| 摘要 |
PURPOSE:To prevent speed change shock and blowup of engine by determining the target degree of opening of a throttle valve for obtainment of the desired output torque from predetermined relationship at the power sinking stage, and by putting the actual degree of opening of the throttle valve identical to the target degree of opening of the throttle valve. CONSTITUTION:The relationship between the degree of opening of the throttle valve and the revolving speed in the condition the actual output torque of the engine 10 is zero is studied through utilization of the fact that no significant change will occur in the amount of change of the engine revolving speed when the output torque of an engine 10 is zero at the time of disengagement of an electromagnetic clutch 12, and thereupon a modification shall be made on a throttle close map. Therefore, the target degree of opening of the throttle valve to nullify the output torque of the engine 10 precisely is obtained regardless of individual difference of engine, change of the engine output torque due to warmed-up condition, and the change in the engine output due to atmospheric pressure. This prevents speed change shock and blowing-up of the engine caused by the output torque becoming negative before the electromagnetic clutch 12 is disengaged. |
