CN116358894A - Method, device and system for detecting clutch operability of automobile - Google Patents

Abstract

The invention relates to a detection method for automobile clutch handling performance, which comprises the following steps: using a first displacement sensor to measure the displacement of the vehicle clutch pedal, using a second displacement sensor to measure the displacement of the whole vehicle, and using a third displacement sensor to measure the clutch release rocker Displacement; Utilize data analysis computer, according to the displacement of described vehicle clutch pedal and the displacement of described whole vehicle, draw the vehicle start joint point curve, according to the displacement of described vehicle clutch pedal and the displacement of described clutch release rocker arm, draw Manipulate system efficiency curves. Due to the use of the first displacement sensor, the second displacement sensor and the third displacement sensor, parameters such as the pedal stroke, sub-cylinder stroke, and starting joint point can be measured together when the vehicle is running, and the collected information can be transmitted to the data through the signal line. Analyzing the computer, so as to calculate and draw the curve of the starting joint point of the vehicle and the efficiency curve of the control system for analysis, reducing the measurement error and potential safety hazard.

Description

A method, device and system for detecting automobile clutch handling performance

technical field

The invention relates to the field of performance detection of an automobile clutch control system, in particular to an automobile clutch control performance detection method, device and system.

Background technique

The current equipment does not have a detection device that can measure parameters such as pedal stroke, sub-cylinder stroke, and starting joint point together when the whole vehicle is running. The technician uses a dynamometer to measure the pedal force, and then uses a tape measure to measure the pedal stroke and clutch. The stroke of the slave cylinder, at the same time, the position of the joint point is judged according to whether the vehicle is moving, and the stroke of the clutch slave cylinder cannot be measured during the operation of the whole vehicle.

However, this measurement method can only measure the maneuverability of the clutch pedal system when the vehicle is at rest. The parameters such as the pedal stroke and the joint point need to be measured multiple times. At the same time, the measurement error is large, the operation is complicated, and there is a safety hazard when measuring the joint point. .

Contents of the invention

The embodiment of the present invention provides a method, device and system for detecting the maneuverability of the automobile clutch, to solve the problem that in the related art, the maneuverability of the clutch pedal system can only be measured when the vehicle is stationary, and multiple measurements are required, the measurement error is large, the operation is complicated, and there are problems. safety hazard issues.

In the first aspect, a method for detecting the clutch maneuverability of an automobile is provided, which includes the following steps: using a first displacement sensor to measure the displacement of the vehicle clutch pedal, using a second displacement sensor to measure the displacement of the vehicle, and using a third displacement sensor to measure the clutch Displacement of the separation rocker arm; using a data analysis computer, according to the displacement of the vehicle clutch pedal and the displacement of the vehicle, draw the vehicle starting joint point curve, according to the displacement of the vehicle clutch pedal and the displacement of the clutch separation rocker arm Displacement, draw the steering system efficiency curve.

In some embodiments, the detection method further includes: using a pressure sensor to measure the pedal force of the vehicle clutch pedal; using the data analysis computer to map the vehicle clutch pedal according to the displacement and pedal force of the vehicle clutch pedal The force-stroke relationship curve.

In a second aspect, there is provided a device used in the above-mentioned method for detecting the clutch maneuverability of an automobile, which includes: a first displacement sensor, which is used to be fixed inside the vehicle, and the first displacement sensor is used to measure the position of the clutch pedal of the vehicle. Displacement; the second displacement sensor, which is used to be fixed on the outside of the vehicle body, and the second displacement sensor is used to measure the displacement of the vehicle; the third displacement sensor, which is used to be fixed on the gearbox housing, and the third displacement sensor is used to measure the displacement of the whole vehicle; The sensor is used to measure the displacement of the clutch separation rocker arm; the data analysis computer is connected to the first displacement sensor, the second displacement sensor and the third displacement sensor by its signal, and the data analysis computer is used to The displacement of the clutch pedal and the displacement of the whole vehicle are used to draw a vehicle start joint point curve, and the steering system efficiency curve is drawn according to the displacement of the vehicle clutch pedal and the displacement of the clutch release rocker arm.

In some embodiments, the vehicle clutch maneuverability detection device also includes a pressure sensor, the pressure sensor is used to be fixed on the vehicle clutch pedal, the pressure sensor is electrically connected to the data analysis computer, and the data analysis computer The method is used for drawing the force-travel curve of the clutch pedal of the vehicle according to the displacement and pedal force of the clutch pedal of the vehicle.

