CN101624931A - Purifying device of diesel engine particles - Google Patents
Purifying device of diesel engine particles Download PDFInfo
- Publication number
- CN101624931A CN101624931A CN200910162181A CN200910162181A CN101624931A CN 101624931 A CN101624931 A CN 101624931A CN 200910162181 A CN200910162181 A CN 200910162181A CN 200910162181 A CN200910162181 A CN 200910162181A CN 101624931 A CN101624931 A CN 101624931A
- Authority
- CN
- China
- Prior art keywords
- dpf
- diesel engine
- purifying device
- carrier
- engine particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002245 particle Substances 0.000 title claims abstract description 27
- 230000008929 regeneration Effects 0.000 claims abstract description 33
- 238000011069 regeneration method Methods 0.000 claims abstract description 33
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 230000003647 oxidation Effects 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 12
- 239000002912 waste gas Substances 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000013618 particulate matter Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Abstract
The invention relates to a purifying device of diesel engine particles, which is more beneficial to the passive regeneration of a DPF. The purifying device of the diesel engine particles is characterized in that the diesel particulate filter (DPF) and a diesel oxidation catalyst (DOC) are integrated into a whole body.
Description
Technical field
The present invention relates to a kind of purifying device of diesel engine particles.
Background technique
In diesel engine particles catcher (DPF) working procedure, particle can accumulate in the catcher, and this will cause the diesel exhaust gas back of the body to add, and the Economy and the power character of diesel engine operation worsen.Therefore, must regenerate to DPF under certain condition.
So-called dpf regeneration is meant that the particle that will trap in the DPF catcher removes it by physics or chemical mode.The dpf regeneration mode is divided into initiative regeneration and passive regeneration, general master, the passive mode that combines of adopting in the practical application.And the initiative regeneration mode use be more widely by back oil spout in the cylinder to improve exhaust gas temperature, reach 600 ℃ of particulate matters or above combustion temperature.Passive regeneration then is to use the cyclic regeneration technology, promptly at an oxidation catalyzer of DPF arranged in front (DOC), the NO in the waste gas is oxidized to NO
2, because NO
2Itself be the very strong oxygenant of chemism, in DPF subsequently, NO
2Can carry out oxidation reaction with particle more than 250 ℃.
Routine utilizes the particulate burning purifying system of aforesaid way to arrange in the supercharger outlet position to arrange DPF then under chassis by a DOC.When adopting this arrangement because DOC enters the loss of the exhaust gas temperature among the DPF, low exhaust gas temperature can not activate the passive regeneration of DPF, dpf regeneration is mainly by initiative regeneration, along with the oil spout number of times increases, oil consumption also increases, add the factor of encapsulation, catalyzer etc., the cost of particulate burning purifying system is greatly increased.
In addition, the accurate control that how to realize dpf regeneration is a great problem.The load level of the engine exhaust temperature of vehicle under different driving cycles, exhaust gas flow, particle has significant effects to the regeneration of DPF.When the DPF initiative regeneration, if do not controlled, the particle in the DPF can rapid combustion, produces a large amount of heats in the short time, and the temperature in the DPF carrier is up to thousands of degree, and this can increase the DPF carrier and hardening cracked/risk of fusion, thus DPF was lost efficacy.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of purifying device of diesel engine particles, more helps the passive regeneration of DPF.
Realize the object of the invention technological scheme:
A kind of purifying device of diesel engine particles is characterized in that: diesel engine particles catcher DPF and diesel oxidation catalyst DOC is integrated.
The housing internal upper part is provided with the DOC carrier, and the bottom is provided with the DPF carrier, and in housing, the housing upper end is connected to the inlet end awl with DOC carrier and DPF carrier package, and the lower end is connected to the outlet side awl.
The inlet end awl joins with supercharger outlet.
First temperature transducer of spray amount of fuel after being used to detect the DOC ignition and calculating dpf regeneration is housed on the inlet end awl.
On the inlet end awl exhaust gas oxygensensor that is used to detect oxygen in waste gas is housed also.
Be equipped with between DOC carrier and the DPF carrier be used for target temperature feedback and calculate dpf regeneration after second temperature transducer of spray amount of fuel.
The differential pressure pickup that is used to detect DPF particle collection degree is housed at DPF carrier upper/lower terminal.
