| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique can reducing load variation during running, in an internal combustion engine where a cooling fan is connected to a crankshaft through a clutch mechanism. <P>SOLUTION: In regions ((1)-(2)) where an engine rotation speed is lower than a first rotation speed, output of a throttle actuator is offset to be reduced from a value corresponding to a manipulated variable (the line of an internal combustion engine without a cooling fan in Fig.(a)) as shown in Fig.(c). In regions ((3)-(4)) where the engine rotation speed exceeds a second rotation speed, the actuation amount of the throttle actuator is set at a value corresponding to the manipulated variable (the line of the internal combustion engine without a cooling fan). In regions ((2)-(3)) where the engine rotation speed is not lower than the first rotation speed and not higher than the second rotation speed, offset is gradually reduced corresponding to the increase of the rotation speed. The variation of the output of the internal combustion engine occurring with engagement/disengagement of a clutch mechanism can be suppressed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