In some embodiments, the first displacement sensor is a rod-type displacement sensor, and the rod of the first displacement sensor is used to connect to the clutch pedal of the vehicle.

In some embodiments, the first displacement sensor is used to be fixed on the steering wheel of the car through a snap ring, and the pull rod is connected to the pull ring of the pressure sensor through a hook.

In some embodiments, the second displacement sensor is attracted to the outside of the vehicle door through a magnet.

In some embodiments, both the second displacement sensor and the third displacement sensor are laser displacement sensors.

In a second aspect, there is provided a system for the above-mentioned detection method of automobile clutch maneuverability, which includes: a first processing module, which is used to draw data measured by the first displacement sensor and the second displacement sensor The vehicle starting combination point curve; the second processing module, which is used to draw the steering system efficiency curve according to the data measured by the first displacement sensor and the third displacement sensor.

In some embodiments, the detection system further includes a third processing module, and the third processing module is used to draw a relationship curve between clutch pedal force and stroke of the vehicle according to the data measured by the pressure sensor and the first displacement sensor.

The beneficial effects brought by the technical solution provided by the invention include:

The embodiment of the present invention provides a method, device and system for detecting the clutch handling performance of an automobile. Since the first displacement sensor, the second displacement sensor and the third displacement sensor can be used to calculate the pedal stroke, sub-cylinder stroke, starting Measure the combination point and other parameters together, and transmit the collected information to the data analysis computer through the signal line, so that the vehicle starting combination point curve and the control system efficiency curve can be calculated and drawn for analysis, which reduces the measurement error and simplifies the operation The process reduces potential safety hazards and realizes vehicle dynamic clutch performance testing. It can conveniently and safely measure the clutch joint point of the vehicle, and at the same time output the mechanical efficiency of the clutch control system.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is the flow chart of the automobile clutch maneuverability detection method that the embodiment of the present invention provides;

Fig. 2 is the assembly diagram of the automobile clutch maneuverability detection device provided by the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an automobile clutch maneuverability detection system provided by an embodiment of the present invention;

Fig. 4 is a schematic diagram of a measurement result curve provided by an embodiment of the present invention.

Labels in the figure:

1. Automobile steering wheel; 2. First displacement sensor; 3. Pull rod; 4. Vehicle clutch pedal; 5. Pressure sensor; 6. Second displacement sensor; 7. Third displacement sensor; 8. Gearbox housing; 9. Clutch separation rocker arm; 10. Clutch cylinder; 11. Clutch; 12. Data analysis computer; 13. Force-stroke relationship curve; 14. Vehicle starting joint point curve; 15. Control system efficiency curve.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The embodiment of the present invention provides a method, device and system for detecting the maneuverability of the automobile clutch, which can solve the problem that in the related art, the maneuverability of the clutch pedal system can only be measured when the vehicle is stationary, and multiple measurements are required, the measurement error is large, and the operation is complicated. , there are security risks.

Referring to Fig. 1 and shown in Fig. 2, a kind of automobile clutch maneuverability detection method that the embodiment of the present invention provides, it can comprise the following steps: utilize first displacement sensor 2 to measure the displacement of vehicle clutch pedal 4, utilize second displacement sensor 6. Measure the displacement of the whole vehicle, and use the third displacement sensor 7 to measure the displacement of the clutch release rocker arm 9; use the data analysis computer 12 to draw the vehicle starting joint point according to the displacement of the vehicle clutch pedal 4 and the displacement of the vehicle Curve 14 draws a steering system efficiency curve 15 according to the displacement of the vehicle clutch pedal 4 and the displacement of the clutch release rocker arm 9 .

