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US 5,685,278 AGranted
Fuel supply system
AssigneeLucas Industries Limited
InventorsPeter Francis Bradford, Peter John Bartlett
Life of this patent
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AssigneeLucas Industries Limited
InventorsPeter Francis Bradford, Peter John Bartlett
Estimating the term…
A filter system forming part of the fuel system of a compression ignition engine includes a housing which carries a filter element. The housing has a first inlet which opens into a chamber defined between the housing and chamber the first inlet being connected to a fuel tank, and a first outlet for fuel which has passed through the element and which is connected to a fuel injection pump. The housing has a second inlet which is connected to the chamber and receives heated fuel from the fuel pump and a second outlet which is connected to the chamber through a port. The second outlet is connected to the fuel tank. A third outlet is connected to the second inlet and is connected to a flame type starting aid of the engine. Valve means responsive to the temperature of the fuel in the chamber controls fuel flow through said port.
A fuel filter system which forms part of the fuel supply system of a compression ignition engine, the engine being provided with a flame type starting aid system, the filter system including a first inlet which in use receives fuel from a fuel supply tank, a first outlet which is connected in use, to a fuel inlet of a fuel pumping apparatus which supplies fuel to the engine and a fuel filter element interposed between the first inlet and the first outlet, a second inlet connected in use to receive heated fuel leaving the pumping apparatus, a second outlet connected in use to the fuel supply tank, a third outlet for connection to the starting aid system, said third outlet being in constant communication with said second inlet and fuel temperature responsive valve means for controlling the flow of fuel through said second outlet.
Dependencies are inferred from the claim text.