CN214011197U

CN214011197U - Detachable dual-purpose PEMS test device

Info

Publication number: CN214011197U
Application number: CN202023197629.XU
Authority: CN
Inventors: 董明; 刘婷洁; 王宁
Original assignee: Beijing Foton Cummins Engine Co Ltd
Current assignee: Beijing Foton Cummins Engine Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-20
Anticipated expiration: 2030-12-25

Abstract

The utility model provides a detachable dual-purpose PEMS test device, including tail gas collection module and PEMS detection module, tail gas collection module is provided with the tail gas collection module connecting hole, PEMS detection module is provided with PEMS detection module connecting hole, the tail gas collection module connecting hole with the connection can be dismantled to PEMS detection module connecting hole, the tail gas that tail gas collection module gathered passes through the pipeline and transmits PEMS detection module, the exhaust emission flow that tail gas collection module detected passes through signal of telecommunication and transmits PEMS detection module. The utility model discloses a detachable dual-purpose PEMS test device has solved the problem that prior art exists repeated dismouting, inefficiency, influence equipment durability and influence the result, and firm reliably rationally arranges the fixed equipment with experimental required component part of PEMS, guarantees test equipment's safe durable, and PEMS is experimental to convenient and fast ground completion, promotes experimental efficiency and experimental stability.

Description

Detachable dual-purpose PEMS test device

Technical Field

The utility model relates to a vehicle exhaust tests the field, especially relates to a dual-purpose PEMS test device of detachable.

Background

The tail gas discharged by the engine contains a large amount of harmful substances to human bodies, and the pollution of exhaust pollutants to the atmosphere is polluted, so that the state sets a new standard GB17691-2018 for testing the emission level of the whole diesel vehicle, namely emission limit and measurement method of pollutants for heavy diesel vehicles (sixth stage of China), and the standard sets the emission limit and test method (PEMS) of the exhaust pollutants at the present stage. The detection method can detect vehicles with unqualified exhaust emission indexes, and can effectively improve the quality of atmospheric environment by rectifying and controlling the unqualified vehicles.

The PEMS test is used for testing gaseous pollutants and particulate matters in vehicle exhaust, and can test the emission characteristics of vehicles in real time. The concentration of pollutant is gathered through the probe that links to each other with vehicle exhaust pipeline, including carbon monoxide (CO), Hydrocarbon (HC), nitrogen oxide (NOx), particulate matter (PN) etc. through with vehicle OBD interface, obtain the relevant technical parameter of engine and vehicle simultaneously, like engine speed, intake pipe pressure, intake pipe temperature and vehicle speed etc.. For a vehicle without an embedded OBD interface, parameters such as the rotating speed of the engine, the pressure of an air inlet pipe, the temperature of the air inlet pipe and the like can be obtained at the corresponding position of the engine by using a sensor, and the exhaust emission of the vehicle can be calculated through the vehicle parameters.

The PEMS test comprises the detection of exhaust emission characteristics during vehicle running and the detection of the exhaust emission characteristics in a static state in a laboratory. In the prior art, the tail gas collecting device is fixed at the tail part of a vehicle and connected to a tail gas pipeline of the vehicle. In the developments PEMS is experimental, inside PEMS check out test set placed the vehicle, connect tail gas collection system and PEMS check out test set by the pipeline again, in the static PEMS is experimental, PEMS check out test set places the vehicle by the vehicle, connect tail gas collection system and PEMS check out test set by the pipeline again, because test at every turn, all need reinstallate the equipment subassembly, it is great or fixed insecure to connect tail gas transmission pipeline and electronic circuit bending, will influence the test result and even cause the equipment to damage.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a detachable dual-purpose PEMS test device dismantles and opens and is arranged in the vehicle to travel the experiment of developments PEMS, and the equipment is used for the experimental required component part of firmly arranging rationally of PEMS reliably of laboratory static PEMS together and fixes the equipment.

The utility model discloses a detachable dual-purpose PEMS test device, including tail gas collection module and PEMS detection module, tail gas collection module is provided with the tail gas collection module connecting hole, PEMS detection module is provided with PEMS detection module connecting hole, the tail gas collection module connecting hole with the connection can be dismantled to PEMS detection module connecting hole, the tail gas that tail gas collection module gathered passes through the pipeline and transmits to PEMS detection module, the exhaust emission flow that tail gas collection module detected passes through signal of telecommunication and transmits to PEMS detection module.

