Mohamed S. Meskouri - Bloomfield MI, US Gary H. Engel - Lake Orion MI, US Baltasar Clar - Rochester Hills MI, US Leon T. Wade - Bloomfield MI, US Awtar S. Kahlon - Farmington Hills MI, US
International Classification:
G01M 3/04
US Classification:
73 40, 73 491
Abstract:
A method of detecting a leak in a fluid system, which includes a switch that changes state according to pressure in the fluid system. The method includes changing pressure in the fluid system with a pump assembly. The pump assembly includes a predetermined leak that is in fluid communication with the fluid system and that causes the switch to change state after a predetermined time period. The method also includes detecting a leak in the fluid system if the switch changes state within an amount of time less than the predetermined time period.