A MULTI-VANE EXPANDER, B4 ADDING POWER, CAN IMPROVE THE FUEL ECONOMY OF LONG-HAUL DIESEL TRUCKS

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. 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 high-speed turbine/gearbox combination.

Media Info

  • Pagination: 19 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00308719
  • Record Type: Publication
  • Report/Paper Numbers: SAE 780689
  • Files: TRIS
  • Created Date: May 21 1980 12:00AM