阅读说明：本技术 变速器拨叉在空挡位置移动的诊断方法及装置 (The gearshift fork diagnostic method and device mobile in neutral gear position ) 是由 冯国雨 张蕾 K·施奈德尔 于 2018-05-22 设计创作，主要内容包括：本发明公开了一种变速器拨叉在空挡位置移动的诊断方法及装置,所述方法包括：响应于检测到拨叉回到空挡位置,启动计时器；响应于计时器到期,判断拨叉没有处于空挡位置；以及触发拨叉在空挡位置移动故障。(The invention discloses a kind of gearshift fork diagnostic methods and device mobile in neutral gear position, which comprises in response to detecting that shift fork returns to neutral gear position, starts timer；It expires in response to timer, judges that shift fork is not on neutral gear position；And triggering shift fork is in the mobile failure of neutral gear position.)

1. a kind of gearshift fork is when being not received by shifting commands in the diagnostic method that neutral gear position is mobile, comprising:

In response to detecting that shift fork returns to neutral gear position, start timer；

It expires in response to timer, judges that shift fork is not on neutral gear position；And

Shift fork is triggered in the mobile failure of neutral gear position.

2. according to the method described in claim 1, further include:

In response to judging that shift fork is not on neutral gear position, it is incremented by failure counter；

Judge whether the failure counter reaches threshold value；

And wherein, the triggering shift fork is in response to reach threshold value execution in failure counter in the mobile failure of neutral gear position.

3. according to the method described in claim 1, wherein, detecting whether shift fork returns to neutral gear position using shift fork position sensor It sets and judges whether shift fork is in neutral gear position.

4. according to the method described in claim 1, wherein, the triggering shift fork includes: in the mobile failure of neutral gear position

Entering vehicle includes the functional safety mode prohibited axis or prohibit gear.

5. according to the method described in claim 1, wherein, the method is executed by transmission control unit.

6. a kind of gearshift fork is when being not received by shifting commands in the diagnostic device that neutral gear position is mobile, comprising:

Shift fork position detecting module, is configured as whether detection shift fork returns to neutral gear position；

Timer module is configured to respond to detect that shift fork returns to neutral gear position, starts timer；

The shift fork position detecting module is additionally configured to expire in response to timer, judges that shift fork is in neutral gear position；And

Failure trigger module is configured as triggering shift fork in the mobile failure of neutral gear position.

7. device according to claim 6, further includes:

Failure counter module is configured to respond to judge that shift fork is not on neutral gear position, is incremented by failure counter；

And wherein, the failure trigger module is additionally configured to judge whether failure counter reaches threshold value, and the triggering is dialled It pitches and is in response in the mobile failure of neutral gear position in judge that failure counter reaches what threshold value executed.

8. device according to claim 6, wherein the shift fork position detecting module is examined using shift fork position sensor Survey whether shift fork returns to neutral gear position and judge whether shift fork is in neutral gear position.

9. device according to claim 6, wherein the failure trigger module is configured as triggering shift fork in neutral gear position Moving failure includes:

The failure trigger module is configured as entering vehicle including the functional safety mode prohibited axis or prohibit gear.

10. device according to claim 6, wherein described device is realized by transmission control unit.

Technical field

The present invention relates to automotive fields, in particular to a kind of gearshift fork diagnosis side mobile in neutral gear position Method and device.

Background technique

Double-clutch speed changer is to realize self shifter based on two clutches and shifting-fork gear-shifting device.Double clutch becomes Fast device is provided simultaneously with the characteristics of efficient transmission efficiency and comfort, is able to achieve unremitting power output.Double-clutch speed changer It is related to mechanical, electrical, liquid integrated control technology.Pass through the sensors such as gas pedal, speed and the data of other control modules Input, transmission control unit (TCU) calculate target gear, and hydraulic control system (HCU), which passes through, controls corresponding solenoid valve, Corresponding oil pressure access is established, so that shift fork be pushed to realize the purpose put into gear.

Shift fork position is obtained by the shift fork position sensor in dual-clutch transmission, thus judge to put into gear successfully or Failure.Shift fork position sensor detects the position of shift fork, and transmission control unit is become according to current shift fork position The control of fast case.Accurate shift fork position is most important to the control of speed changer.Due to mechanical breakdown etc., it may appear that becoming When fast device does not issue shifting commands, the shift fork situation mobile from neutral gear position causes shift of transmission to fail.Using shift fork In the other kinds of speed changer (such as AMT) for realizing shift, it also will appear similar situation.

As it can be seen that needing in the art a kind of for diagnosing the gearshift fork solution mobile in neutral gear position.

