CN210622894U - Stacking type diesel engine aftertreatment injection system - Google Patents
Stacking type diesel engine aftertreatment injection system Download PDFInfo
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- CN210622894U CN210622894U CN201921094846.0U CN201921094846U CN210622894U CN 210622894 U CN210622894 U CN 210622894U CN 201921094846 U CN201921094846 U CN 201921094846U CN 210622894 U CN210622894 U CN 210622894U
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- urea
- injection system
- urea tank
- metering pump
- diesel engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a stacked diesel engine post-treatment injection system, which comprises a bracket base, a urea tank, an oil gas filter, a metering pump and a post-treatment controller; the injection system is matched and positioned above the emission treatment unit; the urea tank is connected to the input end of the metering pump through a urea suction pipe; the output end of the metering pump is connected to a nozzle seat of the emission treatment unit through a urea injection pipe; an air valve is arranged on the metering pump; the input end of the air valve is connected with the oil-gas filter through an air pipe, and the output end of the air valve is connected with a nozzle seat of the emission treatment unit through an air pipe; the bracket base is fixedly arranged on the whole vehicle frame; the urea tank is arranged on one side of the bracket base in a matching way; the oil gas filter, the metering pump and the post-treatment controller are all installed outside the urea tank in a matching way; the air valve is arranged on the upper part of the metering pump in a matching way. The utility model discloses structural design is simple, reasonable, arranges the convenience, can practice thrift the chassis space, sprays the precision height, efficient and effectual.
Description
Technical Field
The utility model relates to an engine exhaust handles technical field, concretely relates to stack formula diesel engine aftertreatment injection system.
Background
The commercial vehicle diesel engine post processor system is divided into two parts: urea injection systems and emission treatment systems; the urea injection system can calculate proper urea quantity according to the operation condition of the engine and related instructions and then accurately inject the urea into the exhaust pipe; the emission treatment system is responsible for continuously carrying out catalytic reduction reaction on ammonia and nitrogen oxides decomposed from the injected elements to finally generate harmless nitrogen (N2) and water (H2O).
At present, with the upgrading of regulations and the upgrading of requirements of users in the commercial vehicle industry, the requirement on the space of a chassis is increasingly tense, and the traditional frame arrangement urea injection system cannot meet the requirement of each host factory on the space arrangement.
Disclosure of Invention
To the problem that exists among the above-mentioned background art, the utility model provides a structural design is simple, reasonable, arranges the convenience, can practice thrift the chassis space, sprays high, efficient and effectual formula diesel engine aftertreatment injection system that stacks.
The utility model discloses a realize through following technical scheme:
the post-treatment injection system of the stacked diesel engine comprises a urea tank, an oil-gas filter, a metering pump and a post-treatment controller; the urea tank is connected to the input end of the metering pump through a urea suction pipe; the output end of the metering pump is connected with a urea injection pipe and is connected to a nozzle seat of the emission treatment unit through the urea injection pipe; an air valve is arranged on the metering pump; the input end of the air valve is connected with the oil-gas filter through an air pipe, and the output end of the air valve is connected with a nozzle seat of the emission treatment unit through an air pipe; the injection system is matched and positioned above the emission treatment unit; the injection system further comprises a support base; the bracket base is fixedly arranged on the whole vehicle frame; the urea tank is mounted on one side of the bracket base in a matching manner; the oil gas filter, the metering pump and the post-treatment controller are all installed outside the urea tank in a matching manner; the air valve is arranged on the upper part of the metering pump in a matching manner.
The tandem diesel engine aftertreatment injection system, wherein: the outer wall of the middle part of the urea tank is provided with a hoop, and the urea tank is arranged on the upper part of one side of the bracket base through the hoop and a fastener; the oil-gas filter is mounted in the middle of one end of the front side of the urea tank in a matching manner; the metering pump is installed on the upper part of the other end of the front side of the urea tank in a matching manner; and the aftertreatment controller is installed in the middle of the other end of the front side of the urea tank in a matching manner.
The tandem diesel engine aftertreatment injection system, wherein: the outer wall of the urea tank is embedded with a threaded hoop; the urea tank is fixedly arranged on the upper part of one side of the bracket base through a thread hoop and a fastener.
The tandem diesel engine aftertreatment injection system, wherein: the urea suction pipe is arranged at the top of the urea tank; the top of the urea tank is also provided with a sensor in a matching way.
The tandem diesel engine aftertreatment injection system, wherein: the support base is made of aluminum alloy materials, mounting holes are formed in the bottom of the support base, and the support base is matched with fasteners to be assembled and connected with a mounting support on a whole vehicle frame through the mounting holes.
The tandem diesel engine aftertreatment injection system, wherein: and a protective cover is arranged at the top of the injection system.
