发明授权
US4180975A Secondary air supply system using reed valves 失效
二次供气系统使用簧片阀

Secondary air supply system using reed valves
摘要:
The secondary air supply system of an internal combustion engine is provided with two reed valves through which atmospheric air is induced to the exhaust system of the engine. The two reed valves are selectively maintained operable under low and high engine speed operating conditions, respectively.
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