| 摘要 |
In a method for controlling a diesel engine, it is first determined if a vehicle is travelling on a downgrade, then a predetermined fuel supply cut-off signal is output if the vehicle is travelling on a downgrade. Next, an error between a vehicle speed limit and a present vehicle speed is calculated, and an aiming speed is set as a first predetermined value to determine an aiming error, after which it is determined if the aiming error is greater than 0 and an enable vehicle speed is set as a second predetermined value when the aiming error is greater than 0. the enable vehicle speed is set to 0 when the aiming error is less than 0. Next, the error between the vehicle speed limit and the present vehicle speed is subtracted from the enable vehicle speed to get an enable error, then it is determined if the enable error is greater than 0. When the enable error is greater than 0, an offset vehicle speed Off is set as a third predetermined value. Next, it is determined if an accelerator pedal position has reached or is greater than a fourth predetermined value. When the accelerator position has reached the fourth predetermined value, the offset vehicle speed is added to the vehicle speed limit to obtain a new vehicle speed limit. Next, it is determined if the present vehicle speed is less than the new vehicle speed limit, and when the present vehicle speed is less than the new vehicle speed limit, a fuel supply control signal is output
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