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Unconventional Approach to Achieving a Default Throttle Position
Technical Paper
2000-01-0545
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
Motorized throttle valves on conventional spark-ignited engines are designed to have a default position such that when unpowered they go to a fixed position which is between closed-in-bore and wide open. This position allows some, albeit limited, vehicle function in the event of a throttle positioning fault. Described here is a new default positioning mechanism attained by rotating the valve past the conventional operating arc (between closed-in-bore and wide open) through wide open to a partially open position. This default throttle position concept eliminates control difficulties and an undesirable failure mode. The advantages and disadvantages are discussed. Further, the required valve geometry is derived.
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Authors
Citation
Pursifull, R., "Unconventional Approach to Achieving a Default Throttle Position," SAE Technical Paper 2000-01-0545, 2000, https://doi.org/10.4271/2000-01-0545.Also In
Electronic Engine Controls 2000: Modeling, Neural Networks, Obd, and Sensors
Number: SP-1501; Published: 2000-03-06
Number: SP-1501; Published: 2000-03-06
References
- Glutchowski, Paul L. Valve Assembly September 15 1992
- Suzuki, Mikihiko Throttle Valve Control Device of Engine August 4 1998