CN206496906U - A kind of constant volume constant pressure mixing theory Constant Volume Bomb - Google Patents
A kind of constant volume constant pressure mixing theory Constant Volume Bomb Download PDFInfo
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- CN206496906U CN206496906U CN201720040710.6U CN201720040710U CN206496906U CN 206496906 U CN206496906 U CN 206496906U CN 201720040710 U CN201720040710 U CN 201720040710U CN 206496906 U CN206496906 U CN 206496906U
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- constant
- constant pressure
- constant volume
- end cover
- mixing theory
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 9
- 230000000740 bleeding effect Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 6
- 238000004088 simulation Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The utility model discloses a kind of constant volume constant pressure mixing theory Constant Volume Bomb, includes being provided with upper end cover at the top of the chamber wall of tubular, chamber wall, bottom is provided with bottom end cover, and middle part is provided with constant pressure piston；Upper end cover is provided with air inlet pipe, blast pipe, pressure sensor and spark plug, and bottom end cover is provided with constant pressure air inlet pipe and excessive tracheae；Space inside chamber wall is divided into the combustion chamber on top and the constant voltage room of bottom by constant pressure piston, and its top is provided with the back-up ring being fixed on chamber wall madial wall, and position sensor is fixedly installed in lower section.The utility model can carry out related research to the constant volume constant pressure mixing theory combustion process of internal combustion engine；It can be also used for studying the influence to constant volume constant pressure mixing theory burning combustion process such as thermodynamic parameter, ignition parameter.
Description
Technical field
The utility model, which is related to, starts rear family's technical field, specially a kind of constant volume-constant pressure mixing theory combustion simulation experiment dress
Put.
Background technology
Energy-saving and emission-reduction turn into the theme of today's society, reasonably the combustion position of tissue engine, to realizing Combustion System,
Raising starts dynamic property, economy and improvement discharge to have highly important meaning.Due to actual ejection atomization, the expansion of engine
The processes such as scattered, evaporation, burning, heat transfer are sufficiently complex, and with cyclical variations, the control to environmental condition is more difficult, and
It is difficult to carry out observational study.Therefore, the combustion research of internal combustion engine is mostly enterprising in constant volume combustion bomb visual Simulation experimental provision
OK.Current internal combustion engine mainly has constant volume burning, constant pressure combustion and constant volume-constant pressure mixing theory three broad theory combustion methods of burning.
Constant volume burning thermal efficiency highest, the constant pressure combustion thermal efficiency is minimum, but when the pressure in cylinder reaches the maximum limit of its mechanical structure
By its thermal efficiency highest of constant pressure combustion tissue during value.Therefore, constant volume-constant pressure mixing theory combustion of the high thermal efficiency and realizability is had concurrently
The scheme of burning is carried out by extensive concern there is presently no specific visual Simulation experimental provision to related combustion process
Simulated experiment.
Utility model content
For these reasons, the purpose of this utility model is to provide a kind of constant volume-constant pressure mixing theory being easy to internal combustion engine
Combustion process carries out constant volume-constant pressure mixing theory Constant Volume Bomb of related research.Technical scheme is as follows：
A kind of spark ignition type constant volume-constant pressure mixing theory Constant Volume Bomb, includes the chamber wall of tubular, chamber wall top
Portion is provided with upper end cover, and bottom is provided with bottom end cover, and middle part is provided with constant pressure piston；Upper end cover is provided with air inlet pipe, blast pipe, pressure
Sensor and spark plug, bottom end cover are provided with constant pressure air inlet pipe and excessive tracheae；Constant pressure piston divides the space inside chamber wall
The constant voltage room of combustion chamber and bottom for top, its top is provided with the back-up ring being fixed on chamber wall madial wall, and lower section is solid
Position sensor is set surely；Also including control experimental provision operation ECU, pressure sensor, spark plug and position sensor, with
And the intake valve being arranged in air inlet pipe, the air bleeding valve being arranged on blast pipe, the constant pressure air inlet that is arranged in constant pressure air inlet pipe
Valve and the pressure limiting valve being arranged on excessive tracheae are all connected to ECU.
