Patent ID: 6193500
Filing Date: 2001-02-27
Classification: B67D,F23G

Abstract:
A combustible fuel vapor emission control system, comprising:a combustible fuel storage tank;a dispenser, hose, and nozzle for dispensing combustible fuel into a vehicle, said nozzle being fluidly connected to said combustible fuel storage tank;a processor unit for processing excess combustible fuel vapor accumulating in said combustible fuel storage tank, which comprises a burner for thermally oxidizing excess combustible fuel vapor and a pump for maintaining a vacuum pressure on the vapor in said system;a first conduit disposed between said combustible fuel storage tank, said dispenser hose, and said nozzle for returning combustible fuel vapor from said nozzle to said combustible fuel storage tank;a second conduit disposed between said combustible fuel storage tank and said burner for venting excess combustible fuel vapor from said combustible fuel storage tank, said pump being disposed on said second conduit, between said combustible fuel storage tank and said burner, so that a vacuum side of said pump draws a vacuum in said storage tank and a pressure side of said pump pressurizes said burner; anda remote self-test monitor for detecting and recording, in real time, the pressure on the vapor in said system;wherein said remote self-test monitor detects and records the pressure on the vapor in said system whether or not combustible fuel is being dispensed.