CN214887305U - Heavy-duty vehicle DPM tail gas after-treatment device and heavy-duty vehicle - Google Patents

Heavy-duty vehicle DPM tail gas after-treatment device and heavy-duty vehicle Download PDF

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CN214887305U
CN214887305U CN202121073358.9U CN202121073358U CN214887305U CN 214887305 U CN214887305 U CN 214887305U CN 202121073358 U CN202121073358 U CN 202121073358U CN 214887305 U CN214887305 U CN 214887305U
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heavy
dpm
oil
treatment device
exhaust gas
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王景致
孔涛
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Junfeng Electronic Control Technology Dalian Co ltd
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Junfeng Electronic Control Technology Dalian Co ltd
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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
    • Y02T10/40—Engine management systems

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Abstract

The utility model discloses a heavy-duty car DPM tail gas aftertreatment device and heavy-duty car, the device includes: a metering unit, the metering unit comprising: the oil inlet and the oil outlet are communicated with each other through an oil duct; the shutoff valve is mounted on the oil inlet; an injection valve disposed on the oil passage; a temperature pressure sensor disposed on the oil passage and between the shutoff valve and the injection valve; and the injection unit is used for atomizing and injecting the diesel oil supplied by the metering unit.

Description

Heavy-duty vehicle DPM tail gas after-treatment device and heavy-duty vehicle
Technical Field
The utility model relates to a tail gas treatment technical field especially relates to a heavy-duty car DPM (Diesel Particulate Matter, commonly called hydrocarbon injection system) tail gas aftertreatment device and heavy-duty car.
Background
In order to avoid increasingly serious ecological and climatic disasters, reduce greenhouse gas emission, treat environmental pollution and develop low-carbon economy, the method has become a global consensus. Meanwhile, with the increasing stricter emission regulations, the exhaust gas of heavy vehicles must be treated more strictly before being discharged.
The existing heavy vehicle tail gas treatment is carried out through DOC and SCR, wherein DOC is an oxidation catalyst and can catalyze and oxidize HC, CO and NO gas emissions in tail gas to generate NO2And CO2. SCR is selective catalytic reduction, and the reducing agent adopted by the SCR system is urea. Urea NH2CONH2Adding H2O is then decomposed to NH at high temperature3And CO2The working principle is that a reducing agent is sprayed into an exhaust pipe, and nitrogen oxide in the exhaust gas reacts with NH3 to be reduced into nitrogen and water. However, with the coming of the six-country emission regulation, the emission of the tail gas is more strict, and compared with the five-country emission regulation, the requirement on nitrogen oxides is reduced by 42%, the requirement on PM is reduced by 33%, the requirement on hydrocarbons is reduced by 50%, and the traditional aftertreatment system cannot meet the requirements.
In order to meet the requirements of national emission six, a DPF system is required to be added in a general aftertreatment system.
In the process of implementing the present invention, the inventor finds that the prior art has at least the following disadvantages:
the existing diesel particulate filter generally adopts a wall-flow structure to trap carbon particles in exhaust gas, but the carbon particle collection needs a certain degree, the exhaust gas is influenced, and the particles can not be actively regenerated.
Disclosure of Invention
The embodiment of the utility model provides a heavy-duty car DPM tail gas aftertreatment device and heavy-duty car has solved the carbon particle that exists among the correlation technique and has collected will certain degree, influences the exhaust, and the technical problem that the particulate matter can not initiatively be regenerated.
According to the utility model discloses a first aspect provides a heavy-duty car DPM tail gas aftertreatment device, include:
a metering unit, the metering unit comprising:
the oil inlet and the oil outlet are communicated with each other through an oil duct;
the shutoff valve is mounted on the oil inlet;
an injection valve disposed on the oil passage;
a temperature pressure sensor disposed on the oil passage and between the shutoff valve and the injection valve;
and the injection unit is used for atomizing and injecting the diesel oil supplied by the metering unit.
