| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent timing advance of combustion start time and increase in combustion speed during compressed self-ignition combustion due to local temperature increase of air fuel mixture within a combustion chamber. <P>SOLUTION: With respect each cylinder, first and second intake valves 2, 3 are provided. Intake air sucked from the first intake valve 2 to the combustion chamber 1 is oriented to the part in the vicinity of the center of the combustion chamber 1, and intake air sucked from the second intake valve 3 to the combustion chamber 1 is oriented to the part in the vicinity of the peripheral edge of an inner wall of the combustion chamber 1. First and second intake heating means 6, 8 are provided in intake flow passages 7, 9 leading to the first and second intake valves 2, 3, respectively. In accordance with an operating state of an internal combustion engine, heating target temperatures of the first and second intake heating means 6, 8 are controlled to different values. Control is performed, so that by setting a temperature of air fuel mixture in the vicinity of the center of the combustion chamber 1 lower than that in the vicinity of the peripheral edge in an intake stroke, heat transfer is caused in a compression stroke and the temperature of the air fuel mixture within the combustion chamber 1 becomes an approximately uniform temperature enabling self-ignition in an ending period of the compression stroke. <P>COPYRIGHT: (C)2012,JPO&INPIT |
