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Segmented processing method for torque of starting condition

A processing method and technology for starting working conditions, which are applied in the field of automobile control, can solve the problems of body movement and weak power, and achieve the effects of preventing vehicle movement, realizing smooth excessive torque, and realizing torque segment control.

Active Publication Date: 2020-08-21
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to aim at the defects of the prior art, and provide a method for segmental processing of the starting condition torque which can solve the problems of weak power and body movement under the starting condition

Method used

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  • Segmented processing method for torque of starting condition
  • Segmented processing method for torque of starting condition
  • Segmented processing method for torque of starting condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Taking the manual transmission vehicle as an example, the torque rate MAP table is calibrated by using the control variable method and taking the subjective driving experience as the evaluation method:

[0045] a. 0% accelerator start, that is, control the required torque, slowly lift the clutch, feel the frustration when the clutch is engaged and the starting performance of the vehicle after engagement;

[0046] b. Analyze the data, adjust the torque rate value corresponding to the required torque (assumed to be 20Nm) corresponding to 0% throttle in MAP tables 1 and 2, repeat operation a, and evaluate the frustration when the clutch is engaged and the starting performance after the combination;

[0047] c. Repeat operations a and b until the supervisor feels satisfied and reasonable;

[0048] d. Use 10%, 20%, 30%...100% accelerator to start, repeat steps a, b, and c, and get reasonable torque rate MAP Table 1 and Table 2.

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Abstract

The invention relates to the technical field of automobile control, and particularly relates to a segmented processing method for the torque of a starting condition. The starting stage of a vehicle isdivided into a front section and a rear section, wherein the front section and the rear section are respectively controlled by adopting different torque rising rates; when the vehicle is a manual gear vehicle, the torque rising rate of the front section is less than that of the rear section; when the vehicle is an automatic transmission vehicle, the torque rising rate of the front section is greater than that of the rear section. In the starting stage, different torque rising rates are adopted to achieve segmented control, so that power of different power assemblies can be guaranteed under the starting working condition, meanwhile, smooth transition of torque can be achieved, and vehicle shifting is prevented.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to a method for processing torque segments in starting conditions. Background technique [0002] At the current stage, during the drivability development process of traditional models, the development goal of starting quality is becoming more and more stringent. For manual transmission models, the operation of releasing the clutch and stepping on the accelerator has become the most common starting condition. Get a good acceleration feeling; for automatic transmission models, loosening the brake and stepping on the accelerator is a common starting condition. Body movement occurs when the accelerator pedal is stepped on. [0003] In the starting condition, the driver has conflicting demands on the power output, resulting in weak power or body movement in the performance of the vehicle in the starting condition. Contents of the invention [0004] The object of the prese...

Claims

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Application Information

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IPC IPC(8): B60W30/18B60W30/188B60W10/06
CPCB60W30/18027B60W30/1882B60W10/06B60W2710/0666
Inventor 刘仁龙王冬汪侃喻骏石月
Owner DONGFENG MOTOR CORP HUBEI
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