vehicle controls

Abstract

A vehicle control device reduces torque in accordance with steering to generate vehicle deceleration, and appropriately reduces torque in accordance with the degree of engagement of an engagement member provided in a power transmission mechanism. A vehicle control device includes an engine (10); an automatic transmission (200) including a torque converter (202) with a lock-up clutch (202f); The tightness of the lock-up control, and when the vehicle is running and the steering angle-related value associated with the steering angle of the steering device is increased, the torque of the engine (10) is reduced to generate vehicle deceleration, Thereby, torque reduction control for controlling the attitude of the vehicle is performed. The controller (50) reduces the torque of the engine (10) according to the tightening degree of the lockup clutch (202f) of the lockup control.

Description

technical field [0001] The present invention relates to a vehicle control device, and more particularly to a vehicle control device that performs engine control to achieve a desired vehicle posture (vehicle behavior). Background technique [0002] Conventionally, when the behavior of the vehicle becomes unstable due to skidding or the like, the behavior of the vehicle is controlled in a safe direction (slip prevention device, etc.). Specifically, when the vehicle is turning, etc., it is detected whether the vehicle has understeered or oversteered, and an appropriate deceleration is applied to the wheels to suppress the understeer or oversteer. [0003] On the other hand, the following vehicle motion control device is also known. Different from the above-mentioned control for improving safety in a running state where the behavior of the vehicle is unstable, for a vehicle in a normal running state, the deceleration is adjusted when turning to adjust the force exerted on the f...

AI Technical Summary

Problems solved by technology

In this case, if the degree of tightening of the lockup clutch changes due to changes in the accelerator opening or vehicle speed when the above-mentioned vehicle posture control is performed, torque reduction suitable for controlling the vehicle posture cannot be performed, and the desired vehicle posture cannot be achieved.

For example, if the tightening degree of the lock-up clutch becomes smaller in vehicle attitude control, torque reduction that is sufficient to control the vehicle attitude cannot be performed

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