Fuel vapor control for internal combustion engine

Details Fuel vapor control for internal combustion engine Fuel vapor control for internal combustion engine

1995-02-07

1996-08-27

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

F02M 2508

Patent

active

055490948

ABSTRACT:
A fuel vapor control system for an internal combustion engine is constructed so as to first determine a basic purge gas quantity based on an operating condition of the engine, then corrects the basic purge gas quantity in accordance with an altitude at which the engine is located and determines a conclusive purge gas quantity. The conclusive purge gas quantity is determined so as to increase as the altitude becomes higher, whereby the escape of fuel vapor from the intake system of the engine can be prevented with efficiency and assuredness.

REFERENCES:
patent: 4137882 (1979-02-01), Thornburgh
patent: 4149504 (1979-04-01), Walters
patent: 4153025 (1979-05-01), Thornburgh
patent: 4961412 (1990-10-01), Furuyama
patent: 5020503 (1991-06-01), Kanasashi
patent: 5090388 (1992-02-01), Hamburg et al.
patent: 5263460 (1993-11-01), Baxter et al.
patent: 5351193 (1994-09-01), Poirier et al.

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