Fuel pumping apparatus
AssigneeLucas Industries public limited company
InventorKenneth M. Harris
Life of this patent
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Abstract
A fuel pumping apparatus for supplying fuel to an internal combustion engine includes a pump having a body and a solenoid operated fuel control device. The current flow to the solenoid is controlled by a control circuit mounted on circuit boards located within an inner casing secured to the body. An outer casing surrounds the inner casing and defines a space which is connected with a fuel inlet, the space communicating with a fuel inlet of the pump. The flow of fuel through the space assists the cooling of the components of the control circuit.
Claims15
A fuel pumping apparatus for supplying fuel to an internal combustion engine comprising a fuel pump including a fuel pump body, solenoid operated means for controlling the output of the pump, an electronic control circuit for controlling the flow of electric current in the solenoid, an inner casing adapted to be mounted on the body of the fuel pump, said electronic circuit being mounted in said inner casing, an outer casing surrounding said inner casing and defining a space therebetween, a fuel inlet on said outer casing, said fuel inlet communicating with said space, a fuel outlet from said space connected to the fuel inlet of the pump and a heat insulating and electrically insulating plate serving to close an open end of the inner casing, said plate being interposed between a peripheral flange on the inner casing and the body of the pump, an insert supported within an aperture in said plate, said insert defining the fuel outlet from said space, and a pair of sealing means located between said insert and the flange of said inner casing and the body respectively.
Dependencies are inferred from the claim text.