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Method and device for vehicle starting control

A control method and vehicle technology, which is applied in the direction of control devices, control drives, and vehicle components, can solve problems such as inconsistencies in vehicle starting power performance, and achieve the effects of solving ride comfort problems, mitigating shocks, and humanizing parameters

Active Publication Date: 2021-09-03
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a vehicle starting control method and device, which is used to solve the problem of inconsistent starting dynamic performance of vehicles under different load conditions

Method used

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  • Method and device for vehicle starting control
  • Method and device for vehicle starting control
  • Method and device for vehicle starting control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Such as image 3 As shown, first the vehicle controller detects the current vehicle speed. To measure the speed of the vehicle, a speed sensor can be installed on the vehicle, and the vehicle controller can control the speed signal by querying or interrupting. If the inquiry method is adopted, the vehicle controller continuously receives the speed signal from the speed sensor, and judges whether the vehicle speed is equal to zero.

[0053] If the vehicle speed is not zero, continue to receive the speed signal; if the speed is zero, then start to measure the weight. According to the comparison table of the factory calibrated vehicle weight and the output parameters of the motor (as shown in the above table), the maximum torque output by the motor at start and the response time can be obtained.

[0054] Then it is necessary to judge whether the vehicle is in the starting state. The starting state has two important signs, one is whether the accelerator opening is greater...

Embodiment 2

[0056] Such as Figure 4 As shown, when the vehicle is parked, the weight is measured; then it is judged whether the vehicle is in the starting state; if the vehicle is in the starting state, the controller obtains the maximum value of the motor starting output torque and Response time, and then calculate the target torque and target response time of the motor output according to the throttle opening.

[0057] Compared with Example 1, this method can also solve the technical problem of power consistency, but the look-up table is placed in the starting state of the vehicle, so that the calculation task of the vehicle controller when the vehicle starts becomes larger, and the processing of the vehicle controller There are certain requirements for speed.

[0058] In addition, as a third implementation manner, it is possible to directly calculate or look up a table after the start judgment. If you look up the table, this table should directly obtain the corresponding motor outpu...

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Abstract

The invention provides a vehicle starting control method and device. The implementation steps of the method are as follows: when the vehicle is parked, the vehicle weight is measured; according to the corresponding relationship between the vehicle weight and the maximum output torque of the motor and the response time and the opening of the accelerator, the motor required for the vehicle to start again is calculated. Output the target torque and target response time. By measuring the weight of the vehicle in real time, the real-time load status of the vehicle can be obtained before starting. According to the load condition of the vehicle, the output target torque and response time of the motor can be dynamically adjusted, so as to ensure the consistency of the starting power of the vehicle under any load condition. In this way, on the one hand, it can effectively alleviate the impact on the axle and avoid the problem of axle rattling; on the other hand, it can also effectively solve the problem of passenger comfort. In addition, the vehicle start response time can also be optimized to meet the needs of frequent bus start conditions.

Description

technical field [0001] The invention belongs to the field of vehicle control, and in particular relates to a vehicle starting control method and device. Background technique [0002] At present, most of the hybrid power systems in the passenger car industry have the function of intelligent engine shutdown, and the starting of the vehicle is realized by the motor drive. When the vehicle starts, the motor output target torque is determined according to the accelerator opening percentage multiplied by the maximum value of the motor output torque. Therefore, when the vehicle is calibrated at the factory, the maximum output torque of the motor needs to be calibrated, and the response time can also be calibrated. [0003] Usually, for a vehicle, the maximum output torque and response time of the motor are fixed in the program at the factory, which causes the vehicle to show inconsistent starting power performance under different load conditions. The reason is: the maximum output ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/12B60L2240/26Y02T10/72
Inventor 许盛中
Owner ZHENGZHOU YUTONG BUS CO LTD
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