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发明公开
CN101688456A 发动机动力机械 失效 - 放弃专利权

发动机动力机械
摘要：
本发明提供一种发动机动力机械，其具有价格低廉并且能够防止还原剂过热的废气净化装置。发动机动力机械具有废气净化装置，该废气净化装置通过还原剂供给装置(4)向发动机(1)的排气管(2)内喷射还原剂，来使废气中的氮氧化物无害化，在该发动机动力机械中，具有通过控制器(12)控制驱动和停止的冷却风扇(7)来作为还原剂罐(5)的冷却装置，在该还原剂罐(5)内贮存通过还原剂供给装置(4)喷射的还原剂。控制器(12)在从还原剂温度检测器(6)输出的检测温度信号(a)高于存储在存储部(12b)中的冷却开始温度时驱动冷却风扇(7)，来开始对还原剂罐(5)进行冷却。
摘要（英）：

An engine powered machine having an exhaust purification device that is of low cost and in which a reducing agent is not overheated. ¢MEANS FOR SOLVING PROBLEMS! The engine powered machine has the exhaust purification device in which the reducing agent is injected by a reducing agent supply device (4) into an exhaust pipe (2) of an engine (1) to render nitrogen oxides in exhaust gas harmless. Theengine powered machine further has a cooling fan (7) as a cooling device for cooling a reducing agent tank (5) for containing the reducing agent injected by the reducing agent supply device (4), and the drive and stop of the cooling fan (7) are controlled by a controller (12). The controller (12) drives the cooling fan (7) to start to cool the reducing agent tank (5) when a detection temperature signal (a) outputted from a reducing agent temperature detector (6) becomes higher than a cooling start temperature stored in a storage section (12b).

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