| 摘要 |
PROBLEM TO BE SOLVED: To accurately reduce vibration generated by resonance between an engine and a flywheel. SOLUTION: An ECU executes a program including a step for calculating a first engine speed 10NE of a crankshaft based on a time period for the crankshaft to rotate by only 10 degrees in a crank angle (S100), a step for calculating a second engine speed 180NE based on a time period for the crankshaft to rotate by only 180 degrees (S102), a step for closing a throttle valve (S112) when a differenceΔNE between the first engine speed 10NE and the second engine speed 180NE is greater than a first threshold (YES in S110), a step for reducing a fuel injection amount (S134) when the differenceΔNE is greater than a second threshold (YES in S120), and a step for stopping the fuel injection (S132) when the differenceΔNE is greater than a third threshold (YES in S130). COPYRIGHT: (C)2009,JPO&INPIT
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