Method of controlling lambda sensor preheating and lambda sensor drive controller
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United States of America Patent
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Jul 25, 2017
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Feb 13, 2014
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Feb 27, 2013
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Abstract
A desired effective voltage can be ensured with certainty in a preheating control. An operation control part 52 reads a correction value c with respect to a battery voltage Vb at the time of performing correction based on preliminarily stored correlation between a battery voltage Vb of a vehicle-use battery and a correction value c (S104, S106), and compensates for lowering of an effective value of a pulse voltage by adding a correction value c to a duty ratio calculated by a predetermined arithmetic expression thus ensuring a desired effective voltage with certainty in a preheating control.
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