In this embodiment, when the whole vehicle is running, by utilizing the first displacement sensor 2 to measure the displacement of the vehicle clutch pedal 4, utilizing the second displacement sensor to measure the displacement of the vehicle, and utilizing the third displacement sensor 7 to measure the displacement of the clutch release rocker 9 Displacement, the ratio of the measured displacement of the clutch release rocker arm 9 to the displacement of the vehicle clutch pedal 4 is the efficiency of the clutch control system. The control system efficiency curve 15 can be drawn according to the measured data. The stroke of the vehicle clutch pedal 4 recorded when the vehicle is moving is The clutch joint point when the whole vehicle is started can be drawn according to the measurement data to draw the vehicle start joint point curve 14. Through the above method, parameters such as the pedal stroke, the cylinder stroke, and the start joint point can be measured together when the whole vehicle is running, and through The signal line transmits the collected information to the data analysis computer 12, so that the vehicle starting joint point curve 14 and the control system efficiency curve 15 can be calculated and drawn for analysis, and the measurement error is reduced when the vehicle is running Car safety hazards, one-time detection of multiple data simplifies the operation process.

Referring to Fig. 1, Fig. 2 and Fig. 4, in some embodiments, the detection method may also include: using a pressure sensor 5 to measure the pedal force of the vehicle clutch pedal 4; using the data analysis computer 12, according to The displacement and the pedal force of the vehicle clutch pedal 4 draw the power and stroke relationship curve 13 of the vehicle clutch pedal 4. In this embodiment, when the vehicle is running, the pressure sensor 5 is used to measure the pedal of the vehicle clutch pedal 4 Force, the stroke data of the vehicle clutch pedal 4 collected by the first displacement sensor 2 and the data of the vehicle clutch pedal 4 forces collected by the pressure sensor 5 are processed by a data analysis computer 12, and the force and stroke relationship curve 13 of the vehicle clutch pedal 4 can be drawn. , through the above method, parameters such as the pedal stroke, sub-cylinder stroke, and starting joint point can be measured together when the whole vehicle is running, and the collected information can be transmitted to the data analysis computer 12 through the signal line, so that the vehicle starting can be calculated and drawn. Combining the point curve 14, the control system efficiency curve 15 and the force-travel relationship curve 13 for analysis, the detection reduces the measurement error when the whole vehicle is running, reduces the potential safety hazard of the vehicle, and simplifies the operation by detecting multiple data at one time process.

Referring to Fig. 2 and Fig. 4, a device for the above-mentioned automobile clutch maneuverability detection method provided for an embodiment of the present invention may include: a first displacement sensor 2, which is used to be fixed inside the vehicle, so The first displacement sensor 2 is used to measure the displacement of the vehicle clutch pedal 4; the second displacement sensor 6 is used to be fixed on the outside of the vehicle body, and the second displacement sensor 6 is used to measure the displacement of the vehicle; the third displacement sensor 7 , which is used to be fixed on the gearbox housing 8, the third displacement sensor 7 is used to measure the displacement of the clutch separation rocker arm 9; the data analysis computer 12, its signal is connected to the first displacement sensor 2, the second displacement sensor Two displacement sensors 6 and the third displacement sensor 7, the data analysis computer 12 is used to draw the vehicle starting joint point curve 14 according to the displacement of the vehicle clutch pedal 4 and the displacement of the whole vehicle, and according to the displacement of the vehicle The displacement of the clutch pedal 4 and the displacement of the clutch release rocker arm 9 plot the control system efficiency curve 15 .

In this embodiment, when the whole vehicle is running, by utilizing the first displacement sensor 2 to measure the displacement of the vehicle clutch pedal 4, utilizing the second displacement sensor to measure the displacement of the vehicle, and utilizing the third displacement sensor 7 to measure the displacement of the clutch release rocker 9 Displacement, the ratio of the measured displacement of the clutch release rocker arm 9 to the displacement of the vehicle clutch pedal 4 is the efficiency of the clutch control system. The control system efficiency curve 15 can be drawn according to the measured data. The stroke of the vehicle clutch pedal 4 recorded when the vehicle is moving is The clutch joint point when the whole vehicle is started can be drawn according to the measurement data to draw the vehicle start joint point curve 14. Through the above method, parameters such as the pedal stroke, the cylinder stroke, and the start joint point can be measured together when the whole vehicle is running, and through The signal line transmits the collected information to the data analysis computer 12, so that the vehicle starting joint point curve 14 and the control system efficiency curve 15 can be calculated and drawn for analysis, and the measurement error is reduced when the vehicle is running Car safety hazards, one-time detection of multiple data simplifies the operation process.

