Purge fuel flow rate determination method
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United States of America Patent
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-
Sep 10, 2002
Grant Date -
N/A
app pub date -
Mar 22, 2001
filing date -
Sep 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of determining a purge fuel mass flow rate from a fuel vapor control system to an internal combustion engine having a compressor for delivering purge gas from the fuel vapor control system to the engine. The temperature rise of the purge gas passing through the compressor is determined. Then, a specific heat ratio of the purge gas is determined as the function of the temperature rise. The purge fuel mass flow rate is determined as a function of specific heat ratio of the purge gas.
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