Patent ID: 8677737
Filing Date: 2014-03-25
Classification: F01N,F01P

Abstract:
1. An engine powered machine comprising: a NOx removal catalyst arranged in an exhaust passage of an engine to selectively subject to reduction treatment nitrogen oxides that flow through the exhaust passage, a reducing agent tank for storing a reducing agent, a reducing agent feeder for injecting into the exhaust passage the reducing agent stored in the reducing agent tank, a reducing agent temperature detector for detecting a temperature of the reducing agent stored in the reducing agent tank, a reducing agent heater for heating the reducing agent, which is stored in the reducing agent tank, with heat of an engine cooling medium, a valve device for opening/closing a cooling medium flow passage that guides the engine cooling medium to the reducing agent heater, a cooling medium temperature detector for detecting a temperature of the engine cooling medium, a heating apparatus for heating an interior of an operator's cab with heat of the engine cooling medium, an operator's cab temperature detector for detecting a temperature in the operator's cab, and a controller for receiving detected temperature signals outputted from the respective temperature detectors and controlling drive of the reducing agent feeder, valve device and heating apparatus, wherein: