CN203324054U - Engine tail gas sampling system based on circulation - Google Patents
Engine tail gas sampling system based on circulation Download PDFInfo
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- CN203324054U CN203324054U CN2013203862909U CN201320386290U CN203324054U CN 203324054 U CN203324054 U CN 203324054U CN 2013203862909 U CN2013203862909 U CN 2013203862909U CN 201320386290 U CN201320386290 U CN 201320386290U CN 203324054 U CN203324054 U CN 203324054U
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- solenoid valve
- exhaust pipe
- engine
- tail gas
- control unit
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Abstract
The utility model discloses an engine tail gas sampling system based on circulation, and belongs to the technical field of car engines. A crankshaft position sensor is fixedly connected with an engine crankshaft, the inlet of a main exhaust pipe is fixedly connected with an engine exhaust pipe, the outlet end of the main exhaust pipe is fixedly connected with a solenoid valve I, a solenoid valve II is fixedly connected between the outlet end of a branch exhaust pipe I and the inlet end of a branch exhaust pipe II, the inlet end of the branch exhaust pipe I is fixedly connected with the lateral wall of the main exhaust pipe, and the outlet end of the branch exhaust pipe II is connected with a sampling bag. The solenoid valve I, the solenoid valve II and the crankshaft position sensor are controlled by an electric control unit, and the electric control unit controls the branch exhaust pipe I, the branch exhaust pipe II and the main exhaust pipe to open and close respectively through the solenoid valve I and the solenoid valve II. The electric control unit can achieve single or multiple circulation exhausted tail gas collection of an engine, the solenoid valves are used for adjusting the flow direction of tail gas, and are rapid in adjustment and sensitive in response, the sampling bag is used for collecting the tail gas and can carry out sampling continuously or discontinuously, and the weight of micro particles can be measured easily. The solenoid valves are small in size and low in requirement for installation space.
Description
Technical field
The utility model relates to a kind of motor exhaust sampling system based on circulation.
Background technology
Vehicle exhaust has become the particularly main source of urban atmospheric pollution of atmospheric pollution, and a large amount of motor vehicle exhaust emissions can't be dissipated by the depollution of environment in air, by human body, are absorbed greatly, have a strong impact on the healthy of people.Especially the particulate in vehicle exhaust, can be detained for a long time after being sucked lung by the people in vivo, causes the diseases such as lung cancer.And the less particulate of particle diameter more easily sucks by human body, also larger to the injury of human body.
At present, the research of vehicle exhaust is a lot of both at home and abroad.And the top priority that quality of particulate in vehicle exhaust and soluble organic etc. is analyzed is exactly to determine a set of feasible and sample collecting system that efficiency is high.
Carbon monoxide in vehicle exhaust (CO), hydrocarbon (HC), oxides of nitrogen (NOx), diameter of particle etc. can be used the Exhaust measurement instrument directly to measure, and particle mass, dissolved organic matters etc. need just can be measured after collection and treatment, and this just need to have pair vehicle exhaust can carry out accurately collecting the system of sampling.
Summary of the invention
The purpose of this utility model is to collect accurately the tail gas that engine discharges in certain single cycle or many circulation systems.
For solving the problems of the technologies described above, the utility model provides a kind of solenoid control exhaust gas flow direction, and collects tail gas by sampling bag.
The utility model is comprised of engine 1, main exhaust 2, electromagnetic valve I 3, ECU (Electrical Control Unit) 4, a gas outlet I 5, a gas outlet II 6, sampling bag 7, solenoid valve II 8, crankshaft position sensor 9, it is characterized in that crankshaft position sensor 9 is fixed on engine 1 bent axle; Main exhaust 2 inlet ends are fixed on engine 1 gas outlet, and main exhaust 2 endpiece are connected with solenoid valve I 3; Prop up between gas outlet I 5 endpiece and gas outlet II 6 inlet end and be connected with solenoid valve II 8, gas outlet I 5 inlet end and main exhaust 2 sidewalls are affixed; Propping up gas outlet II 6 endpiece is connected with sampling bag 7; Solenoid valve I 3, solenoid valve II 8 and crankshaft position sensor 9 are controlled by ECU (Electrical Control Unit) 4, and ECU (Electrical Control Unit) 4 is controlled respectively the open and close of a gas outlet I 5, a gas outlet II 6 and main exhaust 2 pipelines through solenoid valve I 3, solenoid valve II 8.
