CN103115650A - On-line measurement device for vehicle-mounted vehicle exhaust discharge quantity - Google Patents
On-line measurement device for vehicle-mounted vehicle exhaust discharge quantity Download PDFInfo
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- CN103115650A CN103115650A CN2013100283275A CN201310028327A CN103115650A CN 103115650 A CN103115650 A CN 103115650A CN 2013100283275 A CN2013100283275 A CN 2013100283275A CN 201310028327 A CN201310028327 A CN 201310028327A CN 103115650 A CN103115650 A CN 103115650A
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Abstract
Disclosed is an on-line measurement device for vehicle-mounted vehicle exhaust discharge quantity. The on-line measurement device for the vehicle-mounted vehicle exhaust discharge quantity is characterized by comprising a gas buffer tank, a drying heat extraction steam device and a thermal type gas mass flow meter, wherein the gas buffer tank is connected with a vehicle exhaust discharge pipe in series through a pipeline and is made of stainless steel materials, and the drying heat extraction steam device and the thermal type gas mass flow meter are made of the stainless steel materials. A vehicle exhaust inlet is arranged above the left side of the front face of the gas buffer tank, an exhaust discharge pipe port which is connected with a gas inlet pipe port of the drying heat extraction steam device is arranged above the right side face of the gas buffer tank, and a water drainage outlet is arranged below an exhaust outlet. Silica gel balls are filled into a cavity body of the drying heat extraction steam device, an exhaust discharge pipe port of the drying heat extraction steam device is connected with a gas inlet pipe port of the thermal type gas mass flow meter, and an exhaust discharge pipe port of the thermal type gas mass flow meter is communicated with the atmosphere. The on-line measurement device for the vehicle-mounted vehicle exhaust discharge quantity is simple in system structure, convenient to use, capable of directly measuring vehicle exhaust quantity on line under different working conditions, good in repeatability of measured vehicle exhaust quantity data, and high in reliability.
Description
Technical field
The present invention relates to the Environmental Technology field, particularly relate to a kind of device for the on-line measurement of motor vehicle exhaust emission amount.This apparatus system can be realized the on-line determination of gas flow under high-temperature vapor.
Background technology
Now, environmental protection is subject to the attention of society day by day, and wherein along with the surge of automobile quantity, the pollution problem of motor vehicle exhaust emission receives people's concern more.At present, the method for testing of motor vehicle exhaust emission there are idling method, Double idle state method, steady state condition method (ASM), simple transient behavior method (VMAS) and the transient behavior method (IM).The parameter that various method of testings can record, equipment needed thereby and relative merits such as following table:
As above shown in the table, these method of testings are only to measure the concentration of vehicle exhaust harmful gas (as CO) composition, only have to increase in simple transient behavior method and have used gas meter (vortex flowmeter).Owing to being the data of testing under idling or simple and easy operating mode, be difficult to objective evaluation is carried out in the discharging of vehicle, and in its method of testing, the equipment needed thereby area occupied is large, complicated operation, the Preparatory work of experiment time is long, test condition is limited, and cost is high, can't obtain automobile under the actual motion condition exhaust emissions with the dynamic change of the speed of a motor vehicle and acceleration.And in simple transient behavior method, the measurement of motor vehicle exhaust emission flow is to analyze after by gas flow rate analyzer, former emission gases being diluted again, emission gases flow under standard state is the product of dilution discharge gas flow and dilution ratio, directly the discharge capacity of measured automobiles tail gas.
Measurement to the motor vehicle exhaust emission amount is the important tool that motor vehicle exhaust emission is detected.The air capacity of automobile engine when friction speed is different, discharge pressure is different, gas temperature is different, and has water vapor, to the motor vehicle exhaust emission amount have larger difficulty with the car on-line measurement, be difficult to directly measure.
Summary of the invention
Purpose of the present invention provides the device of a kind of measurement data vehicle-mounted motor vehicle exhaust emission amount on-line measurement accurate, simple in structure, easy to use just for existing weak point in above-mentioned prior art.
