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    Control apparatus for multi-cylinder internal combustion engine and control method
    2.
    发明公开
    Control apparatus for multi-cylinder internal combustion engine and control method 有权
    Steuerapparatfüreinen Multizylinderverbrennungsmotor und Steuermethodedafür

    公开(公告)号：EP1229230A2

    公开(公告)日：2002-08-07

    申请号：EP02002544.1

    申请日：2002-02-04

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Nakasaka, Yukihiro ,  Asada, Toshiaki ,  Fuwa, Naohide ,  Sadakane, Shinji

    IPC分类号： F02D33/02 ,  F02D41/34 ,  F02D41/14 ,  F02D13/04 ,  F01L9/04

    CPC分类号： F02D41/0085 ,  F01L1/053 ,  F01L1/34 ,  F01L9/04 ,  F01L13/0036 ,  F01L13/0042 ,  F01L2800/00 ,  F02D13/023 ,  F02D13/0238 ,  F02D13/0261 ,  F02D41/0002 ,  F02D41/1405 ,  F02D41/1458 ,  F02D41/2441 ,  F02D41/2454 ,  F02D41/2464 ,  F02D41/2467 ,  F02D41/40 ,  F02D2041/001 ,  F02D2041/002 ,  F02D2200/0402 ,  Y02T10/18 ,  Y02T10/42

    摘要： A control apparatus calculates a exhaust gas air-fuel ratio of a plurality of cylinders, in which the operation angle of an intake valve (2) is set to a predetermined operation angle, e.g., a maximum operation angle, based on a value output from an air-fuel ratio sensor so as to minimize a variation in an fuel injection quantity between the plurality of cylinders by that exhaust gas air-fuel ratio. That is, the exhaust gas air-fuel ratio of the plurality of cylinders, in which the valve opening characteristics of the intake valve (2) and an exhaust valve (3) are set such that the intake air amount to be introduced into the plurality of cylinders is limited by the opening amount of a throttle valve (56), for example, and not limited by the valve opening characteristics of the intake valve (2) or the exhaust valve (3) is calculated, and the variation in the fuel injection quantity among the plurality of cylinders is then reduced by that exhaust gas air-fuel ratio. Then, the variation in valve opening characteristics among the cylinders is reduced.

    摘要翻译： 控制装置计算多个气缸的排气空燃比，其中进气门（2）的操作角度被设定为预定操作角度，例如最大操作角度，基于从 空燃比传感器，以通过该排气空燃比使多个气缸之间的燃料喷射量的变化最小化。 也就是说，多个气缸的排气空燃比，其中进气门（2）和排气阀（3）的阀开启特性被设定为使得要引入到多个气缸中的进气量 气缸的开度由例如进气门（2）或排气阀（3）的开阀特性所限定的节流阀（56）的开度来计算，燃料的变化量 然后通过该排气空燃比来减少多个气缸中的喷射量。 然后，气缸中的开阀特性的变化减小。