The beneficial effect that the present invention has:
The present invention is integrated with diesel engine particles catcher DPF and diesel oxidation catalyst DOC, and places the supercharger outlet position, more helps the quick ignition of DOC, makes NO be transformed into NO
2Obtain more high efficiency, and improved the exhaust gas temperature that enters DPF, increase DPF passive regeneration odds.
By the inlet end wimble structure, can in the limited space of front deck, realize the layout of the DOC/DPF carrier of larger volume.
During actual travel, engine management system can be selected required regeneration mode according to the feedback signal of each sensor, realizes the regeneration of DPF security of system, economy.
Description of drawings
Fig. 1 is a DOC/DPF carrier package structural representation of the present invention;
Fig. 2 is a perspective view of the present invention;
Fig. 3 is an inlet gas end wimble structure schematic representation of the present invention.
Embodiment
Diesel engine particles catcher DPF and diesel oxidation catalyst DOC is integrated.As shown in Figure 1, housing 5 internal upper parts are provided with DOC carrier 2, and the bottom is provided with DPF carrier 4, and DOC carrier and DPF carrier package in housing, are provided with liner 3 between carrier and the housing, and the housing upper end is connected to inlet end awl 1, and the lower end is connected to outlet side awl 6.
As shown in Figure 2, be equipped with on the inlet end awl 1 be used to detect the DOC ignition and calculate dpf regeneration after first temperature transducer 8 of spray amount of fuel; On the inlet end awl exhaust gas oxygensensor 7 that is used to detect oxygen in waste gas is housed also.Be equipped with between DOC carrier and the DPF carrier be used for target temperature feedback and calculate dpf regeneration after second temperature transducer 9 of spray amount of fuel.The differential pressure pickup 10 that is used to detect DPF particle collection degree is housed at DPF carrier upper/lower terminal.
Vehicle driving-cycle has absolute influence to dpf regeneration, therefore need demarcate dpf regeneration under the different operating modes.Under different driving cycles, each sensor is input to signal in the engine management system, obtains regeneration mode under the different operating modes according to the result who demarcates.When travelling, engine management system can be selected required regeneration mode according to the feedback signal of sensor, realizes the regeneration of DPF security of system, economy.
Claims (7)
1, a kind of purifying device of diesel engine particles is characterized in that: diesel engine particles catcher DPF and diesel oxidation catalyst DOC is integrated.
2, purifying device of diesel engine particles according to claim 1, it is characterized in that: the housing internal upper part is provided with the DOC carrier, and the bottom is provided with the DPF carrier, with DOC carrier and DPF carrier package in housing, the housing upper end is connected to the inlet end awl, and the lower end is connected to the outlet side awl.
3, purifying device of diesel engine particles according to claim 2 is characterized in that: the inlet end awl joins with supercharger outlet.
4, purifying device of diesel engine particles according to claim 3 is characterized in that: first temperature transducer that spray amount of fuel after being used to detect the DOC ignition and calculating dpf regeneration is housed on the inlet end awl.
5, purifying device of diesel engine particles according to claim 4 is characterized in that: on the inlet end awl exhaust gas oxygensensor that is used to detect oxygen in waste gas is housed also.
6, purifying device of diesel engine particles according to claim 5 is characterized in that: be equipped with between DOC carrier and the DPF carrier be used for target temperature feedback and calculate dpf regeneration after second temperature transducer of spray amount of fuel.
7, purifying device of diesel engine particles according to claim 6 is characterized in that: the differential pressure pickup that is used to detect DPF particle collection degree is housed at DPF carrier upper/lower terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910162181A CN101624931A (en) | 2009-08-05 | 2009-08-05 | Purifying device of diesel engine particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910162181A CN101624931A (en) | 2009-08-05 | 2009-08-05 | Purifying device of diesel engine particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101624931A true CN101624931A (en) | 2010-01-13 |
Family
ID=41520898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910162181A Pending CN101624931A (en) | 2009-08-05 | 2009-08-05 | Purifying device of diesel engine particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101624931A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985222A (en) * | 2019-12-11 | 2020-04-10 | 潍柴动力股份有限公司 | Method and system for triggering DPF passive regeneration |
-
2009
- 2009-08-05 CN CN200910162181A patent/CN101624931A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985222A (en) * | 2019-12-11 | 2020-04-10 | 潍柴动力股份有限公司 | Method and system for triggering DPF passive regeneration |
| CN110985222B (en) * | 2019-12-11 | 2022-08-05 | 潍柴动力股份有限公司 | Method and system for triggering DPF passive regeneration |
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Open date: 20100113 |