This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Multi-Vane Expander, by Adding Power, Can Improve The Fuel Economy Of Long-Haul Diesel Trucks
Annotation ability available
Sector:
Event:
National West Coast Meeting
Language:
English
Abstract
An organic Rankine Bottoming cycle added to Diesel engines used for long-haul trucks has the potential of improving their peak fuel economy by up to 15% over a typical duty cycle. General Electric has developed a multi-vane rotary expander which has a measured isentropic brake efficiency of 80+% over a wide range of speed and power levels with organic working fluids. High cycle efficiency for design and off-design conditions is achieved with the multi-vane expander. The potential advantages of the multi-vane expander for the Diesel engine bottoming cycle include the elimination of a high speed gear box and the potential for over 80% isentropic engine efficiency. The multi-vane expander is a ruggedly built component running at Diesel engine speed. This paper describes the design and evaluation of a nominal 40 HP multi-vane expander for this application. The results of preliminary cycle analysis and preliminary hardware evaluation lead to the conclusion that the multi-vane rotary expander is an attractive alternate to a highspeed turbine/gearbox combination.
Recommended Content
| Technical Paper | Chrysler-Cummins Diesel Truck Program |
| Technical Paper | The New Cummins L10 Engine and Voith Automatic Transmission Powertrain |
Citation
Robertson, C. and Eckard, S., "A Multi-Vane Expander, by Adding Power, Can Improve The Fuel Economy Of Long-Haul Diesel Trucks," SAE Technical Paper 780689, 1978, https://doi.org/10.4271/780689.Also In
References
- Doyle, E. Helekar, S. Raymond, R. “Diesel-Organic Rankine Compound Engine Development” 12th IECEC 1977
- Bjerklie, J. Luchter, S. “Rankine Cycle Working Fluid Selection and Specification Ratqonale” International Automotive Engineering Congress SAE Detroit January 1969
- Wigmore, D.B. Niggemann, R.E. O'Sullivan, J.B. “The Specification of an Optimum Working Fluid for a Small Rankine Cycle Turboelectric Power System” Seventh IECEC San Diego September 1972
- Werner, D.K. Barber, R.E. “Working Fluid Selection for a Small Rankine Cycle Total Energy System for Recreation Vehicles” Eighth IECEC Philadelphia 1973
- Edward, T.C. McDonald, A.T. “Analysis of Mechanical Friction in Rotary Vane Machines” Purdue Compressor Technology Conference July 25-27 1972
- Willoughby, R.A. “Air Motors” Machine Design September 12 1974
- Yeaple, F.E. Teichmann, O.E. “Analysis and Design of Air Motors” Hydraulic and Pneumatic Power and Control McGraw-Hill Book Co.
- “Final Report - Feasibility Test on Compounding the Internal Combustion Engine for Automotive Vehicles Task II,” Thermo Electron Corporation