In one implementation method, the exhaust gas collection module comprises a flowmeter and a vehicle exhaust gas transmission pipe, one end of the vehicle exhaust gas transmission pipe is connected with the flowmeter, the other end of the vehicle exhaust gas transmission pipe is connected with the tail end of an exhaust pipe of a vehicle, the flowmeter comprises a gaseous pollutant collection port, a particulate matter collection port and a flowmeter tail end exhaust port, and the PEMS detection module comprises a PEMS detection device, a gaseous pollutant detection transmission pipe, a particulate matter detection transmission pipe and a standard gas bottle group; wherein the content of the first and second substances,

the gas pollutant collecting port and the particulate matter collecting port are respectively connected with a gas pollutant detection transmission pipe and a particulate matter detection transmission pipe of the PEMS detection module so as to transmit the tail gas to be detected collected by the flowmeter to the PEMS detection equipment.

In one implementation method, the tail gas collection module further comprises a flowmeter fixing frame for fixing the flowmeter, and the tail gas collection module connecting hole is arranged on the flowmeter fixing frame.

In one implementation, the flowmeter is fixed on the flowmeter fixing frame through U-shaped bolts.

In one implementation, the PEMS detection module further includes a moving carriage for facilitating movement of the PEMS detection module, and the PEMS detection module is fixed to the moving carriage.

In one implementation method, the moving frame comprises wheels, a moving frame bottom plate and a frame fixedly connected with the moving frame bottom plate, the PEMS detection device is fixed on the moving frame bottom plate, and the PEMS detection module connecting hole is formed in the frame of the moving frame.

In one implementation method, the moving vehicle frame is further provided with a plurality of hooks, and the hooks are used for fixing the particulate matter detection and transmission pipe, the gaseous pollutant detection and transmission pipe and other tools required in the suspension test process.

In one embodiment, the mobile cart further comprises a handle mounted above the frame for pushing the detachable dual-purpose PEMS test device.

In one embodiment, the PEMS detection device is fixed to the moving carriage base plate by a screw connection or a press-fit connection.

In one implementation, the exhaust collection module connection hole and the PEMS detection module connection hole are detachably connected by a screw.

Compared with the prior art, the utility model discloses a detachable dual-purpose PEMS test device has following advantage:

the utility model discloses detachable dual-purpose PEMS test device is firmly the fixed equipment of rationally arranging the experimental required component part of PEMS reliably, and flowmeter and PEMS check out test set do not need repeated dismouting, and tail gas transmission pipeline and electronic circuit can both rationally be arranged fixedly, have guaranteed test equipment's safe durable, can accomplish PEMS test by convenient and fast ground, have promoted experimental efficiency and experimental stability.

The technical features mentioned above can be combined in various technically feasible ways to produce new embodiments, as long as the objects of the invention are achieved.

Drawings

The invention will be described in more detail hereinafter on the basis of non-limiting examples only and with reference to the accompanying drawings. Wherein:

FIG. 1 is a schematic diagram showing the structural composition of a detachable dual-purpose PEMS test device according to the present invention;

FIG. 2 shows a schematic view of the exhaust gas collection module of FIG. 1;

FIG. 3 shows a schematic diagram of the PEMS detection module of FIG. 1.

In the drawings, like components are denoted by like reference numerals. The figures are not drawn to scale.

Wherein the reference numbers indicate:

1. a tail gas collection module; 11. a flow meter; 111. a gaseous pollutant collection port; 112. a particulate matter collection port; 113. a flow meter end exhaust port; 12. a vehicle exhaust gas transmission pipe; 13. a flowmeter fixing frame; 131. a flowmeter fixing frame bottom plate; 132. a tail gas collection module connection hole; 14. a U-shaped bolt; 2. a PEMS detection module; 21. PEMS detection equipment; 22. a gaseous pollutant detection and transmission pipe; 23. a particulate matter detection and transmission pipe; 24. a standard gas cylinder group; 25. moving the frame; 251. a wheel; 252. moving the frame bottom plate; 253. a frame; 2531. a PEMS detection module connection hole; 254. hooking; 255. a handrail.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples. It should be noted that, as long as no conflict is formed, the embodiments and the features in the embodiments of the present invention may be combined with each other, and the technical solutions formed are all within the scope of the present invention.

