VORTEX AIR FLOW SENSOR FOR ELECTRONICALLY CONTROLLED ENGINE

A new automobile flow sensor utilizing the Karman vortex has been developed for measuring intake air flow of engine. It has a vortex rod assembly which produces powerful and stable vortex even at a low flow rate and an optical vortex detecting system which has a mirror vibrated by vortex pressure change and detects the vibration of the mirror by means of an optical fiber. With the above features, this flow sensor offers a substantial reduction in manufacturing cost while maintaining the rangeability of 1:45 and the accuracy of less than plus or minus 3% necessary to control the engine. The flow sensor is completely free from the effects of electromagnetic noise and temperature change in the engine room.

• Supplemental Notes:
  • Proceedings of the International Symposium on Automotive Technology and Automation with particular reference to Computer Aided Engineering and Manufacturing, Volume 2, Wolfsburg 13-17 September 1982.
• Corporate Authors:

  Automotive Automotion Limited

  42 Lloyd Park Avenue
  Croydon CRO 5SB, Surrey,   England 
• Authors:
  • Miyoshi, N
• Conference:
  • Proceedings of the International Symposium on Automotive Technology and Automation with particular reference to Computer Aided Engineering and Manufacturing, Volume 2, Wolfsburg 13-17 September 1982.
• Publication Date: 1982

Media Info

• Features: Figures;
• Pagination: p. 227-240

Subject/Index Terms

• TRT Terms: Accuracy; Air; Costs; Flow; Sensors; Vehicle power plants; Vortices
• Uncontrolled Terms: Air flow
• Old TRIS Terms: Automobile engines
• Subject Areas: Finance; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00373468
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: HS-034 065
• Files: HSL, USDOT
• Created Date: Jun 30 1983 12:00AM