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1. 发明授权

US4417558A Fuel feeding apparatus for internal combustion engine 失效
标题翻译：内燃机燃油供给装置
公开(公告)号：US4417558A
公开(公告)日：1983-11-29
申请号：US359512
申请日：1982-03-18
申请人： Minoru Osuga , Yoshishige Oyama , Mamoru Fujida
发明人： Minoru Osuga , Yoshishige Oyama , Mamoru Fujida
IPC分类号： F02D35/00 , F02D41/18 , F02D43/00 , F02M51/02 , F02D5/00
CPC分类号： F02M51/02 , F02D35/0092 , F02D41/187 , F02D43/00
摘要： A fuel feeding apparatus for an internal combustion engine, in which a thermal type flow sensor is disposed in a bypass air path supplying bypass air from a point upstream of a Venturi portion formed in a main air-intake path to the Venturi portion, and the quantity of air flowing through the bypass air path is controlled by a solenoid unit so that the output signal of the thermal type flow sensor attains coincidence with a pre-set level. A fuel-metering valve actuated by the solenoid unit meters the quantity of fuel meeting a variation of the quantity of intake air being supplied to the engine so as to inject the metered quantity of fuel in a continuous flow into the main air-intake path. An oxygen sensor senses the concentration of oxygen in engine exhaust gases, and, on the basis of the output signal of the oxygen sensor, the value of the pre-set level is modified so that the rate of excess air in engine exhaust gases can be maintained to be .lambda.=1.
摘要翻译：一种用于内燃机的燃料供给装置，其中热式流量传感器设置在旁路空气路径中，该旁路空气路径从形成在主进气路径中的文丘里部分的上游点向文氏管部分供应旁路空气，通过旁通空气路径流动的空气量由螺线管单元控制，使得热式流量传感器的输出信号与预设水平一致。由螺线管单元致动的燃料计量阀计量满足供应给发动机的进气量变化的燃料量，以将计量的燃料量连续流入主进气路径。氧传感器检测发动机废气中的氧气浓度，并且基于氧传感器的输出信号，改变预设液位的值，使得发动机废气中的过量空气的速率可以是保持为λ= 1。

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