Exhaust system

  • US 4,953,352 A
  • Filed: 01/31/1989
  • Issued: 09/04/1990
  • Est. Priority Date: 08/26/1985
  • Status: Expired due to Term
First Claim
Patent Images

1. An exhaust system for an internal combustion engine having at least four exhaust ports and having an exhaust pipe flow connected to each port;

  • said system comprising;

    (a) at least two chambers;

    (b) said exhaust pipes in pairs and each pair being flow connected opposite the end thereof adapted to be connected to said exhaust ports at one of said chambers; and

    (c) a duct flow connecting two of said chambers;

    said duct including flow directing means for directing a minor portion of a feedback emission flow passing through a first of said chambers such that said minor portion flows into a second of said chambers through said duct.

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