Method and apparatus for tuning an engine by modifying pod filter and method of calibration

摘要

A method and apparatus for tuning an engine by a modified pod filter or velocity stack using a tunable pod air filter with base and cap members forming a housing that is joined together by a filter membrane to define a plenum or resonance chamber within the housing that contains only air drawn in through the filter. An aperture in the base member passes air to the inlet of an engine. A tuning sleeve is sealingly engaged within the aperture and extends into the plenum to control air flow out of the plenum and into the engine. The tuning sleeve is tubular with a pattern of vents through its surface to control flow rate. The vents may be drilled, punched or otherwise cut through the sleeve to control air flow. After being vented, the sleeve is reinserted into the filter housing and the filter is installed on the engine.

主权项

1. A tunable air filter for an internal combustion engine, comprising:
a. a housing, said housing further comprising a base member and a cap member, said base member having an aperture there through for passing filtered air to said engine intake, said aperture circumscribed by a cylindrical neck extending from a surface of said base member for sealed engagement with said engine, and said cap member being removable from said housing; b. a filter element comprising a tubular filter media extending axially from an annular first end circumscribing said removable cap member to an annular second end circumscribing said base member and defining a plenum within said housing; c. a tuning sleeve sealingly engaged within the aperture of said housing and extending into said plenum, said tuning sleeve comprising cylindrical walls conforming to the cylindrical neck and removably inserted therein, whereby said tuning sleeve is removable from said cylindrical neck and housing independent of said filter element by removal of said cap member, said tuning sleeve further comprising a plurality of vents there through collectively defining a calibrated total open area to permit the passage of a calibrated flow of filtered air from said plenum to said engine.