| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively suppress vibration and noise in a multi-cylinder engine in which a partial cylinder operation is performed in which irregular interval explosions occur. <P>SOLUTION: The multi-cylinder engine 1 includes an EGR mechanism 5 for introducing exhaust gas into intake air, and is capable of the partial cylinder operation in which combustion in some of the cylinders 20 is halted. The multi-cylinder engine includes an EGR rate control part 7 for setting an introduction rate at which the exhaust gas is introduced into the intake air to be lower in a first partial cylinder operating state in which the ignition intervals are irregular, than in a second partial cylinder operating state, in which ignition intervals of a plurality of operating cylinders are equal. <P>COPYRIGHT: (C)2010,JPO&INPIT |
