摘要 |
PROBLEM TO BE SOLVED: To provide a technique, capable of suctioning fresh air from a suction passage 12 to a combustion chamber 9 and smoothly conducting starting operation of a premix compression self-ignition engine 1 for making air/fuel mixture to be compressed to conduct self-ignited combustion. SOLUTION: This premix compression self-ignition engine is provided with a heating means 3 capable of heating the fresh air A, an exhaust gas re- circulation rate adjusting means 22b capable of adjusting exhaust gas re- circulation rate with respect to the fresh air A, and a starting operation means 22a for conducting a first operation for setting the exhaust gas recirculation rate as a first set value by the exhaust gas re-circulation rate adjusting means 22b as well as heating the fresh air A suctioned to the combustion chamber 9 to warm-up temperature by the heating means 3, and a second operation for setting the exhaust gas recirculation rate as a second set value larger than the first set value by the exhaust gas recirculation rate adjusting means 22b, as well as lowering a heating amount of the heating means 3, so as to start the operation based on an inputted operation start command.
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