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Low Heat Rejection Engines
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English
Abstract
The paper gives a general overview of the state-of-the-art in low heat rejection (LHR) engines. It also gives experimental results obtained at SwRI with a single-cylinder research engine using an electrically heated cylinder liner to simulate LHR operation and examine the effects of increased liner temperature. It was concluded that the improvement in fuel economy from LHR operation is negligible in naturally-aspirated (NA) engines, about 7 percent in turbocharged (TC) engines and about 15 percent in turbocompound (TCO) engines. LHR operation reduces power in NA engines only. It increases NOx emissions by around 15 percent, but reduces HC and CO emissions. LHR operation offers benefits in the reduction of noise and smoke, and in operation on low cetane fuels. Much more research is needed to overcome the practical problems before LHR engines can be put into production.
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Citation
Thring, R., "Low Heat Rejection Engines," SAE Technical Paper 860314, 1986, https://doi.org/10.4271/860314.Also In
References
- Siegla, D. C. Amann C. A. “Exploratory Study of the Low-Heat Rejection Diesel for Passenger Car Application,” SAE paper 840435
- Watts, P. A. Hey wood J. B. “Simulation Studies of the Effects of Turbocharging and Reduced Heat Transfer on Spark-Ignition Engine Operation,” SAE paper 800289
- Yoshimitsu, T. Toyama K. Sata F. Yamaguchi H. “Capabilities of Heat Insulated Diesel Engine,” SAE paper 820431
- Kamo, R. Woods M. Yamada T. Mori M. “Thermal Barrier Coating for Diesel Engine Piston,” ASME Paper 80-DGP-14
- Cole, R. M. Alkidas A. C. “Evaluation of an Air-Gap-Insulated Piston in a Divided-Chamber Diesel Engine,” SAE paper 850359
- Wood, C. D. “Engine Friction,” SwRI Report No. 8011/1 July 1984
- Toyama, K. Yoshimitsu T. Nishiyama T. Shimauchi T. Nakagaki T. “Heat Insulated Turbo-compound Engine,” SAE paper 831345
- Wallace, F. J. Kao T. K. Alexander W. D. Cole A. Tarabad M. “Thermal Barrier Pistons and Their Effect on the Performance of Compound Diesel Engine Cycles,” SAE paper 830312
- Tovell, J. F. “The Reduction of Heat Losses to the Diesel Engine Cooling System,” SAE paper 830316
- Bryzik, W. Kamo R. “TACOM/Cummins Adiabatic Engine Program,” SAE paper 830314
- Wade, W. R. Havstad P. H. Ounsted E. J. Trinkler F. H. Garwin I.J. “Fuel Economy Opportunities with an Uncooled DI Diesel Engine,” SAE paper 841286
- Storm, R. S. MaeBeth J. W. Flynn, G. Jr. “Silicon Carbide Components for Diesel Engine Applications,” SAE paper 831219
- Matsuoka, H. Kawamura H. Toeda S. “Development of Ceramic Pre-Combustion Chamber for the Automotive Diesel Engine,” SAE paper 840426
- Stang, J. H. “Designing Adiabatic Engine Components,” SAE paper 780089