CN204082269U - A kind of diesel particulate trap subregion electric heating reclaimer - Google Patents
A kind of diesel particulate trap subregion electric heating reclaimer Download PDFInfo
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- CN204082269U CN204082269U CN201420515687.8U CN201420515687U CN204082269U CN 204082269 U CN204082269 U CN 204082269U CN 201420515687 U CN201420515687 U CN 201420515687U CN 204082269 U CN204082269 U CN 204082269U
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- diesel particulate
- electric heating
- particulate trap
- reducer pipe
- supporting disk
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Abstract
A kind of diesel particulate trap subregion electric heating reclaimer, connected to form successively by engine exhaust suction tude, the large end of air inlet reducer pipe, packing casing and the large end of reducer pipe of giving vent to anger, supporting disk is made up of annulus and many spokes being disposed radially, and butterfly is through bearing and be fixed on the spoke of supporting disk, step motor shaft is connected through key with the axle sleeve of butterfly.Resistance wire is arranged in diesel particulate trap passage.When needs regenerate, stepper motor driven rotary flapper, to regeneration zone, makes the flow in this region decline at once, connects resistance wire energising simultaneously, reaches the object of regeneration.This apparatus structure is simple, can long-play, and has the advantage such as easy accessibility, reliable performance.
Description
Technical field
The utility model relates to vehicle exhaust after-treatment system, is specifically related to a kind of device diesel particulate trap being carried out to subregion electric heating regeneration.
Background technique
Diesel engine is due to its high thermal efficiency, low CO
2the advantages such as discharge, and be widely used in transport service.But its discharge quantity of particulate matter large (discharge amount is 30 times ~ 80 times of same displacement gasoline engine), cause severe contamination to environment, harm humans is healthy, thus seriously limits its development.Therefore, strict emission standard requires that effectively, reliably technology is granular material discharged to reduce.Technically, only lean on emission controls by improving combustion and improve fuel qualities and be difficult to satisfied current emission standard.At present, the diesel engine meeting " state IV " Abgasgesetz generally have employed post-processing technology, and following stricter Abgasgesetz proposes higher requirement by post-processing technology.Diesel particulate trap (DPF, Diesel Particulate Filter) be generally acknowledged the most effective particle purifying device (physics traps diesel particle, efficiency is usually higher than 95%), be also one of technology that in current purification technics, commercial prospect is best.
The deposition of diesel particulate in DPF inside can make its two ends pressure drop raise, and affects engine performance, therefore needs to remove the particulate matter of deposition, i.e. regeneration techniques.Wherein, electric heating regeneration techniques is the technology be widely studied, but its regenerating power is large, and vehicle power only can provide limited power, for this reason, by realizing the regeneration of single low-power to DPF subregion.On subregion electric heating regeneration techniques, AM General automobile Global Tech running company has the system of a set of maturation, uses venetian blind to realize subregion, but there is baroque defect.
Model utility content
The purpose of this utility model is to provide a kind of when vehicle power only can provide limited power, by DPF subregion thus realize single low-power regeneration diesel particulate trap subregion electric heating reclaimer.
The purpose of this utility model is achieved in that a kind of diesel particulate trap subregion electric heating reclaimer, comprise Electric heating appliance, engine exhaust suction tude connects the small end of conical air inlet reducer pipe, the large end of air inlet reducer pipe is provided with suction port flange, the large end of conical reducer pipe of giving vent to anger is provided with air outlet flange, before columnar packing casing, rear end flange is connected with the air outlet flange bolt on the suction port flange on the large end of air inlet reducer pipe and the large end of reducer pipe of giving vent to anger respectively, supporting disk is made up of the many spokes that annulus and annulus internal orifice are disposed radially, between the clamping suction port flange on the large end of air inlet reducer pipe of the ring part of supporting disk and the front end flange of packing casing, the diesel particulate trap that its suction port is divided into 8 fanned partitions is arranged in packing casing, the axle of stepper motor penetrates in engine exhaust suction tude and air inlet reducer pipe along the center line of air inlet reducer pipe, and the shell of supporting disk bearing is welded on many spokes of supporting disk, butterfly is made up of axle sleeve and the sector be arranged on axle sleeve, and the axle sleeve of butterfly is fastened on the axle of stepper motor in suit mode through key, and the axle sleeve of butterfly is fixed on supporting disk bearing inner race, 8 groups of resistance wires of described Electric heating appliance are arranged in each passage of diesel particulate trap 8 fanned partitions, the central angle of the sector of described butterfly is 45 °, and the radius of this sector is less than the inner chamber radius of packing casing.
Described engine exhaust suction tude is provided with bearing at the perforating position of the axle of stepper motor: the outer ring of this bearing is welded on engine exhaust suction tude tube wall, and the axle of stepper motor is fixed on the inner ring of this bearing.
