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US07383820B2 Electromechanical valve timing during a start 有权
启动时机电气门正时

Electromechanical valve timing during a start
摘要:
A system and method to control engine valve timing to during the start of an internal combustion engine. Electromechanical valves are controlled in a manner to reduce hydrocarbon emissions during the start of an internal combustion engine. The method controls intake valves so that smaller adjustments are made to cylinder spark advance and air-fuel over a range of operating conditions.
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