초록 ▼

A method for monitoring the operation of a vacuum assist vapor recovery system used in conjunction with the fueling of ORVR and non-ORVR equipped vehicles including establishing an expected number of ORVR fueling operations for a fuel dispenser during a defined interval; counting the actual number o

A method for monitoring the operation of a vacuum assist vapor recovery system used in conjunction with the fueling of ORVR and non-ORVR equipped vehicles including establishing an expected number of ORVR fueling operations for a fuel dispenser during a defined interval; counting the actual number of ORVR fueling operations during said defined interval; comparing the actual number of fueling operations to the expected number of fueling operations; and permitting fueling operations to continue if the actual number is substantially equal to the expected number.

대표청구항 ▼

[ What is claimed is:] [1.] A diagnostic system associated with a detection system capable of determining if a vehicle being fueled has vapor recovery capability, said diagnostic system comprising a control system adapted to:a. compare a function dependent on a number of fueling operations determine

[ What is claimed is:] [1.] A diagnostic system associated with a detection system capable of determining if a vehicle being fueled has vapor recovery capability, said diagnostic system comprising a control system adapted to:a. compare a function dependent on a number of fueling operations determined to involve a vehicle having vapor recovery capability with a reference value, andb. detect an error condition in the vapor recovery detection system if said function and said reference value differ by more than a defined amount.