CN111735745A - Portable non-road mobile machinery particulate matter emission rapid detection device and method - Google Patents
Portable non-road mobile machinery particulate matter emission rapid detection device and method Download PDFInfo
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- CN111735745A CN111735745A CN202010463826.7A CN202010463826A CN111735745A CN 111735745 A CN111735745 A CN 111735745A CN 202010463826 A CN202010463826 A CN 202010463826A CN 111735745 A CN111735745 A CN 111735745A
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- 239000013618 particulate matter Substances 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000779 smoke Substances 0.000 claims abstract description 36
- 238000012360 testing method Methods 0.000 claims description 21
- 239000000446 fuel Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 3
- 239000003570 air Substances 0.000 description 7
- BUCXEFZXWKUCCY-UHFFFAOYSA-N 4-methyl-3-(2-phenylethyl)-1,2,4-oxadiazol-5-one Chemical compound O1C(=O)N(C)C(CCC=2C=CC=CC=2)=N1 BUCXEFZXWKUCCY-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002229 photoelectron microspectroscopy Methods 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
Abstract
The invention provides a portable non-road mobile machinery particulate matter emission rapid detection device, which comprises a light-tight smoke meter, a vehicle-mounted terminal module, a control unit and an intelligent terminal, wherein the light-tight smoke meter is arranged on the vehicle-mounted terminal module; the light-tight smoke meter is connected with the control unit and used for acquiring a light-tight smoke value in the tail gas and transmitting data to the control unit; the vehicle-mounted terminal module is connected with the control unit and used for acquiring the power of the engine, the oil consumption and the air intake mass flow and transmitting data to the control unit; the control unit transmits the acquired data to the intelligent terminal; and the intelligent terminal also feeds back a control signal to the light-tight smoke meter to be started. The invention provides a portable device and a method for rapidly detecting particulate matter emission of a non-road vehicle, which can be used for rapidly calculating the specific emission of the particulate matter through an opaque smoke value, engine power, oil consumption and air intake mass flow independently of the non-road vehicle.
Description
Technical Field
The invention belongs to the technical field of non-road vehicle testing, and particularly relates to a portable non-road mobile machine particulate matter emission rapid detection device and method.
Background
The non-road mobile machinery has poor integral emission, belongs to low-altitude direct discharge and has great influence on ambient air, but the non-road mobile machinery plays an important role in city construction, so the high-emission non-road mobile machinery cannot be eliminated in a short time, and a feasible new way needs to be researched. The emission of the non-road mobile machinery is controlled, and the national and local successive measures are taken, so that the emission pollution of the non-road mobile machinery is reduced.
The engine base data currently available using CAN lines mainly include the following fields:
mass air intake flow (MAF), kg/h;
engine maximum reference torque, Nm;
engine Net output Torque (as a percentage of the engine's maximum reference Torque,%)
Engine friction torque (as a percentage of engine maximum reference torque,%);
engine speed, rpm;
engine fuel flow, L/h;
engine coolant temperature in deg.C.
Particulate matter emission is an important monitoring content of the tail gas emission of non-road mobile machinery, and the emission test of actual operation cycle is carried out by vehicle-mounted emission equipment PEMS regulated by the emission regulations of non-road state four. However, the current devices for measuring particulate matters by PEMS are large in size, complex to install, complex to analyze and process signals, complex to establish a model, and in a bench experiment, the power of the devices must be obtained by a dynamometer, and the exhaust flow must be obtained by an exhaust flow sensor, so that the methods are not suitable for rapidly obtaining data on non-road vehicles in actual working states. Therefore, the method of the patent provides the additional installation of the light-tight smoke meter and the vehicle-mounted diagnosis system to rapidly obtain the particulate matter emission of the non-road vehicle.
No simple, practical and low-cost specific discharge device for measuring particles of non-road vehicles in actual working conditions is found in the market at present. The PEMS testing equipment with complete functions has high cost and high price, needs an actuating mechanism and a programming control program, and is difficult to use in an actual working state. In order to meet the requirements of low cost and easiness in detection of specific emission of non-road vehicle particulate matter in actual work, a portable device and a method for rapidly detecting particulate matter emission of the non-road vehicle are set up, and the urgent requirement for measuring the particulate matter emission of the non-road vehicle in an actual working state is met.
Disclosure of Invention
In view of this, the present invention provides a portable non-road mobile machinery particulate matter emission rapid detection device, so as to solve the problems of low actual road (or operation) emission detection test efficiency, complex installation, high cost, and the like in the background art, and significantly improve the low cost and the usability of the non-road vehicle particulate matter compared with the emission detection.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a portable non-road mobile machinery particulate matter emission rapid detection device comprises a light-tight smoke meter, a vehicle-mounted terminal module, a control unit and an intelligent terminal;
the light-tight smoke meter is connected with the control unit and used for acquiring a light-tight smoke value in the tail gas and transmitting data to the control unit;
the vehicle-mounted terminal module is connected with the control unit and used for acquiring the power of the engine, the oil consumption and the air intake mass flow and transmitting data to the control unit;
the control unit transmits the acquired data to the intelligent terminal;
and the intelligent terminal also feeds back a control signal to the light-tight smoke meter to be started.
