发明名称 |
Spark-ignition gasoline engine |
摘要 |
Disclosed is a spark-ignition gasoline engine, which comprises control means operable, when an engine operation zone is a high-load operation zone including a WOT region within at least a low speed range, to adjust a closing timing of an intake valve in such a manner as to maintain an effective compression ratio at 13 or more, and retard an ignition timing to a point within a predetermined stroke range just after a top dead center of a compression stroke, wherein the effective compression ratio is calculated based on an intake-valve closing timing defined by a valve lift amount of 1 mm. The present invention can provide a spark-ignition gasoline engine having both a low-cost performance and a high engine-power performance even in a high-load operation zone (particularly WOT region) in a low speed range. |
申请公布号 |
EP1840357(A3) |
申请公布日期 |
2014.07.09 |
申请号 |
EP20070006708 |
申请日期 |
2007.03.30 |
申请人 |
MAZDA MOTOR CORPORATION |
发明人 |
HITOMI, MITSUO;IWATA, NORIYUKI;YAMAKAWA, MASAHISA;NISHIMOTO, TOSHIAKI;YOHSO, TAKASHI;HAYASHI, TAKAYOSHI |
分类号 |
F02D37/02;F02D13/02;F02D15/04;F02D41/00;F02P5/15 |
主分类号 |
F02D37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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