Air/fuel ratio control apparatus

Details Air/fuel ratio control apparatus Air/fuel ratio control apparatus

1997-06-24

1999-03-23

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

F02M 2508

Patent

active

058846093

ABSTRACT:
Fuel vapor is produced in a fuel tank and absorbed in a canister. The absorbed fuel vapor is purged through a purge passage into an engine induction passage under predetermined engine operating conditions. A purge valve is provided in the purge passage to regulate the supply of gaseous mixture, including the absorbed fuel vapor, into the engine. A purge rate factor is determined corresponding to the concentration of evaporated fuel in the gaseous mixture. The concentration is determined utilizing the temperature of the fuel in the fuel tank.

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