Patent ID: 6782926
Filing Date: 2004-08-31
Classification: F01P

Abstract:
A fluid refilling and pressure testing apparatus for filling and pressure testing cooling systems comprising:a first fluid circuit, said first fluid circuit comprising: a delivery conduit adapted at a first end for sealed engagement with the pressurized coolant fluid circuit of an internal combustion engine; said delivery conduit in sealed communication at a second end with a fluid supply; means to pressurize said fluid supply communicated to said second end of said delivery conduit; a return conduit adapted at a first end for sealed communication with said coolant fluid circuit; said return conduit communicating at second end with a reservoir through a means to impede fluid flow; said means to impede fluid flow impeding the flow of coolant fluid communicated from said return conduit thereby increasing coolant fluid pressure in said pressurized coolant fluid circuit to a determined fluid pressure level; said means to imped fluid flow venting said coolant fluid pressure substantially instantaneously to said reservoir once said determined fluid pressure level is reached thereby creating a surge of fluid through said coolant fluid circuit and said return conduit; whereby pressurized fluid from said delivery conduit circulates through said coolant fluid circuit and exits through said return conduit to said reservoir in the first fluid circuit in one or a plurality of said surges of fluid to thereby purge said coolant fluid circuit containing gas or solids into said reservoir.