Purpose of the present invention can realize by following technique measures:
The device of vehicle-mounted motor vehicle exhaust emission amount of the present invention on-line measurement comprises the gas buffer tank that the employing stainless steel material that is connected with vehicle vent gas discharging pipe with series system by pipeline is prepared from, dry heat extraction steam unit, the thermal type gas quality flow meter that adopts stainless steel material to be prepared from; Wherein, be provided with the vehicle exhaust entrance above described gas buffer tank frontal left, be provided with the exhaust emissions mouth of pipe that is connected with the dry heat extraction steam unit air inlet mouth of pipe above right flank, be provided with freeing port below the tail gas outlet; Described drying is filled with silica-gel sphere except in the cavity of steam unit, and the dry exhaust emissions mouth of pipe except steam unit is connected with the air inlet mouth of pipe of thermal type gas quality flow meter, and the exhaust emissions mouth of pipe of thermal type gas quality flow meter is communicated with atmosphere.
The tank arrangement of gas buffer described in the present invention inner chamber is divided into by dividing plate two cavitys that the bottom is communicated with, and is filled with respectively Raschig ring filler in two cavitys.
Gas buffer tank described in the present invention can keep steady, the minimizing pulse phenomenon of vehicle exhaust air-flow, and can remove portion water vapor and smokeshade, reduction is by pressure, the steady pressure of the large generation of flow, thereby plays the protection of back equipment and improve the effect such as measuring accuracy; Described dry heat extraction steam unit can be removed heat steam and part smokeshade in vehicle exhaust; Described thermal type gas quality flow meter is powered after the mobile transformer pressure regulation by vehicle power.Require described thermal type gas quality flow meter to have following characteristics: range is higher than 30Nm/s, and the response time, precision was not less than 1% lower than 3 seconds, serviceability temperature scope-40～400 ℃.It is connected with dry heat extraction steam unit, can more accurately realize with car on-line measurement motor vehicle exhaust emission amount.
Beneficial effect of the present invention is as follows:
Utilize apparatus system of the present invention, realized simple in structure, easy to use and can be with car on-line measurement motor vehicle exhaust emission amount under different operating modes, for the detection of motor vehicle exhaust emission provides data parameters accurately.The motor vehicle exhaust emission amount Data duplication that utilizes this apparatus system to measure is good, and reliability is high.
The present invention not only goes for the measurement of motor vehicle exhaust emission amount, also can be used for similar therewith situation.
Description of drawings
Fig. 1 is the front view of gas buffer tank.
Fig. 2 is the cut-open view of figure.
Fig. 3 is the front view of dry heat extraction steam unit.
Fig. 4 is the front view of thermal type gas quality flow meter.
Fig. 5 is the apparatus system theory diagram.
Embodiment
The present invention is further detailed below with reference to embodiment (accompanying drawing):
As shown in Figure 5, the device of vehicle-mounted motor vehicle exhaust emission amount of the present invention on-line measurement comprises that the employing stainless steel material that is connected with vehicle vent gas discharging pipe with series system by pipeline is prepared from the gas buffer tank, adopts stainless steel material to be prepared from dry heat extraction steam unit, thermal type gas quality flow meter; Wherein, be provided with vehicle exhaust entrance 1 above described gas buffer tank (referring to Fig. 1) frontal left, be provided with the exhaust emissions mouth of pipe 2 that is connected with the dry heat extraction steam unit air inlet mouth of pipe 4 above right flank, be provided with freeing port 3 below the tail gas outlet; Described drying is filled with silica-gel sphere 5 except in the cavity of steam unit (referring to Fig. 3), the dry exhaust emissions mouth of pipe 6 except steam unit is connected with the air inlet mouth of pipe 7 of thermal type gas quality flow meter (referring to Fig. 4), and the exhaust emissions mouth of pipe 8 of thermal type gas quality flow meter is communicated with atmosphere.
As shown in Figure 2, the tank arrangement of gas buffer described in the present invention inner chamber is divided into by dividing plate 9 two cavitys that the bottom is communicated with, and is filled with respectively Raschig ring filler 10 in two cavitys.
