Claims
- 1. A method of recovering fuel vapor in a fuel dispensing installation including a nozzle having a fuel delivery passage and a vapor return passage having a vapor intake port, a vapor return line from the vapor return passage of the nozzle to a fuel tank and including a motor-driven pump to pump fuel vapor from the nozzle to the tank, the method comprising:
- a) establishing a motor amperage value indicative of a blocked vapor return passage;
- b) monitoring the motor running amperage and comparing the motor running amperage to the amperage value from step a);
- c) modifying operation of the vapor pump if the motor running amperage exceeds the amperage value from step a) for a predetermined length of time; and
- d) continuing fuel delivery after modifying operation of the vapor pump.
- 2. The method of claim 1 wherein the step of modifying the operation of the vapor pump comprises stopping operation of the vapor pump.
- 3. The method of claim 1 wherein the step of modifying the operation of the vapor pump comprises reducing the speed of the vapor pump to idle.
Parent Case Info
This is a divisional application claiming the benefit of application Ser. No. 08/909,284 filed Aug. 11, 1997, entitled Onboard Vapor Recovery Detection Nozzle in the name of Seifollah S. Nanaji, pending.
Divisions (1)
|
Number |
Date |
Country |
Parent |
909284 |
Aug 1997 |
|