Engine output control device

Abstract

The invention prevents the deterioration in an increase in acceleration when driving force reduces by a shift start from the lowest when starting with accelerator opening held constant. When a vehicle speed VSP is less than a shift starting vehicle speed VSP1 to start a shift from the lowest different every accelerator opening APO, target throttle opening tTVO is determined as reference opening corresponding to a map for a low vehicle speed, and afterwards, the target throttle opening tTVO is gradually increased to opening with every accelerator opening APO corresponding to a map for a high vehicle speed for increasing the vehicle speed VSP. Thus, the deterioration in acceleration performance can be prevented after starting the shift by increasing engine output torque by an increase in the target throttle opening tTVO in response to time when becoming the vehicle speed VSP1 for starting the shift from the lowest gear ratio, and this action effect can be realized without changing the driving force at the shift starting vehicle speed VSP1.

Description

technical field [0001] The present invention relates to an engine output control device, which, when the vehicle starts to accelerate, [0002] The output of the engine used in combination with a continuously variable transmission is well controlled. Background technique [0003] In a vehicle equipped with a power transmission system composed of an engine and a continuously variable transmission, it is necessary to simultaneously satisfy the requirements for a balanced relationship between the improvement of power performance and the improvement of fuel economy or drivability. Therefore, as a high degree of simultaneous satisfaction Among the methods required above, the following very useful methods can be mentioned: in the case of the engine, the operation amount of the engine output determination unit corresponding to the operation of the accelerator pedal can be arbitrarily changed, and in the case of the continuously variable transmission, the speed change can be perform...

AI Technical Summary

Problems solved by technology

[0015] Therefore, when the driver is accelerating from a start, when the speed change start speed VSP1 is greater than or equal to, the driver feels that the acceleration performance deteriorates as the vehicle speed VSP increases, that is, the driver feels that the increase in the vehicle speed is poor, and the problem of dissatisfaction with the acceleration from the start occurs.

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