Referring to Fig. 2, in some embodiments, the vehicle clutch maneuverability detection device also includes a pressure sensor 5, the pressure sensor 5 is used to be fixed on the vehicle clutch pedal 4, and the pressure sensor 5 is electrically connected to the The data analysis computer 12, the data analysis computer 12 is used to draw the force and stroke relationship curve 13 of the vehicle clutch pedal 4 according to the displacement and the pedal force of the vehicle clutch pedal 4. In this embodiment, in the whole vehicle During operation, by utilizing the pressure sensor 5 to measure the pedal force of the vehicle clutch pedal 4, the stroke data of the vehicle clutch pedal 4 collected by the first displacement sensor 2 and the data of the vehicle clutch pedal 4 forces collected by the pressure sensor 5 are processed by a data analysis computer 12 , the force-stroke relationship curve 13 of the clutch pedal 4 of the vehicle can be drawn, the measurement error is reduced when the vehicle is running, the potential safety hazard of the vehicle is reduced, and the operation process is simplified by detecting multiple data at one time.

Referring to Fig. 2, in some optional embodiments, the first displacement sensor 2 adopts a rod-type displacement sensor, and the rod 3 of the first displacement sensor 2 is used to connect the clutch pedal 4 of the vehicle. In the example, the working principle of the rod-type displacement sensor is to convert the linear mechanical displacement into an electrical signal with a linear or arbitrary functional relationship through the potentiometer element, which is more in line with the movement law of the vehicle clutch pedal 4 and makes the measurement result more accurate. . In other embodiments, other displacement sensors such as drawstring displacement sensors, angular displacement sensors, magnetostrictive displacement sensors, and laser displacement sensors may also be used.

Referring to Fig. 2, in some embodiments, the first displacement sensor 2 is used to be fixed on the steering wheel 1 of the automobile through a snap ring, and the pull rod 3 is connected to the pull ring of the pressure sensor 5 through a hook. Among them, by fixing the first displacement sensor 2 on the automobile steering wheel 1, the automobile steering wheel 1 is located above the vehicle clutch pedal 4, which is more convenient when measuring the displacement of the vehicle clutch pedal 4, and the first displacement sensor 2 and the automobile steering wheel 1 pass through The clasp is fixed, and the pull rod 3 is connected to the pull ring of the pressure sensor 5 through a hook, which is convenient and quick to install and take out.

Referring to Fig. 2, in some embodiments, the second displacement sensor 6 is adsorbed on the outside of the vehicle door by a magnet. The signal can be sensed by the second displacement sensor 6 at the moment of starting to move, and the measurement result is more accurate. The stroke of the vehicle clutch pedal 4 recorded when the vehicle is moving is the clutch joint point when the vehicle is started, and the vehicle start joint can be drawn according to the measurement data. Point Curve 14.

Referring to Fig. 2, in some embodiments, the second displacement sensor 6 and the third displacement sensor 7 both adopt laser displacement sensors. In this embodiment, the laser displacement sensor is a sensor that utilizes laser technology for measurement. Composed of a laser, a laser detector and a measurement circuit, as a new type of measurement equipment, the laser displacement sensor can accurately measure the position, displacement and other changes of the measured object without contact.

During installation, the pressure sensor 5 is fixed on the vehicle clutch pedal 4, the first displacement sensor 2 is connected on the automobile steering wheel 1 by the fixed part through the snap ring, the pull rod 3 is connected on the side pull ring of the pressure sensor 5 by the hook, and the second displacement The sensor 6 is adsorbed on the outside of the vehicle door by a magnet and is aligned with the ground. The third displacement sensor 7 is fixed on the gearbox housing 8 and aligned with the force point of the clutch separation rocker arm 9. The four sensors are all collected through the signal line. The information is transmitted to the data analysis computer 12.

During detection, a pedal force F is applied to the vehicle clutch pedal 4, and the vehicle clutch pedal 4 rotates around a fixed shaft, and the clutch release rocker arm 9 is pushed by the clutch cylinder 10 to move axially, and the clutch is separated; when the clutch pedal force F is gradually reduced At 0, the clutch 11 pushes the clutch release rocker arm 9 to move axially, and through the clutch cylinder 10, pushes the vehicle clutch pedal 4 to rotate around the fixed shaft to the initial position. This device can measure and record the clutch pedal force and stroke of the vehicle, and can conveniently and safely measure the clutch joint point of the vehicle, and can output the mechanical efficiency of the clutch control system at the same time.

