Patent ID: 6499516
Filing Date: 2002-12-31
Classification: B67D

Abstract:
A fuel dispenser having a vapor recovery system comprising:a) a fuel delivery system adapted to deliver fuel along a fuel delivery path from a storage tank to a vehicle during a fueling operation; b) a variable speed vapor recovery system having a vapor recovery path to deliver vapors expelled from the vehicle to the storage tank when fuel is delivered during a fueling operation; c) a vapor flow sensor for determining a flow rate in said vapor recovery path; d) a vapor sensor bearing on hydrocarbon concentration within said vapor recovery path, wherein both sensors are associated with said vapor recovery path; and e) a control system for controlling said variable speed vapor recovery system, said control system coupled to said vapor flow sensor and said vapor sensor and adapted to determine the amount of vapors recovered through said vapor return path according to a flow rate and a measured hydrocarbon concentration within said vapor recovery path.