Engine controller

Abstract

The invention provides an engine control device which is provided with a judging part which can judge a state that a vehicle is not driven, a brake torque gaining part which drives and acts on the brake torque of the vehicle, a vehicle speed detection part used for detecting the vehicle speed, and an atmospheric pressure gaining part which gains the atmospheric pressure value when the engine is driven. The engine control device calculates the slope of the road surface by a road surface slope judging part according to the brake torque gained by the brake torque gaining part and the vehicle speed detected by the vehicle speed detection part when in the state that the vehicle is not driven judged by the judging part, calculates the descending height of the vehicle according to the calculated slope of the road surface and the driving distance calculated through the vehicle speed, corrects the atmospheric pressure value gained by the atmospheric pressure gaining part, and masters the atmospheric at the position of the downgrade of the vehicle. The engine control device aims at calculating the slope of the road surface according to the brake torque acted on the vehicle and the vehicle speed in the engine control device without an atmospheric sensor, calculating the descending height of the downgrade of the vehicle according to the slope of the road surface, correcting the atmospheric value according to the descending height, mastering the atmospheric at the position of the downgrade of the vehicle, thus leading the openness of an electronic control throttle valve to be proper and improving driving performance.

Description

technical field

[0001] The present invention relates to an engine control device, and more particularly, to an engine control device having a demand torque demand control that controls an electronically controlled throttle valve using a demand torque control. Background technique

[0002] In the past, there is a weighting factor assigned to the time when the exhaust brake and the decelerator are operated in the "valid" state, which is accumulated and added by the counting part, and a weighted coefficient is assigned to the time of depressing the accelerator pedal, which is accumulated and subtracted from the counting part. When the count value of the cumulative count reaches a certain value, the downhill detection device (Patent Document 1) that determines whether the vehicle is traveling on a long downhill slope does not determine whether the vehicle is downhill, but does not calculate the descending gradient of the road surface.

[0003] [Patent Document 1] Publication No....

Images