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Automatic priming system

2022-09-08 来源:爱问旅游网
专利内容由知识产权出版社提供

专利名称:Automatic priming system发明人:Daniel E. Dedering申请号:US11346901申请日:20060203

公开号:US20060249860A1公开日:20061109

专利附图:

摘要:An automatic priming system for internal combustion engines, which is operableto prime the carburetor of the engine at engine cranking speeds, and is automaticallydisabled after the engine starts. The automatic priming system is driven by pressurefluctuations within the engine crankcase which are caused by reciprocation of the piston.

At engine cranking speeds, fluid communication of positive and negative pressure pulsesbetween the engine crankcase and an accumulator is allowed via a restrictor. The positiveand negative pressure pulses are used to drive an air pump, such as a diaphragm airpump, to pump atmospheric air to the carburetor to pressurize the fuel bowl of thecarburetor for priming. After the engine starts and the piston reciprocates more rapidly,the restrictor prevents communication of positive and negative pressure pulses betweenthe crankcase and the accumulator, and the pressure within the accumulator is relativelyconstant and below atmospheric pressure. In this manner, the air pump is no longerdriven by the positive and negative pressure pulses and the priming operation isterminated.

申请人:Daniel E. Dedering

地址:Elkhart Lake WI US

国籍:US

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