公开(公告)号：US20110173962A1

公开(公告)日：2011-07-21

申请号：US13121289

申请日：2009-09-24

申请人： Hirofumi Miwa ,  Yuuki Ishikawa ,  Satoshi Sawafuji ,  Hitoshi Nakanishi ,  Hideaki Murakami

发明人： Hirofumi Miwa ,  Yuuki Ishikawa ,  Satoshi Sawafuji ,  Hitoshi Nakanishi ,  Hideaki Murakami

IPC分类号： F01N3/02

CPC分类号： F01N3/021 ,  B01D46/0061 ,  B01D46/42 ,  B01D46/4218 ,  B01D2279/30 ,  F01N3/02 ,  F01N3/033 ,  F01N2260/022 ,  F01N2560/06 ,  F01P7/04 ,  F02M26/05 ,  Y02T10/20

摘要： Provided is a heat retention/cooling control device for a PM filter device, which controls the temperature of the outer periphery of the PM filter device to ensure an efficient burning in the PM filter device and prevents the influence of heat damage on the periphery of the PM filter device by effectively using moving air. An engine room and a cooling passage which are demarcated by a partition wall are provided in parallel in the front-back direction of an work machine, and an aftercooler, a cooling fan, and a PM filter device are provided in the cooling passage. When the exhaust temperature of exhaust gas is lower than a target temperature when PM is burned, the air volume of the cooling fan is controlled so as to decrease, thereby increasing the exhaust gas temperature. When the exhaust temperature of the exhaust gas is higher than the target temperature, the air volume of the cooling fan is controlled so as to increase, thereby enhancing the effect of cooling the outer periphery of the PM filter device.

摘要翻译： 本发明提供一种用于PM过滤装置的保温/冷却控制装置，其控制PM过滤装置的外周的温度，以确保PM过滤装置中的有效燃烧，并防止热损伤对周边的影响 PM过滤装置有效利用移动空气。 在工作机械的前后方向并列设置有被分隔壁划分的发动机室和冷却通路，在冷却通路中设置有后冷却器，冷却风扇和PM过滤装置。 当废气的排气温度低于PM燃烧时的目标温度时，控制冷却风扇的风量降低，从而提高废气温度。 当废气的排气温度高于目标温度时，控制冷却风扇的风量增加，从而提高对PM过滤装置的外周进行冷却的效果。