Spoke on described supporting disk is 8 uniform spokes.
Described often group resistance wire is 3, and 3 resistance wires in parallel connection are arranged in back-shaped aciculiform in the passage of each fanned partition of diesel particulate trap; The resistance wire wire harness mouth of this resistance wire on packing casing is drawn and is connected with the power supply circuits of described Electric heating appliance.
Described DPF packing cloth plays protection diesel particulate trap and exempts from the effect damaging and seal, and is convenient to dismounting simultaneously.
The stepping motor control circuit also having single-chip microcomputer and be connected with single-chip microcomputer, this single-chip microcomputer is connected with the power supply circuits of above-mentioned Electric heating appliance.
There is between described diesel particulate trap and packing casing DPF packing cloth.
The beneficial effects of the utility model are:
1, the utility model apparatus structure is simple, and design is unique, can long-play.Conventional instrument, equipment is used to build.
2, butterfly subregion.Butterfly turns to regeneration zone, and now the flow in this region declines at once thus serves metering function.
3, regenerating power is low.Utilize the vehicle power of limited power, by DPF subregion thus realize single low-power regeneration.
4, easy accessibility.When changing filter medium, only need open air outlet flange, mobile DPF packing cloth, can realize changing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 a, Fig. 2 b are the plan view of supporting disk shown in Fig. 1 and left view respectively.
Fig. 3 is DPF subregion schematic diagram.
Fig. 4 a, Fig. 4 b are the resistance wire circuit distribution map of each DPF fanned partition and the resistance wire inserted mode figure of whole DPF respectively.
Fig. 5 is butterfly location map.
Embodiment
Fig. 1 illustrates a kind of diesel particulate trap subregion electric heating reclaimer, comprise Electric heating appliance, engine exhaust suction tude 1 connects the small end of conical air inlet reducer pipe 2, the large end of air inlet reducer pipe is provided with suction port flange, the large end of conical reducer pipe 5 of giving vent to anger is provided with air outlet flange, before columnar packing casing 4, the suction port flange that rear end flange is held greatly with air inlet reducer pipe 2 respectively and the air outlet flange bolt that reducer pipe 5 of giving vent to anger is held greatly are connected, supporting disk 3 is made up of the many spokes that annulus and annulus internal orifice are disposed radially, see Fig. 2 a, Fig. 2 b, between the clamping suction port flange on the large end of air inlet reducer pipe 2 of the ring part of supporting disk 3 and the front end flange of packing casing 4, the diesel particulate trap 7 that its suction port is divided into 8 fanned partitions is arranged in packing casing 4, the axle of stepper motor 12 penetrates in engine exhaust suction tude 1 and air inlet reducer pipe 2 along the center line of air inlet reducer pipe, and the shell of supporting disk bearing 9 is welded on many spokes of supporting disk 3, butterfly 8 is made up of axle sleeve and the sector be arranged on axle sleeve, and the axle sleeve of butterfly 8 is fastened on the axle of stepper motor 12 in suit mode through key, and the axle sleeve of butterfly 8 is fixed on supporting disk bearing 9 inner ring, the resistance wire of described Electric heating appliance is arranged in diesel particulate trap 7 passage, the central angle of the sector of described butterfly 8 is 45 ° (see Fig. 5), and the radius of this sector is less than the inner chamber radius of packing casing.Air inlet reducer pipe 2 and reducer pipe 5 symmetrical shape of giving vent to anger.The annulus of supporting disk 3 and spoke integrated setting.Engine exhaust suction tude 1 is provided with bearing at the perforating position of the axle of stepper motor 12: the outer ring of this bearing is welded on engine exhaust suction tude tube wall, and the axle of stepper motor is fixed on the inner ring of this bearing.Spoke on supporting disk 3 is 8 uniform spokes.Often organizing resistance wire is 3, and 3 resistance wires in parallel connection are arranged in the passage of each fanned partition in 8 fanned partitions of DPF with back-shaped aciculiform; The resistance wire wire harness mouth 10 of these 8 groups of resistance wires on packing casing 4 is drawn and is connected (see Fig. 3, Fig. 4 a, Fig. 4 b) with the power supply circuits of described Electric heating appliance, is energized respectively heats by power supply circuits.The stepping motor control circuit also having single-chip microcomputer and be connected with single-chip microcomputer, this single-chip microcomputer is connected with the power supply circuits of above-mentioned Electric heating appliance, to control the break-make of power supply.There is between diesel particulate trap 7 and packing casing 4 DPF packing cloth 6.
See Fig. 1, a kind of diesel particulate trap subregion electric heating reclaimer comprises: engine exhaust suction tude 1, air inlet reducer pipe 2, supporting disk 3, packing casing 4, reducer pipe 5 of giving vent to anger, DPF packing cloth 6, diesel particulate trap (DPF) 7, butterfly 8, supporting disk bearing 9, resistance wire wire harness mouth 10, single-chip microcomputer 11, stepper motor 12.
