Fuel vapor recovery system and method

Details Fuel vapor recovery system and method Fuel vapor recovery system and method

1991-06-27

1991-11-26

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123458, F02M 3302

Patent

active

050674692

ABSTRACT:
An internal combustion engine includes an air/fuel ratio control system for providing a desired fuel charge to the engine in relation to a measurement of inducted airflow. The mixture of inducted air and fuel is trimmed in response to an exhaust gas oxygen sensor for maintaining a desired air/fuel ratio. A fuel vapor recovery system is also included for inducting fuel vapors from the fuel system into the engine in proportion to inducted airflow. The desired fuel charge is corrected by a factor approximating response time of a change in vapor flow rate caused by a change in inducted airflow.

REFERENCES:
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patent: 4809667 (1989-03-01), Vranishi
patent: 4817576 (1989-04-01), Abe
patent: 4865000 (1989-09-01), Yajima

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