An indirect sensing technique for diesel fuel quantity control. Technical progress report, July 1--September 30, 1998
The project has focused on a retrofit product suitable for installation on existing mechanically-governed diesel engines. Included in this potential market are almost all diesel-powered passenger cars and light trucks manufactured prior to the introduction of the most recent clean diesel engines equipped with particulate traps and electronic controls. Also included are heavy-duty trucks, transit vehicles, school buses, and agricultural equipment. This system is intended to prevent existing diesel engines from overfueling to the point of visible particulate emissions (smoke), while allowing maximum smoke-limited torque under all operating conditions. The system employs a microcontroller and a specialized exhaust particulate emission sensor to continuously generate and update an adaptive throttle-limit map. This map specifies a maximum allowable throttle position as a function of engine speed and coolant temperature. For mechanically regulated fuel injection systems, the throttle position limit is mechanized via a linear position actuator attached to the fuel injection pump. For electronically regulated injection systems, this limit is mechanized by interception and modification of the electronic throttle input to the system.
- Research Organization:
- Loragen Advanced Technology Group, San Luis Obispo, CA (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- FG01-94CE15583
- OSTI ID:
- 665934
- Report Number(s):
- DOE/CE/15583-T2; ON: DE99000051; TRN: AHC29819%%88
- Resource Relation:
- Other Information: PBD: 22 Oct 1998
- Country of Publication:
- United States
- Language:
- English
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