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Cold Start Improvement by use of Latent Heat Stores
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English
Abstract
Engine and cabin heating problems associated with cold starts at subzero conditions are greatly reduced by use of a Heat Battery. This is a latent heat store, collecting waste heat from the engine and storing it by use of efficient heat insulation. On the next cold start the heat is released with high initial power. The performance increases with colder environment conditions. Startability of the engine and the warm-up performance are improved. Emissions of hydrocarbons and carbonmonoxide are reduced up to 80 % in the CVS test at -7°C (20°F) and Diesel noise is lowered.
The windshield is cleared of ice and frost and kept free of mist. Passenger comfort improves since hot air flows into the cabin within seconds after the Heat Battery is engaged.
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Authors
Citation
Schatz, O., "Cold Start Improvement by use of Latent Heat Stores," SAE Technical Paper 921605, 1992, https://doi.org/10.4271/921605.Also In
References
- Schatz, O. Dr.-Ing. Steidele, T. Dipl.-Ing. Puls Charging - A New Approach For Dynamic Charging IMechE Strasbourg 1989
- Piotrowski Gregory K. Schaefer Ronald M. Evaluation of A Schatz Heat Battery On A Flexible-Fueled Vehicle Technical Report of the U.S. Environmental Protection Agency (EPA) September 1991
- Schatz Oskar Cold Start Improvements With a Heat Store SAE International Congress and Exposition Detroit, Michigan February 25 March 1 1991 SAE Technical Paper No. 910305