The utility model is the system realized at engine pedestal gasoline feeder accurate sampling tail gas in certain single cycle or certain many circulation.Change by the approach of closing and the unlatching realization of solenoid valve II 8 being discharged tail gas to solenoid valve I 3.Make motor exhaust flow through bronchial II 6 finally to sampling bag 7, thereby realize the collection of tail gas.
System work process of the present utility model is: when engine 1 is started working, electric control system controls solenoid valve I 3 is opened, and solenoid valve II 8 is closed.Tail gas flows out through main exhaust 2.When engine 1 each side operating mode meets the experiment collection requirement, ECU (Electrical Control Unit) is controlled solenoid valve I 3 and is closed, and solenoid valve II 8 is opened, thereby collects tail gas by sampling bag 7.When completing certain single cycle of requirement of experiment or multicycle collection, ECU (Electrical Control Unit) is controlled solenoid valve I 3 and is opened, and solenoid valve II 8 is closed, and at this moment tail gas stream is discharged through main exhaust 2, the sampling bag 7 be connected with a gas exhaust duct II 6 does not regather tail gas, and now exhaust collection is complete.
Compared with prior art the beneficial effects of the utility model are:
1. ECU (Electrical Control Unit) can realize certain single cycle of engine operation or the collection of many cycle bleeders tail gas.
2. utilize solenoid valve to regulate exhaust gas flow direction, solenoid valve is the lift valve that servomotor drives, and regulates rapidly, is quick on the draw.
With sampling bag collect tail gas can serial sampling also can backlash sampling, also be easy to the calculating to particle mass.
4. the electromagnetic valve structure size reduction used, reduce requirements of installation space.
The accompanying drawing explanation
Fig. 1 is the motor exhaust sampling system structural representation based on circulation
The control flow chart that Fig. 2 is the motor exhaust sampling system ECU (Electrical Control Unit) based on circulation
Wherein: 1. 6. gas outlet II of engine 2. main exhaust 3. 5. gas outlet I of solenoid valve I 4. ECU (Electrical Control Unit), 7. sampling bag 8. solenoid valve II 9. crankshaft position sensors
Embodiment
Do further and elaborate below in conjunction with 1 pair of technical solutions of the utility model of accompanying drawing:
When the utility model system is started working, the tail gas of discharging from engine 1 is introduced into main exhaust 2, and the crankshaft-position signal data that crankshaft position sensor 9 collects are sent to ECU (Electrical Control Unit) 4.ECU (Electrical Control Unit) 4 is set sampling constantly and the setup control period.Set sampling constantly the time when engine 1 work reaches, ECU (Electrical Control Unit) 4 is sent to solenoid valve I 3 and solenoid valve II 8 a gas outlet II 6 and the gas outlet I 5 that instruction unpack is equipped with sampling bag 7 and is closed main exhaust 2 simultaneously.Now sampling bag 7 starts to collect tail gas.When engine operational cycle is counted to while reaching the setup control period, ECU (Electrical Control Unit) 4 is sent instruction and is controlled solenoid valve I 3 and open, and solenoid valve II 8 is closed; Now exhaust collection is complete, and the motor exhaust main exhaust 2 of flowing through is discharged in environment.
2 specific works process of the present utility model is described by reference to the accompanying drawings:
1. engine 1 starting, this tail gas sampling system is started working, and the crankshaft-position signal that ECU (Electrical Control Unit) collects according to crankshaft position sensor 9 is set sampling constantly, and the setup control period.
2. the tail gas of discharging after engine 1 starting is introduced into main exhaust 2, and the crankshaft-position signal data that crankshaft position sensor 9 collects are sent to ECU (Electrical Control Unit) 4.
3. the data analysis of 4 pairs of collections of ECU (Electrical Control Unit), determine now to sample the zero hour when whether engine 1 work reaches, and when not reaching the zero hour, ECU (Electrical Control Unit) is controlled solenoid valve I 3 and opened, and solenoid valve II 8 is closed.Tail gas stream is discharged in environment through main exhaust 2.
4. work and reach the zero hour when engine 1, the crankshaft-position signal data that collect by crankshaft position sensor 9, ECU (Electrical Control Unit) 4 starts to count engine 1 working cycle number.The solenoid valve of ECU (Electrical Control Unit) control simultaneously I 3 is closed, and solenoid valve II 8 is opened.Closing of solenoid valve I 3 closed main exhaust 2, and the unlatching of solenoid valve II 8 makes motor exhaust flow to sampling bag 7 through a gas outlet I 5 and a gas outlet II 6.
