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    • 49. 发明授权
    • Method and system for injecting a liquid
    • 注射液体的方法和系统
    • US08474244B2
    • 2013-07-02
    • US12677612
    • 2008-09-12
    • Nicolas DuretJean-Claude HabumuremyiFrederic PeucatClaude Mesjasz
    • Nicolas DuretJean-Claude HabumuremyiFrederic PeucatClaude Mesjasz
    • F01N3/00
    • F01N3/208F01N2610/02F01N2900/1808Y02T10/24
    • Method for controlling an injector intended for injecting a pollution-control liquid additive into the exhaust gases of an internal combustion engine at a flow rate governed by a given frequency and opening time of the injector, the injector having a calibration curve that establishes, at given frequency, pressure, temperature and nature of the liquid, the amount of liquid injected during an opening of the injector as a function of the duration of this opening, this curve comprising at least one linear zone (calibration line) and a non-linear zone, said method being characterized in that in the linear zone the parameters of the calibration line are used and in the non-linear zone use is made of a set opening time and a variable frequency according to at least one calibration point established for this purpose. SCR system to which this method can be applied.
    • 用于控制喷射器的方法,所述喷射器用于以由给定的喷射器的给定频率和打开时间控制的流量将污染控制液体添加剂注入到内燃机的废气中,所述喷射器具有在给定的时间内建立的校准曲线 频率,压力,温度和性质,喷射器打开期间喷射的液体的量作为该打开持续时间的函数,该曲线包括至少一个线性区域(校准线)和非线性区域 所述方法的特征在于,在线性区域中,使用校准线的参数,并且在非线性区域中,根据为此目的建立的至少一个校准点,使用设定的开启时间和可变频率。 可以应用该方法的SCR系统。