Coolant Pump Throttling - A Simple Method to Improve the Control Over SI Engine Cooling System 961813
Pump throttling at light engine loads can reduce the heat-transfer coefficients in both the water jacket and the radiator, reducing HC emissions and friction/heat-transfer losses. Pump throttling can also accelerates engine warm-up. Pump driving power under pump throttling is predicted using measured flow parameters of a production-engine cooling system. The lower pump driving power due to pump throttling results in a 0.5% decrease in predicted BSFC. Engine BSFC can decrease by more than 0.5% due to reduced friction and heat-transfer losses as a result of the increased engine temperature.
Citation: Yang, J., "Coolant Pump Throttling - A Simple Method to Improve the Control Over SI Engine Cooling System," SAE Technical Paper 961813, 1996, https://doi.org/10.4271/961813. Download Citation
Author(s):
Jialin Yang
Pages: 7
Event:
1996 SAE International Off-Highway and Powerplant Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1996 Transactions - Journal of Engines-V105-3
Related Topics:
Spark ignition engines
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