CN109184890B - Loader engine aftertreatment system - Google Patents

Loader engine aftertreatment system Download PDF

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Publication number
CN109184890B
CN109184890B CN201811014052.9A CN201811014052A CN109184890B CN 109184890 B CN109184890 B CN 109184890B CN 201811014052 A CN201811014052 A CN 201811014052A CN 109184890 B CN109184890 B CN 109184890B
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China
Prior art keywords
engine
cabin
cover
treatment
loader
Prior art date
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Application number
CN201811014052.9A
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Chinese (zh)
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CN109184890A (en
Inventor
张碧荣
陈礼光
朱玉柱
覃海双
卢海宁
梁泽海
李�学
黄兴
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Guangxi Liugong Machinery Co Ltd
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Guangxi Liugong Machinery Co Ltd
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Priority to CN201811014052.9A priority Critical patent/CN109184890B/en
Publication of CN109184890A publication Critical patent/CN109184890A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/10Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers

Abstract

The invention discloses a loader engine post-processing system, which relates to the technical field of loader engine manufacturing and comprises a cabin, a radiator and an air inlet device, wherein the radiator and the air inlet device are arranged in the cabin and connected with an engine; the air inlet cabin and the aftertreatment cabin provided with the air inlet device are positioned above the engine; the top of the cabin is provided with a top cover, the rear part of the top cover is obliquely provided with a ventilating grid plate, the top cover is provided with an exhaust tail pipe in front of the ventilating grid plate, the bottom of the exhaust tail pipe is provided with a small exhaust pipe, one end of the small exhaust pipe extends into the exhaust tail pipe, and the small exhaust pipe is connected with the aftertreatment device. Compared with the prior art, the invention can reduce the influence of the heat generated by the post-treatment device on the cooling system of the whole machine and the air inlet system of the engine.