The parts not mentioned in the utility model can be realized by adopting or using the prior art for reference.

The utility model provides a detachable dual-purpose PEMS test device can be used for the vehicle to travel in the developments PEMS experiment when dismantling, can be used for the static PEMS experiment in laboratory when assembling together.

As shown in fig. 1, the utility model discloses a detachable dual-purpose PEMS test device, including tail gas collection module 1 and PEMS detection module 2, tail gas collection module 1 is provided with tail gas collection module connecting hole 132, PEMS detection module 2 is provided with PEMS detection module connecting hole 2531, tail gas collection module connecting hole 132 can be dismantled with PEMS detection module connecting hole 2351 and be connected, the tail gas of tail gas collection module 1 collection passes through the pipeline and transmits PEMS detection module 2, the exhaust emission flow that tail gas collection module 1 detected passes through signal of telecommunication and transmits PEMS detection module 2.

The utility model discloses firmly arrange fixed equipment with PEMS experimental required component part rationally reliably, flowmeter and PEMS check out test set do not need repeated dismouting, and tail gas transmission line and electronic circuit can both rationally be arranged fixedly, have guaranteed test set's safe durable, can accomplish PEMS experiment by convenient and fast ground, have promoted experimental efficiency and experimental stability.

As shown in fig. 2 and fig. 3, in a specific embodiment, the exhaust gas collection module 1 includes a flow meter 11 and a vehicle exhaust gas transmission pipe 12, one end of the vehicle exhaust gas transmission pipe 12 is connected to the flow meter 11, and the other end is connected to an end of an exhaust pipe of a vehicle, the flow meter 11 includes a gaseous pollutant collection port 111, a particulate matter collection port 112 and a flow meter end exhaust port 113, the PEMS detection module 2 includes a PEMS detection device 21, a gaseous pollutant detection transmission pipe 22, a particulate matter detection transmission pipe 23 and a standard gas bottle group 24; wherein the content of the first and second substances,

the gaseous pollutant collecting port 111 and the particulate matter collecting port 112 are respectively connected with the gaseous pollutant detection transmission pipe 22 and the particulate matter detection transmission pipe 23 of the PEMS detection module, so as to transmit the exhaust gas to be detected collected by the flowmeter 11 to the PEMS detection apparatus 2.

Several standard gases in standard gas cylinders are used to calibrate PEMS detection equipment to calculate emission characteristics.

The utility model discloses a detachable dual-purpose PEMS test device application method as follows:

during the developments PEMS is experimental, tail gas collection module 1 and PEMS detection module 2 are used to the dismantlement state, install tail gas collection module 1 to the vehicle afterbody, place PEMS detection module 2 inside the vehicle, gaseous pollutant detects transmission pipe 22 and particulate matter and detects transmission pipe 23 and be connected to gaseous pollutant collection mouth 111 and particulate matter collection mouth 112 of the tail gas collection module 1 of installing outside the vehicle respectively, will gather wait to detect tail gas transmission to placing PEMS detection module 2 inside the vehicle.

During static PEMS test, the tail gas collecting module and the PEMS detecting module need to be assembled and connected together for use. Specifically, with tail gas collection module connecting hole 132 and PEMS detection module connecting hole 2531 with bolted connection fastening, gaseous pollutant detects transmission pipe 22 and particulate matter and detects transmission pipe 23 and connect flowmeter 11's gaseous pollutant collection mouth 111 and particulate matter collection mouth 112 respectively and connect, arrange PEMS test device in vehicle afterbody next door after the equipment is accomplished, connect vehicle and this device, tail gas is gathered to the terminal tail gas of the blast pipe that tail gas collection module 1's vehicle tail gas transmission pipe 12 is connected the vehicle and is detected.

In a specific embodiment, the exhaust gas collection module 1 further comprises a flow meter holder 13 for holding the flow meter 11, and the exhaust gas collection module connection hole 132 is preferably disposed on the flow meter holder 13. More preferably, the flow meter 11 is fixed to the flow meter holder 13 by U-bolts.

In a preferred embodiment, PEMS detection module 2 further includes a mobile carriage 25 that facilitates movement of PEMS detection module 2, and PEMS detection module 2 is secured to mobile carriage 25.

