Low Heat Rejection Diesel Engines

  • R. H. Thring


When compared with conventional diesel engines, Low Heat Rejection (LHR) engines have the following features. Fuel economy is improved by 5 to 10 percent in turbocharged engines, or 9 to 15 percent with turbocompounding. Power is reduced by up to 25 percent in naturally-aspirated engines, but this loss can be recovered by pressure boosting. NOx emissions data vary widely, but it is concluded that they will be increased by an average value of 15 percent. However, HC and CO emissions will be reduced by up to 50 percent. Smoke levels should be reduced and particulates will be reduced by up to 80 percent. Noise levels should be reduced and there should be improved capability for operation with low cetane fuels.

Problems to be solved include high temperature lubrication and high temperature materials.


Diesel Engine Fuel Economy Ignition Delay Cetane Number Volumetric Efficiency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1987

Authors and Affiliations

  • R. H. Thring
    • 1
  1. 1.Southwest Research InstituteSan AntonioUSA

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