The tandem diesel engine aftertreatment injection system, wherein: and the injection system is unified in the same direction with a cooling liquid path, an air path, a urea path and a circuit interface which are connected with the whole vehicle.
Has the advantages that:
the utility model discloses stack formula diesel engine aftertreatment injection system structural design is reasonable, arrange in emission treatment unit top, add the support base and with support base fixed mounting on whole car frame, avoid the influence of abominable road environment to closing the piece, and the urea jar matches and installs in support base one side, the oil gas filter, measuring pump and aftertreatment controller all match and install in the urea jar outside, the pneumatic valve matches and sets up in the upper portion of measuring pump, each structural arrangement is compact, the chassis space has been practiced thrift, conveniently arrange in whole car, the distance between urea injection system and the emission treatment unit has also been shortened, effectively reduce urea injection pipeline length, avoid the injection precision loss because of the pipeline overlength leads to, the injection precision has not only been improved, still reduce the interior urea storage capacity of injection pipeline, urea produces the crystallization in nozzle department accumulation when avoiding sweeping. Meanwhile, the bracket base made of aluminum alloy supports all parts and is connected with the whole vehicle bracket, so that the weight of the whole injection system is reduced; the air valve is used for assisting the atomization of the urea, so that the atomization effect of the urea in a nozzle seat of the emission treatment unit can be effectively improved, and the conversion efficiency of nitrogen oxides is improved; the urea tank is fixed on the bracket through a threaded clamp on the outer wall, so that the loosening of the urea tank is avoided; the top of the injection system is provided with a protective cover for protecting related parts and wire harnesses in the injection system, so that the failure rate is reduced; the cooling liquid path, the gas path, the urea path and the circuit interface of the injection system connected with the whole vehicle are unified in one direction, so that the assembly and the connection of a host factory are facilitated; the injection system adopts engine coolant to unfreeze the inside of the urea box, so that urea crystallization is avoided.
The traditional diesel engine post-treatment injection system is arranged on a frame girder and is arranged in parallel with the emission treatment unit, so that the limited chassis space is occupied; and the utility model discloses the formula of stacking need not occupy the chassis space, has made things convenient for arranging of other spare parts of whole car.
Drawings
FIG. 1 is a front view of a stacked diesel engine aftertreatment injection system of the present invention;
FIG. 2 is a top view of the stacked diesel engine aftertreatment injection system of the present invention;
FIG. 3 is a left side view of the stacked diesel engine aftertreatment injection system of the present invention;
fig. 4 and 5 are schematic diagrams illustrating the assembly of the post-treatment injection system and the emission treatment unit of the stacked diesel engine of the present invention.
Detailed Description
As shown in fig. 1 to 3, the utility model discloses stack formula diesel engine aftertreatment injection system, including support base 1, urea jar 2, oil gas filter 3, measuring pump 4 and aftertreatment controller 5.
This support base 1 fixed mounting is on whole car frame, and it adopts aluminum alloy material and bottom to be equipped with mounting hole 11 and is equipped with the mounting bracket assembly connection on fastener and the whole car frame through mounting hole 11.
The outer wall of the urea tank 2 is embedded with a threaded hoop 21, and the urea tank 2 is fixedly arranged on the upper part of one side of the bracket base 1 through the threaded hoop 21 and matched with a fastener, so that the loosening of the urea tank 2 is avoided; wherein, this urea jar 2 top matching is equipped with sensor and urea absorption pipe, and this urea jar 2 is connected to measuring pump 4 through urea absorption pipe.
The oil gas filter 3 is installed in the middle of one end of the front side of the urea tank 2 in a matching mode and is used for filtering gas coming from the whole urea tank.
The metering pump 4 is a German European Bo Naer metering pump and is arranged on the upper part of the other end of the front side of the urea tank 2 in a matching way, the input end of the metering pump is connected with the urea sucking pipe of the urea tank 2, and the output end of the metering pump is connected with a urea injection pipe 41; the tip of the urea injection pipe 41 is connected to a nozzle holder 71 of the emission treatment unit 7. Meanwhile, the upper part of the metering pump 4 is also provided with an air valve 42, and the air valve 42 is electrically connected with the aftertreatment controller 5 through a wire harness 43; the input end of the air valve 42 is connected with an oil-gas filter, and the output end is connected to the nozzle seat 71 of the emission treatment unit 7 through an air pipe 421. The gas valve 42 synchronously delivers high-pressure gas to the nozzle holder 71 of the emission treatment unit 7 through the gas pipe 421 under the control of the aftertreatment controller 5, urea in the urea tank 2 is sucked out and metered and pressurized through the metering pump 4 and then is injected into the nozzle holder 71 of the emission treatment unit 7 through the urea injection pipe 41, and the high-pressure gas and the high-pressure urea are mixed and atomized in the nozzle holder 71 of the emission treatment unit 7 and then enter the inner cavity of the emission treatment unit 7.
