Method for improving drivability of finished vehicle

Abstract

The invention discloses a method for improving drivability of a finished vehicle. Corresponding throttle torque pulse spectrums are achieved by the finished vehicle according to different gears, thusthe different gears correspond to the different throttle torque pulse spectrums, and the corresponding throttle torque pulse spectrum is selected according to the current gear to control the engine running area of the finished vehicle. The method for improving drivability of the finished vehicle is economical, specifically, the corresponding throttle torque pulse spectrums are achieved according to the different gears, the engine running area can be controlled, and the high fuel consumption area on the universal characteristics are avoided to achieve the fuel saving purpose. The method for improving drivability of the finished vehicle has excellent emission performance, specifically, the corresponding throttle torque pulse spectrums are achieved according to the different gears, the enginerunning area can be controlled, and the high emission area on the universal characteristics are avoided to achieve the purpose of controlling emission.

Description

technical field [0001] The invention relates to the field of engines, in particular to a method for improving the drivability of a complete vehicle. Background technique [0002] In the current mainstream engine control system, the way to output the throttle torque is through the two-dimensional look-up table of the speed and the throttle opening. This table is called the throttle torque map. [0003] All gear operating conditions use the same map, which is essentially a compromise result for all gear operating conditions. In actual use, although the existing technical solutions can be compatible with all normal operating conditions of the engine, they have not been optimized for subdividing different loads in different gears, and the working conditions between different gears have overlapping areas. According to In the current technical solution, different gears have not been optimized accordingly, resulting in a certain extent, the drivability and economy between differen...

AI Technical Summary

Problems solved by technology

In actual use, although the existing technical solutions can be compatible with all normal operating conditions of the engine, they have not been optimized for subdividing different loads in different gears, and the working conditions between different gears have overlapping areas. According to In the current technical solution, different gears have not been optimized correspondingly, resulting in a certain extent, the drivability and economy between different gears of the engine have not been optimally solved

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