Exhaust purifying device and working vehicle
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United States of America Patent
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Nov 12, 2019
Grant Date -
Aug 9, 2018
app pub date -
Feb 6, 2017
filing date -
Feb 6, 2017
priority date (Note) -
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Abstract
An exhaust purifying device mounted in a working vehicle includes: an exhaust passage through which an exhaust gas discharged from an engine flows; a throttle valve configured to change a passage area of the exhaust passage; an exhaust aftertreatment device disposed downstream of the throttle valve; and a valve controller configured to control an open degree of the throttle valve. The valve controller is configured to control the open degree of the throttle valve to be larger in a low load region below a predetermined load range and in a high load region exceeding the predetermined load range than in a medium load region that is the predetermined load range.
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