Patent ID: 7372063
Filing Date: 2008-05-13
Classification: G01N

Abstract:
1. A process for detection of gas bubbles in a liquid in a water circuit for cooling an internal combustion engine adapted to a device comprising: a light source, a light detector, wherein the light source and the light detector are immersed in the liquid in the water circuit cooling the internal combustion engine, and a data controlling and processing unit linked to a client system, comprising the steps of: emitting light from the light source for acquisition of a first measurement and a subsequent measurement known as a successive measurement of light intensity perceived by the light detector, and for calculation of a variation between two successive measurements of said light intensity; incrementing a warning counter by a predefined value A when the variation in light intensity perceived by the light detector between two successive measurements is greater than the threshold S and decrementing said warning counter by a predefined value B in the opposite case; and sending to the client system information indicating that the bubble content is greater than an authorized maximum content when said warning counter exceeds a predefined alarm value C over a period greater than a predefined time delay period.