Title: Exhaust systems

Abstract: The useful life of a catalyst being used in an engine exhaust system to lower the undesirable constituents in the exhaust gas of an engine being operated on gasoline containing a cyclopentadienyl manganese antiknock is greatly prolonged by providing an exhaust system having a plurality of substantially parallel proximately spaced vanes in the exhaust flow path upstream from the catalyst. The vanes have elongated recesses in their surface.

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Inventors: Niebylski, Leonard M. (Birmingham, MI, US)

Application Number: 551133
Filing Date: 1975-02-19
Publication_date: 1976-12-14
Assignee: Ethyl Corporation (Richmond, VA)
Primary Class(es): 60/299 138/37, 422/177
Other Classes:
US Patent Ref:

1893372	Jan, 1933	Kryzanowski	60/299.
3109715	Nov, 1963	Johnson	60/299.
3185181	May, 1965	Demyan	138/37.
3597166	Aug, 1971	Hochman	23/288.

Other Refs: 910,057

Nov, 1962	UK

Primary Examiner: Hart, Douglas
Assistant Examiner:
Attorney: Johnson; Donald L., Linn; Robert A., Odenweller; Joseph D.