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    • 19. 发明授权
    • Air to fuel ratio control system for internal combustion engine
    • 内燃机空燃比控制系统
    • US4201166A
    • 1980-05-06
    • US952737
    • 1978-10-19
    • Yutaka NishimuraYoshishige Oyama
    • Yutaka NishimuraYoshishige Oyama
    • F02D41/04F02B1/04F02D35/00F02D41/14F02D41/18F02M3/09F02M7/24F02M7/28F02M7/12
    • F02D41/1487F02D35/0007F02D41/1479F02D41/18F02M3/09F02M7/24F02B1/04
    • An air to fuel ratio control system for an internal combustion engine having a fixed venturi type carburetor is disclosed. The air to fuel ratio control system comprises a device for extracting an atmospheric pressure within a venturi or a pressure corresponding to a relieved venturi vacuum, a device for extracting a static fuel pressure downstream of a main jet provided in a fuel path, a device for comparing those pressures directly or indirectly and a device for controlling the static fuel pressure in accordance with an output of the detecting device. Control is made such that the difference between those pressures is always maintained substantially constant. The air to fuel ratio control system may further comprise a device for detecting composition of exhaust gas of the engine. An output of the composition detecting device is applied to a control device which controls the static fuel pressure based on the output of the differential pressure detecting device and the output of the composition detecting device.
    • 公开了一种具有固定文丘里型化油器的内燃机的空燃比控制系统。 空气/燃料比控制系统包括用于提取文氏管内的大气压力或对应于减压文丘里真空的压力的装置,用于提取设置在燃料路径中的主喷射下游的静态燃料压力的装置,用于 直接或间接地比较这些压力,以及根据检测装置的输出控制静态燃料压力的装置。 进行控制使得这些压力之间的差异始终保持基本恒定。 空燃比控制系统还可以包括用于检测发动机排气成分的装置。 构图检测装置的输出应用于基于差压检测装置的输出和构图检测装置的输出来控制静态燃料压力的控制装置。