour Vehicle field.This method is after the engine operating of the stroke-increasing electric automobile, if confirmation has unfinished default checkout and diagnosis Project then stops the fuel supply of the engine.Then it controls the engine to work on, and maintains the engine Revolving speed is the revolving speed of engine when stopping fuel supply.Finally, executing unfinished default checkout and diagnosis project, and in institute After the completion of stating default checkout and diagnosis project, restore the fuel supply of the engine.In this way, passing through the engine for stopping distance increasing unit Fuel supply, and control engine and continue to rotate, to complete checkout and diagnosis project, guarantee the safety and compliance of vehicle.

Detailed description of the invention

Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.

Fig. 1 is the structural block diagram of stroke-increasing electric automobile provided by the embodiments of the present application；

Fig. 2 is the flow chart of engine checkout and diagnosis method provided by the embodiments of the present application；

Fig. 3 is one of the sub-step flow chart in engine checkout and diagnosis method provided by the embodiments of the present application；

Fig. 4 is two of the sub-step flow chart in engine checkout and diagnosis method provided by the embodiments of the present application；

Fig. 5 is three of the sub-step flow chart in engine checkout and diagnosis method provided by the embodiments of the present application；

Fig. 6 is the functional block diagram of engine checkout and diagnosis device provided by the embodiments of the present application.

Icon: 100- stroke-increasing electric automobile；110- memory；120- controller；130- engine checkout and diagnosis device； 131- closedown module；132- drive module；133- recovery module.

Specific embodiment

To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented The component of example can be arranged and be designed with a variety of different configurations.

Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection It encloses.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In addition, being only used for distinguishing description if there is term " first ", " second " etc., it is not understood to indicate or imply phase To importance.

It should be noted that in the absence of conflict, the feature in embodiments herein can be combined with each other.

Through inventor the study found that under existing control logic, engine stroke-increasing electric automobile starts in deceleration Machine will not oil-break, therefore be also just unable to complete the checkout and diagnosis requirement of relevant laws and regulations clear stipulaties.Certainly, also have by repairing at present Change full-vehicle control logic, the method that the deceleration of engine retard oil-break state and vehicle is bound, but this method Again can be because of the frequent DECEL ENLEAN of engine, the complexity for bringing SOC (System on Chip, system level chip) to control increases Add, drive comfort decline and vehicle NVH (Noise, Vibration, Harshness) problem.

Based on above-mentioned discovery, the embodiment of the present application provides a kind of engine checkout and diagnosis method, apparatus and extended-range electricity Electrical automobile.This method is by when detecting unfinished default checkout and diagnosis project, to the engine oil-break of distance increasing unit, and Control engine continues to rotate, to complete checkout and diagnosis project.The above method is described in detail below.

Referring to Fig. 1, Fig. 1 is a kind of structural schematic diagram of stroke-increasing electric automobile 100 provided by the embodiments of the present application.Institute Stating equipment may include controller 120, memory 110, engine checkout and diagnosis device 130 and bus, and the memory 110 is deposited The executable machine readable instructions of the controller 120 are contained, when stroke-increasing electric automobile 100 is run, the controller 120 And by bus communication between the memory 110, the controller 120 executes the machine readable instructions, and executes and start The step of machine testing diagnostic method.

The memory 110, controller 120 and other each elements are directly or indirectly electrically connected between each other, with Realize the transmission or interaction of signal.

It is electrically connected for example, these elements can be realized between each other by one or more communication bus or signal wire.Hair Motivation checkout and diagnosis device 130 includes that at least one can be stored in the memory in the form of software or firmware (firmware) Software function module in 110.The controller 120 is used to execute the executable module stored in memory 110, such as described Software function module or computer program included by engine checkout and diagnosis device 130.

Wherein, memory 110 may be, but not limited to, random-access memory (Random Access memory, RAM), read-only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM), Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..

Controller 120 can be a kind of IC chip, have signal handling capacity.Above controller 120 can be General processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit (Network Processor, abbreviation NP) etc..

It can also be digital signal processor (DSP), specific integrated circuit (ASIC), field programmable gate array (FPGA) Either other programmable logic device, discrete gate or transistor logic, discrete hardware components.It may be implemented or execute Disclosed each method, step and logic diagram in the embodiment of the present application.General processor can be microprocessor or this at Reason device is also possible to any conventional processor etc..

In the present embodiment, for storing program, controller 120 is used for after receiving and executing instruction memory 110, is executed Described program.The method of the revealed flow definition of the embodiment of the present application any embodiment can be applied in controller 120, Or it is realized by the controller 120.

