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    • 5. 发明授权
    • Air flow rate meter for internal combustion engines
    • 内燃机空气流量计
    • US4895020A
    • 1990-01-23
    • US304139
    • 1989-01-31
    • Erwin NaegeleArmin Witzig
    • Erwin NaegeleArmin Witzig
    • F02D3/00F02D35/00F02M69/48G01F1/26G01F1/28G01M15/04
    • F02M69/48G01F1/26G01F1/28
    • In known air flow rate meters, the initial tension of a spiral spring, which generates the restoring force on the baffle valve, is adjusted by the snapping of a locking spring into gaps between the teeth of a tooth ring provided on the spring housing. However, the tooth spacing cannot be made arbitrarily small. Accordingly, a way to enable finer adjustment of the initial tension is needed, so that a measurement can be made even at low idling speeds and with a small aspirated air quantity. In the air flow rate member according to the invention, the locking spring engages a detent element, which facing the toothed ring has an inside serration, the spacing of the teeth of which is less than the spacing of the toothed ring; when the spring housing rotates, detent increments that correspond to the spacing of the inside serration are attainable. Quite generally, the embodiment according to the invention enables sensitive adjustment and locking of a spiral spring serving as a restoring force.
    • 在已知的空气流量计中,通过将锁定弹簧卡扣在设置在弹簧壳体上的齿环的齿之间的间隙中来调节产生回流阀上的恢复力的螺旋弹簧的初始张力。 然而,齿距不能任意小。 因此,需要能够更好地调节初始张力的方式,使得即使在低怠速和小吸气量下也能够进行测量。 在根据本发明的空气流速构件中,锁定弹簧接合止动元件,该止动元件面向齿环具有内部锯齿,其齿的间距小于带齿的间隔; 当弹簧壳体旋转时,可以获得与内部锯齿的间隔对应的制动增量。 通常,根据本发明的实施例能够灵敏地调节和锁定用作恢复力的螺旋弹簧。