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    • 4. 发明授权
    • Oil pressure switch
    • 油压开关
    • US4551594A
    • 1985-11-05
    • US619791
    • 1984-06-12
    • Tadashi Katoh
    • Tadashi Katoh
    • F01M1/20F01M1/18H01H35/38H01H35/40
    • H01H35/38
    • An oil pressure monitoring system for an engine having an oil pressure switch comprising a piston located in a port associated with the lubricating system of the engine. The piston is biased into the port by means of a spring. Located between the piston and the wall of the port so as to undergo compression with movement of the piston into the port is an elastic, electrical conductor ring. The ring is placed in series in a warning circuit and is so constructed that compression of the ring resulting from a drop in oil pressure within the lubricating system will affect conductivity through the ring to initiate a warning signal.
    • 一种用于具有油压开关的发动机的油压监测系统,该油压开关包括位于与发动机的润滑系统相关联的端口中的活塞。 活塞通过弹簧偏压到端口中。 位于活塞和端口的壁之间,以便经过压缩,活塞进入端口的是一个弹性的电导体环。 环被串联放置在警告电路中,并且被构造成使得由润滑系统内的油压下降导致的环的压缩将影响环的电导率以启动警告信号。