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A Method of Assisting Cold-Starts, Improving Fuel Economy and Reducing Emissions of Engines at Cold Temperatures
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Abstract
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.
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Authors
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.Also In
References
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