Further, the metering unit includes: and the pressure sensor is arranged at the rear end of the injection valve and used for monitoring whether the nozzle sprays normally or not.
Further, the injection unit includes: and the nozzle is communicated with an oil outlet of the metering unit.
Further, the injection unit further includes: cooling means for cooling said nozzle.
Further, the cooling device includes a cooling water channel.
Further, the cooling water channel surrounds the nozzle.
Further, the injection unit further includes: a second housing, the nozzle and cooling device both being mounted on the second housing.
According to the utility model discloses in the second aspect of the embodiment, provide a heavy-duty car, including the first aspect heavy-duty car DPM tail gas aftertreatment device, the injection unit is with diesel oil atomizing and spray to exhaust duct in.
According to the technical scheme, the beneficial effects of the utility model are as follows:
according to the above technical scheme, the utility model discloses the shut-off valve plays the effect of opening and closing diesel oil, and diesel oil flows to temperature pressure sensor position department through the shut-off valve earlier, and temperature pressure sensor is used for monitoring the temperature and the pressure of diesel oil, and the effect of monitoring pressure is whether normally open and close the shut-off valve, and the monitoring oil temperature is through the difference of oil temperature, the opening time of closed-loop control injection valve. Then the diesel oil flows to the injection valve, the injection valve is also a switch valve, the diesel oil can be intercepted, a proper amount of diesel oil is supplied to the injection unit from the oil outlet, the diesel oil supplied by the metering unit is atomized by the injection unit and is injected into the exhaust pipeline to be combusted, the temperature of the exhaust pipe is increased, particles in the diesel particle filter are combusted, and active regeneration is achieved, so that the technical problems that carbon particles in the related technology need to be collected to a certain degree, exhaust is influenced, and the particles cannot be actively regenerated are solved.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. In the drawings:
fig. 1 is a 3D external view of a DPM exhaust gas post-treatment device for heavy-duty vehicles according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a diesel oil spraying position provided by an embodiment of the present invention;
in the figure, 1, a temperature pressure sensor, 2, a shutoff valve, 3, a first shell, 4, an oil inlet, 5, an injection valve, 6, a pressure sensor, 7, an oil outlet, 8, a nozzle, 9, a second shell, 10, a cooling water channel and 11, a spraying position.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The following detailed description of the present invention will be made with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the DPM exhaust gas after-treatment device for heavy-duty vehicles of the present embodiment includes: a metering unit and an injection unit, the metering unit comprising: the oil-gas separator comprises a first shell 3, wherein the first shell 3 is provided with an oil inlet 4, an oil outlet 7 and an oil duct communicated with the oil inlet 4 and the oil outlet 7; the shutoff valve 2 is mounted on the oil inlet 4; an injection valve 5, the injection valve 5 being arranged on the oil passage; a temperature-pressure sensor 1, the temperature-pressure sensor 1 being arranged on the oil passage and between the shutoff valve 2 and the injection valve 5; the injection unit is used for atomizing and injecting the diesel oil supplied by the metering unit.
According to the technical scheme, the shutoff valve 2 plays a role in opening and closing the diesel oil, the diesel oil firstly flows to the position of the temperature and pressure sensor 1 through the shutoff valve 2, the temperature and pressure sensor 1 is used for monitoring the temperature and the pressure of the diesel oil, the monitoring pressure has the function of confirming whether the shutoff valve is normally opened or closed, the monitoring oil temperature is different through the oil temperature, and the opening time of the injection valve is controlled in a closed loop mode. Then the diesel oil flows to the injection valve 5, the injection valve 5 is also a switch valve, the diesel oil can be intercepted, a proper amount of diesel oil is supplied to the injection unit from the oil outlet 7, the diesel oil supplied by the metering unit is atomized by the injection unit and is injected into the exhaust pipeline to be combusted, the temperature of the exhaust pipe is increased, particles in the diesel particle filter are combusted, active regeneration is achieved, and therefore the technical problems that carbon particles existing in the related technology need to be collected to a certain degree, exhaust is influenced, and the particles cannot be actively regenerated are solved.
