MT vehicle model engine throttle torque characteristic matching method

Abstract

The invention discloses an MT vehicle model engine throttle torque characteristic matching method. The MT vehicle model engine throttle torque characteristic matching method comprises making a changetendency chart of the complete automobile acceleration along with the vehicle speed under conditions of different throttle opening degrees in a shift in the automobile development early stage, then calculating an engine torque tendency chart which the throttle needs to reach a corresponding complete automobile acceleration, and finally converting the engine torque tendency charts under conditionsof different throttles into throttle torque characteristic calibration data which an ECU can directly read and write according to a throttle torque characteristic calculating method in the ECU. According to the invention, the case that the throttle torque characteristic matching work is carried out repeatedly in the project development process is avoided, the project development period is shortened, and an unified power performance style of automobile manufacturers can be formed.

Description

technical field [0001] The invention relates to the technical field of vehicle engine throttle torque characteristic matching, and more specifically relates to a method for matching engine throttle torque characteristic of an MT (Mechanical Transmission, manual transmission) model. Background technique [0002] For various reasons such as environmental protection, economy, and handling, mechanical accelerator pedals are gradually replaced by electronic accelerator pedals. The traditional mechanical accelerator pedal directly connects the accelerator pedal to the throttle with a thin steel cable, and the depth of the accelerator pedal is linearly corresponding to the opening of the engine throttle. The electronic accelerator pedal does not have a pull wire. By installing a voltage sensor in the accelerator pedal, the voltage sensor inputs the accelerator pedal opening signal to the ECU (Engine Control Unit), and finally the ECU controls the opening of the engine throttle. Th...

AI Technical Summary

Problems solved by technology

Through matching, the engine can output any torque that the engine can achieve at any point when the accelerator pedal is stepped on. There may also be a strong sense of frustration in

[0003] At present, most automobile manufacturers match the accelerator torque characteristics based on subjective evaluation experience combined with reference vehicles. There is no systematic objective quantitative index, and everyone’s subjective preferences cannot be completely consistent. The accelerator torque characteristic matching work is in the project development process. Frequent back and forth, waste of manpower, material resources and development cycle

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