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    • 5. 发明授权
    • Smoldering determination method of internal combustion engine
    • 内燃机闷燃测定方法
    • US07451640B2
    • 2008-11-18
    • US11659659
    • 2005-08-03
    • Morita AsanoMitsuhiro Izumi
    • Morita AsanoMitsuhiro Izumi
    • G01M15/00
    • F02P17/12F02P2017/121F02P2017/125
    • According to the present invention, in a spark ignition-type internal combustion engine which has a spark plug and mounted in a vehicle, an ion current generated in a combustion chamber through the spark plug after ignition is detected and smoldering of the spark plug is determined on the basis of the detected ion current. An operation state of the internal combustion engine is detected and smoldering of the spark plug is determined based on that the detected ion current satisfies a predetermined condition when the detected operation state falls within an operation determination range set corresponding to an operation range in which an intake port pressure close to an atmospheric pressure is achieved using predetermined engine speed as an upper limit and a predetermined intake port pressure as a lower limit.
    • 根据本发明,在具有火花塞并安装在车辆中的火花点火型内燃机中,检测到在点燃之后通过火花塞在燃烧室中产生的离子电流,并确定火花塞的闷燃 在检测离子电流的基础上。 检测内燃机的运转状态,并且当检测到的运行状态落在对应于进气口的运转范围设定的运转判定范围内时,基于检测出的离子电流满足预定条件来确定火花塞的阴燃 使用预定的发动机转速作为上限和预定的进气口压力作为下限来实现接近大气压的端口压力。
    • 6. 发明申请
    • Combustion State Determination Method Of Internal Combustion Engine
    • 内燃机燃烧状态测定方法
    • US20080028842A1
    • 2008-02-07
    • US11659663
    • 2005-08-03
    • Morito AsanoMitsuhiro IzumiTsutomu Kusuhara
    • Morito AsanoMitsuhiro IzumiTsutomu Kusuhara
    • G01R19/15
    • F02D35/021F02D41/402Y02T10/44
    • The present invention is a combustion state determination method of an internal combustion engine for detecting an ion current which is generated in a combustion chamber at combustion of the internal combustion engine in a detection period to determine a combustion state, comprising steps of detecting a primary combustion period on the basis of a first ion current which forms the detected ion current and occurs immediately after ignition, detecting a secondary combustion period on the basis of the ion current which occurs after disappearance of the first ion current when at least the detected primary combustion period is normal, determining the combustion state on the basis of the detected primary combustion period when the secondary combustion period is smaller than a predetermined value, and determining the combustion state on the basis of a whole combustion period from start of the detection period of the ion current to end of the last secondary combustion period in the detection period when the secondary combustion period is larger than the predetermined value.
    • 本发明是一种内燃机的燃烧状态判定方法,该内燃机用于检测在检测期间内燃机的燃烧时在燃烧室中产生的离子电流,以确定燃烧状态,包括以下步骤:检测一次燃烧 基于形成检测到的离子电流并且在点火之后立即发生的第一离子电流的时间段,基于在至少检测到的一次燃烧时间时基于第一离子电流消失之后发生的离子电流检测二次燃烧时间 是正常的,当二次燃烧时间小于预定值时,基于检测到的一次燃烧时间确定燃烧状态,并且基于从离子的检测周期开始的整个燃烧周期来确定燃烧状态 在检测pe中的最后二次燃烧时段的当前结束 当二次燃烧期间大于预定值时。