JP2011230522A - Combine - Google Patents

Abstract

The exhaust gas of a diesel engine can be effectively purified by devising the arrangement of an exhaust gas purification device having a DOC and a DPF.
A diesel engine (1) is arranged in a driving box (6) that supports a seat (5), and a radiator (2) is arranged on the right side of the diesel engine (1) in the driving box (6). Then, an exhaust gas purification device (3) provided with an oxidation catalyst and a diesel particulate filter is arranged at the rear lower part of the radiator (2) in the driving box (6) with the longitudinal direction thereof directed in the left-right direction of the airframe. Further, an exhaust pipe (4) extending from the diesel engine (1) to the exhaust purification device (3) is piped below the radiator (2).
[Selection] Figure 1

Description

  The present invention relates to a combine equipped with a diesel engine.

  As an exhaust gas treatment device for diesel engines, a technology has been developed in which particulate matter, mainly black smoke in exhaust gas, is collected by a diesel particulate filter and continuously burned by an oxidation reaction using an oxidation catalyst. .

  For example, as an exhaust gas purifying device for a diesel engine mounted and stored in an engine room such as a tractor or a combine, an exhaust purifying device is disposed and connected to be close to the upper side of the main body of the engine, and an oxidation catalyst (hereinafter referred to as an exhaust catalyst) Japanese Patent Application Laid-Open No. 2004-228688 describes a technique for internally installing a DOC) and a diesel diesel particulate filter (hereinafter referred to as DPF).

  It is possible to generate nitrogen dioxide from nitrogen oxides in the exhaust gas while maintaining a good oxidation activation temperature by DOC. Using this nitrogen dioxide as an oxidizing agent, carbon in the exhaust gas collected by the DPF is mainly used. Particulate matter (hereinafter referred to as PM), a part of unburned material (hereinafter referred to as SOF), and the like can be continuously burned and removed.

JP 2008-31955 A

  The combine covers the engine with a prime mover box, supports the seat on which the operator is boarded, and installs a grain tank for storing grains on the rear side of the prime mover box. The basic arrangement is a threshing device. For this reason, it is not possible to make a configuration in which an exhaust purification device in which DOC and DPF are housed on the upper side of the main body of the engine as the prior art is located close to each other.

  In view of this, the present invention provides an exhaust gas purification device that can effectively purify the exhaust gas of the diesel engine by devising the arrangement configuration of the exhaust gas purification device provided with the DOC and the DPF in the conventional combine. It is an object to provide a diesel engine exhaust gas treatment device.

The problems of the present invention are solved by the following technical means.
According to the first aspect of the present invention, a diesel engine (1) is disposed in a driving box (6) that supports a seat (5), and a radiator is disposed on the right side of the diesel engine (1) in the driving box (6). (2) is disposed, and an exhaust purification device (3) having an oxidation catalyst and a diesel particulate filter at the lower rear side of the radiator (2) in the driving box (6) is arranged with its longitudinal direction in the horizontal direction of the aircraft. It was set as the combine characterized by having arranged toward.

  With this configuration, the exhaust purification device (3) is covered by the drive box (6), and the exhaust purification device (3) is maintained at an appropriate high temperature. PM and SOF are collected by the curate filter and continuously and effectively purified by the oxidation catalyst.

  The invention according to claim 2 is characterized in that an exhaust pipe (4) extending from the diesel engine (1) to the exhaust purification device (3) is piped below the radiator (2). It was a combine.

  In this configuration, the main body and engine oil of the diesel engine (1) are cooled by the radiator (2), but the radiator (2) that does not receive the cooling air passing through the radiator (2) near the diesel engine (1). Since exhaust gas is sent from the exhaust pipe (4) to the exhaust purification device (3) provided at the lower rear portion of the radiator (2) after passing through the lower side, the exhaust purification device (3 ), PM and SOF are collected by the diesel particulate filter, and continuously and effectively purified by the oxidation catalyst.

  In the invention according to claim 3, the prime mover box (6) is inflated rearward to form a bulge portion (6a), an exhaust purification device (3) is disposed inside the bulge portion (6a), and The combine according to claim 1 or 2, characterized in that an air cleaner (7) is disposed above the bulge portion (6a).

  With this configuration, the exhaust purification device (3) is kept at a high temperature, and the air cleaner (7) is shielded from high heat by the bulge portion (6a) of the drive box (6), so the output of the diesel engine (1) is reduced. It becomes difficult to do.

  According to a fourth aspect of the present invention, the side cover (8) covering the outer side of the driving box (6) is configured to be openable outward. The combine described in 3 was used.

  With this configuration, by opening the side cover (8), maintenance of the radiator (2), the exhaust purification device (3), and the air cleaner (7) can be easily performed.

  According to the first aspect of the present invention, the exhaust purification device (3) provided with the oxidation catalyst and the diesel particulate filter is provided inside the prime mover box (6), so that the oxidation activation temperature by the oxidation catalyst can be maintained well. It is possible to produce nitrogen dioxide from nitrogen oxides in the exhaust gas. Particulate matter in the exhaust gas collected by the diesel particulate filter and part of the unburned nitrogen dioxide as an oxidant Substances can be burned and removed continuously.