Description

Loader engine aftertreatment system
Technical Field
The invention relates to the technical field of loader engine manufacturing, in particular to an aftertreatment system for a loader engine.
Background
The emissions of pollutants in the exhaust gas of a diesel engine for the non-road mobile machinery mainly comprise hydrocarbons, nitrogen oxides, carbon monoxide, particles and the like, and GB20891-2014 standard is implemented, and is currently the third stage of the standard; the fourth stage of the country of the upgrade is expected to be discharged in 2020, and non-road machines such as a loader and the like in the fourth stage are required to be added with an after-treatment device in order to reach the standard of the discharged pollutants; a large amount of heat can be generated in the post-working process of the added post-treatment device, and the performance of a cooling system of the whole machine and an air inlet system of an engine can be greatly influenced.
Disclosure of Invention
The invention aims to provide an after-treatment system of an engine of a loader, which aims to reduce the influence of heat generated by an after-treatment device on a cooling system of the whole loader and an air inlet system of the engine.
The technical scheme adopted by the invention for solving the technical problem is as follows: the loader engine post-treatment system comprises a cabin, and a radiator and an air inlet device which are arranged in the cabin and connected with an engine, wherein the internal space of the cabin is divided into an air inlet cabin, a post-treatment cabin and an engine heat dissipation cabin by a transverse clapboard and two vertical clapboards arranged on the transverse clapboard; the rear treatment cabin and the air inlet cabin provided with the air inlet device are positioned above the engine; the top cover is arranged at the top of the rear treatment cabin of the engine room, the rear part of the top cover is obliquely provided with the ventilating grid plate, the top cover is provided with an exhaust tail pipe in front of the ventilating grid plate, the bottom of the exhaust tail pipe is provided with a small exhaust pipe, one end of the small exhaust pipe extends into the exhaust tail pipe, and the small exhaust pipe is connected with the rear treatment device.
In the technical scheme of the loader engine aftertreatment system, a more specific technical scheme may also be that: and the two sides of the rear treatment cabin of the engine cabin are respectively hinged with a side wing cover.
Further: the ventilating grating plate is obliquely arranged on the top cover in a manner of being high in front and low in back.
Further: and the transverse partition plate and the two vertical partition plates are respectively provided with sealing strips which are respectively abutted against the inner end faces of the side wing covers at two sides.
Further: the sealing strip is a rubber strip.
Further: the air intake compartment is located at the front of the nacelle.
Further: and an engine heat dissipation cover is arranged at the rear part of the engine room.
The rear in the sense of the invention refers to the side of the nacelle where the radiator is located.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects: 1. the loader engine post-processing system divides the internal space of the engine room into an air inlet cabin, a post-processing cabin and an engine radiating cabin through the transverse partition plate and the two vertical partition plates, and can perform cabin-division installation on the engine, the air inlet device and the post-processing device; particularly, the top cover at the rear part of the post-treatment cabin is provided with a ventilating grid plate, the top cover in front of the ventilating grid plate is provided with an exhaust tail pipe, a small exhaust pipe connected with a post-treatment device is inserted in the exhaust tail pipe, the post-treatment cabin forms negative pressure by the small exhaust pipe with small diameter and the exhaust tail pipe with large diameter, low-temperature air entering from the ventilating grid and hot air in the post-treatment cabin form convection pipe flow heat exchange, and the heat dissipation effect of the post-treatment cabin is enhanced; cold air is continuously sucked into the post-treatment cabin to exchange heat with hot air in the post-treatment cabin and then is led out of the post-treatment cabin along with exhaust, and the heat dissipation of the post-treatment cabin is well removed in the process; the influence of heat generated by an after-treatment device of the engine on a cooling system of the whole engine, an air inlet device of the engine and an air conditioning system is well solved, and the engine air conditioning system has good practical value; 2. the heat sources generating heat are thermally isolated through the sub-cabins, the structure is simple, the practicability is high, and the cost of the whole machine is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view illustrating the opening of the wing cover according to the embodiment of the present invention.
Fig. 3 is a schematic structural view of the wing cover according to the embodiment of the present invention when closed.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the loader engine aftertreatment system shown in fig. 1 comprises a cabin 1 and a radiator 4 and an air intake device 2 which are arranged in the cabin 1 and connected with an engine 3; the internal space of the engine room 1 is divided into an air inlet room, a rear treatment room and an engine heat dissipation room by a transverse clapboard 1-3 and two vertical clapboards arranged on the transverse clapboard 1-3, wherein the two vertical clapboards are respectively a first vertical clapboard 1-2 and a second vertical clapboard 1-4; a radiator 4 is arranged at the rear part of the engine heat dissipation cabin, an engine heat dissipation cover 1-1 is arranged at the rear part of the engine cabin 1, and an engine 3 connected with the radiator 4 is positioned at the front part of the engine heat dissipation cabin; the rear treatment cabin and the air inlet cabin provided with the air inlet device 2 are positioned above the engine 3, the air inlet cabin is positioned above the front part of the cabin, and the rear treatment cabin is positioned behind the air inlet cabin; a top cover 1-6 is arranged at the top of the rear treatment cabin of the cabin, a ventilating grid plate is obliquely arranged at the rear part of the top cover 1-6, and the ventilating grid plate is obliquely arranged on the top cover in a high front-back low manner; a tail pipe 1-5 is arranged on a top cover 1-6 in front of the ventilating grid plate, and the tail pipe 1-5 is arranged in the rear treatment cabin; the bottom of the tail pipe 1-5 is provided with a small exhaust pipe 1-8 of which the upper end extends into the tail pipe 1-5, and the lower end of the small exhaust pipe 1-8 is connected with an exhaust port of the post-processing device; in the present embodiment, two windows are opened on the nacelle 1 on both sides of the rear processing nacelle, and a side wing cover 1-7 is hinged to each window through a hinge shaft installed at the connecting edge above each window: the transverse partition plate 1-3, the first vertical partition plate 1-2 and the second vertical partition plate 1-4 are respectively provided with sealing strips on two sides, wherein the sealing strips are respectively abutted against the inner end surfaces of the side wing covers 1-7, and the sealing strips are rubber strips.
When the engine works, the internal space of the engine room is divided into the air inlet cabin, the post-treatment cabin and the engine heat dissipation cabin, so that the engine, the air inlet device and the post-treatment device can be installed in a cabin-divided mode, and heat generated by the engine, the air inlet device and the post-treatment device is thermally isolated; the post-treatment cabin forms negative pressure due to the small exhaust pipe with the small diameter and the exhaust tail pipe with the large diameter, so that convection pipe heat is formed between low-temperature air entering from the air-permeable grille and hot air in the post-treatment cabin, and the heat dissipation effect of the post-treatment cabin is enhanced; cold air is continuously sucked into the post-treatment cabin to exchange heat with hot air in the post-treatment cabin and then is led out of the post-treatment cabin along with exhaust, and the heat dissipation of the post-treatment cabin is well removed in the process; the influence of heat generated by an after-treatment device of the engine on a cooling system of the whole engine, an air inlet device of the engine and an air conditioning system is well solved, and the engine air conditioning system has good practical value.

Claims (7)

1. A loader engine aftertreatment system comprising a nacelle and a radiator and air intake device disposed within the nacelle and connected to an engine, characterized in that: the internal space of the engine room is divided into an air inlet room, a rear treatment room and an engine heat dissipation room by a transverse clapboard and two vertical clapboards arranged on the transverse clapboard, the radiator is arranged at the rear part of the engine heat dissipation room, and the engine is positioned at the front part of the engine heat dissipation room; the rear treatment cabin and the air inlet cabin provided with the air inlet device are positioned above the engine; the top cover is arranged at the top of the rear treatment cabin of the engine room, the rear part of the top cover is obliquely provided with the ventilating grid plate, the top cover is provided with an exhaust tail pipe in front of the ventilating grid plate, the bottom of the exhaust tail pipe is provided with a small exhaust pipe, one end of the small exhaust pipe extends into the exhaust tail pipe, and the small exhaust pipe is connected with the rear treatment device.
2. The loader engine aftertreatment system of claim 1, wherein: and the two sides of the rear treatment cabin of the engine cabin are respectively hinged with a side wing cover.
3. The loader engine aftertreatment system of claim 2, wherein: the ventilating grating plate is obliquely arranged on the top cover in a manner of being high in front and low in back.
4. The loader engine aftertreatment system of claim 3, wherein: and the transverse partition plate and the two vertical partition plates are respectively provided with sealing strips which are respectively abutted against the inner end faces of the side wing covers at two sides.
5. The loader engine aftertreatment system of claim 4, wherein: the sealing strip is a rubber strip.
6. The loader engine aftertreatment system of claim 5, wherein: the air intake compartment is located at the front of the nacelle.
7. The loader engine aftertreatment system of claim 6, wherein: and an engine heat dissipation cover is arranged at the rear part of the engine room.
CN201811014052.9A 2018-08-31 2018-08-31 Loader engine aftertreatment system Active CN109184890B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811014052.9A CN109184890B (en) 2018-08-31 2018-08-31 Loader engine aftertreatment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811014052.9A CN109184890B (en) 2018-08-31 2018-08-31 Loader engine aftertreatment system

