INTAKE MANIFOLD WITH INTEGRATED FUEL RETURN PASSAGE

Abstract

The application relates to an intake manifold integrated drain rifle. An intake manifold to reduce external fuel drain lines is provided. The intake manifold includes an intake manifold curved portion and a distribution portion in fluid communication with the intake manifold curved portion. The intake manifold includes a flange extending radially outward from the distribution portion. The flange includes an internal fuel passage system with a first end and a second end. The internal fuel passage system includes a plurality of inlet openings distributed between the first end and the second end of the internal fuel passage system and configured to receive excess fuel from a plurality fuel injectors. The internal fuel passage system includes an outlet opening between the first end and the second end of the internal fuel passage system and in excess fuel receiving communication with the plurality of inlet openings. The outlet opening is configured to distribute the excess fuel out of the internal fuel passage system.

Documents