1997-02-24

Predicting Tank Vapor Mass for On-Board Refueling Vapor Recovery 970308

Methods to quantify the gasoline vapors displaced from a tank when refilling an ORVR vehicle are presented. Three predictive modeling techniques that approximate refueling vapor mass and composition are summarized. Some of these modeling techniques provide a convenient and reasonable approximation of real-life fueling events as demonstrated by testing conducted on production fuel system components. The application of the models to vehicle engineering is demonstrated in examples.

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