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Uncooled Two-Stroke Gas Engine for Heat Pump Drive
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English
Abstract
This paper describes the design and analysis of a family of natural gas fueled, uncooled, two-stroke, lean burn, thermal-ignition engines. The engines were designed specifically to meet the requirements dictated by the commercial heat pump application. The engines have a power output ranging from 15 to 100 kW; a thermal efficiency of 36 percent; a mean time between failure greater than 3 years; and a life expectancy of 45,000 hours. To meet these specifications a family of very simple, uncooled, two-stroke cycle engines were designed which have no belts, gears or pumps. The engines utilize crankcase scavenging, lubrication, stratified fuel introduction to prevent raw fuel from escaping with the exhaust gas, use of and ceramic rolling contact bearings. The Thermal Ignition Combustion System (TICS) [1] is used for ignition to enable the engines to operate with a lean mixture and eliminate spark plug erosion.
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Citation
Badgley, P., McNulty, D., and Woods, M., "Uncooled Two-Stroke Gas Engine for Heat Pump Drive," SAE Technical Paper 910456, 1991, https://doi.org/10.4271/910456.Also In
References
- Thermal Ignition Combustion System Kamo R. Kakwani R. Valdmanis E. Woods M. 1988
- Badgley, P.B. Kamo, R. McNulty, W.D. Woods, M.E. 1990 “Uncooled Two-Stroke Thermal Ignition Engine for Heat Pump Drive,” Final report submitted to Oak Ridge National Laboratory Oak Ridge, TN Subcontract No. DE-AC05-840R21400 for DOE.
- Assanis, D.N. Heywood J.B. “Development and Use of a Computer Simulation of the Turbocompound Diesel Engine for Engine Performance and Component Heat Transfer Studies,” Transactions of the Society of Automotive Engineers, Paper 860329 95 2 2.451 2.476 1986
- Kamo, R. Woods, M. Bryzik, W. “Thin Thermal Barrier Coating,” 1989
- Blair, G.P. “The Basic Design of Two-Stroke Engines,” Society of Automotive Engineers, Inc. 1990