Fuel cap tester
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United States of America Patent
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-
Oct 9, 2001
Grant Date -
N/A
app pub date -
Jul 14, 1999
filing date -
Jul 14, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus and a method for testing the integrity of fuel or gas caps for leaks is disclosed. A microprocessor controls the pressurization of an air reservoir which selectively allows air to pass to either the combination of the fuel cap under test and a reference orifice or to only the reference orifice and computes the ratio of the time required for the pressure within the air reservoir to drop between predetermined pressure levels for the combination of the fuel cap under test and the reference orifice versus only the reference orifice and compares same against a standard ratio to determine whether the leakage rate through the fuel cap meets an acceptable limit.
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