초록 ▼

An engine protective device that is responsive 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 ax

An engine protective device that is responsive 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, comprising: (a) a body having a main fuel passageway therein; cating with said passageway and adapted to be connected to the fuel supply li

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, comprising: (a) a body having a main fuel passageway therein; cating with said 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 main valve operator for maintaining said main valve in an open position as long as the lubricant pressure sensor indicates that the pressure in the engine\s lubricating system is above the predetermined value P1; (f) a bypass fuel passageway in said body, bypassing that portion of said main fuel passageway controlled by said main valve, to allow a predetermined restricted amount of fuel from said fuel inlet port to said fuel outlet port; (g) a normally closed bypass valve selectively blocking said bypass fuel passageway, and; (h) a manually-operable bypass valve actuator remote from said main body and connected to said bypass valve by a control line and wherein said portion of said main fuel passageway controlled by said main valve is separated from said bypass fuel passageway by a portion of said main body and said bypass valve will close unless said manually-operable bypass valve actuator is continually actuated to hold said bypass valve open.