  According to the second aspect of the present invention, the exhaust air purification device (3) including the oxidation catalyst and the diesel particulate filter and the exhaust pipe (4) are not exposed to the cooling air of the radiator (2) in the driving box (6). Therefore, it is possible to generate nitrogen dioxide from nitrogen oxides in the exhaust gas while maintaining a good oxidation activation temperature by the oxidation catalyst. By using this nitrogen dioxide as an oxidant, a diesel particulate filter Particulate matter and some unburned matter in the collected exhaust gas can be continuously burned and removed.

  According to the invention described in claim 3, in addition to the effects of the invention described in claim 1 or claim 2, the air cleaner (7) is shielded from the heated air in the driving box (6). The diesel engine (1) can be supplied with low-temperature and high-density air to maintain the output well.

  According to the invention described in claim 4, in addition to the effects of the invention described in claim 1, claim 2, or claim 3, the side cover (8) is opened to open the radiator (2) and the exhaust purification device (3). Can be easily maintained.

It is a left view of a combine. It is a back surface schematic diagram of a combine. It is a partial enlarged front view. It is a partial enlarged plan view.

Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.
Note that the left and right directions in the forward direction of the aircraft are respectively expressed as left and right.
The combine is provided with a reaping device 12 in front of a chassis 11 equipped with a crawler traveling device 10, a threshing device 13 on the left side, and a control unit 14 and a Glen tank 15 on the right side. The control unit 14 is provided with a step floor 18 on which an operator gets on the rear lower part of the control table 17 where the steering lever 16 is erected, and the diesel engine 1 is mounted on the chassis 11 on the rear side thereof. A driving box 6 covering the upper part is provided, and a seat 5 on which an operator sits is provided on the driving box 6.

  The grain tank 15 stores the grain harvested by the threshing device 13 and takes out the grain stored in the auger cylinder 19 standing at the rear and the auger 20 extending forward from the upper end of the miller cylinder 19 to the outside. ing.

  The diesel engine 1 generates power for driving all the drive units such as the crawler traveling device 10, the reaping device 12, the threshing device 13, and the like. A cooling fan 9 is provided on the right side of the diesel engine 1 and a radiator 2 is provided on the right outer side thereof. The right side of the driving box 6 is covered with a side cover 8 pivotally supported at the lower end so as to be opened and closed.

  Further, an exhaust gas purification device 3 is provided at the rear lower position of the radiator 2, a bulging portion 6a is formed in the lower rear portion of the driving box 6 so as to surround the radiator 2, and an air cleaner 7 is provided above the bulging portion 6a. Yes. An exhaust pipe 4 extending from the diesel engine 1 to the exhaust purification device 3 passes through the lower side of the radiator 2 and opens an exhaust discharge pipe 21 from the exhaust purification device 3 toward the lower side of the chassis 11.

  With such an arrangement of the exhaust gas purification device 3, the exhaust gas purification device 3 is warmed by the heat generated by the diesel engine 1 in the prime mover box 6 and receives almost no cooling air from the cooling fan 9. The exhaust gas is purified by effectively oxidizing the particulate matter mainly composed of black smoke in the exhaust gas with DOC.

3 and 4 show the configuration of the support 27 on which the poly tank 32 that supplies light oil fuel to the oil supply pipe 31 to the fuel tank 30 of the diesel engine 1 is placed.
The first arm 24 is pivotally supported on the support frame 22 of the whipping cylinder 19 by the first shaft 23, and the second arm 25 is pivotally supported on the first arm 24 downward by the second shaft 34. A support base 27 is pivotally supported at the lower end of 25 by a third shaft 26 so as to rotate horizontally. The support table 27 is provided with receiving plates 28 and 29 for receiving the poly tank 32. Such a use position of the support base 27 is close to the ground, and it is not necessary to lift the poly tank 3 so much, and the work is easy.

  The support base 27 can be stored along the body when not in use by folding the support base 27, the first arm 24, and the second arm 25 and covering the support base 27 with the cover 33.

DESCRIPTION OF SYMBOLS 1 Diesel engine 2 Radiator 3 Exhaust gas purification device 4 Exhaust pipe 5 Seat 6 Drive box 6a Swelling part 7 Air cleaner 8 Side cover

Claims (4)

  A diesel engine (1) is disposed in a driving box (6) that supports a seat (5), and a radiator (2) is disposed on the right side of the diesel engine (1) in the driving box (6). An exhaust purification device (3) provided with an oxidation catalyst and a diesel particulate filter is disposed at the rear lower part of the radiator (2) in the box (6) with its longitudinal direction directed in the left-right direction of the machine body. Combine.   The combine according to claim 1, characterized in that an exhaust pipe (4) from the diesel engine (1) to the exhaust gas purification device (3) is piped below the radiator (2).   The prime mover box (6) is inflated rearward to form a bulge portion (6a), an exhaust purification device (3) is disposed inside the bulge portion (6a), and at the upper part of the bulge portion (6a) The combine according to claim 1 or 2, wherein an air cleaner (7) is arranged.   The combine according to claim 1, 2 or 3, wherein the side cover (8) covering the outer side of the driving box (6) is configured to be openable outward.

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