CN204255704U - Engine startup is particulate sampling system stage by stage - Google Patents
Engine startup is particulate sampling system stage by stage Download PDFInfo
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- CN204255704U CN204255704U CN201420786098.3U CN201420786098U CN204255704U CN 204255704 U CN204255704 U CN 204255704U CN 201420786098 U CN201420786098 U CN 201420786098U CN 204255704 U CN204255704 U CN 204255704U
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- solenoid valve
- gas outlet
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Abstract
Engine startup stage by stage particulate sampling system belongs to technical field of engines, in the utility model main exhaust inlet end and the exhaust pipe of engine affixed, main exhaust endpiece is provided with solenoid valve I; Prop up gas outlet I inlet end, gas outlet II endpiece and gas outlet III inlet end affixed, and intercommunication; Gas outlet I endpiece is affixed with sampler bag I entrance, gas outlet III endpiece and sampler bag II entrance affixed, prop up gas outlet II inlet end and be fixed in section between the exhaust pipe of engine of main exhaust and solenoid valve I, and communicate with main exhaust; Prop up in the middle part of gas outlet I and be provided with solenoid valve II, in the middle part of a gas outlet II, be provided with solenoid valve III, in the middle part of a gas outlet III, be provided with solenoid valve IV; Solenoid valve I, solenoid valve II, solenoid valve III and solenoid valve IV control by ECU (Electrical Control Unit); The utility model can be applicable to the sampling of gasoline starting process discharge tail gas well, and be convenient to the measurement to particle mass and the analysis to particle components, structure is simple, easy to use.
Description
Technical field
The utility model belongs to technical field of engines, is specifically related to a kind of system of collecting stage by stage the tail gas that engine startup discharges based on bag sampling method.
Background technology
Direct spray petrol engine in cylinder is relative to conventional gas introduction road injected petrol machine, direct spray petrol engine in cylinder is ejected into the fuel-oil atmozation heat absorption in cylinder, thus reduces cylinder temperature, improves coefficient of charge, therefore improve fuel economy, therefore direct spray petrol engine in cylinder is widely used.But the mode producing combination gas due to direct spray petrol engine in cylinder is different from intake port injection gasoline engine, thus cause discharge particle mass concentration and number concentration all far away than intake port injection gasoline exhaust many.Suspend aerial particle not only to environment, and the particle of different-grain diameter can enter throat and alveolar respectively, also can produce adverse influence to human body.Just add especially inside the emission standard of Europe five regulation direct spray petrol engine in cylinder discharge particle mass this.Therefore the particle of engine discharge is collected so that the follow-up research to particle has very important realistic meaning and far-reaching significance.
It is the warm-up period eliminating 40s after cold start that state three emission standard is the most obviously different from previous national standard, in addition, cold-start period is the process that in whole test loop, combustion case is the most severe, therefore the discharge in research engine startup 40s is necessary.
Fig. 2 is obtained by existing experimental data research institute, is the particle number concentration course figure over time discharged in direct spray petrol engine in cylinder starting process 40s.As seen from Figure 2, in several seconds of engine start, particle number concentration experienced by and rises fast and sharply decline, and after this, engine enters idling, and particle number concentration is also tending towards tranquil.Because the operating mode in these two stages is inconsistent, therefore the 40s of direct spray petrol engine in cylinder starting process is divided into two stages, and collects the particulate in two stages respectively, provide reference frame for convenience of follow-up particle research and the formulation of the control strategy reducing particulate.
The change of starting process operating mode is not also considered in the existing research to direct spray petrol engine in cylinder starting process discharge particulate, and the particulate discharged under different operating mode is collected post analysis together, and the experimental result of gained really can not reflect the particulate situation that real engine discharges.
Summary of the invention
The purpose of this utility model is to provide a kind of system of sampling stage by stage to the tail gas of engine startup discharge.
For achieving the above object, the utility model arranges two sampler bags to carry out exhaust collection to two stages of starting process respectively on a gas outlet.
