PROCESS AND APPARATUS FOR SEPARATING OUT AND REMOVING WATER PRESENT IN LIQUID FUELS, ESPECIALLY WATER FROM DIESEL OIL

摘要

A apparatus separates out and removes water present in liquid fuels. The fuel supplies an internal combustion engine by a fuel delivery pump (12). Water is separated out at a filter (5) having a collecting space (27) for collecting separated water and connected upstream of the suction side (11) of the fuel delivery pump (12). The pump suction action counteracts outflow of water from the collecting space (27). Depending on the amount of water collected, the pump suction action is negated, and an outlet valve at an outflow orifice (37) of the collecting space (27) is opened by a discharge (43, 53) producing a pressure gradient enabling the discharge of water from the collecting space (27) over a discharge period when the fuel delivery pump (12) is operating.

主权项

1. An apparatus for separating and removing water in liquid fuels, comprising:
a filter having a water separator, a filter inlet, filter outlet and a collecting space with an outflow orifice for collecting separated water; a fuel tank in fluid communication with said filter inlet through a line system; a fuel delivery pump of a fuel supply system for an internal combustion engine having a suction side connected in fluid communication with said filter outlet and a pressure side; a discharge having a pressure control for producing a pressure gradient at said outflow orifice to enable outflow of the separated water against a suction action of said fuel delivery pump at said filter during discharge intervals, said pressure control having a valve and a hydropneumatic accumulator with an oil side connected in fluid communication with said pressure side of said fluid delivery pump, said valve being connected to said filter inlet and said hydropneumatic accumulator to control fluid communication of said hydropneumatic accumulator with said filter; a water amount sensor in said collecting space for detecting amounts of the separated water collected in said collecting space and producing water amount signals representative of the amounts detected; and control electronics connected to said discharge and to said water amount sensor for receiving and processing the water amount signals and producing control signals and transmitting the control signals to said discharge to control said valve to control fluid communication between said filter and said hydropneumatic accumulator.