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As part of the Low Temperature Engine Performance task forces activities, letters were sent to all major light- and heavy-duty automotive manufactures to solicit input for engine selection. On the basis of these responses, and considering availability, annual production, potential sponsorship and range of pumping characteristics, 9 light duty engines (including 4-, 6- and 8-cylinder designs) were selected for further study. At the same time, protocols for testing the engines under both cold start and pumpability conditions were developed by consensus. Cold start testing called for good winter grade fuel, booster batteries and fresh engine tune-up to maximize starting potential. Pumpability testing was conducted via motoring of the engine to allow testing of the oil at/below the minimum starting temperatures in a repeatable fashion.
cold starting, pumpability, lubricant rheology, light duty engines
Senior Research Associate, Imperial Oil, Sarnia, Ont.
De Paz, EF
Project Leader, Consumers Union, Yonkers, NY
HD Formulation Science Leader, Infineum USA LP, Linden, NJ
Vice President of Technology, Cannon Instrument Co., State College, PA
Consultant, Infineum, USA LP, Houston, TX
Staff Research Engineer, General Motors Research Laboratories, Warren, MI
Senior Statistician, Infineum USA LP, Linden, NJ