Construction machine emission device
AssigneeYanmar Power Technology Co., Ltd.
InventorYoshihisa Ishikawa
Life of this patent
Estimating the term…
Abstract
A pivoting work vehicle includes an engine, an exhaust gas treatment apparatus, and a hood. The exhaust gas treatment apparatus is configured to treat exhaust gas from the engine. The hood is configured to cover the engine and the exhaust gas treatment apparatus. The exhaust gas treatment apparatus includes a DPF device and an SCR device. The exhaust gas is treated first by the DPF device, then by the SCR device. The DPF device and SCR device are each disposed so that the lengthwise directions thereof lie along the vertical direction. The DPF device and SCR device are arranged side-by-side in a direction orthogonal to the vertical direction.
Claims20
A construction machine comprising:
- a pivoting frame provided with a curved portion projecting rearwards in a plan view;
- an engine provided at a rear portion of the pivoting frame;
- an exhaust gas treatment apparatus configured to treat an exhaust gas from the engine, and including a first treatment device and a second treatment device coupled to the first treatment device via a coupling pipe;
- and
- a hood configured to cover the engine and the exhaust gas treatment apparatus,
- wherein the exhaust gas treatment apparatus is opposed to a rear curved portion of a peripheral wall of the hood,
- wherein the second treatment device is interposed between the rear curved portion of the peripheral wall of the hood and the first treatment device, and
- wherein the first treatment device is interposed between the engine and the second treatment device.
A construction machine comprising:
- an engine;
- an exhaust gas treatment apparatus configured to treat an exhaust gas from the engine, wherein the exhaust gas treatment apparatus includes:
- a first treatment device, and
- a second treatment device coupled to the first treatment device;
- and
- a hood configured to cover the engine and the exhaust gas treatment apparatus,
- wherein the exhaust gas treatment apparatus is opposed to a rear curved portion of a peripheral wall of the hood,
- wherein the second treatment device is interposed between the rear curved portion of the peripheral wall of the hood and the first treatment device, and
- wherein the first treatment device is interposed between the engine and the second treatment device.
A construction machine comprising:
- a pivoting frame provided with a curved portion projecting rearwards in a plan view;
- an engine provided at a rear portion of the pivoting frame;
- an exhaust gas treatment apparatus configured to treat an exhaust gas from the engine, and including a first treatment device and a second treatment device coupled to the first treatment device via a coupling pipe;
- and
- a hood configured to cover the engine and the exhaust gas treatment apparatus,
- wherein the first treatment device and the second treatment device are both;
- opposed to a rear curved portion of a peripheral wall of the hood, and
- positioned between the engine and a side of the pivoting frame in a right-left direction.
Dependencies are inferred from the claim text.