It is appreciated that structure shown in FIG. 1 is only to illustrate.Stroke-increasing electric automobile 100 can also have than shown in Fig. 1 more More perhaps less component or with the configuration different from shown in Fig. 1.Each component shown in FIG. 1 can use hardware, software Or combinations thereof realize.

As shown in Fig. 2, being a kind of flow diagram of engine checkout and diagnosis method provided by the present application.It below will be to figure Detailed process shown in 2 is described in detail.

S1, after the engine operating of the stroke-increasing electric automobile 100, if confirmation has unfinished default checkout and diagnosis Project then stops the fuel supply of the engine.

Distance increasing unit is the auxiliary generating unit of vehicle dynamical system, it is made of engine, generator and controller 120. Engine is the power source and energy storage units of distance increasing unit.Generator uses power generation integrated formula motor (Integrated Starter Generator, ISG).When engine start, need to make generator work in motoring condition, so that starting is started Machine.After engine start, by the control of controller 120, generator switchs to generating state, and the electric energy of sending passes through controller 120 power to main drive motor, while giving power battery charging.

In the embodiment of the present application, during stroke-increasing electric automobile 100 is run, after engine operating, controller 120 Detect whether unfinished default checkout and diagnosis project, it is if there is unfinished default checkup item, then sliding in car deceleration Stop the fuel supply of engine when row, to create conditions to the default checkup item of completion.If preset term is all completed Subsequent processing is not made.

Optionally, confirmation has unfinished default checkout and diagnosis project in S1, then stops the fuel supply of the engine It may be accomplished by.

If confirmation has unfinished default checkout and diagnosis project, the operation number of the stroke-increasing electric automobile 100 is obtained According to judging whether the operation data meets preset condition, if meeting the preset condition, stop the fuel oil of the engine Supply.

As an implementation, referring to Fig. 3, the controller 120 includes engine controller and entire car controller. The step of engine controller and entire car controller can pass through S11-S13 realizes the fuel supply for stopping the engine.

S11, the engine controller obtain the first operation data of the engine, and judge the first operation number According to whether the first preset condition is met, if satisfied, then sending oil-break request to the entire car controller.

Wherein, the first operation data can be the operation for the engine passed back by the sensor group being arranged on distance increasing unit Data may include engine speed, coolant temperature, the runing time of engine and voltage of post oxygen sensor etc..

Optionally, in the embodiment of the present application, the first preset condition be can be, and whether engine speed is greater than 1300r/m, cold But whether liquid temperature is lower than 65 DEG C, whether the runing time of engine reaches 120s, whether the voltage of post oxygen sensor is less than 650mV。

S12, the entire car controller receive the oil-break request, obtain the second fortune of the stroke-increasing electric automobile 100 Row data, and judge whether second operation data meets the second preset condition, if satisfied, then sending oil-break grant commands extremely The engine controller.

Wherein, the second operation data can be the operation data of stroke-increasing electric automobile 100, may include speed, power State-of-charge and vehicle power of battery etc..

Optionally, in the embodiment of the present application, the second preset condition can be, and whether speed is greater than 2km/h, power battery Whether state-of-charge, the i.e. electricity of power battery are greater than 30%, and whether vehicle power is less than 5Nm.

S13, the engine controller receive the oil-break grant commands, stop the fuel supply of the engine.

Further, the stroke-increasing electric automobile 100 further includes fuel injector and throttle switch, can pass through control institute It states fuel injector and stops oil spout, and control the throttle switch and reach predeterminated position, to stop the fuel supply of the engine.

Optionally, predeterminated position can be the 3% of throttle switch calibration value, and the idling speed for specifically referring to automobile is The level value of 800rpm.

In this way, can by the operation data and preset condition of stroke-increasing electric automobile 100 determine stop fuel supply compared with Good time point is promoted to reduce the number of engine retard oil-break and drives comfort and reduce vehicle NVH problem.

S2 controls the engine and works on, and when maintaining the revolving speed of the engine to stop fuel supply described in The revolving speed of engine.

In the embodiment of the present application, the method that control engine works on can be control stroke-increasing electric automobile 100 Electric motor operation drives engine to continue to rotate in motoring condition.

Optionally, as an implementation, the revolving speed that engine continues to rotate can be preset rotation speed, be completed with reaching Condition required for default checkout and diagnosis project.

As another embodiment, the revolving speed that engine continues to rotate in the embodiment of the present application can also be stopping fuel oil For the revolving speed of seasonable engine.In this way, the pause and transition in rhythm or melody sense that automobile generates when can reduce fuel oil cut-off, promotes driving experience, and be The condition needed is created at default checkout and diagnosis project.

