PULSAIR-A METHOD FOR EXHAUST SYSTEM INDUCTION OF SECONDARY AIR FOR EMISSION CONTROL

The Pulsair concept utilizes inherent exhaust system pressure pulsations to induce secondary air into reciprocating engine exhaust ports for oxidation of unburned hydrocarbons and carbon monoxide. High-speed check valves are actuated by subambient exhaust pressures which arise from reflected exhaust "blowdown" pressure waves. Experiments with V-8 engines and simple acoustic wave theory have been used to define system fundamentals and design techniques for obtaining high induced airflow rates at specified engine speeds. Procedures are outlined for adapting the concept to L-4, and V-6 engines. /GMRL/

Media Info

  • Pagination: 15 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00099024
  • Record Type: Publication
  • Report/Paper Numbers: SAE #750172
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM