A twin crank, geared output engine is being developed to satisfy the requirement for reliable, low vibration, compact reciprocating engines for small remotely piloted vehicles (mini-RPV's). The Bennett mini-RPV engine is a 20-hp, two-cylinder, two-stroke, simultaneously firing twin crankshaft unit, with the twin cranks geared to a common output shaft. Cranks run in separate cavities in a common housing. Induction is by twin carburetors, each feeding through a separate crankshaft-mounted rotary valve. In effect, the machine consists of two independent single-cylinder engines. The special feature of the engine is its very low vibration. An analysis and the resulting balance criterion that gives low vibration are presented.

  • Availability:
  • Supplemental Notes:
    • Presented at SAE Off-Highway Vehicle Meeting and Exposition, Milwaukee, Wisconsin, 11-14 September 1978.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Abercrombie, G E
    • Bennett, A G
  • Publication Date: 1978

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00399014
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 780764, HS-025 582U
  • Files: HSL, USDOT
  • Created Date: Aug 31 1985 12:00AM