Summary of the invention

In one aspect of the invention, a kind of gearshift fork is provided when being not received by shifting commands in neutral gear position Set mobile diagnostic method, comprising: in response to detecting that shift fork returns to neutral gear position, start timer；It is arrived in response to timer Phase judges that shift fork is not on neutral gear position；And triggering shift fork is in the mobile failure of neutral gear position.

In another aspect of the invention, a kind of gearshift fork is provided when being not received by shifting commands in neutral gear The mobile diagnostic device in position, comprising: shift fork position detecting module is configured as whether detection shift fork returns to neutral gear position； Timer module is configured to respond to detect that shift fork returns to neutral gear position, starts timer；The shift fork position detection Module is additionally configured to expire in response to timer, judges that shift fork is in neutral gear position；And failure trigger module, it is configured It is triggering shift fork in the mobile failure of neutral gear position.

The gearshift fork of embodiment according to the present invention is when being not received by shifting commands in neutral gear position movement Diagnosis solution effectively can diagnose and handle gearshift fork and move when being not received by shifting commands in neutral gear position Dynamic failure, and the generation of error diagnosis is reduced or eliminated, to improve travel safety.

Detailed description of the invention

Fig. 1 shows a kind of gearshift fork of embodiment according to the present invention when being not received by shifting commands in sky Gear sets mobile diagnostic method；And

Fig. 2 shows a kind of gearshift fork of embodiment according to the present invention when being not received by shifting commands in sky Gear sets mobile diagnostic device.

Specific embodiment

The embodiment of the present invention is described with reference to the accompanying drawings.In the following description, numerous specific details are set forth so as to Person of ordinary skill in the field is set to be appreciated more fully and realize the present invention.But to those of skill in the art Member is it is evident that of the invention realizing can be without some in these details.However, it should be understood that of the invention It is not limited to introduced specific embodiment.On the contrary, it may be considered that with any combination of features described below and element come Implement the present invention, regardless of whether they are related to different embodiments.Therefore, aspect, feature, embodiment and advantage below is only It is illustrative, and it is not to be taken as the element or restriction of claim, unless clearly proposing in the claims.

Referring now to Fig. 1, it illustrates the gearshift forks of embodiment according to the present invention to be not received by shifting commands When the diagnostic method mobile in neutral gear position.The method can for example be executed by transmission control unit (TCU).Such as this field In it is known, TCU is for controlling the device of gearbox in modern vehicle, using from sensors such as speed, gas pedals Signal and signal from control unit of engine (ECU) etc. how and when shift gears to calculate so that vehicle obtains most Best performance, fuel economy and shift quality.TCU generally includes processor, memory, signal processing circuit, power drive mould Block etc..The memory is stored with the software code for the function and operation that specified TCU to be completed, the processor by load and The software code is executed to execute the function of TCU.Therefore, the gearshift fork of embodiment according to the present invention is in neutral gear position Mobile diagnostic method can be for example embodied in the software code, and by load and be executed described soft by the processor Part code executes.

As shown in fig. 1, the gearshift fork of embodiment according to the present invention is when being not received by shifting commands In the mobile diagnostic method of neutral gear position the following steps are included:

Start timer in response to detecting that shift fork returns to neutral gear position in step 101.In some exemplary embodiments In, shift fork position sensor can be used to detect whether shift fork returns to neutral gear position.The shift fork position sensor for example may be used To be configured as constantly (for example, every 10 milliseconds) detection shift fork position, and shift fork position detected is passed into TCU.TCU It, can be by being compared with previously received shift fork position after receiving the shift fork position from shift fork position sensor Judge whether shift fork returns to neutral gear position (returning to neutral gear position by position of putting into gear), and is judging that shift fork returns to neutral gear position When, start timer.

The timer can for example be realized in TCU software.In some exemplary embodiments, the timer can be with It is count-down device, with preset timing length.The timing length for example usually can be set as 50-100 milliseconds, And such as can be adjusted according to default value, oil temperature, use experience as TCU or user.By providing the countdown Simultaneously certain timing length is arranged in device, of short duration caused by shift fork being returned to after neutral gear position due to mechanical, hydraulic etc. Fluctuation accounts for, so that the brief fluctuations that will not have just returned to shift fork after neutral gear position are reported by mistake as shift fork in neutral gear position movement Failure.As it can be seen that when the timing length can be set and be adjusted to be slightly larger than the estimated fluctuation after shift fork returns to neutral gear position Between, this can simply be carried out by TCU or user according to default value, oil temperature, use experience etc., and the present invention does not limit this It is fixed.

