Abstract

A return-flow electronic fuel pressure regulator for a fuel-injected engine fuel system is plumbed to the fuel rail and return line of the fuel system. The regulator includes a fill chamber connected to the fuel rail, a return chamber connected to the return line and a return reservoir disposed between the fill chamber and return chamber. Fuel flow from the fill chamber to the return reservoir is regulated via a diaphragm valve assembly. Fuel flow from the return reservoir to the return chamber is subject to restriction by an adjustable valve. Integral comparative pressure sensing means measures the fuel pressure drop between the return reservoir and return chamber. An electronic control module, preferably programmed to maintain a constant pressure drop between the return reservoir and return chamber, receives a signal from the pressure sensing means and outputs a power supply signal to the fuel pump to control pump speed.

IPC Classes  ?

• F02M 1/00 - Carburettors with means for facilitating engine's starting or its idling below operational temperatures

Abstract

A fuel pump for deployment in a fuel system for an internal combustion engine comprises a 3-phase brushless direct current motor, a sling vane impeller with blade-shaped sling vanes, sensorless electronic motor drive and an electronic controller. The controller is adapted to receive analog or pulse-width modulation inputs to control pump speed.

IPC Classes  ?

• F01C 1/356 - Rotary-piston machines or engines having the characteristics covered by two or more of groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member

Goods & Services

fuel pumps for land vehicles

Goods & Services

fuel pumps for land, water and air vehicles; mechanical fuel pressure regulators and electronic fuel pressure regulators, both for land, water and air vehicles; and fuel filters