S3 executes unfinished default checkout and diagnosis project, and after the completion of the default checkout and diagnosis project, restores institute State the fuel supply of engine.

Optionally, referring to Fig. 4, as an implementation, the step of can passing through S31A-S32A, is in the default detection After the completion of checkup item, restore the fuel supply of the engine.

S31A obtains the third operation of the stroke-increasing electric automobile 100 after the completion of the default checkout and diagnosis project Data.

S32A restores the fuel supply of the engine when confirming that the third operation data meets third preset condition.

Referring to Fig. 5, as another embodiment, the step of can also passing through S31B-S33B, examines in the default detection After the completion of disconnected project, restore the fuel supply of the engine.

S31B, the engine controller is after the completion of detecting the default checkout and diagnosis project, Xiang Suoshu vehicle control Oil-break request is exited in device transmission processed.

S32B, the entire car controller receive described in exit oil-break request, obtain the of the stroke-increasing electric automobile 100 Three operation datas, and judge whether the third operation data meets third preset condition, permitted if satisfied, then sending and exiting oil-break It can order to the engine controller.

S33B, the engine controller receive described in exit oil-break grant commands, the fuel oil for restoring the engine supplies It answers.

Wherein, third operation data can be identical as the second above-mentioned operation data, may include the lotus of speed, power battery Electricity condition and vehicle power etc..

Its third preset condition can be set according to specific requirements, such as the state-of-charge of comprehensive descision speed, power battery And vehicle power determines the need for exiting oil-break.

In this way, can determine preferable opportunity when exiting oil-break through the above steps, driving experience is promoted.

Further, checkout and diagnosis project is preset described in the embodiment of the present application includes post oxygen sensor response diagnostics, EGR Flow diagnostic and EGR purging.

A possibility that wherein EGR purging is arranged in distance increasing unit operation, can reduce carbon distribution, reduces the mistake of auto parts and components Imitate risk.

It should be noted that optionally, above-mentioned default checkout and diagnosis project can also include other checkout and diagnosis projects, In This is without limitation.

In the embodiment of the present application, on the one hand, by giving increasing journey when detecting unfinished default checkout and diagnosis project The engine oil-break of device, and control engine and continue to rotate, to complete checkout and diagnosis project.On the other hand, it is needed in engine When ability activly request carry out oil-break, and by it is multiple diagnosis and detection project concentrate in a fuel cut-off condition completing, reduction is resolved Oily number reduces the influence to vehicle NVH.Reduce the interference to engine automatic start-stop simultaneously, avoids generator as far as possible With the race of engine, power consumption is reduced.

Referring to Fig. 6, the embodiment of the present application also provides a kind of engine checkout and diagnosis device 130, it is applied to extended-range The controller 120 of electric car 100, described device include:

Closedown module 131, for after the operating of the engine of the stroke-increasing electric automobile 100, confirmation have been detected not The default checkout and diagnosis project completed, then stop the fuel supply of the engine.

Drive module 132, for keeping the generator of the stroke-increasing electric automobile 100 to work on to maintain the hair The current rotating speed of motivation.

Recovery module 133 is completed for executing the default checkout and diagnosis project, and in the default checkout and diagnosis project Afterwards, restore the fuel supply of the engine.

It is appreciated that the concrete operation method of each functional module in the embodiment of the present application can refer to above method embodiment The detailed description of middle corresponding steps, it is no longer repeated herein.

The present embodiment also provides a kind of readable storage medium storing program for executing, is stored with computer program in the readable storage medium storing program for executing, The computer program, which is performed, realizes above-mentioned engine checkout and diagnosis method.

In conclusion the embodiment of the present application provides a kind of engine checkout and diagnosis method, apparatus and the electronic vapour of extended-range Vehicle 100, this method is first after the engine operating of the stroke-increasing electric automobile 100, if confirmation has unfinished default inspection Checkup item is surveyed, then stops the fuel supply of the engine.Then it controls the engine to work on, and maintains the hair The revolving speed of motivation is the revolving speed of engine when stopping fuel supply.Finally, unfinished default checkout and diagnosis project is executed, And after the completion of the default checkout and diagnosis project, restore the fuel supply of the engine.In this way, by stopping distance increasing unit The fuel supply of engine, and control engine and continue to rotate, to complete checkout and diagnosis project, guarantee the safety and conjunction of vehicle Rule property.Further, the time point for stopping fuel supply being determined by operation data, to reduce time of engine retard oil-break Number is promoted and drives comfort and reduce vehicle NVH problem.

The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims It is quasi-.