Referring to Fig. 3 and Fig. 4, a system for the detection method of the above-mentioned automobile clutch maneuverability may include: a first processing module, which is used to 6. The measured data draws the vehicle starting joint point curve 14; the second processing module is used to draw the control system efficiency curve 15 according to the data measured by the first displacement sensor 2 and the third displacement sensor 7, in this embodiment , the first processing module and the second processing module are located inside the data analysis computer 12, the first processing module is used to process the data of the first displacement sensor 2 and the second displacement sensor 6, and the second processing module is used to process the first displacement sensor 2 and the data of the third displacement sensor 7, by utilizing the first processing module to draw the vehicle starting joint point curve 14 according to the data measured by the first displacement sensor 2 and the second displacement sensor 6, utilizing the second processing module according to the first displacement sensor 2 and the second displacement sensor 2 The data measured by the third displacement sensor 7 draws the control system efficiency curve 15, which can measure parameters such as the pedal stroke, sub-cylinder stroke, and starting joint point together when the whole vehicle is running, and transmit the collected information to the data analysis through the signal line Computer 12, so as to calculate and draw the vehicle starting joint point curve 14 and the control system efficiency curve 15 for analysis, the detection reduces the measurement error when the whole vehicle is running, reduces the potential safety hazard of running away, and detects multiple data at one time The operation process is simplified.

Referring to FIG. 3 , in some embodiments, the detection system may further include a third processing module, which is used to map the vehicle clutch according to the data measured by the pressure sensor 5 and the first displacement sensor 2 . Pedal 4 force and stroke relationship curve 13, in the present embodiment, the third processing module is located in the data analysis computer 12, the first processing module, the second processing module and the third processing module are electrically connected, and the third processing module is used for processing The data of the pressure sensor 5 and the first displacement sensor 2 can be used to measure parameters such as the pedal stroke, the cylinder stroke, and the starting joint point together when the whole vehicle is running, and transmit the collected information to the data analysis computer 12 through the signal line. Thereby, it is possible to calculate and draw the vehicle starting joint point curve 14, the control system efficiency curve 15 and the force-travel relationship curve 13 for analysis, and the detection reduces the measurement error when the whole vehicle is running, reduces the potential safety hazard of running away, and can be used at one time Detecting multiple data simplifies the operation process.

The principles of the automobile clutch handling performance detection method, device and system provided by the embodiment of the present invention are as follows:

The pressure sensor 5 is fixed on the vehicle clutch pedal 4, the first displacement sensor 2 is connected on the automobile steering wheel 1 by the fixed part through the snap ring, the pull rod 3 is connected on the side pull ring of the pressure sensor 5 by the hook, and the second displacement sensor 6 is connected by the The magnet is adsorbed on the outside of the vehicle door and aligned with the ground. The third displacement sensor 7 is fixed on the gearbox housing 8 and aligned with the force point of the clutch release rocker arm 9. The four sensors transmit the collected information through the signal line. Give data analysis computer 12.

Apply the pedal force F on the vehicle clutch pedal 4, the vehicle clutch pedal 4 rotates around the fixed shaft, and the clutch release rocker arm 9 is pushed by the clutch cylinder 10 to move axially, and the clutch is separated; when the clutch pedal force F is gradually reduced to 0 The clutch 11 pushes the clutch release rocker arm 9 to move axially, and through the clutch cylinder 10, the clutch pedal 4 of the vehicle is pushed to rotate around the fixed axis to the initial position. During the process, the whole vehicle is displaced due to the clutch engagement. The displacement of the vehicle clutch pedal 4 is collected by the first displacement sensor 2, the pedal force F applied to the vehicle clutch pedal 4 is collected by the pressure sensor 5, and the axial displacement generated by the clutch release rocker arm 9 is collected by the third displacement sensor 7. The motion state signal is collected by the second displacement sensor 6 .