In the embodiment of the present invention, the rear end of the injection valve 5 may further be equipped with a pressure sensor 6, which is used to determine whether the injection is working normally.
In an embodiment of the present invention, the injection unit includes: the nozzle is communicated with the oil outlet 7 of the metering unit, and diesel oil can be atomized through the nozzle, so that the diesel oil can be more fully combusted.
In an embodiment of the present invention, the injection unit further includes: the cooling device used for cooling the nozzle can prevent the diesel oil from being overhigh in temperature and influencing the injection amount and the atomization effect.
Specifically, the cooling device comprises a cooling water channel 10, wherein the cooling water channel 10 is provided with a water inlet and a water outlet, and the water inlet and the water outlet can be connected to an engine cooling water port to realize circulation of cooling water.
In the embodiment of the present invention, the cooling water channel 10 surrounds the nozzle 8, so that the contact area of the cooling is increased, and the cooling is more facilitated.
In an embodiment of the present invention, the injection unit further includes: the second shell 9, the nozzle 8 and the cooling device are all installed on the second shell 9, as shown in fig. 2, the nozzle 8 can penetrate and be fixed on the second shell 9, and the diesel oil is sprayed from a bottom spraying position 11 of the second shell 9.
The embodiment of the utility model provides a heavy-duty car is still provided, including foretell heavy-duty car DPM tail gas aftertreatment device, the injection unit is with diesel oil atomizing and spray to exhaust duct in.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a heavy-duty car DPM tail gas aftertreatment device which characterized in that includes:
a metering unit, the metering unit comprising:
the oil inlet and the oil outlet are communicated with each other through an oil duct;
the shutoff valve is mounted on the oil inlet;
an injection valve disposed on the oil passage;
a temperature pressure sensor disposed on the oil passage and between the shutoff valve and the injection valve;
and the injection unit is used for atomizing and injecting the diesel oil supplied by the metering unit.
2. The DPM exhaust gas after-treatment device for heavy-duty vehicles according to claim 1, wherein the metering unit comprises: and the pressure sensor is arranged at the rear end of the injection valve.
3. The DPM exhaust gas after-treatment device for heavy-duty vehicles according to claim 1, wherein the injection unit comprises: and the nozzle is communicated with an oil outlet of the metering unit.
4. The DPM exhaust gas after-treatment device for heavy-duty vehicles according to claim 3, wherein the injection unit further comprises: cooling means for cooling said nozzle.
5. The DPM exhaust gas after-treatment device for heavy-duty vehicles according to claim 4, wherein the cooling device comprises a cooling water channel.
6. The DPM exhaust gas after-treatment device for heavy-duty vehicles according to claim 5, wherein the cooling water channel surrounds the nozzle.
7. The DPM exhaust gas after-treatment device for heavy-duty vehicles according to claim 4, wherein the injection unit further comprises:
a second housing, the nozzle and cooling device both being mounted on the second housing.
8. A heavy vehicle comprising a DPM exhaust gas after-treatment device of a heavy vehicle according to any of claims 1 to 7, said injection unit being adapted to atomize and inject diesel fuel into the exhaust gas duct.
CN202121073358.9U 2021-05-19 2021-05-19 Heavy-duty vehicle DPM tail gas after-treatment device and heavy-duty vehicle Active CN214887305U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121073358.9U CN214887305U (en) 2021-05-19 2021-05-19 Heavy-duty vehicle DPM tail gas after-treatment device and heavy-duty vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121073358.9U CN214887305U (en) 2021-05-19 2021-05-19 Heavy-duty vehicle DPM tail gas after-treatment device and heavy-duty vehicle

Publications (1)

Publication Number Publication Date
CN214887305U true CN214887305U (en) 2021-11-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121073358.9U Active CN214887305U (en) 2021-05-19 2021-05-19 Heavy-duty vehicle DPM tail gas after-treatment device and heavy-duty vehicle

Country Status (1)

Country Link
CN (1) CN214887305U (en)

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