The concrete tail gas discharge capacity test job process of the present embodiment is as follows:
The vehicle exhaust entrance 1 of gas buffer tank is connected with automobile tail gas pipe, the exhaust emissions mouth of pipe 2 of gas buffer tank is connected with the air inlet mouth of pipe 4 of dry heat extraction steam unit, the exhaust emissions mouth of pipe 6 of dry heat extraction steam unit is connected with the air inlet mouth of pipe 7 of thermal type gas quality flow meter, and the exhaust emissions mouth of pipe 8 of thermal type gas quality flow meter is discharged vehicle exhaust.
Automobile is under actual condition in driving process, tail gas keeps the steady of air-flow through the gas buffer tank, steady pressure, after remove portion water vapor and smokeshade, further remove heat steam and part smokeshade in vehicle exhaust through super-dry heat extraction steam unit, enter at last the thermal type gas quality flow meter on-line measurement and record the exhaust emissions amount.Last deal with data obtains the exhaust emissions amount of automobile in the actual travel process.
Claims (2)
1. the device of vehicle-mounted motor vehicle exhaust emission amount on-line measurement is characterized in that: it comprises the gas buffer tank that the employing stainless steel material that is connected with vehicle vent gas discharging pipe with series system by pipeline is prepared from, dry heat extraction steam unit, the thermal type gas quality flow meter that adopts stainless steel material to be prepared from; Wherein, be provided with the vehicle exhaust entrance above described gas buffer tank frontal left, be provided with the exhaust emissions mouth of pipe that is connected with the dry heat extraction steam unit air inlet mouth of pipe above right flank, be provided with freeing port below the tail gas outlet; Described drying is filled with silica-gel sphere except in the cavity of steam unit, and the dry exhaust emissions mouth of pipe except steam unit is connected with the air inlet mouth of pipe of thermal type gas quality flow meter, and the exhaust emissions mouth of pipe of thermal type gas quality flow meter is communicated with atmosphere.
2. want the device of 1 described vehicle-mounted motor vehicle exhaust emission amount on-line measurement according to right, it is characterized in that: described gas buffer tank arrangement inner chamber is divided into by dividing plate two cavitys that the bottom is communicated with, and is filled with respectively Raschig ring filler in two cavitys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100283275A CN103115650A (en) | 2013-01-25 | 2013-01-25 | On-line measurement device for vehicle-mounted vehicle exhaust discharge quantity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100283275A CN103115650A (en) | 2013-01-25 | 2013-01-25 | On-line measurement device for vehicle-mounted vehicle exhaust discharge quantity |
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| CN103115650A true CN103115650A (en) | 2013-05-22 |
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| CN2013100283275A Pending CN103115650A (en) | 2013-01-25 | 2013-01-25 | On-line measurement device for vehicle-mounted vehicle exhaust discharge quantity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370482A (en) * | 2016-10-25 | 2017-02-01 | 吉林大学 | Tail gas collecting box for detecting PM (Particulate Matter) 2.5 content of automobile tail gas |
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| CN2747566Y (en) * | 2004-11-29 | 2005-12-21 | 吉林大学 | Fuel consumption measurer for car |
| CN101166963A (en) * | 2005-04-29 | 2008-04-23 | 卡特彼勒公司 | Particulate sampling system having flow check device |
| CN1888857A (en) * | 2005-06-29 | 2007-01-03 | 北京金铠星科技有限公司 | Gasoline vehicle tail gas discharging pollutant total quantity measuring equipment and method thereof |
| CN201955302U (en) * | 2010-09-02 | 2011-08-31 | 武汉市天虹仪表有限责任公司 | Air passage system for real-time measurement of automobile exhaust |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370482A (en) * | 2016-10-25 | 2017-02-01 | 吉林大学 | Tail gas collecting box for detecting PM (Particulate Matter) 2.5 content of automobile tail gas |
| CN106370482B (en) * | 2016-10-25 | 2023-10-20 | 吉林大学 | Tail gas collecting box for detecting PM2.5 content of automobile tail gas |
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Application publication date: 20130522 |