Alarm and automatic stop mechanism for failure of pressure in engine oil and water circuits (Machine-translation by Google Translate, not legally binding)

摘要

Alarm mechanism and automatic stop due to lack of pressure in the oil and water circuits of engines, which is characterized by comprising two chambers, directly connected one to the water circuit and the other to the oil circuit, the first one being limited by a deformable and elastic membrane in the center of which rests a control device of a valve that puts in direct communication, when there is no water pressure, the oil inlet conduit with the exit through a chamber located on the opposite side of the diaphragm on the side on which the water pressure acts and the second-mentioned chamber having the annular shape to be formed between a rigid part provided with a cylindrical projection that plugs like a fixed piston into the axial cylindrical cavity of a piston which receives on its rear face the pressure of an opposing spring, whose chamber is connected by means of conduits arranged inside the fixed piston with the ca centrality of the movable piston in whose mouth has a unidirectional valve that prevents the passage of oil from the central cavity to the outlet duct, in order to force it to pass through the clearance existing between the fixed plunger and the walls of said cavity or through calibrated section ducts, so that when there is oil pressure, the plunger is displaced by overcoming the action of the opposing spring and, when there is no pressure, either due to lack of pressure in the oil circuit or in the circuit of water, by producing the return of the membrane to its normal position the opening of the valve that connects the inlet with the oil outlet making the pressure of the spring that the piston ejects the oil slowly being its timed action, by the gradual step of the oil lodged in its central cavity, which determines the activation of the alarm and engine stop devices coupled to the plunger rod. (Machine-translation by Google Translate, not legally binding)