The ratio of the measured displacement of the clutch release rocker arm 9 to the displacement of the pull rod 3 is the efficiency of the clutch control system. The stroke of the vehicle clutch pedal 4 recorded when the vehicle is moving is the clutch joint point when the vehicle is started. The first displacement sensor 2 collects The pedal stroke data and the pedal force data collected by the pressure sensor 5 are processed by the data analysis computer 12, and the relationship curve between the clutch pedal force and the clutch pedal can be drawn, and the measured displacement of the clutch separation rocker arm 9 collected by the third displacement sensor 7 and the first The displacement data of the vehicle clutch pedal 4 collected by the first displacement sensor 2 is processed by the data analysis computer 12, and the control system efficiency curve 15 can be drawn. The stroke data of the pedal 4 is processed by the data analysis computer 12, and the vehicle start joint point curve 14 can be drawn, which reduces measurement errors and potential safety hazards.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, It can also be an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

It should be noted that in the present invention, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply There is no such actual relationship or order between these entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Accordingly, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. The method for detecting the clutch operability of the automobile is characterized by comprising the following steps of:

the displacement of a clutch pedal (4) of the vehicle is measured by using a first displacement sensor (2), the displacement of the whole vehicle is measured by using a second displacement sensor (6), and the displacement of a clutch release rocker arm (9) is measured by using a third displacement sensor (7);

and drawing a vehicle starting joint curve (14) according to the displacement of the vehicle clutch pedal (4) and the displacement of the whole vehicle by using a data analysis computer (12), and drawing a control system efficiency curve (15) according to the displacement of the vehicle clutch pedal (4) and the displacement of the clutch release rocker arm (9).

2. The method for detecting clutch manipulability of an automobile according to claim 1, wherein the method further comprises:

measuring a pedal force of the vehicle clutch pedal (4) with a pressure sensor (5);

and drawing a force and travel relation curve (13) of the vehicle clutch pedal (4) according to the displacement and pedal force of the vehicle clutch pedal (4) by using the data analysis computer (12).

3. An apparatus for use in the method for detecting clutch drivability of an automobile as claimed in claim 1, comprising:

a first displacement sensor (2) for being fixed to the vehicle interior, the first displacement sensor (2) being for measuring a displacement of a vehicle clutch pedal (4);

a second displacement sensor (6) for being fixed to the outside of the vehicle body, the second displacement sensor (6) being for measuring the displacement of the whole vehicle;

a third displacement sensor (7) for being fixed to the gearbox housing (8), the third displacement sensor (7) being for measuring the displacement of the clutch release rocker (9);

the data analysis computer (12) is in signal connection with the first displacement sensor (2), the second displacement sensor (6) and the third displacement sensor (7), and the data analysis computer (12) is used for drawing a vehicle starting combination point curve (14) according to the displacement of the vehicle clutch pedal (4) and the displacement of the whole vehicle and drawing a control system efficiency curve (15) according to the displacement of the vehicle clutch pedal (4) and the displacement of the clutch release rocker arm (9).

4. A device as claimed in claim 3, wherein:

the automobile clutch operability detection device further comprises a pressure sensor (5), the pressure sensor (5) is used for being fixed on the automobile clutch pedal (4), the pressure sensor (5) is electrically connected to the data analysis computer (12), and the data analysis computer (12) is used for drawing a force and travel relation curve (13) of the automobile clutch pedal (4) according to displacement and pedal force of the automobile clutch pedal (4).

5. A device as claimed in claim 3, wherein:

the first displacement sensor (2) adopts a pull rod type displacement sensor, and a pull rod (3) of the first displacement sensor (2) is used for being connected with the vehicle clutch pedal (4).

6. The apparatus as claimed in claim 5, wherein:

the first displacement sensor (2) is used for being fixed on the steering wheel (1) of the automobile through a clamping ring, and the pull rod (3) is connected to the pull ring of the pressure sensor (5) through a hook.

7. A device as claimed in claim 3, wherein:

the second displacement sensor (6) is attracted to the outside of the door of the vehicle by a magnet.

8. A device as claimed in claim 3, wherein:

the second displacement sensor (6) and the third displacement sensor (7) are laser displacement sensors.

9. A system for the method for detecting clutch drivability of an automobile as claimed in claim 1, characterized by comprising:

the first processing module is used for drawing a vehicle starting joint curve (14) according to data measured by the first displacement sensor (2) and the second displacement sensor (6);

a second processing module for plotting a steering system efficiency curve (15) from the data measured by the first displacement sensor (2) and the third displacement sensor (7).

10. The system as recited in claim 9, wherein:

the detection system further comprises a third processing module, wherein the third processing module is used for drawing a force-stroke relation curve (13) of the clutch pedal (4) of the vehicle according to data measured by the pressure sensor (5) and the first displacement sensor (2).

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