| 摘要 |
PROBLEM TO BE SOLVED: To suppress emission of HC and CO due to incomplete combustion of fuel caused because a cylinder chamber and a cylinder head are cold when starting an internal combustion engine, by heating intake air by exhaust gas recirculation between cylinders. SOLUTION: When starting the engine of the multiple cylinder internal combustion engine, exhaust gas recirculation between cylinders, wherein exhaust gas of a first cylinder carrying out an operation cycle first is added to intake air through an exhaust port by an exhaust manifold during the suction stroke of a second cylinder carrying out an operation cycle later, is carried out to expedite heating the intake air by the exhaust gas. In addition, if there is a third cylinder the operation cycle of which is positioned between the first and second cylinders, the first operation cycle of the third cylinder is made practically non-operable.
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