| 摘要 |
PROBLEM TO BE SOLVED: To improve fuel economy and an exhaust gas characteristic by optimally controlling a temperature rise caused by compression of a diesel engine. SOLUTION: Generation of NOx in combustion is restrained by preventing the cylinder inside temperature from becoming high more than necessary in response to compression, by arranging a combustion chamber 1, an auxiliary chamber 2, a normally closed valve 4 for communicating the auxiliary chamber 1 with the combustion chamber 2 only for a compression stroke latter stage from the compression stroke initial stage of the engine, and a control unit for controlling the valve 4 in an operation state and an unoperated state on the basis of an operation state of the engine in a switching system. COPYRIGHT: (C)2007,JPO&INPIT
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