Evaporative emissions system check valve monitor for GTDI engines

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United States of America Patent

PATENT NO 9957924
SERIAL NO

15225662

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Abstract

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Methods and systems are provided for conducting a dual test monitor for the presence or absence of undesired evaporative emissions in a vehicle fuel system and evaporative emissions control system. In one example, the dual test monitor includes conducting an evaporative emissions test diagnostic procedure during both boosted and non-boosted conditions during a single drive cycle. In this way, results from the test diagnostic procedure conducted under boost conditions may be compared to the results of the test diagnostic procedure under non-boosted conditions, to unambiguously diagnose functionality of a plurality of components in the fuel system and evaporative emissions system, which may thus reduce undesired evaporative emissions.

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Patent Owner(s)

  • FORD GLOBAL TECHNOLOGIES, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dudar, Aed M Canton, US 489 3983

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