Canister purge controller

Patent · Tue May 03 04:00:00 EDT 1988

OSTI ID:7224562

Kortge, J W; Piedmont, S L

The method of controlling the purge flow rate from a fuel vapor collection canister to the induction system of an internal combustion engine having a system for delivering a mixture of air and fuel to the induction system and a closed loop controller for adjusting the fuel delivered to the induction system in a fuel increasing or decreasing direction so as to maintain a predetermined air/fuel ratio, is described comprising the steps of: sensing the closed loop controller adjustment of the fuel delivered to the induction system; and progressively increasing the purge flow rate from the fuel vapor collection canister to the induction system during the period that the sensed closed loop controller adjustment in a fuel decreasing direction is less than a first predetermined value.

• Assignee: General Motors Corp., Detroit, MI
• Patent Number(s): US 4741318
• OSTI ID: 7224562
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CLOSED-LOOP CONTROL
CONTAINERS
CONTROL
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW RATE
FLUIDS
FUEL SYSTEMS
FUEL-AIR RATIO
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
VAPORS