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    • 3. 发明授权
    • Inter-cylinder variation detection device and inter-bank variation detection device of internal combustion engine
    • 内燃机缸间变异检测装置和同轴变量检测装置
    • US07032550B2
    • 2006-04-25
    • US10528357
    • 2004-06-17
    • Kaoru OhtsukaTakashi TsunookaKeizo Hiraku
    • Kaoru OhtsukaTakashi TsunookaKeizo Hiraku
    • F01L1/34
    • F01L1/34F01L1/185F01L13/0015F01L13/0036F01L2001/0537F01L2105/00F01L2800/00F01L2820/042F02D13/0207F02D35/023F02D41/0002F02D41/008F02D41/0082F02D41/1498F02D2041/001Y02T10/18Y02T10/42
    • An inter-bank variation detection device of an internal combustion engine provided with a valve opening characteristic setting means (57) for changing the valve opening characteristic of an intake valve (9) for each of the cylinders (#1 to #4) or each of the bank (BL, BR); an indicator detecting means for detecting indicators of the state of combustion for each bank at the time of a first valve opening characteristic set by the valve opening characteristic setting means and the time of a second valve opening characteristic smaller than the first valve opening characteristic; a fuel injection amount variation detecting means (27) for detecting variation of the fuel injection amount for each bank by using the indicator (Xfn) detected by the indicator detecting means at the time of the first valve opening characteristic; and a valve opening characteristic variation detecting means (27) for detecting variation of the valve opening characteristic for each bank by using the indicator (Xsn) detected by the indicator detecting means at the time of the second valve opening characteristic and the variation of the fuel injection amount detected by the fuel injection amount variation detecting means is provided. It is also possible to change the valve opening characteristic of the intake valve by the valve opening characteristic setting means so that the variation of valve opening characteristic for each cylinder or each bank is eliminated.
    • 一种具有用于改变每个气缸(#1至#4)或每个气缸(#1至#4)的进气门(9)的开阀特性的阀开启特性设定装置(57)的内燃机的行间变化检测装置, 的银行(BL,BR); 一个指示器检测装置,用于检测由阀开启特性设定装置设定的第一阀开启特性时的各组的燃烧状态指标和小于第一阀开启特性的第二阀开启特性的时间; 燃料喷射量变化检测装置,用于通过使用在第一阀打开特性时由指示器检测装置检测的指示器(Xfn)来检测每个组的燃料喷射量的变化; 以及阀开启特性变化检测装置(27),用于通过使用由指示器检测装置在第二阀打开特性时和燃料变化时检测到的指示器(Xsn)来检测每个组的阀开启特性的变化 提供了由燃料喷射量变化检测装置检测的喷射量。 也可以通过开阀特性设定单元来改变进气门的开阀特性,从而消除了每个气缸或每个排的阀开启特性的变化。