Auxiliary staring control method and system

Abstract

The invention discloses an auxiliary starting control method and system. The method comprises steps as follows: the position of a clutch switch is adjusted in advance, so that the clutch switch sends a clutch switch signal to an electronic control unit when a clutch pedal is in a calibrated position, namely, the calibrated position 5%-30% of the largest displacement of the clutch pedal. By comparison with a traditional calibrated position, namely, the position 90% of the largest displacement of the clutch pedal, a driver steps on the clutch pedal until the clutch pedal is moved by 5%-30%, a clutch switch circuit is connected with the signal, so that an ECU (electric control unit) starts a control state in advance and can respond to the starting process correctly in advance; when a vehicle is stopped and the electronic control unit receives the clutch switch signal, the vehicle is regarded as in a starting stage, a first increment is increased for a target idle speed, an engine is under idle speed control at an adjusted target idle speed, and the problem that a small-displacement engine is difficult to start is effectively solved.

Description

technical field [0001] The invention relates to the field of clutch control, in particular to a start assist control method and system. Background technique [0002] As energy saving and environmental protection are paid more and more attention, passenger car gasoline engines are developing towards supercharging and miniaturization. However, when the small-displacement engine is at low speed, the supercharger does not work at this time, and the output torque is relatively small, especially in the idling condition, which makes it more difficult for the vehicle to start. [0003] In addition, there are more and more trainee drivers. It is also very common that the accelerator and clutch do not cooperate well or even do not step on the accelerator when driving a manual transmission vehicle, causing the vehicle to stall when starting. [0004] In order to solve the above problems in the prior art, a torque control strategy of a linear clutch position sensor is usually used to i...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a start assist control method and system, which solves the problem that the small displacement engine in the prior art is difficult to start the vehicle

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