Malfunction-determining device for exhaust gas purifying device and malfunction-determining method for exhaust gas purifying device
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United States of America Patent
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Jul 12, 2016
Grant Date -
Aug 27, 2015
app pub date -
Feb 26, 2014
filing date -
Feb 26, 2014
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Abstract
A malfunction-determining device for an exhaust gas purifying device, which includes a filter device and a pressure measuring device, includes a usability determiner being configured to determine whether or not the pressure measuring device is usable based on a pressure measured by the pressure measuring device and an exhaust gas flow rate, a frozen-state determiner being configured to determine whether or not the pressure measuring device is frozen, and a malfunction determiner being configured to determine that the pressure measuring device has a malfunction when the usability determiner determines that the pressure measuring device is unusable and the frozen-state determiner determines that the pressure measuring device is not frozen.
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