Controls for engines with turbochargers

Abstract

The present invention provides a control device for an engine with a turbocharger capable of suppressing deterioration of acceleration response in an engine with a turbocharger and controlling the engine so that the vehicle behavior intended by the driver can be accurately realized. It has: a basic target torque determination unit (61), which determines the basic target torque based on the running state of the vehicle including the operation of the accelerator pedal; a torque reduction amount determining unit (63), which determines the basic target torque based on the running state of the vehicle other than the operation of the accelerator pedal. Determine the amount of torque reduction; the final target torque determination unit (65) determines the final target torque based on the basic target torque and the torque reduction amount; and the engine control unit (67) controls the engine so that the engine outputs the final target torque. When the state is in a supercharging region where the compressor (4a) boosts supercharging, the engine control unit restricts the control of the engine corresponding to the change in the amount of torque reduction.

Description

technical field [0001] The present invention relates to a control device for an engine with a turbocharger, and more particularly to a control device with a turbocharger for controlling an engine having a turbocharger provided with a compressor provided in an intake passage based on the operating state of the vehicle. Engine controls. Background technique [0002] Conventionally, when the behavior of the vehicle becomes unstable due to slipping or the like, there is known a device (skid prevention device, etc.) that controls the behavior of the vehicle in a safe direction. Specifically, there is known a device that detects understeer or oversteer behavior of the vehicle when the vehicle is turning, etc., and applies appropriate deceleration to the wheels to suppress the understeer or oversteer. [0003] On the other hand, there is known a vehicle motion control device that adjusts the deceleration at the time of turning, unlike the above-mentioned control for improving safe...

AI Technical Summary

Problems solved by technology

[0011] According to the vehicle behavior control device described in Patent Document 2, even when the target torque is momentarily lowered to decelerate the vehicle in response to the driver's steering operation, the bypass valve can be opened as described above. Avoids the generation of surge, but when the bypass valve is opened, the boost pressure decreases, so the acceleration response will deteriorate when there is a subsequent acceleration demand

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