Publications (2)

Publication Number Publication Date
CN109184890A CN109184890A (en) 2019-01-11
CN109184890B true CN109184890B (en) 2020-07-21

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Family Applications (1)

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CN201811014052.9A Active CN109184890B (en) 2018-08-31 2018-08-31 Loader engine aftertreatment system

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CN (1) CN109184890B (en)

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JP2003065047A (en) * 2001-08-30 2003-03-05 Komatsu Ltd Engine cooling structure of construction machine
JP2007283801A (en) * 2006-04-12 2007-11-01 Hitachi Constr Mach Co Ltd Construction machine
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CN202389474U (en) * 2011-11-10 2012-08-22 山东临工工程机械有限公司 Novel loading machine engine hood
CN103711620A (en) * 2013-12-04 2014-04-09 三一重机有限公司 Loader-digger and engine air intake system thereof
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CN104314676A (en) * 2014-09-05 2015-01-28 浙江耀锋动力科技有限公司 Complete silent power generator set structure
CN104769192A (en) * 2014-09-04 2015-07-08 株式会社小松制作所 Wheel loader
CN204877606U (en) * 2015-07-24 2015-12-16 厦门厦工机械股份有限公司 Engine exhaust purifier of loader in pit
CN205047196U (en) * 2015-08-13 2016-02-24 徐工集团工程机械股份有限公司 Dig rig piggyback pod structure soon
WO2016125201A1 (en) * 2015-02-02 2016-08-11 株式会社Kcm Industrial vehicle
CN106574456A (en) * 2014-12-26 2017-04-19 株式会社Kcm Operation machine
CN107237365A (en) * 2016-03-29 2017-10-10 株式会社Kcm Working truck

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US8997476B2 (en) * 2012-07-27 2015-04-07 Caterpillar Inc. Hydraulic energy recovery system
JP5840098B2 (en) * 2012-09-26 2016-01-06 株式会社クボタ Exhaust treatment device connection structure for work vehicles
US20140102483A1 (en) * 2012-10-12 2014-04-17 Caterpillar Inc. System and method to remove debris from a chamber
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Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003065047A (en) * 2001-08-30 2003-03-05 Komatsu Ltd Engine cooling structure of construction machine
JP2007283801A (en) * 2006-04-12 2007-11-01 Hitachi Constr Mach Co Ltd Construction machine
WO2010001629A1 (en) * 2008-06-30 2010-01-07 株式会社小松製作所 Working vehicle
JP2010059749A (en) * 2008-09-08 2010-03-18 Komatsu Ltd Utility vehicle
CN103842593A (en) * 2011-10-18 2014-06-04 株式会社Kcm Industrial use automobile
CN202389474U (en) * 2011-11-10 2012-08-22 山东临工工程机械有限公司 Novel loading machine engine hood
CN103906878A (en) * 2012-10-26 2014-07-02 株式会社小松制作所 Wheel loader
CN104285047A (en) * 2013-03-26 2015-01-14 株式会社小松制作所 Work vehicle and wheel loader
CN103711620A (en) * 2013-12-04 2014-04-09 三一重机有限公司 Loader-digger and engine air intake system thereof
CN203570409U (en) * 2013-12-09 2014-04-30 英轩重工有限公司 Novel construction machinery cooling system
CN104769192A (en) * 2014-09-04 2015-07-08 株式会社小松制作所 Wheel loader
CN104314676A (en) * 2014-09-05 2015-01-28 浙江耀锋动力科技有限公司 Complete silent power generator set structure
CN106574456A (en) * 2014-12-26 2017-04-19 株式会社Kcm Operation machine
WO2016125201A1 (en) * 2015-02-02 2016-08-11 株式会社Kcm Industrial vehicle
CN204877606U (en) * 2015-07-24 2015-12-16 厦门厦工机械股份有限公司 Engine exhaust purifier of loader in pit
CN205047196U (en) * 2015-08-13 2016-02-24 徐工集团工程机械股份有限公司 Dig rig piggyback pod structure soon
CN107237365A (en) * 2016-03-29 2017-10-10 株式会社Kcm Working truck

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