JP2000258304A - Apparatus for inspecting wrong setting of transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correctly inspect whether a transmission loaded to a vehicle is a normal transmission or not. SOLUTION: The apparatus for inspecting wrong setting of a transmission which judges whether the transmission mounted to an engine output side of a vehicle is a normal one or not has a revolution number-detecting means (step 101) for detecting an engine revolution number and a correspondence between the engine revolution number and a vehicle velocity, a comparing means (step 102) for comparing a reference value of the correspondence preliminarily set corresponding to a transmission gear ratio of the normal transmission with the correspondence detected by the revolution number-detecting means, and a judging means (steps 103 and 104) for judging on the basis of the comparison result of the comparing means (step 102) whether or not the set transmission is a normal transmission.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection apparatus for determining whether or not a transmission mounted on the output side of a driving force source of a vehicle is a proper transmission to be mounted on the vehicle. It is about.

[0002]

2. Description of the Related Art Generally, in a vehicle equipped with an engine as a driving force source, a transmission is mounted on an output side of the engine in order to change the driving force according to the running state of the vehicle. In this transmission, different types of transmissions are mounted based on the standard specifications and option settings of the vehicle. These different types of transmissions have the same number of stepped transmissions that can be set in the forward gear and the same number of gears that can be set in the forward gear. This also includes a stepped transmission in which the gear ratio set at each gear is different.

[0003] As described above, in order to improve the productivity of the vehicle, the assembling structure of the engine and the transmission is shared, and the appearance of the transmission is almost the same, even if the transmissions are of different types. May be designed. For this reason,
In a vehicle assembling process, there is a possibility that a transmission other than a proper transmission to be mounted on a predetermined vehicle is erroneously mounted on the vehicle. The presence or absence of such erroneous assembling of the transmission is performed in an inspection process subsequent to the assembly process.

By the way, even if transmissions of different types as described above have the same external appearance and the same structure for assembling with the engine, the type of each transmission is changed from the external appearance in the inspection process. I can't judge. Therefore, usually, a part number representing the type of the transmission is stamped and displayed on the surface of a casing as an outer shell member of the transmission, and the inspection step (engine room inspection step or underbody inspection step) is performed. By visually checking the embossed product number from outside the transmission, the type can be determined. Incidentally, in the inspection process, an example of an inspection device for inspecting erroneous assembly of vehicle parts is disclosed in Japanese Patent Laid-Open No. 6-194.
269 and JP-A-8-166326.

[0005]

However, when the transmission is mounted on a vehicle, the transmission is close to a part of the vehicle body (for example, a dash panel) and various kinds of parts are located above the transmission. Engine parts are arranged. For this reason, in either the case where the stamped part number of the transmission is visually observed from the engine room side in the engine room inspection step or the case where the stamped part number is visually observed from the lower side of the vehicle body in the underbody inspection step, The vicinity is dark and the inspector's view may be obstructed by a part of the vehicle body or various parts. As a result, there is a possibility that the inspector mistakes the stamped part number for an inspection error. Also, even if it is possible to reliably see the embossed product number,
The inspector may incorrectly memorize the stamped part number corresponding to the legitimate transmission, and check the incorrect stamped part number with the stamped part number displayed on the transmission, resulting in an inspection error. Could occur.

[0006] The present invention has been made in view of the above circumstances, and it is an object of the present invention to accurately inspect whether a transmission mounted on a vehicle is a proper transmission to be mounted on the vehicle. It is an object of the present invention to provide a transmission assembling inspection device capable of performing the above-mentioned.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a transmission which is mounted on the output side of a driving force source of a vehicle, wherein the transmission is a regular transmission to be mounted on the vehicle. In the erroneous assembly inspection device of the transmission to determine whether or not, the output rotation speed of the driving force source,
A rotational speed detecting means for detecting a correspondence relationship between the output rotational speed of the driving force source and a physical quantity related to the output rotational speed of the assembled transmission; and A comparison unit that compares a reference value of the correspondence set in advance with the correspondence detected by the rotation speed detection unit, and based on a comparison result of the comparison unit, the assembled transmission includes: Determining means for determining whether or not the transmission is an authorized transmission.

Here, the physical quantity related to the output speed of the transmission includes the output speed itself of the transmission and the vehicle speed obtained from the output speed. Further, the transmission of the present invention includes a transmission and a final gear capable of changing a ratio between an input rotation speed (input rotation speed) and an output rotation speed (output rotation speed).

