公开(公告)号：US06634340B2

公开(公告)日：2003-10-21

申请号：US09935410

申请日：2001-08-22

申请人： Jürgen Häberlein ,  Roger Ziegler

发明人： Jürgen Häberlein ,  Roger Ziegler

IPC分类号： F02M3704

CPC分类号： F02M17/04 ,  F02M37/046 ,  F02M37/12 ,  Y10S123/05

摘要： A four-stroke engine is provided and has a cylinder and a piston that delimits a combustion chamber and by means of a connecting rod drives a crankshaft disposed in a crankcase. To drive a fuel pump, the fluctuating inner pressure in the crankcase, in the valve housing or in a connecting passage that connects the two housings is utilized. For this purpose, a drive chamber of the fuel pump is connected via a pulse line with a crankcase, a valve housing or the connecting passage.