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Design and Development of a Battery-Voltage-Driven Fuel Injector for Direct-Injection Gasoline Engines
Technical Paper
2001-01-1348
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
The conventional fuel injector for direct-injection gasoline engines is driven by voltage step-up circuitry and current control circuitry. The voltage step-up circuitry boosts the battery voltage to near 100 volts. This conventional system is fairly large and a more compact system is preferable. We have developed a mass producible battery-voltage-driven fuel injector for direct-injection gasoline engines. The injector has a dual-coil structure that enables the injector to operate at the battery voltage, thus eliminating the need for either voltage step-up circuitry or current control circuitry. Deviation in battery voltage and changes in harness resistance are fully compensated through opening-coil energization-time control. In addition, with this control method, the injector can be used with a wide range of fuel pressures. In this paper, the design concept and the dynamic characteristics of the battery-voltage-driven fuel injector with a dual-coil structure and the opening-coil energized time control method is discussed in detail.
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Authors
- Makoto Yamakado - Mechanical Engineering Research Laboratory, Hitachi, Ltd.
- Yuzo Kadomukai - Mechanical Engineering Research Laboratory, Hitachi, Ltd.
- Motoyuki Abe - Mechanical Engineering Research Laboratory, Hitachi, Ltd.
- Hiromasa Kubo - Automotive Products Division, Hitachi, Ltd.
- Yasunaga Hamada - Hitachi Car Engineering, Ltd.
Citation
Yamakado, M., Kadomukai, Y., Abe, M., Kubo, H. et al., "Design and Development of a Battery-Voltage-Driven Fuel Injector for Direct-Injection Gasoline Engines," SAE Technical Paper 2001-01-1348, 2001, https://doi.org/10.4271/2001-01-1348.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
References
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- Pontoppidan M., GavuaniG., Bella G. and Rocco V., Direct Fuel Injection - A study of Injector Requirements for Different Mixture Preparation Concepts, SAE Paper 970628 (1997)
- Smith David H., Spinweber David A., A General Model for Solenoid Fuel Injector Dynamics, SAE Paper 8000508 (1980)
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