Fuel System Control

摘要

A method of controlling a fuel system includes determining the opening of a pressure relief valve and initiating a reseat strategy for the valve. The fuel system comprises a source of high pressure fuel and a pressure relief valve having at least one inlet fluidly coupled to the source of high pressure fuel and at least one outlet. The pressure relief valve has a closed position and at least one open position in which fuel is able to pass from the inlet to the outlet. The method comprises the steps of
continuously measuring the pressure of the fuel in the fuel source, determining whether the pressure relief valve is in an open position, and generating an open signal if it is determined that the pressure relief valve is in an open position.

主权项

1. A method of controlling a fuel system of an engine, said fuel system comprising:
a source of high pressure fuel; a pressure relief valve having at least one inlet fluidly coupled to the source of high pressure fuel and at least one outlet;
said pressure relief valve having a closed position in which fuel is not able to pass from the at least one inlet to the at least one outlet and at least one open position in which fuel is able to pass from the at least one inlet to the at least one outlet;wherein the pressure relief valve is actuated such that when the pressure of the fuel in the fuel source exceeds a valve opening pressure, the fuel pressure causes the pressure relief valve to move to a first open position;said method comprising the steps of:
continuously measuring the fuel pressure in the fuel source; determining whether the pressure relief valve is in an open position by determining whether the measured pressure is equal to or greater than a preset pressure threshold, which is set at the valve opening pressure; and generating an open signal if it is determined that the pressure relief valve is in an open position.