Patent ID: 6806092
Filing Date: 2004-10-19
Classification: G01N,Y10T

Abstract:
A method for detection of combustion gases in the coolant system of an internal combustion engine of the type having an access opening to the cooling system and an engine vacuum port, said method comprising the steps of:providing a detection apparatus having a transparent tube filled inside, at least in part, with combustion gas sensitive fluid; said tube including an inlet fitting with a throughpassage to the tube, the throughpassage including a check valve to block fluid flow from the tube, and a vacuum conduit with an engine vacuum port connection member from the tube; operating the engine with an open cooling system access opening; connecting the vacuum conduit vacuum port connection member to an engine vacuum port of said engine, connecting the inlet fitting to the cooling system access opening of said engine to thereby draw a gas flow from the cooling system through the fluid; and observing the fluid to detect any visual change indicative of combustion gas derived from the cooling system.