Engine exhaust suction tude 1 is motor exhaust relief opening; Air inlet reducer pipe 2 plays the effect being become large footpath by path; Packing casing 4 respectively with the suction port flange on the large end of air inlet reducer pipe 2, supporting disk 3, the air outlet Flange joint of giving vent to anger on the large end of reducer pipe 5; Reducer pipe 5 of giving vent to anger plays the effect in the footpath that to be diminished by large footpath.
Butterfly 8 and packing casing 4 have certain intervals (i.e. gap allows air-flow pass through), object be region residing for restriction butterfly 8 play metering function by flow, and reduce to regenerate power demand.
Butterfly 8 and stepper motor 12 running shaft are connected and fixed by key.When needs regenerate, stepper motor 12 rotarily drives butterfly 8 and turns to regeneration zone, and now the flow in this region declines at once, connects the resistance wire energising in this region simultaneously, thus reaches the object of regeneration.
Stepper motor 12 running shaft is connected by bearing with engine exhaust suction tude 1 tube wall, and passes through seal with elastometic washer.For avoiding high temperature failure seal washer, the distance of engine exhaust suction tude 1 tube wall and diesel particulate trap (DPF) 7 is as far as possible partially long.
Supporting disk 3 and supporting disk bearing 9, engine exhaust suction tude 1 tube wall and bearing all adopt and are welded and fixed.
Resistance wire wire harness mouth 10 is concentrated wire harness mouths of the resistance wire on butterfly.
Air inlet reducer pipe 2, supporting disk 3, packing casing 4, reducer pipe 5 of giving vent to anger, butterfly 8 size need to do respective change according to DPF size.
DPF packing cloth 6 plays protection diesel particulate trap 7 and exempts from the effect damaging and seal, and is convenient to dismounting simultaneously.
What single-chip microcomputer 11 adopted is programming Control program voluntarily, mainly judges whether regeneration according to the emission level of motor, regeneration limit loading, the average driving cycle of vehicle and the number of regeneration zone and regenerating power.During regeneration, regional recovery time, regeneration intervals time can be calculated in conjunction with above-mentioned parameter, then consider that a regeneration safety coefficient just obtains a basic control strategy.For the light truck that " state III " discharges, than the DPF being 1 ~ 1.5, coupling displacement volume show that the recovery time is 3 ~ 5 minutes, the regeneration intervals time is 10 ~ 15 minutes, the average loading level of DPF can be made like this to control under the level of 2 g/L, great impact can not be produced on the work of motor.
See Fig. 2, supporting disk 3 is made up of 8 that annulus and annulus internal orifice are disposed radially uniform spokes, its annulus and spoke integrated setting.
Always be divided into 8 subregions (forming 8 fan-shaped gas inlet mouths) see Fig. 3, DPF, be respectively subregion 1 ~ subregion 8.Its reason is: when adopting electric heating to regenerate whole DPF, require that power is about 15 ~ 20 kW, but vehicle power far can not meet this power, and subregion electric heating Regenerated energy effectively reduces regeneration requirements power, but subregion is too many, control system is complicated, and subregion very little, the area of single raw partition is again large, and regeneration requirements power is still larger; Therefore, consider the Current limited Control of regenerating power that vehicle power can provide and butterfly 8, whole DPF incoming flow section flat is divided into 8 subregions, during regeneration, regenerates wherein a certain location according to a definite sequence at every turn.
See Fig. 4 a, Fig. 4 b, in 8 fanned partitions of DPF each fanned partition passage in resistance wire adopt many resistance wires in parallel (3 resistance wires, 6 lead-in wires, in Fig. 4 a, the head end of three resistance wires is respectively 101,103 and 105, tail end is respectively 102,104 and 106), in Fig. 4 b, its inserted mode is that back-shaped needle-like is inserted, and insertion depth at 10 ~ 20 mm, and is close to wall installation.This mounting type can make the particulate matter rapid combustion being deposited on upstream, and the heat of generation is transmitted to downstream by air-flow, thus drives the regeneration in whole region.It is even that the resistance wire adopted over the whole of the sector is furnished with partition heating, the feature that thermal stress is little.Resistance wire for thermal regeneration selects nickel chrome wire (Cr20Ni80), and diameter is 0.5 mm, and its advantage is good in oxidation resistance, and not yielding under high temperature, plasticity is good, homogeneous heating.
See Fig. 5, butterfly 8 and stepper motor 12 running shaft are connected and fixed by key.When needs regenerate, stepper motor 12 rotarily drives butterfly 8 and turns to regeneration zone, and now the flow in this region declines at once, connects the resistance wire energising in this region simultaneously, thus reaches the object of regeneration.Butterfly 8 and packing casing 4 have certain intervals, object be region residing for restriction butterfly 8 play metering function by flow, and reduce regeneration power demand.
