A Method of Assisting Cold-Starts, Improving Fuel Economy and Reducing Emissions of Engines at Cold Temperatures 890001
A slightly modified thermodynamic cycle for a spark ignition engine is proposed as a means of improving cold starting, warm-up driveability and fuel economy. Tests were conducted on a single cylinder research engine using a modified camshaft to implement the cycle. Substantial improvements in BSFC were obtained not only during the warm-up period but also at normal steady-state temperatures. NOx, CO and UBHC were simultaneously reduced as well.
Citation: Rao, V., Bardon, M., and Gardiner, D., "A Method of Assisting Cold-Starts, Improving Fuel Economy and Reducing Emissions of Engines at Cold Temperatures," SAE Technical Paper 890001, 1989, https://doi.org/10.4271/890001. Download Citation
V. K. Rao, M. F. Bardon, D. P. Gardiner
Royal Military College of Canada
1989 Subzero Engineering Conditions Conference and Exposition
Subzero Engineering Conditions Conference Proceedings-P-220, Heavt Duty Truck Aerodynamics-SP-0688, SAE Transactions Journal of Engines-V98-3