STRUCTURE FOR ARRANGING NOx-REDUCING APPARATUS OF CONSTRUCTION MACHINE

[PROBLEM] To provide a mounting structure for an NOx reduction system, which can widen a surrounding space of a hydraulic pump, can isolate from each other a reduction catalyst, which also serves as a heat source, and a hydraulic hose connected to the hydraulic pump, and can be applied even to a sma...

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Bibliographische Detailangaben
1. Verfasser:	KAMIYA, SHOHEI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION DREDGING ENGINE PLANTS IN GENERAL FIXED CONSTRUCTIONS FOUNDATIONS GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HYDRAULIC ENGINEERING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SOIL SHIFTING STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	[PROBLEM] To provide a mounting structure for an NOx reduction system, which can widen a surrounding space of a hydraulic pump, can isolate from each other a reduction catalyst, which also serves as a heat source, and a hydraulic hose connected to the hydraulic pump, and can be applied even to a small-width construction machine. [SOLUTION] Disclosed is a mounting structure for an NOx reduction system for a hydraulic excavator. The NOx reduction system includes a PM collection filter 20 to be arranged in an exhaust passage of an engine 14 to collect suspended particulate matter in exhaust gas from the engine 14, a urea SCR catalyst 22 for reducing and purifying nitrogen oxides in the exhaust gas from the engine 14, a urea water spay device 23 for spraying a urea water into the exhaust passage of the engine 14, a urea water feeder 25 for feeding the urea water to the urea water spray device 23, and a urea water storage tank 24 for storing therein the urea water to be guided to the urea water feeder 25. In the mounting structure, the counterweight 12 is provided with a recessed section 12a formed therein, the urea SCR catalyst 22 is arranged in the recessed section 12a, and the PM collection filter 20 is arranged in the engine compartment 11. The urea SCR catalyst 22 and PM collection filter 20 are arranged to form an "L" pattern.