| 摘要 |
PROBLEM TO BE SOLVED: To improve a fuel consumption rate in a medium load region in an internal combustion engine equipped with a variable compression ratio mechanism, a variable valve mechanism and a supercharging mechanism. SOLUTION: A control unit 40, in the case of determining the operating load of the internal combustion engine 10 to be in a low load region, sets a high mechanical compression ratio and delays the closing timing of an intake valve without carrying out supercharging. The control unit 40, in the case of determining the operating load of the internal combustion engine 10 to be in the medium load region, sets the high mechanical compression ratio, delays the closing timing of the intake valve, and carries out supercharging. The control unit 40, in the case of determining the operating load of the internal combustion engine 10 to be in a high load region, sets a low mechanical compression ratio, advances the closing timing of the intake valve, and carries out supercharging. The control unit 40, upon completing the execution of conditions corresponding to load conditions, carries out the operation control of the internal combustion engine 10 under the executed conditions. COPYRIGHT: (C)2004,JPO&NCIPI
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