The aftertreatment controller 5 is installed at the other end of the front side of the urea tank 2 in a matching manner, is responsible for calculating the injection amount and supplying power for communication, and controls the opening and closing frequency of the urea injection pipe 41 and the air pipe 421 of the metering pump 5 to achieve the target of metering injection.
As shown in fig. 4 and 5, the utility model discloses a stack in emission processing unit 7 top, do not occupy the chassis space, conveniently put the car overall arrangement, can minimize the utility model discloses stack formula diesel engine aftertreatment injection system and arrange of emission processing unit 7 distances and put the formula, can reduce urea injection precision loss and reduce urea volume of sweeping by a wide margin.
The utility model discloses the coolant liquid way, gas circuit, urea way and the pencil interface that formula diesel engine aftertreatment injection system and whole car are connected that stacks are unified in a direction, make things convenient for the host computer factory to assemble and connect.
The utility model discloses structural design is simple, reasonable, arranges the convenience, can practice thrift the chassis space, sprays the precision height, efficient and effectual. The traditional diesel engine post-treatment injection system is arranged on a frame girder and is arranged in parallel with the emission treatment unit, so that the limited chassis space is occupied; and the utility model discloses the formula of stacking need not occupy the chassis space, has made things convenient for arranging of other spare parts of whole car.
Claims (7)
1. A stacked diesel engine post-treatment injection system comprises a urea tank, an oil-gas filter, a metering pump and a post-treatment controller; the urea tank is connected to the input end of the metering pump through a urea suction pipe; the output end of the metering pump is connected with a urea injection pipe and is connected to a nozzle seat of the emission treatment unit through the urea injection pipe; an air valve is arranged on the metering pump; the input end of the air valve is connected with the oil-gas filter through an air pipe, and the output end of the air valve is connected with a nozzle seat of the emission treatment unit through an air pipe; the method is characterized in that: the injection system is matched and positioned above the emission treatment unit; the injection system further comprises a support base; the bracket base is fixedly arranged on the whole vehicle frame; the urea tank is mounted on one side of the bracket base in a matching manner; the oil gas filter, the metering pump and the post-treatment controller are all installed outside the urea tank in a matching manner; the air valve is arranged on the upper part of the metering pump in a matching manner.
2. A stacked diesel engine aftertreatment injection system according to claim 1 wherein: the outer wall of the middle part of the urea tank is provided with a hoop, and the urea tank is arranged on the upper part of one side of the bracket base through the hoop and a fastener; the oil-gas filter is mounted in the middle of one end of the front side of the urea tank in a matching manner; the metering pump is installed on the upper part of the other end of the front side of the urea tank in a matching manner; and the aftertreatment controller is installed in the middle of the other end of the front side of the urea tank in a matching manner.
3. A stacked diesel engine aftertreatment injection system according to claim 1 wherein: the outer wall of the urea tank is embedded with a threaded hoop; the urea tank is fixedly arranged on the upper part of one side of the bracket base through a thread hoop and a fastener.
4. A stacked diesel engine aftertreatment injection system according to claim 1 wherein: the urea suction pipe is arranged at the top of the urea tank; the top of the urea tank is also provided with a sensor in a matching way.
5. A stacked diesel engine aftertreatment injection system according to claim 1 wherein: the support base is made of aluminum alloy materials, mounting holes are formed in the bottom of the support base, and the support base is matched with fasteners to be assembled and connected with a mounting support on a whole vehicle frame through the mounting holes.
6. A stacked diesel engine aftertreatment injection system according to claim 1 wherein: and a protective cover is arranged at the top of the injection system.
7. A stacked diesel engine aftertreatment injection system according to claim 1 wherein: and the injection system is unified in the same direction with a cooling liquid path, an air path, a urea path and a circuit interface which are connected with the whole vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921094846.0U CN210622894U (en) | 2019-07-14 | 2019-07-14 | Stacking type diesel engine aftertreatment injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921094846.0U CN210622894U (en) | 2019-07-14 | 2019-07-14 | Stacking type diesel engine aftertreatment injection system |
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| Publication Number | Publication Date |
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| CN210622894U true CN210622894U (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921094846.0U Active CN210622894U (en) | 2019-07-14 | 2019-07-14 | Stacking type diesel engine aftertreatment injection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111942487A (en) * | 2020-07-31 | 2020-11-17 | 东风商用车有限公司 | 6X4 semi-trailer tractor |
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2019
- 2019-07-14 CN CN201921094846.0U patent/CN210622894U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111942487A (en) * | 2020-07-31 | 2020-11-17 | 东风商用车有限公司 | 6X4 semi-trailer tractor |
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