Measuring and testing – With fluid pressure – Motor part or auxiliary
Reexamination Certificate
2007-01-16
2007-01-16
Williams, Hezron (Department: 2856)
Measuring and testing
With fluid pressure
Motor part or auxiliary
Reexamination Certificate
active
10484974
ABSTRACT:
In a method for testing the functional reliability of a fuel-tank venting valve which is provided in a tank system of a motor vehicle in particular, is connected to an intake manifold and is triggerable by a control unit, a pressure source is provided for testing the tank system for leaks by using excess pressure or a vacuum, and the test of the functional reliability of the fuel-tank venting valve is performed on the basis of at least one performance quantity of the pressure source. In order to achieve a short diagnostic time and a high degree of diagnostic certainty, the fuel-tank venting valve is triggered to open or close, and a certain change in pressure is implemented. The at least one performance quantity of the pressure source is detected, and a properly opening and closing fuel-tank venting valve is determined from the performance quantity thus detected.
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Lederer Dieter
Lederle Karl-Bernhard
Streib Martin
Fitzgerald John
Kenyon & Kenyon LLP
Robert & Bosch GmbH
Williams Hezron
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