Engine torque control method and automobile

Abstract

The invention discloses an engine torque control method suitable for an automobile adopting a dry clutch. The engine torque control method comprises the steps that the target engine rotating speed, the actual engine rotating speed, the target transmission gear and the transmission input shaft rotating speed of the automobile are acquired; the engine torque of the automobile is subjected to proportional element and integral element control according to the actual engine rotating speed, the target transmission gear and the transmission input shaft rotating speed of the automobile, so that the automobile outputs the target engine torque; and proportional element and integral element control is adjusted according to the difference between the actual engine rotating speed and the transmission input shaft rotating speed, and the target transmission gear. According to the scheme aiming at the automobile adopting the dry clutch, under the starting work condition of the automobile at a neutral gear sliding to be accelerated to the first or second gear, stable acceleration of the automobile is ensured through impaction generated in the rotating speed synchronous process of the engine and the clutch.

Description

technical field [0001] The invention relates to automobile power transmission technology, in particular to an engine torque control method and an automobile. Background technique [0002] Dual Clutch Transmission (DCT for short) is a mechanical automatic transmission. Its power is transmitted through two clutches to connect two input shafts. The passive gears of adjacent gears mesh with the gears of the two input shafts. The control of the two clutches realizes the conversion of the transmission ratio without cutting off the power, thereby shortening the shifting time and improving the shifting quality. This gear shifting method is mostly used in hybrid electric vehicles, and has excellent performance and broad application prospects. There are two types of dual clutch transmissions: dry clutch and wet clutch. [0003] In the prior art, in a dual-clutch transmission vehicle, especially a vehicle with a dry clutch, in the start-up condition of coasting from neutral to first ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide an engine torque control method and an automobile, which solves the problem that the engine and the automobile use the dry clutch when the automobile adopts a dry clutch and accelerates to the first gear or the second gear when the vehicle is coasting in neutral. The problem of impact during the clutch speed synchronization process

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