Controls for engines with turbochargers

Abstract

A control device for an engine with a turbocharger capable of suppressing deterioration of acceleration response and controlling the engine so that the behavior of the vehicle intended by the driver can be accurately achieved. It has: a basic target torque unit (61), which determines the basic target torque based on the running state of the vehicle including the operation of the accelerator pedal; , to determine the torque reduction amount; the final target torque determination unit (65), based on the basic target torque and the torque reduction amount, to determine the final target torque; and the engine control unit (67), to control the amount of intake air so as to realize the engine ( 100) Outputting the target air volume of the final target torque, when the operating state of the engine is in the supercharging region, the engine control unit restricts the reduction of the intake air volume corresponding to the reduction of the final target torque corresponding to the change of the torque reduction amount.

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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