Technical Paper
55 Development of a Fuel Injection System for High-Performance Motorcycles
2002-10-29
2002-32-1824
In Sports Motorcycles category, fuel injection systems have been employed more popularly in recent years, and we have been also developing motorcycles introducing fuel injection systems in the category of 600cc - 1400cc displacement. Sports Motorcycles need to be controlled in a wide range from idling to over 10000rpm. Better throttle response, high power and low fuel consumption are also required. Therefore, adding to optimizations of inlet system layout, fuel injection amount, injection timing and ignition timing, the authors have applied to some models electric control devices such as SDTV (Dual Throttle Valve System) that controls intake air amount with secondary throttle valve located upstream of primary throttle valve and SET (Exhaust Tuning System) that controls exhaust pressure by opening angle of an exhaust valve installed in an exhaust pipe to improve the torque characteristics.