CN217270415U

CN217270415U - Detection device of particle catcher and vehicle

Info

Publication number: CN217270415U
Application number: CN202121945371.9U
Authority: CN
Inventors: 付贵昕; 崔赫; 伦延庆
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-08-23
Anticipated expiration: 2031-08-18

Abstract

The utility model belongs to the technical field of the engine detects, concretely relates to particle catcher's detection device and vehicle. The utility model provides a detection device of particle trap includes particle trap and conductivity acquisition element, the first end and the second end of conductivity acquisition element peg graft respectively in particle trap's inside and interval set up, the third end of conductivity acquisition element is connected with control center. Through the detection device who uses the particle trap among this technical scheme, carry out the calibration operation to the conductivity of particle trap and the particulate matter of particle trap entrapment before detecting the particle trap, can acquire the conductivity of particle trap according to the conductivity acquisition component when detecting, simultaneously according to foretell calibration result, can reach the cumulant of the particulate matter in the particle trap, the utility model discloses a detection device is more simple and convenient, calculates according to the conductivity simultaneously, has promoted certain accuracy.

Description

Detection device of particle catcher and vehicle

Technical Field

The utility model belongs to the technical field of the engine detects, concretely relates to particulate matter trap's detection device and vehicle.

Background

Under the working state of the engine, because the fuel and the lubricating oil are incompletely combusted in the cylinder, a plurality of Particulate Matters (PM) can be formed, the particulate matters mainly comprise residual soot, part of soluble particles and the like which are incompletely combusted by the fuel and the lubricating oil, and the particulate matters can cause adverse effects on the environment and the human health. With the implementation of national six regulations, the emission control for diesel vehicle particles is becoming stricter. DPF (diesel particulate trap) is increasingly gaining importance as the most effective solution for reducing PM and PN. The DPF can effectively trap PM in diesel engine exhaust, but the quantity of the trapped PM is accumulated continuously, so that the exhaust back pressure of an engine is increased, fuel oil needs to be injected from the rear of the diesel engine after a certain quantity of the PM is reached, and the fuel oil is oxidized by the DOC to release a large amount of heat so as to oxidize and burn the PM in the DPF.

The technical point at present is how to accurately calculate the amount of PM trapped in the DPF. If the PM amount in the DPF is too large during regeneration, a large amount of heat can be released during regeneration, so that the temperature in the DPF is increased violently and even reaches thousands of high temperature, and the DPF is exposed to risks such as burning or ring cracking; if the PM amount in the DPF is small during regeneration, the waste of post-injection fuel can be caused. Accurate metering of the trapped PM within the DPF is therefore required.

SUMMERY OF THE UTILITY MODEL

The utility model aims at least solving the problem that the prior art can not accurately acquire the particles trapped by the particle catcher. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a particulate matter trap's detection device, include:

a particle trap;

and the first end and the second end of the conductivity acquisition element are respectively inserted into the particle trap and are arranged at intervals, and the third end of the conductivity acquisition element is connected with the control center.

Through the detection device who uses the particle trap among this technical scheme, carry out the calibration operation to the conductivity of particle trap and the particulate matter of particle trap entrapment before detecting the particle trap, can acquire the conductivity of particle trap according to the conductivity acquisition component when detecting, simultaneously according to foretell calibration result, can reach the cumulant of the particulate matter in the particle trap, the utility model discloses a detection device is more simple and convenient, calculates according to the conductivity simultaneously, has promoted certain accuracy.

In addition, according to the utility model discloses a detection device of particle catcher still can have following additional technical characterstic:

in some embodiments of the present invention, the first end is provided with a first probe, and the first probe is inserted into the particle catcher.

In some embodiments of the present invention, the second end is provided with a second probe, and the second probe is inserted into the particle catcher.

In some embodiments of the present invention, the detecting device of the particle catcher further comprises a temperature sensor, wherein the temperature sensor is connected with the control center and is used for detecting the temperature in the particle catcher.

In some embodiments of the invention, the temperature sensor is located between the first end and the second end.

In some embodiments of the invention, the temperature sensor, the first end and the second end are all located in the same inlet channel inside the particle trap.

In some embodiments of the present invention, the conductivity acquisition element is a resistance meter.

In some embodiments of the present invention, the inlet channel in the particle trap has a cake layer structure, and the first end and the second end are all inserted into the cake layer structure.

The second aspect of the present invention also provides a vehicle having the detecting device of the particle catcher as described in any one of the above aspects.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows a schematic structural view of a detection device of a particle trap according to an embodiment of the present invention.

In the drawings, the reference numerals denote the following:

10: a particle trap;

20: a conductivity acquisition element;

30: a control center;

40: a temperature sensor.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 schematically shows a schematic structural view of a detection device of a particle trap according to an embodiment of the present invention. As shown in FIG. 1, the present invention provides a detecting device for a particle catcher and a vehicle. The utility model provides a detection device of particle trap includes particle trap 10 and conductivity acquisition element 20, and the first end and the second end of conductivity acquisition element 20 peg graft respectively in particle trap 10's inside and interval setting, and the third end of conductivity acquisition element 20 is connected with control center 30.

Through the detection device who uses the particle trap among this technical scheme, carry out the calibration operation to the conductivity of particle trap 10 and the particulate matter of particle trap 10 entrapment before detecting particle trap 10, can acquire the conductivity of particle trap 10 according to conductivity acquisition element 20 when detecting, simultaneously according to foretell demarcation result, can reach the cumulant of the particulate matter in the particle trap 10, the utility model discloses a detection device is more simple and convenient, calculates according to the conductivity simultaneously, has promoted certain accuracy.