5. when the working cycle number of engine 1 reaches controlled circulation that ECU (Electrical Control Unit) 4 sets and counts, ECU (Electrical Control Unit) 4 is sent instruction, controls solenoid valve I 3 and opens and solenoid valve II 8 closures.Engine discharging tail gas changes flow direction, and the main exhaust 2 that solenoid valve I 3 is housed of flowing through finally is discharged in environment.Now motor exhaust is collected complete.
Claims (1)
- One kind based on the circulation the motor exhaust sampling system, formed by engine (1), main exhaust (2), electromagnetic valve I (3), ECU (Electrical Control Unit) (4), a gas outlet I (5), a gas outlet II (6), sampling bag (7), solenoid valve II (8), crankshaft position sensor (9), it is characterized in that crankshaft position sensor (9) is fixed on engine (1) bent axle; Main exhaust (2) inlet end is fixed on engine (1) gas outlet, and main exhaust (2) endpiece is connected with solenoid valve I (3); Prop up between gas outlet I (5) endpiece and gas outlet II (a 6) inlet end and be connected with solenoid valve II (8), gas outlet I (a 5) inlet end and main exhaust (2) sidewall are affixed; Propping up gas outlet II (6) endpiece is connected with sampling bag (7); Solenoid valve I (3), solenoid valve II (8) and crankshaft position sensor (9) are controlled by ECU (Electrical Control Unit) (4), and ECU (Electrical Control Unit) (4) is controlled respectively the open and close of a gas outlet I (5), a gas outlet II (6) and main exhaust (2) pipeline through solenoid valve I (3), solenoid valve II (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203862909U CN203324054U (en) | 2013-06-30 | 2013-06-30 | Engine tail gas sampling system based on circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203862909U CN203324054U (en) | 2013-06-30 | 2013-06-30 | Engine tail gas sampling system based on circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203324054U true CN203324054U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203862909U Expired - Fee Related CN203324054U (en) | 2013-06-30 | 2013-06-30 | Engine tail gas sampling system based on circulation |
Country Status (1)
| Country | Link |
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| CN (1) | CN203324054U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969089A (en) * | 2014-04-04 | 2014-08-06 | 深圳职业技术学院 | Automobile exhaust sampling device and sampling method thereof |
| CN104020018A (en) * | 2014-06-11 | 2014-09-03 | 中国环境科学研究院 | Vehicle-mounted diluting and sampling system of particulate matters |
| CN105547767A (en) * | 2015-12-14 | 2016-05-04 | 天津市天环精细化工研究所 | Catalyst lab-scale test sampling air-flow distributor |
| CN105699135A (en) * | 2016-04-20 | 2016-06-22 | 天津大学 | Engine exhaust particle sampling system and using method thereof |
| CN105716916A (en) * | 2016-04-20 | 2016-06-29 | 天津大学 | Classifying and sampling system for exhaust particulate matters of engine and use method of classified sampling system |
| CN110243639A (en) * | 2019-06-12 | 2019-09-17 | 同济大学 | A kind of motor exhaust contiguous segmentation acquisition device |
-
2013
- 2013-06-30 CN CN2013203862909U patent/CN203324054U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969089A (en) * | 2014-04-04 | 2014-08-06 | 深圳职业技术学院 | Automobile exhaust sampling device and sampling method thereof |
| CN104020018A (en) * | 2014-06-11 | 2014-09-03 | 中国环境科学研究院 | Vehicle-mounted diluting and sampling system of particulate matters |
| CN105547767A (en) * | 2015-12-14 | 2016-05-04 | 天津市天环精细化工研究所 | Catalyst lab-scale test sampling air-flow distributor |
| CN105699135A (en) * | 2016-04-20 | 2016-06-22 | 天津大学 | Engine exhaust particle sampling system and using method thereof |
| CN105716916A (en) * | 2016-04-20 | 2016-06-29 | 天津大学 | Classifying and sampling system for exhaust particulate matters of engine and use method of classified sampling system |
| CN110243639A (en) * | 2019-06-12 | 2019-09-17 | 同济大学 | A kind of motor exhaust contiguous segmentation acquisition device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140630 |
|
| EXPY | Termination of patent right or utility model |