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    • 1. 发明申请
    • Valve actuation controlling apparatus and method for engine
    • 发动机气门致动控制装置及方法
    • US20050229880A1
    • 2005-10-20
    • US11090216
    • 2005-03-28
    • Akira Hashizume
    • Akira Hashizume
    • F01L1/34F01L13/00F02D13/02F02D17/00F02D29/02F02D41/04F02D45/00
    • F01L1/34F01L13/00F01L2800/03F02D13/0234F02D41/0005F02D41/042F02D2041/001Y02T10/18Y02T10/42
    • After commanding an engine to stop, an electronic controller controls a variable working-angle control mechanism to increase the working angle of an intake valve in preparation for restarting of the engine. In the case of an automatic stop, which is followed by restarting of the engine in a relatively short time, the working angle of the intake valve is set to the maximum working angle of the variable working-angle control mechanism, which maximizing decompression. In a manual stop, it is necessary to allow for both hot start and cold start. Also, in the manual stop, a target working angle when the engine is stopped is set less than that of a case of the automatic stop. Thus, the starting characteristic is prevented from being degraded by increased friction of engine parts during a cold start, and knocking is prevented from occurring due to a high compression ratio in a cylinder during a hot start.
    • 在命令发动机停止之后,电子控制器控制可变的工作角度控制机构以增加进气门的工作角度,以准备重新起动发动机。 在自动停止的情况下,随后在相对短的时间内重新启动发动机,将进气门的工作角度设定为最大化减压的可变工作角度控制机构的最大工作角度。 在手动停止中,有必要允许热启动和冷启动。 此外,在手动停止中,发动机停止时的目标工作角度被设定为小于自动停止的情况。 因此,通过在冷启动期间发动机部件的摩擦增加,防止起动特性劣化,并且防止由于热启动期间气缸中的高压缩比而发生爆震。