Furthermore, data interaction is carried out between the vehicle-mounted terminal module and the whole vehicle electric control system through a CAN bus.
Furthermore, the intelligent terminal comprises a mobile phone end APP.
Furthermore, the mobile phone end APP is provided with a login interface, a test configuration interface, a test main interface, a result query interface and an upgrade updating interface, a history file can be opened, a detailed professional report can be obtained, and curve results of smoke intensity, particles and power can be displayed in real time on the test main interface.
The invention also provides a detection method of the portable non-road mobile machinery particulate matter emission rapid detection device, which comprises the following steps:
(1) obtaining oil consumption Q through vehicle-mounted terminal modulefCalculating the instantaneous fuel mass flow M of the vehiclef；
(2) Acquiring air intake mass flow G according to vehicle-mounted terminal moduleMAFAnd the mass flow M of the engine fuel calculated in the step (1)fCalculating to obtain the instantaneous exhaust volume flow Me；
(3) The control unit receives a smoke value signal K of the light-tight smoke meter to calculate the mass concentration C of the particulate mattersm；
(4) According to the instantaneous exhaust volume flow M calculated in the steps (2) and (3)eAnd the mass concentration C of the particulate mattermCalculating the mass flow G of the instant particlesPM；
(5) The second-by-second power P of the engine acquired by the vehicle-mounted terminal module and the mass flow G of the instantaneous particulate matter calculated in the step (4)PMAnd calculating the specific emission of the particulate matters.
Further, in the step (1), the calculation formula is
Mf＝Qf*ρ f，ρ fIs the fuel density.
Further, in the step (2), the calculation formula is
Me＝(GMAF+Mf)/ρ e，ρ eFor exhaust density, unit kg/m3。
Further, in the step (3), Cm＝9.58+266.99K-215.63K2+76.11K3。
Further, in the step (4), the calculation formula is
GPM＝Cm*Me。
Further, in the step (5), the calculation formula is
Compared with the prior art, the portable device and the method for rapidly detecting the particulate matter emission of the non-road mobile machinery have the following advantages:
(1) the invention uses the lightproof smoke value to calculate the particulate matter emission, the lightproof smoke meter has mature technology, simple and convenient installation, lower cost and good instantaneity, and obviously improves the lower cost and the usability of the non-road mobile machinery particulate matter than the emission detection;
(2) the APP of the invention comprises a login interface, a test configuration interface, a test main interface, result query and upgrade update, and can open a history file and obtain a detailed professional report;
(3) the smoke intensity, the mass flow and the power curve results of the particulate matters can be displayed in real time on a test main interface, and meanwhile, the specific emission of the particulate matters can be counted;
(4) the mobile phone terminal APP can manually send an instruction to remotely control the light-tight smoke meter to start measurement, and simultaneously record data and count time of the light-tight smoke meter and the control unit so as to ensure time alignment of all data and finish a recording test manually or automatically. And after the test is finished, automatically jumping out of the result of the test result.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a vehicle, a vehicle-mounted terminal module, a control unit and a mobile phone terminal APP device of the invention;
FIG. 2 is a block diagram of a mobile phone terminal APP configuration of the present invention;
FIG. 3 is a computational flow diagram of the method of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the invention provides a portable device and a method for rapidly detecting particulate matter emission of a non-road vehicle, which are realized by a light-tight smoke meter, a vehicle-mounted terminal module, a control unit and a mobile phone terminal APP.
The light-tight smoke meter is used for acquiring a light-tight smoke value in the tail gas; and the vehicle-mounted terminal system is used for acquiring the power of the engine, the oil consumption and the air intake mass flow. Through wireless network transmission to cell-phone end APP back automatic calculation, the numerical value that particulate matter ratio in the tail gas discharged can be exported finally to the display result.
Specifically, data interaction is carried out between the whole vehicle electric control system and the vehicle-mounted terminal module through a CAN bus, and the control unit receives light-tight smoke meter signals and stores engine power, air intake mass flow and oil consumption data read by the vehicle-mounted terminal module. The data acquisition frequency is 1HZ, and the data acquisition frequency is transmitted to the APP end of the mobile phone through a wireless network, and is calculated inside the APP. Can manual send the opaque smoke meter of instruction remote control to begin to measure on the cell-phone terminal APP to carry out opaque smoke meter and the data record and the time statistics of the control unit simultaneously, with the time alignment of guaranteeing each data, manual or automatic end record test, after the experiment, jump out the result of experimental result automatically.
As shown in fig. 2, the APP has a login interface, a test configuration interface, a test main interface, and a result query and update function, and can open a history file and obtain a detailed professional report. And in a test main interface, curve results of smoke intensity, particles and power can be displayed in real time.
