Hydraulic excavator

Patent metadata

Field	Value
Publication number	US-9200550-B2
Application number	US-201314114681-A
Country	US
Kind code	B2
Filing date	Apr 4, 2013
Priority date	Oct 16, 2012
Publication date	Dec 1, 2015
Grant date	Dec 1, 2015

Abstract

A hydraulic excavator includes an engine, a rotating frame, a vehicle body frame, a diesel particulate filtering device, a selective catalytic reduction device, and a connecting pipe. The diesel particulate filtering device and the selective catalytic reduction device are supported by a vehicle body frame. At least a portion of the connecting pipe includes an extendable bellows part. The connecting pipe connects the engine and the diesel particulate filtering device. The diesel particulate filtering device is located further away from the engine than the selective catalytic reduction device along a first direction on a horizontal plane. The first tubular body portion of the diesel particulate filtering device and the second tubular body portion of the selective catalytic reduction device are disposed apart from each other with a space therebetween in a plan view.

First claim

What is claimed is:

1. A hydraulic excavator comprising:
an engine;
a rotating frame configured to support the engine;
a vehicle body frame provided in a standing manner on the rotating frame, the vehicle body frame including a plurality of column members;
a diesel particulate filtering device configured to process exhaust from the engine, the diesel particulate filtering device being supported by the vehicle body frame, and the diesel particulate filtering device including…

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Mori Tadashi
• Himoto Manabu
• Nishimura Osamu
• Sanada Kenji

Classifications

• F01N3/2882

  Mechanical Engineering · mapped topic

• F01N2590/08

  Mechanical Engineering · mapped topic

• F01N2610/02

  Mechanical Engineering · mapped topic

• F01N3/033 Primary

  Mechanical Engineering · mapped topic

• F01N3/28

  Mechanical Engineering · mapped topic