Method and system for prioritizing vehicle vacuum
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United States of America Patent
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Oct 14, 2014
Grant Date -
Sep 20, 2012
app pub date -
Mar 17, 2011
filing date -
Mar 17, 2011
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Abstract
A vacuum prioritization system for a vehicle is disclosed. In one example, use and availability of vacuum provided via vacuum sources is allocated to higher priority vacuum operated actuators when a pressure in the vacuum system exceeds a threshold pressure. The lower priority vacuum operated actuators have access to vacuum supplied via the vacuum sources when pressure in the vacuum system is less than a threshold pressure. The approach may allow higher priority actuators to operate for an extended amount of time.
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