Determining exhaust gas recirculation cooler fouling using DPOV sensor
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United States of America Patent
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Oct 24, 2017
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Nov 8, 2013
filing date -
Nov 8, 2013
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Abstract
Methods and systems are provided for determining degradation of an EGR cooler based on differential pressure across the EGR cooler during EGR flow. In one example, the differential pressure across the EGR cooler may be based on differential pressure across an EGR valve and a pressure downstream from the EGR valve with and without EGR flow. The pressure downstream from the EGR valve may be a compressor inlet pressure or an intake manifold pressure in a low pressure EGR system or high pressure EGR system, respectively.
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