This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Control Device of Electronically Controlled Fuel Injection System of Air-cooled Engines for Small Motorcycles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 08, 2004 by SAE International in United States
Annotation ability available
In conventional electronically controlled fuel injection systems, when the battery is inadequately charged, the small amount of electric power generated from the alternator by the kick starter operation is consumed by all electrical loads including the battery. This causes a voltage drop, hence the fuel injection system does not function due to a power shortage. To eliminate the power shortage, an installed relay circuit opens all electric loads other than the fuel injection system. This allows the fuel injection system to use all the electric power generated by the kick starter operation aided through using an additionally incorporated condenser. This type of electric power control system has been incorporated into the ECU. Thus, the control system has been realized that permits starting of an engine by using the kick-starter even when the battery is completely discharged. Sensing the engine oil temperature, the control system permits compensation of the fuel injection quantity and the ignition timing even in an air-cooled engine.
CitationTamaki, K., Kokubu, S., and Akamatsu, S., "Control Device of Electronically Controlled Fuel Injection System of Air-cooled Engines for Small Motorcycles," SAE Technical Paper 2004-01-0901, 2004, https://doi.org/10.4271/2004-01-0901.
- Akamatsu Shunji et al. Research for Reducing Exhaust Emission of 4-Stroke Engines for Small Motorcycles Safety Environment Future - International Motorcycle Conference Institute for Motorcycle Safety Munich, Germany 2000
- Abe Masahiko et al. Exhaust Emission Reduction for the VFR800FI Safety Environment Future - International Motorcycle Conference Institute for Motorcycle Safety Munich, Germany 1997
- Shimada Nobuhiro et al. Development of an ECU Integrated Throttle Body System Module for Compact Fuel Injection System Used in Small Motorcycles and Scooters The 12 th International Pacific Conference on Automotive Engineering Bangkok, Thailand 2003