Patent ID: 6293981
Filing Date: 2001-09-25
Classification: F02B,F02M,Y10S

Abstract:
An arrangement of an air filter unit and a membrane carburetor, the arrangement comprising:a membrane carburetor having a carburetor housing defining an air intake channel through which air can be drawn;said carburetor housing further defining an interior space;a control membrane mounted in said interior space so as to partition said interior space into a fuel-filled control chamber and a compensation chamber;channel means provided in said carburetor housing for conducting fuel into said intake channel from said control chamber;said carburetor housing having an end whereat said compensation chamber is located;an air filter unit having an air filter housing engaging over said carburetor housing on said end thereof;said air filter housing defining a clean air space disposed above said compensation chamber;said air filter unit including an air filter mounted in said air filter housing for passing air into said clean air space;a flow space disposed downstream of said air filter and upstream of said air intake channel;said intake channel communicating with said flow space so as to permit air to flow from said flow space into said intake channel;a connecting stub having a pregiven volume and extending between said clean air space and said flow space for facilitating the flow of filtered air from said clean air space to said flow space;said flow space having a volume greater than said pregiven volume of said connecting stub; and,a structure defining a compensation channel branching off from said flow space and connecting said compensation chamber to said flow space.