In step 102, judge whether timer expires, that is, whether has reached the timing length after starting.The step example It can such as be executed by TCU.

In step 103, judge to expire in response to timer, judges whether shift fork is in neutral gear position.Some exemplary In embodiment, shift fork position sensor can be used to judge whether shift fork is in neutral gear position.For example, TCU can be described When timer expires, judge whether shift fork is in neutral gear according to the current shift fork position from shift fork position sensor received Position.

It is incremented by failure counter in response to judging that shift fork is not on neutral gear position in step 104.For example, TCU can be with When judging that current shift fork position is not belonging to neutral gear position (such as shift fork is mobile from neutral gear position), by failure counter plus 1.Institute Stating failure counter can for example realize in TCU software.The failure counter for example can be after vehicle release or repairing It is initially set to zero, and zero can be returned to after the mobile failure of neutral gear position and failure are handled in triggering shift fork.

Correspondingly, if it is determined that shift fork is in neutral gear position, then it is not incremented by failure counter, and is to return to step 101 Before, to continue to test whether shift fork returns to neutral gear position, and in a step 101, in response to detecting that shift fork returns to neutral gear position It sets, starts timer, to start next circulation.

In step 105, judge whether failure counter reaches threshold value.The step can for example be executed by TCU.

The threshold value for example usually may be configured as 3-10.The threshold value for example can be with initial setting up in TCU.It is some into In the exemplary embodiment of one step, the threshold value can be by TCU or user according to initial value, transmission conditions, use experience Etc. factors correspondingly adjust.TCU or user can be used any mode known to those skilled in the art and adjust the threshold value, The present invention does not limit this.

In some exemplary embodiments, the threshold value can be set to 1, and in this case, whenever in step 103 judge that shift fork is not on neutral gear position, then failure counter reaches threshold value, so that it is mobile in neutral gear position to trigger shift fork Failure.In fact, in such embodiments, can there is no the failure counter and the step 104 and step 105, But when step 103 judges that shift fork is not on neutral gear position, directly the triggering shift fork of execution step 106 is moved in neutral gear position Dynamic failure.

By using the failure counter, wrong report shift fork can be further reduced in the hair of the mobile failure of neutral gear position It is raw.Due to machinery etc., shift fork can accidentally occur in the movement of neutral gear position.These occurrent shift forks are in sky Gear set it is mobile may without processing, can self-healing；Only which shift fork that repeated neutral gear position movement, It is only failure to be treated.The setting of failure counter and its threshold value, precisely in order to such case is accounted for.

In step 106, in response to judging that failure counter reaches threshold value, triggering shift fork is in the mobile failure of neutral gear position.Example Such as, TCU can judge whether the failure counter reaches a predetermined threshold after the failure counter adds 1, and in the failure Triggering shift fork is in the mobile failure of neutral gear position when after counter arrival threshold value.

In some exemplary embodiments, the triggering shift fork includes: that vehicle is made to enter packet in the mobile failure of neutral gear position Include the functional safety mode prohibited axis or prohibit gear.The taboo axis participates in subsequent for example including the axis where forbidding the shift fork to break down Gear shift operation, taboo gear participate in subsequent gear shift operation for example including forbidding the shift fork to break down.The step for example can be by TCU is executed.

In other exemplary embodiments, the triggering shift fork may also include at other failures in the mobile failure of neutral gear position Reason mode, for example, issue the user with alarm, stop vehicle driving etc..

In some exemplary embodiments, the speed changer is double-clutch speed changer.

Shifting commands are being not received by above by reference to the gearshift fork that attached drawing describes embodiment according to the present invention When the diagnostic method mobile in neutral gear position, it is noted that above description is merely illustrative, rather than limiting the invention. In other embodiments of the invention, this method can have more, less or different step, and sequence between each step, Comprising can be with described and diagram difference with the relationships such as function.For example, usually multiple steps can be merged into single step, Single step can also be split as multiple steps, etc..

In another aspect of the invention, a kind of gearshift fork is additionally provided when being not received by shifting commands in sky Gear sets mobile diagnostic device.

Fig. 2 shows the gearshift forks of embodiment according to the present invention when being not received by shifting commands in neutral gear position Set mobile diagnostic device 200.In some exemplary embodiments, described device 200 is real by gear box control unit (TCU) It is existing.That is, the function of each module in described device 200 can be advised by the software code stored in the memory of TCU It is fixed, when the processor of TCU loads and executes the software code, the function of each module in described device 200 is executed, thus Constitute each module in described device 200.In addition, the functions or operations of each module in described device 200 correspond to above-mentioned According to each step of the gearshift fork of the embodiment of the present invention in the mobile diagnostic method of neutral gear position, for simplicity, In Be omitted in being described below with the duplicate part details of above description, therefore can refer to above description obtain to described device 200 More detailed understanding.

