| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology capable of restraining a torque fluctuation caused by performing rich spike control, in a hybrid vehicle having an internal combustion engine having a supercharger and an NOx storing reducing catalyst. <P>SOLUTION: In this control method of the hybrid vehicle having the supercharger having a turbine driven by exhaust gas, the internal combustion engine having the NOx storing reducing catalyst for holding NOx in the exhaust gas and reducing the held NOx in response to the exhaust air-fuel ratio and a motor generator having both the function as an electric motor for outputting motive power and the function as a generator for generating electric power by using motive power outputted by the internal combustion engine; the ignition timing is delayed by an ignition timing delay quantity determined by taking into consideration atmospheric pressure when performing the rich spike control for reducing the NOx held by the NOx storing reducing catalyst by temporarily making the exhaust air-fuel ratio rich. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