As shown in fig. 3, the moving carriage 25 includes wheels 251, a moving carriage bottom plate 252, and a frame 253 fixedly connected to the moving carriage bottom plate 252, the PEMS detection apparatus 21 is fixed to the moving carriage bottom plate 252, and the PEMS detection module connection hole 2531 is disposed on the frame 2523 of the moving carriage 25.

In an alternative embodiment, the moving carriage 25 is further provided with a plurality of hooks 254, and the plurality of hooks 254 are preferably provided on the frame 253 for fixing the particulate matter detection and

transmission pipes

23 and 22 and other tools required in the suspension test process, for example, a connection line of a PEMS detection module for connecting an OBD port of a vehicle and the PEMS detection module may be fixed on the hooks 254. The OBD port is used for acquiring relevant parameters of the vehicle and participating in the calculation of emission characteristics.

In an alternative embodiment, the moving carriage 25 may further include a handle 255, and the handle 255 is mounted above the frame 253 for pushing the detachable dual-purpose PEMS test device.

In an alternative embodiment, the PEMS detection device 21 is secured to the moving frame base plate 252 by a threaded or press-fit connection.

Preferably, when the dynamic PEMS test is implemented, the exhaust port at the tail end of the flowmeter directly exhausts the residual tail gas into the air; when the static PEMS test is specifically implemented, the exhaust port at the tail end of the flowmeter is connected to a tail gas exhaust pipe of a laboratory, so that the tail gas is prevented from being exhausted indoors.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. It will be understood by those skilled in the art that while the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. The utility model provides a detachable dual-purpose PEMS test device, includes tail gas collection module and PEMS detection module, its characterized in that, tail gas collection module is provided with the tail gas collection module connecting hole, PEMS detection module is provided with PEMS detection module connecting hole, the tail gas collection module connecting hole with the connection can be dismantled to PEMS detection module connecting hole, the tail gas of tail gas collection module collection passes through the pipeline and transmits to PEMS detection module, the exhaust emission flow that tail gas collection module detected passes through electric signal transmission to PEMS detection module.

2. The detachable dual-purpose PEMS test device according to claim 1, wherein the exhaust gas collection module comprises a flowmeter and a vehicle exhaust transmission pipe, one end of the vehicle exhaust transmission pipe is connected with the flowmeter, the other end of the vehicle exhaust transmission pipe is connected with the tail end of an exhaust pipe of a vehicle, the flowmeter comprises a gaseous pollutant collection port, a particulate matter collection port and a flowmeter tail end exhaust port, and the PEMS detection module comprises PEMS detection equipment, a gaseous pollutant detection transmission pipe, a particulate matter detection transmission pipe and a standard gas bottle group; wherein the content of the first and second substances,

3. The detachable dual-purpose PEMS test device according to claim 2, wherein said exhaust gas collection module further comprises a flowmeter holder for fixing said flowmeter, said exhaust gas collection module connection hole being provided in said flowmeter holder.

4. The removable dual-purpose PEMS test device of claim 3, wherein said flow meter is secured to said flow meter holder by U-bolts.

5. The removable dual-purpose PEMS test device of claim 2, wherein said PEMS detection module further comprises a movable carriage for facilitating movement of said PEMS detection module, said PEMS detection module being secured to said movable carriage.

6. The detachable dual-purpose PEMS test device according to claim 5, wherein said moving carriage comprises wheels, a moving carriage base plate and a frame fixedly connected to said moving carriage base plate, said PEMS detection device is fixed to said moving carriage base plate, and said PEMS detection module connection holes are formed in said frame of said moving carriage.

7. The removable dual-purpose PEMS test device according to claim 5 or 6, wherein said moving carriage is further provided with a plurality of hooks for fixing said particulate matter detecting and transmitting tube and said gaseous pollutant detecting and transmitting tube and other tools required in a suspension test process.

8. The removable dual-purpose PEMS test device according to claim 7, wherein said traveling carriage further comprises an armrest mounted above said frame for pushing said removable dual-purpose PEMS test device.

9. The removable dual-purpose PEMS test device according to claim 6, wherein said PEMS detection means is secured to said moving carriage base by a threaded or press-fit connection.

10. The detachable dual-purpose PEMS test device according to claim 1, wherein said exhaust collection module attachment hole is removably attached to said PEMS detection module attachment hole by threads.