초록 ▼

An engine protective device that is reponsive to low oil pressure to cut off or limit fuel flow to avoid or minimize the chance of engine damage. A spring-biased elongate main valve member includes an axial bore and an override spring-biased ball valve to selectively allow fuel flow through said axi

An engine protective device that is reponsive to low oil pressure to cut off or limit fuel flow to avoid or minimize the chance of engine damage. A spring-biased elongate main valve member includes an axial bore and an override spring-biased ball valve to selectively allow fuel flow through said axial bore. A remote override function is realized by use of a bypass valve controlled by a pneumatic or electrical switch. An override lock prevents a mechanical, local (i.e., not remote) override from being changed from an override position back to a normal or off position in the event of insufficient oil pressure.

대표청구항 ▼

An apparatus for controlling the flow of fuel in a fuel supply line of an internal combustion engine in response to pressure in the engine\s lubricating system and comprising: (a) a main body having a main fuel passageway therein; (b) a fuel inlet port and a fuel outlet port, each port communicating

An apparatus for controlling the flow of fuel in a fuel supply line of an internal combustion engine in response to pressure in the engine\s lubricating system and comprising: (a) a main body having a main fuel passageway therein; (b) a fuel inlet port and a fuel outlet port, each port communicating with said main fuel passageway and adapted to be connected to the fuel supply line of an internal combustion engine; (c) a lubricant pressure sensor for sensing the pressure in the engine\s lubricating system; (d) a main valve in said main fuel passageway for controlling the normal flow of fuel between said fuel inlet port and said fuel outlet port, said main valve closing when the lubricant pressure sensor indicates that the pressure in the engine\s lubricating system is below a predetermined value P1; (e) a bypass fuel passageway in said body, bypassing that portion of said main fuel passageway controlled by said main valve, and operable to allow a predetermined restricted amount of fuel to flow from said fuel inlet port to said fuel outlet port; (f) a normally closed bypass valve selectively blocking said bypass fuel passageway; and (g) a bypass valve actuator remote from said main body and controlling said bypass valve by a pressurized fluid control line; and wherein said bypass fuel passageway is at least partly outside of boundaries which define said main fuel passageway.