JPH0725659Y2 - Driving test pattern creation device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a running test pattern creating apparatus for carrying out a simulated running test of an automobile using a chassis dynamometer.

[0002]

2. Description of the Related Art For example, FIG.
The system configuration is shown in. The test vehicle 1 has its driving wheels 1A mounted on rollers 2, and a dynamometer 3 as a power absorbing means and a flywheel (not shown) are coupled to the rollers 2. The dynamometer 3 is subjected to torque / speed control according to a running test pattern by a control device 4 including a power converter, and the test pattern is given from a programmable controller 5.

The shift position of the transmission of the vehicle under test 1, the clutch, and the accelerator are automatically operated by the actuator section 6 in accordance with commands from the controller 5 and the control device 4. The measuring unit 7 takes in the exhaust gas of the vehicle under test 1,
Gas analysis such as x is performed and the measurement data is obtained. The driving state data of the vehicle under test 1 is given to the generation of the measurement data, and is associated with the running test pattern.

As the running test pattern of the test vehicle 1, 10 mode or LA4 mode as shown in FIG. 4 is determined according to the test contents and rules. In this traveling test pattern, the horizontal axis is generally time or traveling distance, and the vertical axis is vehicle speed.

When the test vehicle is driven with the determined vehicle speed pattern, the gear ratio of the transmission also changes when the vehicle type changes, so the gear shift timing can be changed depending on the vehicle type.

From the above, when the running test is carried out on the chassis dynamometer, the speed value for shifting is changed depending on the vehicle type. In other words, it is necessary to change the gear shift timing according to the vehicle speed of the gear shift to prevent gear squeaking and other obstacles. To achieve this, the following two methods have been conventionally adopted.

(1) Create pattern data in accordance with the shift timing, and set this data in the programmable controller 5.

(2) A shift command is generated when an acceleration or deceleration value reaches the shift vehicle speed by using a device that constantly monitors the shift vehicle speed.

[0009]

The conventional method (1) does not pose a problem when the number of automobiles to be tested is small. However, as the number of automobiles increases, dedicated pattern data is created for each. Therefore, it takes a lot of man-hours to create the pattern data.

On the other hand, in the conventional method (2), a device for monitoring the vehicle speed is required to increase the hardware configuration of the system, and one pattern allows the vehicle speed of the same gear shift position to be slightly changed. It is difficult to use a monitoring device for tests.

An object of the present invention is to provide a device that facilitates the creation of running test pattern data.

[0012]

In order to solve the above-mentioned problems, the present invention installs a vehicle to be simulated driving test on a chassis dynamometer, and drives the chassis dynamometer and the vehicle in a driving pattern mode and a driving pattern mode. In the system that controls according to the pattern data for each vehicle type,
A drive pattern mode storage unit that stores the drive pattern mode for each mode, a shift table storage unit that stores a shift table that sets a shift position of a transmission for each vehicle type and drive pattern mode of the vehicle, and a test mode for the vehicle The corresponding traveling pattern mode data is read from the traveling pattern mode storage unit according to the designation, the corresponding shift table is read from the shift table storage unit according to the vehicle type designation and the test mode designation of the automobile, and a set of both data is read. It is characterized in that a processing unit for creating the pattern data by combining is provided.

[0013]

The pattern setting data is created for each vehicle type by separately setting the traveling pattern mode data and the shift position data, and setting the running pattern as the basic mode and combining the shift position data with the pattern data to create the pattern data. In addition to reducing the number of man-hours required to create data, additional changes such as variations in the creation of pattern data can be made on the shift table side.

[0014]

1 is a block diagram showing an embodiment of the present invention. The traveling pattern mode storage unit 11 has 10 modes or LA.
The data of the traveling pattern modes of the four modes is stored for each mode, and the setting and storage of any traveling pattern mode is enabled.

The shift table storage unit 12 stores a shift table for each vehicle type and each driving pattern mode.
The processing unit 13 inputs the vehicle type of the test vehicle and the test mode designation as setting data at the time of the test, and stores the data of the driving pattern mode corresponding to the test mode designation in the storage unit 11.
At the same time, the shift table corresponding to the vehicle type designation and the test mode designation is read from the storage unit 12, and the pattern data 14 is created and output from both read data.

The gear change table stored in the gear change table storage unit 12 does not have one table data for one vehicle type as illustrated in FIG. It has more than one kind of table data. Further, in each shift table, the traveling speed is set for each acceleration / deceleration time and each shift position in the mode.

Further, the processing unit 13 creates pattern data for each top gear when the top gear is designated as shown in the table below for the difference in the number of gears of the transmission even in the same vehicle type.

[0018]

[Table 1]

In the pattern data creation according to the present embodiment, the corresponding traveling pattern mode is read from the storage unit 11 by designating the test mode to the processing unit 13, and from the shift table storage unit 12 according to the combination of this mode and the vehicle type designation. Read the corresponding speed change table, combine this speed change table with the driving pattern mode, and further set 1 for each top gear.
One pattern data 14 is created.

Therefore, the running pattern mode and the shift table are stored separately, and the test vehicle is set by defining the basic pattern of the running pattern mode, setting the shift table for each vehicle type, and setting the transmission top position for each vehicle type. Individual pattern data can be created automatically.

Further, since the traveling pattern mode and the shift table are separated, the number of steps is greatly reduced as compared with the conventional case of creating pattern data according to the shift timing as in (1).

Further, unlike the conventional case (2), the monitoring device for monitoring the speed change vehicle speed is not required, and the device configuration can be a software configuration.

Further, in the case where the speed change vehicle speed at the same speed change position is changed to some extent, only a new table in which the data is changed is added to the speed change table, and the pattern data can be easily changed. Become.

[0024]

As described above, according to the present invention, the driving pattern mode data and the shift position data are separately stored, and the pattern data is automatically created according to the combination of the vehicle type and the test mode of the test vehicle. Therefore, it is easy to create pattern data specific to the test vehicle,
Moreover, there is an effect that the pattern data can be easily added and changed.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a shift table in the embodiment.

FIG. 3 is a chassis dynamometer system.

FIG. 4 is a diagram showing an example of an exhaust gas analysis operation pattern.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Test vehicle 4 ... Control device 5 ... Programmable controller 11 ... Running pattern mode storage unit 12 ... Shift table storage unit 13 ... Processing unit

Claims (1)

[Scope of utility model registration request] 1. A system in which a vehicle to be subjected to a simulated running test is installed in a chassis dynamometer, and the driving operation of the chassis dynamometer and the vehicle is controlled according to a running pattern mode and pattern data classified by vehicle type. A driving pattern mode storing section for storing each mode, a shift table storing section for storing a shift table in which a shift position of a transmission is set for each vehicle type and driving pattern mode of the vehicle, and the vehicle according to a test mode designation of the vehicle. The corresponding traveling pattern mode data is read from the traveling pattern mode storage unit, the corresponding shift table is read from the shift table storage unit according to the vehicle type designation and the test mode designation of the automobile, and the pattern data is obtained by combining the both data. With a processing unit that creates An apparatus for creating a driving test pattern characterized by: