Patent ID: 7556031

Claim:
A fuel efficiency enhancing structure for use in an internal combustion engine, comprising: a generally conical-shaped flow path having an inlet through which at least one of air and fuel enters into said generally conical-shaped flow path and an outlet through which said at least one of air and fuel exits from said generally conical-shaped flow path, an inner volume of said generally conical-shaped flow path being defined by a wall interconnecting said inlet and said outlet, said outlet having an outlet circumference smaller than an inlet circumference of said inlet; at least one tab disposed on said wall, said at least one tab protruding from said wall into said inner volume of said generally conical shaped flow path; and at least one notch formed on said wall, said at least one notch having an opening at said outlet of said generally conical-shaped flow path and a closed end defined by said wall at a location along said wall between said inlet and said outlet.