Method and device for shifting gears in manual mode of automatic transmission

Abstract

The invention discloses a method and device for shifting gears in the manual mode of an automatic transmission. When it is detected that the automatic transmission is in the manual mode and the forward gear is engaged, the target gear of the manual gear is obtained, and the target gear is initially confirmed. The driver's demand gear; then based on the relationship between the target gear and the current gear, combined with the transmission input shaft speed, engine idle speed, the maximum speed of the engine running and the maximum speed of the motor running, the target gear Adjust to obtain the driver's actual final demand gear, therefore, the present invention can prevent the engine and the motor from overspeeding, thereby realizing the protection of the engine and the motor during the driver's manual shifting process, and avoiding damage to the engine and the motor.

Description

technical field [0001] The invention relates to the technical field of automatic transmission control for automobiles, and more specifically, to a method and device for shifting gears in a manual mode of an automatic transmission. Background technique [0002] Automatic transmissions generally have two shift modes: automatic mode and manual mode. In the prior art, more attention has been paid to the shifting strategy of the automatic transmission in the automatic mode, but less attention has been paid to the shifting process of the automatic transmission in the manual mode. At present, when the automatic transmission is in the manual mode, manual shifting is carried out entirely based on the driver's shifting experience. In this way, when the driver has less experience in manual shifting, it is easy to have a situation where the speed does not match the gear, thus causing the risk of damage to the engine or motor. For example, the manual mode is gear 1. When the vehicle sp...

AI Technical Summary

Problems solved by technology

In this way, when the driver has less experience in manual shifting, it is prone to the situation that the speed does not match the gear position, resulting in the risk of damage to the engine or motor

For example, the manual mode is gear 1. When the vehicle speed gradually increases and reaches the maximum speed of the engine or motor, if the driver still does not shift gears, the continued increase in vehicle speed may cause the engine or motor to exceed the maximum speed allowed, thereby damaged

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