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Exhaust gas purifying device

An exhaust gas purification device and exhaust gas technology are applied in the direction of exhaust devices, noise reduction devices, exhaust treatment device diagnostic devices, etc., which can solve problems such as the cost of electrical wiring, the reduction of assembly workability, and the separation and movement of conduits. Achieve the effects of improving assembly efficiency, prolonging life, and facilitating maintenance operations

Inactive Publication Date: 2011-05-04
HITACHI CONSTRUCTION MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the detectors are distributed over the entire exhaust gas purification device, it takes time and effort to connect the electrical wiring.
Especially around the engine where the exhaust gas purification device is installed, there are many machines and pipes, so it is difficult to avoid these machines, pipes, etc., and there is a problem that the assembly workability is reduced.
[0009] In addition, in order to clean the filter for removing particulate matter, the pipes arranged on the outer peripheral side of each cylinder become obstacles when separating and moving each cylinder.
Therefore, when cleaning the filter for removing particulate matter, it is necessary to disassemble the duct, and there is a problem that the work efficiency is reduced.

Method used

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Embodiment Construction

[0042] Hereinafter, a case in which the exhaust gas purification device according to the embodiment of the present invention is mounted on a hydraulic excavator will be described in detail with reference to the drawings.

[0043] first, Figure 1 to Figure 11 The first embodiment of the exhaust gas purification device of the present invention is shown.

[0044] figure 1 Among them, reference 1 is a crawler-type hydraulic excavator as a construction machine, and the hydraulic excavator 1 generally includes: a self-driving undercarriage body 2; rotatably mounted on the undercarriage body 2, and 2 together constitute the upper revolving body 3 of the vehicle body; and the working device 4 provided on the front side of the upper revolving body 3 and capable of pitching and digging operations such as earth and sand. In addition, the undercarriage 2 and the upper revolving structure 3 are specific examples of the vehicle body of the present invention.

[0045] Here, the upper rev...

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PUM

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Abstract

The invention relates to an exhaust gas purifying device. A support member (40) is provided to a tubular member (23) of an upstream tube body (22). The support member (40) has mounted thereto a connector section (34C) of a first temperature detector (34) for detecting the temperature of exhaust gas flowing into an oxidation catalyst (25), a connector section (35C) of a second temperature detector(35) for detecting the temperature of exhaust gas flowing into a particulate matter removing filter (31), and a sensor section (39A) of a pressure detector (39) for detecting pressures across the particulate matter removing filter (31). Accordingly, the support member (40) can support at one place in a concentrated manner the connector sections (34C, 35C) of the temperature detectors (34, 35) andthe sensor section (39A) of the pressure detector (39), and harnesses on the controller side can be easily connected to the connector sections and the sensor section.

Description

technical field [0001] The present invention relates to an exhaust gas purification device suitable for removing harmful substances in exhaust gas discharged from an engine, for example. Background technique [0002] Generally, a construction machine such as a hydraulic excavator consists of an undercarriage that can run automatically, an upper revolving body that is rotatably mounted on the undercarriage, and a working device that is installed on the front side of the upper revolving body and can perform a pitching action. constitute. In addition, on the upper revolving body, an engine for driving a hydraulic pump is mounted on the rear of the revolving frame, and an exhaust gas purification device for removing harmful substances in the exhaust gas is installed on the exhaust pipe of the engine. [0003] In addition, as an exhaust gas purification device installed on a hydraulic excavator, there is known an oxidation catalyst that oxidizes and removes carbon monoxide (CO) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/02B01D41/04B01D53/86B01D53/94F01N3/24F01N3/28B01D46/42
CPCB01D46/2418B01D46/446B01D46/448B01D53/944B01D2255/1021B01D2279/30E02F9/00E02F9/0866F01N3/0211F01N13/008F01N2550/04F01N2560/08F01N13/0097F01N13/0093Y02T10/12B01D46/84
Inventor 神谷象平齐藤智之
Owner HITACHI CONSTRUCTION MACHINERY CO LTD
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