The calculation process is shown in fig. 3:
10, the oil consumption Q is obtained through the vehicle-mounted terminal modulefOf, singlyL/h, the vehicle instantaneous fuel mass flow M calculated by the following formulafThe unit of the weight of the catalyst is kg/h,ρ fthe density of the fuel is 0.835kg/L, for example, the density of 0# diesel oil.
Mf＝Qf*ρ f
Acquiring air intake mass flow G according to vehicle-mounted terminal moduleMAFAnd the calculated mass flow M of the engine fuelfCombined exhaust gas densityρ eUnit kg/m3According to GB17691-2018, the exhaust density of heavy-duty vehicles burning diesel oil is 1.2943kg/m3And comprehensively calculating to obtain the instantaneous exhaust volume flow MeUnit m of3The/h is calculated according to the following formula:
Me＝(GMAF+Mf)/ρ e
the control unit receives the smoke value signal K of the light-tight smoke meter in m-1(ii) a The mass concentration C of the particulate matter was calculated according to the following formulamUnit mg/m3。
Cm＝9.58+266.99K-215.63K2+76.11K3
According to the instantaneous exhaust volume flow M calculated by the above methodeAnd the mass concentration C of the particulate mattermThe mass flow G of the instantaneous particles is calculated by the following formulaPMUnit mg/h.
GPM＝Cm*Me
The second-by-second power P of the engine, the unit kw and the calculated mass flow G of the instantaneous particulate matter are obtained through the vehicle-mounted terminal modulePMAnd calculating the specific emission of the particulate matters in mg/kwh by combining the test time t and the following formula.
The invention provides a portable device and a method for rapidly detecting particulate matter emission of a non-road vehicle, which can be used for rapidly calculating the specific emission of the particulate matter through an opaque smoke value, engine power, oil consumption and air intake mass flow independently of the non-road vehicle.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a quick detection device of portable non-road mobile machinery particulate matter emission which characterized in that: the intelligent control system comprises a light-tight smoke meter, a vehicle-mounted terminal module, a control unit and an intelligent terminal;
the light-tight smoke meter is connected with the control unit and used for acquiring a light-tight smoke value in the tail gas and transmitting data to the control unit;
the vehicle-mounted terminal module is connected with the control unit and used for acquiring the power of the engine, the oil consumption and the air intake mass flow and transmitting data to the control unit;
the control unit transmits the acquired data to the intelligent terminal;
and the intelligent terminal also feeds back a control signal to the light-tight smoke meter to be started.
2. The portable non-road mobile machine particulate matter emission rapid detection device of claim 1, wherein: and the vehicle-mounted terminal module and the whole vehicle electric control system perform data interaction through a CAN bus.
3. The portable non-road mobile machine particulate matter emission rapid detection device of claim 1, wherein: the intelligent terminal comprises a mobile phone end APP.
4. The portable non-road mobile machine particulate matter emission rapid detection device of claim 3, wherein: the mobile phone terminal APP is provided with a login interface, a test configuration interface, a test main interface, a result query interface and an upgrade updating interface, a history file can be opened, a detailed professional report can be obtained, and curve results of smoke intensity, particulate matters and power can be displayed in real time on the test main interface.
5. A detection method of a portable non-road mobile machinery particulate matter emission rapid detection device is characterized in that: the method comprises the following steps:
(1) obtaining oil consumption Q through vehicle-mounted terminal modulefCalculating the instantaneous fuel mass flow M of the vehiclef；
(2) Acquiring air intake mass flow G according to vehicle-mounted terminal moduleMAFAnd the mass flow M of the engine fuel calculated in the step (1)fCalculating to obtain the instantaneous exhaust volume flow Me；
(3) The control unit receives a smoke value signal K of the light-tight smoke meter to calculate the mass concentration C of the particulate mattersm；
(4) According to the instantaneous exhaust volume flow M calculated in the steps (2) and (3)eAnd the mass concentration C of the particulate mattermCalculating the mass flow G of the instant particlesPM；
(5) The second-by-second power P of the engine acquired by the vehicle-mounted terminal module and the mass flow G of the instantaneous particulate matter calculated in the step (4)PMAnd calculating the specific emission of the particulate matters.
6. The detection method of the portable non-road mobile machinery particulate matter emission rapid detection device according to claim 5, characterized in that: in the step (1), the calculation formula is
Mf＝Qf*ρ f，ρ fIs the fuel density.
7. The detection method of the portable non-road mobile machinery particulate matter emission rapid detection device according to claim 6, characterized in that: in the step (2), the calculation formula is
Me＝(GMAF+Mf)/ρ e，ρ eIs the exhaust density, unit kg/m3。
8. The detection method of the portable non-road mobile machinery particulate matter emission rapid detection device according to claim 7, characterized in that: in the step (3), Cm＝9.58+266.99K-215.63K2+76.11K3。
9. The detection method of the portable non-road mobile machinery particulate matter emission rapid detection device according to claim 8, characterized in that: in the step (4), the calculation formula is
GPM＝Cm*Me。
10. The detection method of the portable non-road mobile machinery particulate matter emission rapid detection device according to claim 9, characterized in that: in the step (5), the calculation formula is
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