According to the present invention, the correspondence between the output rotation speed of the driving force source and the physical quantity related to the output rotation speed of the assembled transmission corresponding to the output rotation speed of the driving force source is detected. The reference value of the relationship is compared with the actually detected correspondence. Then, based on the comparison result, it is determined whether the assembled transmission is a normal transmission. That is, the correspondence between the output rotation speed of the driving force source and the physical quantity related to the output rotation speed of the transmission is uniquely determined by the speed ratio of the transmission. By comparing the measured value with the actually measured value, it is possible to accurately determine whether or not the transmission mounted on the vehicle is a proper transmission based on the function of the transmission.

[0010]

Next, the present invention will be described more specifically with reference to the drawings. FIG. 2 is a block diagram showing a vehicle system to which the present invention is applied. The embodiment in FIG. 2 is intended for a so-called FF (front-wheel-drive system with an engine) vehicle. That is, the engine 2 is mounted on the front of the vehicle 1. Examples of the engine 2 include an internal combustion engine such as a gasoline engine, a diesel engine, and an LPG engine. Engine 2
Has a known structure including an intake / exhaust device, a lubrication device, a cooling device, a fuel device, an exhaust device, and the like.

A transaxle 3 is mounted on the output side of the engine 2. This transaxle 3
Is a unit in which the transmission 4 and the final reduction gear 5 are assembled in a single casing. The transmission 4 has a known structure such as an input shaft, a gear transmission mechanism, and an output shaft (neither is shown). The type of the transmission 4 is displayed on a surface of a casing as an outer shell member of the transaxle 3 by display means (not shown). The display means includes a stamped part number engraved on the surface of the casing, a label attached to the surface of the casing, and characters and symbols written on the surface of the casing with ink.

Even if the transmission 4 is of a different type, the appearance of the casing of the transaxle 3 and the connection structure between the casing and the engine 2 are shared for the purpose of improving productivity. May be. Here, as the different types of transmissions, there are a stepped transmission in which the number of shift stages (speed ratios) that can be set in the forward gear and a gear stage that can be set in the forward gear are different. An example is a stepped transmission in which the number of gears is the same but the speed ratio set in each gear is different.

The input shaft (not shown) of the transmission 4 is connected to the crankshaft (not shown) of the engine 2, and the output shaft (not shown) of the transmission 4 is connected to the final reduction gear 5. It is connected. Further, the torque output from the final reduction gear 5 is transmitted to the front wheels 6 via a drive shaft (not shown).
It is configured to be transmitted to.

On the other hand, the vehicle 1 is equipped with an engine electronic control unit (engine ECU) 7. The engine electronic control device 7 mainly includes a central processing unit (CPU), storage devices (RAM, ROM), and an input / output interface. Signals such as an accelerator opening, a throttle opening, an engine speed, an engine coolant temperature, an intake air temperature, an exhaust temperature, and an output speed of the transmission 4 are input to the engine electronic control device 7 as control data. ing. Also, the engine electronic control unit 7
And a terminal 8 for performing data communication with an external device (described later) of the vehicle 1.

Here, the correspondence between the configuration of this embodiment and the configuration of the present invention will be described. That is, the engine 2 corresponds to the driving force source of the present invention, and the engine speed corresponds to the output speed of the driving force source of the present invention.

Incidentally, in the manufacturing plant of the vehicle 1,
In the assembling process, various components including the engine 2, the transaxle 3, the front wheels 6, the engine electronic control unit 7, and the like are mounted on the vehicle 1 to complete the vehicle. This completed vehicle is inspected in the post-assembly process, after which the various components are installed, whether or not the components are present, whether or not the components are genuine, and whether or not there is a malfunction or failure in the function of the system. Inspections such as are performed.

Whether the transaxle 3 mounted on the vehicle 1, specifically, the transmission 4, is a genuine product to be mounted on the vehicle 1 is determined by an engine room inspection process or undercarriage. In the inspection process, the inspection is performed by visually confirming the above-mentioned display means. In this embodiment, the type of the transmission 4 is inspected in the drum inspection step and the diagnosis inspection step.
Hereinafter, a method of determining the type of the transmission 4 in the drum inspection step and the diagnosis inspection step and inspecting the erroneous assembly thereof will be described with reference to the flowchart of FIG.