Claims (6)
1. a diesel particulate trap subregion electric heating reclaimer, comprise, Electric heating appliance, it is characterized in that, engine exhaust suction tude (1) connects the small end of conical air inlet reducer pipe (2), the large end of air inlet reducer pipe (2) is provided with suction port flange, the large end of conical reducer pipe of giving vent to anger (5) is provided with air outlet flange, before columnar packing casing (4), the suction port flange that rear end flange is held greatly with air inlet reducer pipe (2) respectively and the air outlet flange bolt that reducer pipe of giving vent to anger (5) is held greatly are connected, supporting disk (3) is made up of the many spokes that annulus and annulus internal orifice are disposed radially, between the clamping suction port flange on the large end of air inlet reducer pipe (2) of the ring part of supporting disk (3) and the front end flange of packing casing (4), the diesel particulate trap (7) that its suction port is divided into 8 fanned partitions is arranged in packing casing (4), the axle of stepper motor (12) penetrates in engine exhaust suction tude (1) and air inlet reducer pipe (2) along the center line of air inlet reducer pipe, and the shell of supporting disk bearing (9) is welded on many spokes of supporting disk (3), butterfly (8) is made up of axle sleeve and the sector be arranged on axle sleeve, and the axle sleeve of butterfly is fastened on the axle of stepper motor (12) in suit mode through key, and the axle sleeve of butterfly is fixed on supporting disk bearing (9) inner ring, 8 groups of resistance wires of described Electric heating appliance are arranged in each passage of diesel particulate trap (7) 8 fanned partitions, the central angle of the sector of described butterfly (8) is 45 °, and the radius of this sector is less than the inner chamber radius of packing casing.
2. a kind of diesel particulate trap subregion electric heating reclaimer according to claim 1, it is characterized in that, described engine exhaust suction tude (1) is provided with bearing at the perforating position of the axle of stepper motor (12): the outer ring of this bearing is welded on engine exhaust suction tude tube wall, and the axle of stepper motor is fixed on the inner ring of this bearing.
3. a kind of diesel particulate trap subregion electric heating reclaimer according to claim 2, is characterized in that, the spoke on described supporting disk (3) is 8 uniform spokes.
4. a kind of diesel particulate trap subregion electric heating reclaimer according to claim 3, it is characterized in that, described often group resistance wire is 3, and 3 resistance wires in parallel connection are arranged in back-shaped aciculiform in the passage of diesel particulate trap (7) each fanned partition; The resistance wire wire harness mouth (10) of this resistance wire on packing casing (4) is drawn and is connected with the power supply circuits of described Electric heating appliance.
5. a kind of diesel particulate trap subregion electric heating reclaimer according to claim 4, it is characterized in that, the stepping motor control circuit also having single-chip microcomputer and be connected with single-chip microcomputer, this single-chip microcomputer is connected with the power supply circuits of above-mentioned Electric heating appliance.
6. a kind of diesel particulate trap subregion electric heating reclaimer according to claim 5, is characterized in that having DPF packing cloth (6) between described diesel particulate trap (7) and packing casing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420515687.8U CN204082269U (en) | 2014-09-09 | 2014-09-09 | A kind of diesel particulate trap subregion electric heating reclaimer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420515687.8U CN204082269U (en) | 2014-09-09 | 2014-09-09 | A kind of diesel particulate trap subregion electric heating reclaimer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082269U true CN204082269U (en) | 2015-01-07 |
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ID=52174998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420515687.8U Withdrawn - After Issue CN204082269U (en) | 2014-09-09 | 2014-09-09 | A kind of diesel particulate trap subregion electric heating reclaimer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196597A (en) * | 2014-09-09 | 2014-12-10 | 西华大学 | Sectionalized electrical heating regeneration device for diesel particulate filter |
| CN106703943A (en) * | 2017-02-17 | 2017-05-24 | 西华大学 | Back-flushing regenerating device for diesel engine particulate trap |
-
2014
- 2014-09-09 CN CN201420515687.8U patent/CN204082269U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196597A (en) * | 2014-09-09 | 2014-12-10 | 西华大学 | Sectionalized electrical heating regeneration device for diesel particulate filter |
| CN104196597B (en) * | 2014-09-09 | 2016-07-06 | 西华大学 | A kind of diesel particulate trap subregion electrical heating regenerating unit |
| CN106703943A (en) * | 2017-02-17 | 2017-05-24 | 西华大学 | Back-flushing regenerating device for diesel engine particulate trap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150107 Effective date of abandoning: 20160706 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150107 Effective date of abandoning: 20160706 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |