Dennis E Copen

US Patent:

43135234, Feb 2, 1982

Filed:

Jun 23, 1980

Appl. No.:

6/162125

Inventors:

Dennis E. Copen - Phoenix AZ

International Classification:

F01N 114

US Classification:

181263

Abstract:

A method and apparatus are provided for reducing back pressure within an exhaust system for an internal combustion engine by creating a venturi within the exhaust system and forcing air through the venturi to create suction for drawing exhaust gases away from the exhaust system. The exhaust system of a conventional automobile is modified by coupling one end of an air directing pipe to the tailpipe of the automobile near the outlet of the tailpipe and at an acute angle thereto for creating a venturi. Air is forced into the opposite end of the air directing pipe by an air scoop or a fan, and the forced air is directed through the outlet of the tailpipe for providing suction which draws exhaust gases out of the tailpipe.