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    • 44. 发明授权
    • Lambda-controlled mixture metering arrangement for an internal
combustion engine
    • 用于内燃机的λ控制混合计量装置
    • US4671244A
    • 1987-06-09
    • US708269
    • 1985-03-05
    • Albrecht ClementDieter MayerErnst Wild
    • Albrecht ClementDieter MayerErnst Wild
    • F02D41/14F02D45/00
    • F02D41/1474F02D41/1483F02D41/1456
    • The invention is directed to a mixture metering arrangement for an internal combustion engine and includes an exhaust-gas sensor which is exposed to the exhaust gas of the internal combustion engine. The exhaust-gas sensor indicates the air ratio lambda and preferably has a two-level characteristic. The sensor output signals are acted upon by a follow-on controller which is preferably a PI-controller. The controller output quantity acts upon the mixture composition in a corrective fashion. In this arrangement, the control oscillation of the controller output quantity is adjusted to a predetermined amplitude by means of a superposed control. In particular, the integral component of the control oscillation is influenced in a manner causing it to have the same amplitude as the proportional component while in the steady operating condition. Thus, it is possible to maintain the maximum control frequency in any operating range of the internal combustion engine so that the controller always operates at its optimum. In addition, the effects of deviations occurring from one engine to another or from one exhaust-gas sensor to another as well as of long-term variations are suppressed.
    • 本发明涉及一种用于内燃机的混合计量装置,并且包括暴露于内燃机的废气的废气传感器。 排气传感器表示空气比λ,优选具有两级特性。 传感器输出信号由优选为PI控制器的后续控制器起作用。 控制器输出量以纠正方式作用于混合物组成。 在这种布置中,通过叠加控制将控制器输出量的控制振荡调整到预定的幅度。 特别地,在稳定运行状态下,控制振荡的积分分量受到影响,使其具有与比例分量相同的振幅。 因此,可以在内燃机的任何操作范围内保持最大控制频率,使得控制器总是以其最佳运行。 此外,抑制了从一个发动机到另一个发动机或从一个废气传感器到另一个排气传感器到另一个排气传感器的偏差的影响以及长期变化。