| 摘要 |
PURPOSE: A four cycle engine is provided to improve a quality of an exhaust gas and to reduce a fuel consumption in a four cycle engine by forming a fuel supplying device by two carburetors for both intake ports and disposing the intake ports in an area branched from the intake pipe. CONSTITUTION: A four cycle engine in which an intake passage having at least two intake valves(8,9) and two intake ports are provided per cylinder(3), the intake ports are branched from a common intake pipe(13). Each of the intake ports is guided to upper sides of the intake valves(8,9), one of the two intake ports is constituted as a charge loading port(11), and the other is constituted as a volume port(12). A throttle device(21) for intake amount control is interposed in the intake passage, and the intake passage is connected with a fuel-supplying device. A fuel-supplying device is constituted of a joint carburetor(14) for both intake ports of a charge loading port and a volume port. The carburetor(14) is characterized by disposing both the intake ports in an area branched from the intake pipe(13).
|
