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    • 7. 发明申请
    • METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE
    • 用于操作内燃机的方法和装置
    • US20090281710A1
    • 2009-11-12
    • US12435560
    • 2009-05-05
    • Georg MALLEBREINLaurent NackOliver PechanPierre-Yves Crepin
    • Georg MALLEBREINLaurent NackOliver PechanPierre-Yves Crepin
    • F02D41/30F02B3/00F02D41/00
    • F02D41/1497F02D41/064F02D41/08F02D41/1458F02D2200/1002
    • A method and a device for operating an internal combustion engine to perform a lambda regulation without using a lambda sensor. Fuel is injected for combustion in a combustion chamber of the internal combustion engine. A first quantity of the internal combustion engine is ascertained, which allows a conclusion to be drawn about the behavior of an output quantity of the internal combustion engine, in particular of a torque. The method includes the following: a) a first fuel quantity to be injected is predefined; b) a first value of the first quantity is ascertained, which results from a fuel injection according to the first fuel quantity to be injected; c) the fuel quantity to be injected is modified from the first fuel quantity to be injected in relation to an air quantity to be supplied to the internal combustion engine (1); d) a second value of the first quantity, which results from the change in the fuel quantity to be injected, is ascertained; e) the first value of the first quantity is compared to the second value of the first quantity, and f) as a function of the comparison result, a value for an air/fuel mixture ratio for the first fuel quantity to be injected prevailing prior to the change in the fuel quantity to be injected is ascertained independently of a measured value of a sensor measuring the oxygen level in the exhaust gas.
    • 一种用于操作内燃机以在不使用λ传感器的情况下执行λ调节的方法和装置。 在内燃机的燃烧室中喷射燃料用于燃烧。 确定第一数量的内燃机,这允许得出关于内燃机的输出量,特别是扭矩的行为的结论。 该方法包括以下步骤:a)预定要注入的第一燃料量; b)确定由根据要喷射的第一燃料量的燃料喷射而产生的第一数量的第一值; c)要喷射的燃料量相对于要供应到内燃机(1)的空气量从要喷射的第一燃料量改变; d)确定由要注入的燃料量的变化而产生的第一数量的第二值; e)将第一数量的第一值与第一数量的第二值进行比较,f)作为比较结果的函数,对于先前喷射的第一燃料量的空气/燃料混合比的值 可以独立于测量废气中的氧气含量的传感器的测量值来确定要喷射的燃料量的变化。