First, in the drum inspection step (known stationary traveling inspection step) of the inspection steps, a traveling function inspection of the vehicle 1 is performed (step 101). In this step 101, the vehicle 1 is controlled to have a vehicle speed of zero to 100 km / km.
h, and every 5 km / h of vehicle speed,
The engine speed (rpm) corresponding to each vehicle speed is measured as shown in FIG. 3, and the measured data is stored in the engine electronic control unit 7. Here, the vehicle speed is calculated based on, for example, the output speed of the transmission 4, the reduction ratio of the final reduction gear 5, and the radius of the front wheels 6.

Further, the vehicle 1 proceeds to a diagnosis inspection step after the drum inspection step. FIG. 4 is an image diagram showing a diagnosis inspection step. In the diagnosis inspection step, a failure or abnormality of the control system or function of the vehicle is diagnosed. In the diagnosis inspection process shown in FIG. 4, a diagnosis inspection device 9 as an external device of the vehicle 1 is provided.
The diagnosis inspection device 9 is a central processing unit (C
PU) and storage devices (RAM, ROM) and an input / output interface. In this storage device, data and information necessary for the inspection are stored in advance,
It is also possible to input data with the input device 10.

Then, a sensor or an electric wire is connected to each system or component of the vehicle 1 to extract a signal, and the signal is processed by the diagnosis inspection device 9, whereby abnormality or failure of the system or component is diagnosed. In this embodiment, a terminal 11 on the diagnosis inspection device 9 side,
By connecting the terminal 8 on the engine electronic control device 7 side, data communication between the engine electronic control device 7 and the diagnosis inspection device 9 is possible.

On the other hand, a production instruction device (ALC; assembly line control system) 12 is connected to the diagnosis inspection device 9 so that data communication between the diagnosis inspection device 9 and the production instruction device 12 is possible. It is. From the production instruction device 12, data relating to the standards and standards for the vehicle carried in the diagnosis inspection process, such as the vehicle body number of the vehicle, standard specifications, options, engine model, type of transmission to be mounted, etc. The data is entered.

Further, data corresponding to the type of each transmission, specifically, a standard (reference value) as shown in FIG. 3 is input from the input device 10. That is, for a plurality of types of transmissions having different gear ratios that can be set,
For each transmission, the correspondence between engine speed and vehicle speed is
For example, the data is input as data classified every 5 km / h. In this standard, the range of the engine speed corresponding to the gear ratio set at each vehicle speed is set.

In the diagnosis inspection process, actual data measured in the drum inspection process is compared with a preset standard (step 102). If the reference value and the measured value match, or if the difference between the two values is within a predetermined allowable error range, an affirmative determination is made in step 102 and the transmission 4 actually mounted on the vehicle is determined. Is determined to be the same as the type of the normal transmission to be mounted on the vehicle, that is, it is determined that the transmission is genuine (step 103), and the erroneous assembly inspection of the transmission is terminated.

On the other hand, if a negative determination is made in step 102, the type of the transmission 4 actually mounted on the vehicle is different from the normal transmission to be mounted on the vehicle. That is, it is determined that the transmission is incorrect (step 104), and the erroneous assembly inspection of the transmission ends.

Here, the correspondence between the functional means shown in FIG. 1 and the configuration of the present invention will be described. That is, Step 101 corresponds to the rotation speed detecting means of the present invention, Step 102 corresponds to the comparing means of the present invention, and Step 10 corresponds to
Reference numerals 3 and 104 correspond to the determination means of the present invention.

As described above, according to this embodiment, the correspondence between the engine speed and the vehicle speed is detected, and the actually detected correspondence is compared with a preset reference value. Then, based on the comparison result, it is determined whether the assembled transmission 4 is a normal transmission.

That is, since the correspondence between the engine speed and the vehicle speed is uniquely determined by the speed ratio of the transmission 4, the reference value of this correspondence and the actually measured value are compared. Whether or not the transmission 4 mounted on the vehicle 1 is a proper transmission can be accurately determined based on the function of the transmission 4. Therefore, the inspection accuracy for the erroneous assembling of the transmission is improved, and the product quality of the vehicle 1 can be improved. In addition, since the drum inspection process and the diagnosis inspection process are processes for performing a complete inspection of the completed vehicle, it is possible to prevent an inspection failure due to erroneous assembly of the transmission.

