Internal combustion engine oil pressure loss safety device

An internal combustion engine arrangement including a liquid-cooling system, lubricating oil system, a fuel supply, and means for interrupting the fuel supply when the pressure of the lubricating oil system drops below a minimum lubricating oil pressure corresponding to the prevailing load of the internal combustion engine, said interrupting means comprising:

• a first means operatively connected with the lubricating oil system and acted upon by the lubricating oil pressure, said first means being selectively displaceable from a first to a second position in response to the lubricating oil pressure corresponding to the prevailing load of the engine dropping below the predetermined minimum, a second flexible means operatively connected with the liquid cooling system and said first means, said flexible means being responsive to the pressure of the cooling medium of the liquid cooling system as a function of rotational speed for measuring magnitude representative of the load of the internal combustion engine, and means operatively connected with said first means and said second flexible means for compensating the pressure differential of said oil pressure and said pressure of the cooling medium over the entire load range of the internal combustion engine whereby upon the lubricating oil pressure reaching a minimum pressure said flexible means displaces said first means to said second position thereby causing the fuel supply to the internal combustion engine to be interrupted.