The utility model is made up of engine 1, main exhaust 2, solenoid valve I 3, ECU (Electrical Control Unit) 4, sampler bag I 5, a gas outlet I 6, solenoid valve II 7, solenoid valve III 8, a gas outlet II 9, solenoid valve IV 10, a gas outlet III 11 and sampler bag II 12, wherein main exhaust 2 inlet end and engine 1 gas outlet affixed, main exhaust 2 endpiece is provided with solenoid valve I 3; Prop up gas outlet I 6 inlet end, gas outlet II 9 endpiece and gas outlet III 11 inlet end affixed, and intercommunication; Gas outlet I 6 endpiece and sampler bag I 5 entrance affixed, gas outlet III 11 endpiece and sampler bag II 12 entrance affixed, prop up gas outlet II 9 inlet end and be fixed in section between engine 1 gas outlet of main exhaust 2 and solenoid valve I 3, and communicate with main exhaust 2; Prop up in the middle part of gas outlet I 6 and be provided with solenoid valve II 7, in the middle part of a gas outlet II 9, be provided with solenoid valve III 8, in the middle part of a gas outlet III 11, be provided with solenoid valve IV 10; Solenoid valve I 3, solenoid valve II 7, solenoid valve III 8 and solenoid valve IV 10 control by ECU (Electrical Control Unit) 4.
ECU (Electrical Control Unit) 4 controls with opening and closing main delivery pipe solenoid valve I 3, solenoid valve II 7, solenoid valve III 8 and solenoid valve IV 10 according to the sampling instant preset, thus realizes the collection to tail gas.
The tail gas that the utility model can realize engine startup discharge is collected stage by stage.By shut electromagnetic valve I 3 and opens solenoid valve III 8, opens solenoid valve II 7 or solenoid valve IV 10 as required, thus realize tail gas collection stage by stage.
The course of work of the utility model system is: when engine 1 starts, ECU (Electrical Control Unit) 4 Controlling solenoid valve I 3 is closed, solenoid valve II 7 and solenoid valve III 8 are opened, collect the tail gas of first stage in sampler bag I 5, first stage has collected rear shut electromagnetic valve II 7, and opens solenoid valve IV 10, collect the tail gas of second stage in sampler bag II 12, after subordinate phase has been collected, shut electromagnetic valve III 8 and solenoid valve IV 10, opens solenoid valve I 3, now tail gas stream is discharged through main exhaust 2, and exhaust collection is complete.
The beneficial effects of the utility model are:
1. can realize the collection stage by stage to starting process emission, the sampling of gasoline starting process discharge tail gas can be applicable to well;
2., due to the fast-response of solenoid valve, making the utility model be applied to direct spray petrol engine in cylinder, to survey data accurate.
3. be convenient to the measurement to particle mass and the analysis to particle components.
4. structure is simple, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of engine startup sampling system stage by stage
Fig. 2 is 97# gasoline particles number concentration change course figure
Wherein: 1. engine 2. main exhaust 3. solenoid valve I 4. ECU (Electrical Control Unit) 5. sampler bag I 6. gas outlet I 7. solenoid valve II 8. solenoid valves, III 9. gas outlet II 10. solenoid valves IV 11. gas outlet III 12. sampler bags II
Embodiment
Be described in more detail below in conjunction with accompanying drawing 1 pair of the utility model:
The utility model is made up of engine 1, main exhaust 2, solenoid valve I 3, ECU (Electrical Control Unit) 4, sampler bag I 5, a gas outlet I 6, solenoid valve II 7, solenoid valve III 8, a gas outlet II 9, solenoid valve IV 10, a gas outlet III 11 and sampler bag II 12, wherein main exhaust 2 inlet end and engine 1 gas outlet affixed, main exhaust 2 endpiece is provided with solenoid valve I 3; Prop up gas outlet I 6 inlet end, gas outlet II 9 endpiece and gas outlet III 11 inlet end affixed, and intercommunication; Gas outlet I 6 endpiece and sampler bag I 5 entrance affixed, gas outlet III 11 endpiece and sampler bag II 12 entrance affixed, prop up gas outlet II 9 inlet end and be fixed in section between engine 1 gas outlet of main exhaust 2 and solenoid valve I 3, and communicate with main exhaust 2; Prop up in the middle part of gas outlet I 6 and be provided with solenoid valve II 7, in the middle part of a gas outlet II 9, be provided with solenoid valve III 8, in the middle part of a gas outlet III 11, be provided with solenoid valve IV 10; Solenoid valve I 3, solenoid valve II 7, solenoid valve III 8 and solenoid valve IV 10 control by ECU (Electrical Control Unit) 4.
