Fuel pickup return line and separator

Details Fuel pickup return line and separator Fuel pickup return line and separator

2004-11-09

2008-08-12

Morris, Lesleyb D. (Department: 3611)

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

C180S182000, C123S509000, C123S510000, C123S514000

Reexamination Certificate

active

07410022

ABSTRACT:
Systems, methods, and assemblies for providing improved fuel management to fuel injected engine systems of off-road vehicles, such as snowmobiles, personal watercraft, motorcycles, utility vehicles, and all-terrain vehicles. The fuel-injected engine systems can return fuel after passing through a pressure regulator located either upstream or downstream of the engine. Fuel may be returned to the fuel pump through various routes, rather than simply returning the fuel into the fuel of the fuel tank. Fuel may be returned directly to the fuel pump upstream of all fuel pickups or upstream of some fuel pickups and downstream from other fuel pickups. Some embodiments include a vapor separator located downstream of the pressure regulator but somewhere upstream of the fuel pump.

REFERENCES:
patent: 4288086 (1981-09-01), Oban et al.
patent: 6216809 (2001-04-01), Etou et al.
patent: 6575145 (2003-06-01), Takahashi
patent: 6626155 (2003-09-01), Ueda et al.
patent: 6857419 (2005-02-01), Harvey et al.
patent: 6932061 (2005-08-01), Tsuruta

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