초록 ▼

A fuel vapor leak detection assembly (10) having a pressure sensor (20) which is adapted to be selectively and operatively positioned within a fuel fill vent hose (22) in a non-on-board refueling vapor recovery system and which detects fuel vapor leaks. The pressure sensor (20) includes a generally

A fuel vapor leak detection assembly (10) having a pressure sensor (20) which is adapted to be selectively and operatively positioned within a fuel fill vent hose (22) in a non-on-board refueling vapor recovery system and which detects fuel vapor leaks. The pressure sensor (20) includes a generally rectangular housing portion (44) and a terminal portion (42) which communicatively connects the sensor (20) to a controller. A conventional pressure sensing device (56) is contained within housing portion (44). Sensor (20) further includes two opposed, generally hollow vent line connection ends or portions (46), (48) which connect to vent hose (22). Portions (44), (46), and (48) cooperatively form a generally cylindrical pressure sensing passageway (54) in which pressure sensing device (56) resides, thereby allowing the device (56) to accurately sense and measure the value or amount of fuel vapor pressure traveling through passageway (54).

대표청구항 ▼

[ What is claimed is:] [1.] A vapor leak detection assembly for use with a vehicle of the type having a fuel tank, a first member which is communicatively coupled to said fuel tank and which selectively receives fuel and which communicates said received fuel to said fuel tank, said received fuel pro

[ What is claimed is:] [1.] A vapor leak detection assembly for use with a vehicle of the type having a fuel tank, a first member which is communicatively coupled to said fuel tank and which selectively receives fuel and which communicates said received fuel to said fuel tank, said received fuel producing vapor and pressure within said fuel tank, said vehicle further having a second member which is communicatively coupled to said first member and to said fuel tank and which communicates at least a portion of said vapor, which is contained within said fuel tank, to said first member, said assembly comprising:a pressure sensor having first and second hollow end portions which are selectively connected to said second member and which cooperatively allow at least a portion of said vapor to be received by said sensor, said pressure sensor utilizing said at least a portion of said vapor to create a measurement value of said pressure within said fuel tank; andan electronic controller which is coupled to said pressure sensor, which receives said measurement value, and which uses said measurement value to detect fuel vapor leakage from said fuel tank.