ECU (Electrical Control Unit) 4 controls with opening and closing main delivery pipe solenoid valve I 3, solenoid valve II 7, solenoid valve III 8 and solenoid valve IV 10 according to the sampling instant preset, thus realizes the collection to tail gas.
In the utility model, engine 1 is applicable to the direct spray petrol engine in cylinder of middle small displacement.
Main exhaust 2 uses former machine gas outlet.
Solenoid valve I 3, solenoid valve II 7, solenoid valve III 8 and solenoid valve IV 10 all adopt high temperature resistant lift valve, and its driving force is provided by servomotor.
ECU (Electrical Control Unit) 4 has 80c196 chip, with the opening and closing of Controlling solenoid valve I 3, solenoid valve II 7, solenoid valve III 8 and solenoid valve IV 10.
Sampler bag I 5 and sampler bag II 12 the selection of material are the sampler bag of Plain PE film.
Prop up the pipe that gas outlet I 6, a gas outlet II 9 and a gas outlet III 11 can use material identical with main exhaust 2.
During the utility model system works, ECU (Electrical Control Unit) 4 sets sampling instant in advance.After engine 1 starts, ECU (Electrical Control Unit) 4 closes solenoid valve I 3 according to the sampling instant of first stage, sends instruction opens solenoid valve III 8 and solenoid valve II 7 simultaneously, makes motor exhaust be collected into sampler bag I 5.When engine operation completes first stage sampling instant, ECU (Electrical Control Unit) sends instruction shut electromagnetic valve II 7, and opens solenoid valve IV 10, makes motor exhaust be collected into sampler bag II 12 simultaneously.When engine operation completes second stage sampling instant, ECU (Electrical Control Unit) sends instruction shut electromagnetic valve III 8 and solenoid valve IV 10, simultaneously opens solenoid valve I 3, and now exhaust collection is complete, and motor exhaust flows through main exhaust 2 and is discharged in air.
Claims (1)
1. engine startup particulate sampling system stage by stage, by engine (1), main exhaust (2), solenoid valve I (3), ECU (Electrical Control Unit) (4), sampler bag I (5), prop up gas outlet I (6), solenoid valve II (7), solenoid valve III (8), prop up gas outlet II (9), solenoid valve IV (10), prop up gas outlet III (11) and sampler bag II (12) composition, it is characterized in that wherein main exhaust (2) inlet end and engine (1) gas outlet are affixed, main exhaust (2) endpiece is provided with solenoid valve I (3), prop up gas outlet I (6) inlet end, gas outlet II (9) endpiece and gas outlet III (11) inlet end affixed, and intercommunication, gas outlet I (6) endpiece and sampler bag I (5) entrance affixed, gas outlet III (11) endpiece and sampler bag II (12) entrance affixed, prop up gas outlet II (9) inlet end and be fixed in section between engine (1) gas outlet of main exhaust (2) and solenoid valve I (3), and communicate with main exhaust (2), prop up gas outlet I (6) middle part and be provided with solenoid valve II (7), gas outlet II (9) middle part is provided with solenoid valve III (8), is provided with solenoid valve IV (10) in the middle part of a gas outlet III (11), solenoid valve I (3), solenoid valve II (7), solenoid valve III (8) and solenoid valve IV (10) control by ECU (Electrical Control Unit) (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786098.3U CN204255704U (en) | 2014-12-13 | 2014-12-13 | Engine startup is particulate sampling system stage by stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786098.3U CN204255704U (en) | 2014-12-13 | 2014-12-13 | Engine startup is particulate sampling system stage by stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204255704U true CN204255704U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420786098.3U Expired - Fee Related CN204255704U (en) | 2014-12-13 | 2014-12-13 | Engine startup is particulate sampling system stage by stage |
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| Country | Link |
|---|---|
| CN (1) | CN204255704U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865858A (en) * | 2016-04-20 | 2016-08-17 | 天津大学 | Sampling system for ash of exhausted gas of engine and application method of sampling system |
| CN110243639A (en) * | 2019-06-12 | 2019-09-17 | 同济大学 | A kind of motor exhaust contiguous segmentation acquisition device |
-
2014
- 2014-12-13 CN CN201420786098.3U patent/CN204255704U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865858A (en) * | 2016-04-20 | 2016-08-17 | 天津大学 | Sampling system for ash of exhausted gas of engine and application method of 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: 20150408 Termination date: 20151213 |
|
| EXPY | Termination of patent right or utility model |