| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a warmup control method of a low compression ratio engine for a diesel hybrid vehicle capable of suppressing emission of unburned gas and warming up at an early stage. <P>SOLUTION: The warmup control method comprises the following steps: the engine cooling water temperature is read (step S10); when it is determined to be cold time (YES in step S11), water temperature correcting supercharging pressure calculated from the temperatures of the engine cooling water, fuel injection amount, and engine speed is added to a target supercharging pressure after warmup and the target supercharging pressure at cold time is calculated (steps 12, 13); when the actual supercharging pressure is less than the cold time target supercharging pressure (YES in step S14), a nozzle opening of a variable nozzle turbo charger 26 is controlled to the closing side (step S15); and the power generation amount by the motor generator is further increased, and engine output is increased (step S16). When the actual supercharging pressure is larger than the cold time target supercharging pressure (NO in step S14), the nozzle opening is controlled to the opening side (step S17). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