In some embodiments of the present invention, the first end is provided with a first probe, and the first probe is inserted into the particle catcher 10. Because the particulate matter is located the inside of particle trap 10, consequently use first probe can insert the shell of particle trap 10 and be connected in its inside particulate matter to carry out the effective measurement to the particulate matter, in addition, first probe is the electric conductor, can the transmission current, and the conductivity of the particulate matter is measured to conductivity acquisition element 20 of being convenient for, has promoted the reliability.

In some embodiments of the present invention, a second probe is disposed on the second end, and the second probe is inserted into the particle catcher 10. Because the particulate matter is located inside the particle catcher 10, the second probe can be inserted into the housing of the particle catcher 10 and connected to the particulate matter inside the housing, so that the particulate matter can be effectively measured.

Specifically, in the present embodiment, a conductivity sampling element 20 is added outside the particle trap 10, two probes at the first end and the second end of the sampling element protrude into the particle trap 10, the output voltage is controlled to be constant during the measurement, and the resistance between the two probes is measured at a certain frequency.

In some embodiments of the present invention, the detection device of the particle catcher 10 further comprises a temperature sensor 40, wherein the temperature sensor 40 is connected to the control center 30 and is used for detecting the temperature in the particle catcher 10. The temperature sensor 40 can measure the temperature of the cake layer formed by the particles on the inlet channel in the particle trap 10, and the MAP table among the three (i.e., the temperature, the conductivity and the particle content) can be more accurately calibrated by matching with the measurement of the conductivity of the cake layer formed by the particles by the conductivity acquisition element 20, so that the content of the particles can be conveniently obtained, and the convenience and the reliability are improved.

In some embodiments of the present invention, the temperature sensor 40 is located between the first end and the second end. The conductivity of the material is related to the temperature, and a temperature sensor 40 needs to be embedded between two probes of the acquisition element, so that the resistance of a cake layer formed by trapped particles is detected, and the temperature of the cake layer is detected. Temperature sensor 40 can be made more accurate the temperature of measuring the particulate matter between first end and the second end like this, can gather the particulate matter that component 20 gathered with the conductivity corresponding to realize the temperature and the conductivity phase-match of particulate matter, promoted the reliability of testing process to a certain extent.

In some embodiments of the present invention, the temperature sensor 40, the first end, and the second end are all located in the same inlet channel inside the particle trap 10. Because the particle trap is internally provided with a plurality of flow channels, the first end, the second end and the position detected by the temperature sensor 40 in the embodiment are in the same channel, so that the data to be measured by the temperature sensor 40 and the conductivity acquisition element 20 can correspond to each other, and the accuracy of the measurement result is realized.

In some embodiments of the present invention, conductivity-sensing element 20 is a resistance meter.

In some embodiments of the present invention, the inlet channel in the particulate trap 10 has a cake layer structure, and the first end and the second end are both plugged into the cake layer structure. The cake layer structure is a structure formed by particles and is attached to the inner wall of the inlet channel, the material of the carrier of the particle catcher is extremely low in conductivity, and the cake layer has higher conductivity, so that at a certain temperature, the more the particles caught by the particle catcher 10 are, the thicker the formed cake layer is, and the lower the resistance measured by the collecting element is.

Further, the utility model discloses an arrange the flow and do: according to the carrier type selection and the working condition characteristics, two probes (extending into the same channel in the particle catcher 10) of the conductivity acquisition element 20 are arranged in the particle catcher 10, and a temperature sensor 40 is arranged between the two probes and used for detecting the temperature of a filter cake layer formed by particles in the particle catcher 10. Conductivity acquisition element 20 and temperature sensor 40 are connected to control center 30 for data communication transmission. The control center 30 outputs an instruction according to a strategy requirement and a certain frequency, the conductivity acquisition element 20 outputs a voltage after receiving the instruction, the resistance between the two probes is measured, the resistance measurement data and the temperature data measured by the temperature sensor 40 are transmitted back to the control center 30, the control center 30 reads the calibrated particulate matter content MAP and outputs the particulate matter content trapped in the current particulate matter trap.

Specifically, the Control center 30 in the present embodiment is an ecu (electronic Control unit).

The utility model also provides a vehicle, including foretell particle trap's detection device.

Through using the vehicle among this technical scheme, carry out the calibration operation to the conductivity of particulate trap 10 and the particulate matter of particulate trap 10 entrapment before detecting particulate trap 10, can acquire the conductivity of particulate trap 10 according to conductivity acquisition element 20 when detecting, simultaneously according to foretell demarcation result, can reach the cumulant of the particulate matter in the particulate trap 10, the utility model discloses a detection device is more simple and convenient, calculates according to the conductivity simultaneously, has promoted certain accuracy.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A detection device for a particle trap, comprising:

a particle trap;

and a first end and a second end of the conductivity acquisition element are respectively inserted into the particle trap and are arranged at intervals, and a third end of the conductivity acquisition element is connected with the control center.

2. The apparatus of claim 1, wherein the first end has a first probe, and the first probe is inserted into the particle trap.

3. The apparatus of claim 1, wherein the second end is provided with a second probe, and the second probe is inserted into the particle trap.

4. The detecting device of the particle trap according to claim 1, further comprising a temperature sensor connected to the control center for detecting a temperature in the particle trap.

5. The detecting device of the particle trap as set forth in claim 4 wherein said temperature sensor is located between said first end and said second end.

6. The detecting device for the particle trap according to claim 4, wherein the temperature sensor, the first end and the second end are all located in the same inlet channel inside the particle trap.

7. The apparatus for detecting a particle trap of claim 1, wherein the conductivity sensing element is a resistance meter.

8. The detecting device for the particle trap according to claim 1, wherein the inlet channel in the particle trap has a cake layer structure, and the first end and the second end are inserted into the cake layer structure.

9. A vehicle, characterized in that the vehicle is provided with a detection device of a particle trap according to any one of claims 1-8.