As shown in Fig. 2, the gearshift fork of embodiment according to the present invention is when being not received by shifting commands in neutral gear The mobile diagnostic device 200 in position comprises the following modules:

Shift fork position detecting module 201, is configured as whether detection shift fork returns to neutral gear position；

Timer module 202 is configured to respond to detect that shift fork returns to neutral gear position, starts timer；

The shift fork position detecting module 202 is additionally configured to expire in response to timer, judges that shift fork is in neutral gear position It sets；And

Failure trigger module 203 is configured as triggering shift fork in the mobile failure of neutral gear position.

In some exemplary embodiments, described device 200 further include:

Failure counter module 204 is configured to respond to judge that shift fork is not on neutral gear position, is incremented by failure meter Number device；

And wherein, the failure trigger module 204 is additionally configured to judge whether failure counter reaches threshold value, and described Triggering shift fork is in response in the mobile failure of neutral gear position in judge that failure counter reaches what threshold value executed.

In some exemplary embodiments, the shift fork position detecting module 201 is detected using shift fork position sensor Whether shift fork returns to neutral gear position and judges whether shift fork is in neutral gear position.

In some exemplary embodiments, the failure trigger module 203 is configured as triggering shift fork in neutral gear position shifting Dynamic failure includes:

The failure trigger module 203 is configured as entering vehicle including the functional safety mode prohibited axis or prohibit gear.

In some exemplary embodiments, the speed changer is double-clutch speed changer.

Shifting commands are being not received by above by reference to the gearshift fork that attached drawing describes embodiment according to the present invention When the diagnostic device mobile in neutral gear position, it is noted that above description is merely illustrative, rather than limiting the invention. In other embodiments of the invention, the gearshift fork can have more, less in the mobile diagnostic device of neutral gear position Or different components, and connection between each component, include, the relationships such as function can be unlike the described.For example, usual one The function that a module executes can also be executed by another module, and multiple modules can be merged into a bigger module, or One module can be split as multiple modules, etc..

The gearshift fork of embodiment according to the present invention is when being not received by shifting commands in neutral gear position movement Diagnosis solution effectively can diagnose and handle gearshift fork and move when being not received by shifting commands in neutral gear position Dynamic failure, and the generation of error diagnosis is reduced or eliminated, to improve travel safety.

The foregoing description to the embodiment of the present invention has been provided for the purpose of illustration and description, there is illustrated permitted The example of more details, such as particular elements and device, to provide a thorough understanding of embodiments of the present invention, purpose is not It is exhausted or the limitation present invention.The each element or feature of specific embodiment is generally not limited to this particular embodiment, but It is interchangeable under applicable circumstances and can uses in other embodiments, even if is not shown or described in detail.This The variation of sample is not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of this invention.In In some example embodiments, it is not described in well known component, structure and well known technology.

Term used herein is only used for the purpose of description specific example embodiments, and is not intended to be restrictive.This Shen Please in each component title be only for sake of convenience depending on, rather than limiting the invention.As it is used herein, on unless It explicitly points out additionally below, otherwise singular " one ", "one" and "the" can also be intended to include plural form.Term " packet Include ", " comprising ", "comprising" and " having " are inclusives, therefore specify the feature, entity, step, operation, element and/or The presence of component, but do not exclude the presence of or other one or more features, entity, step, operation, component, assembly unit and/or its group The addition of conjunction.Step, process and operation described herein is not interpreted to necessarily require them specific with what is discussed or show Sequence executes, and executes sequence unless specifically specified.

When element be referred to as in another element "upper", " being joined to ", " being connected to " or " being coupled to " another element, can Located immediately at, engage, be connected or coupled to other elements, or may exist intermediary element.For describing relationship between element Other words should explain in a similar way (for example, " ... between " and " between directly existing ... ", " adjacent " with " directly It is adjacent " etc.).As used herein, " connection ", " connected " or similar terms, in the case where no other clearly limit, It can refer to any one or more of mechanical connection, electrical connection, communication connection.In addition, as it is used herein, term " and/ Or ", " and/or " include one or more related listed items any and all combinations.

Although describing the embodiment of the present invention above by reference to attached drawing, it will be appreciated by those skilled in the art that above description It is merely illustrative, rather than limiting the invention.The embodiment of the present invention can be carry out various modifications and be deformed, and still fallen within Within the spirit and scope of the present invention, the scope of the present invention is only determined by the appended claims.