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Engine Application of a Battery Voltage-Driven DI Fuel Injection System
Technical Paper
2001-01-0986
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
Every fuel injection system for DI gasoline engines has a DC-DC converter to provide high, stabile voltage for opening the injector valve more quickly. A current control circuit for holding the valve open is also needed, as well as a large-capacity capacitor for pilot injection. Since these components occupy considerable space, an injector drive unit separate from the ECU must be used. Thus, there has been a need for a fuel injection system that can inject a small volume of fuel without requiring high voltage. To meet that need, we have developed a dual coil injector and an opening coil current control system. An investigation was also made of all the factors related to the dynamic range of the injector, including static flow rate, fuel pressure, battery voltage and harness resistance. Both efforts have led to the adoption of a battery voltage-driven fuel injector.
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Authors
Topic
Citation
Kawamoto, Y., Tsuchiya, Y., Yamakado, M., and Hamada, Y., "Engine Application of a Battery Voltage-Driven DI Fuel Injection System," SAE Technical Paper 2001-01-0986, 2001, https://doi.org/10.4271/2001-01-0986.Also In
Electronic Engine Controls 2001: Sensors & Actuators, Hardware, Tools and Validation
Number: SP-1586; Published: 2001-03-05
Number: SP-1586; Published: 2001-03-05