As the physical quantity related to the output rotation speed of the transmission, the output rotation speed itself is exemplified in addition to the vehicle speed. In this embodiment, a continuously variable transmission (CV) capable of continuously (continuously) changing the gear ratio is provided.
In T), those having different settable gear ratios can be classified as different types of transmissions. The stepped transmission and the continuously variable transmission described above include a manual transmission (manual transmission) that can change the gear position by manual operation, and a traveling state of the vehicle, and the detection is performed. And an automatic transmission (automatic transmission) capable of automatically controlling the gear ratio based on the result.

The present invention is also applicable to FR vehicles (vehicles of a front-wheel-drive type with an engine installed). Furthermore, the present invention is also applicable to a vehicle having a configuration in which an electric motor is mounted as a driving force source, and a transmission is connected to an output side of the electric motor. Further, the present invention is also applicable to a vehicle in which the transmission and the final reduction gear are housed in separate casings.

Further, the transmission according to the present invention includes a so-called final reduction gear (final gear). That is, in a vehicle in which any of a plurality of types of final reduction gears having different reduction ratios can be mounted, it is determined whether the final reduction gear mounted on the vehicle is a proper final reduction gear to be mounted on the vehicle. Judgment is also possible. The physical quantity related to the output speed of the final speed reducer is determined by detecting the speed of the drive shaft or axle shaft to which the torque output from the final speed reducer is transmitted, or the speed of the wheels. Is possible.

Here, the characteristic configuration of the present invention disclosed based on the above specific example will be described as follows. That is, in a transmission misassembly inspection device that determines whether a transmission mounted on a vehicle is a proper transmission to be mounted on the vehicle, the transmission speed is related to an input rotation speed of the transmission. Rotation speed detecting means for detecting a correspondence between a physical quantity and a physical quantity related to an output rotation speed of the transmission; and a reference value of the correspondence set in advance corresponding to a speed ratio of the normal transmission. And a comparison unit that compares the correspondence detected by the rotation speed detection unit, and based on a comparison result of the comparison unit, determines whether the assembled transmission is the normal transmission. An erroneous assembly inspection device for a transmission, comprising: a determination unit. Further, in a transmission type determining device for determining the type of a transmission mounted on an output side of a driving power source of a vehicle, the transmission type determining device may correspond to an output rotation speed of the driving power source and an output rotation speed of the driving power source. Type determining means for determining a type of the assembled transmission based on a correspondence relationship with a physical quantity related to an output rotation speed of the assembled transmission. apparatus.

[0032]

As described above, according to the present invention, the correspondence relationship between the output rotation speed of the driving force source and the physical quantity related to the output rotation speed of the assembled transmission corresponding to the output rotation speed of the driving force source. Is detected, and the reference value of the correspondence is compared with the actually detected correspondence. Then, based on the comparison result, it is determined whether the assembled transmission is a normal transmission. That is, the correspondence between the output rotation speed of the driving force source and the physical quantity related to the output rotation speed of the transmission is uniquely determined by the speed ratio of the transmission. By comparing the measured value with the actually measured value, it is possible to accurately determine whether or not the transmission mounted on the vehicle is a proper transmission based on the function of the transmission. Therefore, the inspection accuracy for the erroneous assembling of the transmission is improved, and the product quality of the vehicle can be improved.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a procedure of an erroneous assembly inspection process of a transmission according to the present invention.

FIG. 2 is a block diagram showing a system configuration of a vehicle to which the present invention is applied.

FIG. 3 is an image diagram for comparing measurement data detected in a drum inspection process with a preset standard in the embodiment of the present invention.

FIG. 4 is a conceptual diagram showing a state in which the type of the transmission is inspected in a diagnosis inspection step in the embodiment of the present invention.

[Explanation of symbols]

1 ... vehicle, 2 ... engine, 3 ... transaxle,
4: Transmission.

Claims (1)

[Claims] 1. A erroneous transmission assembling inspection device for determining whether a transmission mounted on an output side of a driving force source of a vehicle is a proper transmission to be mounted on the vehicle, Rotation speed detecting means for detecting a correspondence relationship between an output rotation speed of the driving force source and a physical quantity related to an output rotation speed of the assembled transmission corresponding to the output rotation speed of the driving force source; Comparing means for comparing a reference value of the correspondence set in advance corresponding to the gear ratio of the transmission with the correspondence detected by the rotation speed detecting means; and Determining means for determining whether the assembled transmission is the proper transmission or not.