公开(公告)号：US4696264A

公开(公告)日：1987-09-29

申请号：US764220

申请日：1985-08-09

申请人： Werner Vondernau ,  Jurgen Weber ,  Hans Nickel ,  Michael Wissmann ,  Harald Schliemann

发明人： Werner Vondernau ,  Jurgen Weber ,  Hans Nickel ,  Michael Wissmann ,  Harald Schliemann

IPC分类号： F02B75/02 ,  F02D9/02 ,  F02D11/06 ,  F02D11/08 ,  F02D17/04 ,  F02D41/22 ,  F02B33/04

CPC分类号： F02D9/02 ,  F02D11/08 ,  F02D17/04 ,  F02B2075/025 ,  F02D2009/0203 ,  F02D2009/0208 ,  F02D2009/0267 ,  F02D2009/0286 ,  F02D2400/04

摘要： A two-stroke engine is disclosed which is controlled by a carburetor throttle valve and has a crankcase subjected to continuously alternating overpressure and underpressure. A pneumatic control member responsive to a signal dependent on the rotational speed of the engine is in pressure communication with the inner chamber of the crankcase via a valve. The output member of the pneumatic control member is connected with the throttle flap of the carburetor. The valve provided between the crankcase and the pneumatic control member is responsive to a signal for controlling the pressure in the pneumatic control member. This valve can be configured as a resonance control valve fixedly mounted to the housing of the engine. The resonance control valve has a mass oscillator which, at a correspondingly high engine speed and as a result of the vibration frequency associated therewith, acts upon a sealing diaphragm in the resonance control valve to open a pass-through opening communicating with the pneumatic control member.

摘要翻译： 公开了一种二冲程发动机，其由化油器节流阀控制并且具有经受连续交替的超压和负压的曲轴箱。 响应于取决于发动机的转速的信号的气动控制构件经由阀与曲轴箱的内室压力连通。 气动控制构件的输出构件与化油器的节气门瓣连接。 设置在曲轴箱和气动控制构件之间的阀响应于用于控制气动控制构件中的压力的​​信号。 该阀可以被配置为固定地安装到发动机壳体上的共振控制阀。 谐振控制阀具有质量振荡器，该质量振荡器在相应高的发动机转速下和作为与其相关联的振动频率的结果作用在共振控制阀中的密封隔膜上，以打开与气动控制构件连通的通过开口 。