Vehicle low-temperature starting control method and computer readable storage medium

Abstract

The invention provides a vehicle low-temperature starting control method and a computer storable storage. The method includes the steps that power source torque is limited at the low temperature, the power source torque response capacity is reduced in the mode that the slope is smaller through comparison, so that clutch torque which is affected by the low temperature and responds lagging is rematched. Therefore, the problem of starting galloping of the hydraulic control clutch in special environments such as low temperature is solved. According to the method, starting from the torque characteristic of the power source and the hydraulic response characteristic of the clutch, through new control logic, the control complexity is simplified, and calibration and control are easier.

Description

technical field [0001] The invention belongs to the control technology in the field of automobile and vehicle power, and specifically relates to the starting control technology of a hybrid vehicle or a conventional vehicle equipped with a hydraulically controlled clutch automatic transmission (such as DCT) under special conditions such as low temperature and complex environments. Background technique [0002] In the vehicle starting control, in order to solve the problem of speeding under low temperature, the existing control scheme is to control the engine speed to ensure that the engine power source does not run away, which will cause a certain performance loss and cause the vehicle to start due to environmental changes. There are two sets of starting logic to switch, and the control is complicated. Another control scheme is to perform engine torque reduction intervention, and send the engine torque reduction demand to the engine to avoid the engine torque response too fas...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a vehicle starting control method with a hydraulically controlled clutch, which solves the problem of the hydraulically controlled clutch starting overrun or under pressure in special environments such as low temperature. The method starts from the torque characteristics of the power source and the hydraulic response characteristics of the clutch, and proposes a new control logic. Simplify the previous control complexity, easier to calibrate and control

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