Further, the spark plug is replaced with into fuel injector and constitutes compression-ignited constant volume-constant pressure mixing theory combustion simulation experiment
Device.
Further, the outside of the chamber wall, which is provided with the outside of zone of heating, zone of heating, is provided with heat-insulation layer.
Further, it is provided with the upper end cover at upper end sealing cushion for cover, bottom end cover and is provided with lower end sealing cushion for cover, constant pressure
Piston is externally provided with constant pressure piston packing.
Effective effect of the present utility model is：
1) constant volume of the present utility model-constant pressure mixing theory combustion simulation experimental rig, can be to constant volume-constant pressure mixing theory of internal combustion engine
Combustion process carries out related research；
2) the utility model can coordinate visualization device to be used to study soot and NOx in constant volume-constant pressure mixing theory combustion process
Deng the formation mechanism and combustion process of emission；
3) the utility model can be used for research thermodynamic parameter (such as：Air-fuel ratio, temperature and pressure), ignition parameter (such as：
Ignition location, ignition energy, time of ignition etc.) combustion process of being burnt to constant volume-constant pressure mixing theory influence；
4) it is of the present utility model to can be used for entering constant volume-constant pressure mixing theory burning combustion process of conventional fuel, substitute fuel
The related theoretical research of row.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model constant volume-constant pressure mixing theory Constant Volume Bomb.
Fig. 2 is the utility model constant volume-constant pressure mixing theory Constant Volume Bomb control system schematic diagram.
Fig. 3 is to be schemed using the utility model constant volume-P-V obtained by constant pressure mixing theory Constant Volume Bomb.
In figure：1- air inlet pipe；2- intake valves；3- pressure sensors；4- spark plugs；5- bolts of cover；6- air bleeding valves；7- is arranged
Tracheae；8- upper end covers；9- upper ends sealing cushion for cover；10- chamber walls；11- zones of heating；12- heat-insulation layers；13- constant voltage rooms；14- overflows
Tracheae；15- pressure limiting valves；16- constant pressure intake valves；17- constant pressure air inlet pipe；18- bottom end covers；19- lower ends sealing cushion for cover；20- positions
Sensor；21- constant pressure pistons；22- constant pressure piston packings；23- back-up rings；24- combustion chambers.
Embodiment
The utility model is described in further details with specific embodiment below in conjunction with the accompanying drawings.As shown in Figure 1：A kind of point
Combustion constant volume-constant pressure mixing theory Constant Volume Bomb, includes the chamber wall 10 of tubular, and the top of chamber wall 10 is provided with upper end
Lid 8, bottom is provided with bottom end cover 18, and is fixed with end cover connecting bolt 5；Its middle part is provided with constant pressure piston 21.Set on upper end cover 8
There are air inlet pipe 1, blast pipe 7, pressure sensor 3 and spark plug 4, bottom end cover 18 is provided with constant pressure air inlet pipe 17 and excessive tracheae 14.
And be provided with air inlet pipe 1 on intake valve 2, blast pipe 7 air bleeding valve 6 is installed；Air bleeding valve 6 is installed on blast pipe 7；Constant pressure is entered
Constant pressure intake valve 16 is installed on tracheae 17.
Wherein, petard plug 4 also can be replaced fuel injector.
Space inside chamber wall 10 is divided into the combustion chamber 24 on top and the constant voltage room 13 of bottom by constant pressure piston 21, its
Top is provided with the back-up ring 23 being fixed on the madial wall of chamber wall 10, and position sensor 20 is fixedly installed in lower section.
Also include control experimental provision operation ECU, as shown in Fig. 2 pressure sensor 3, spark plug 4 and position sensor
20, and be arranged in air inlet pipe 1 intake valve 2, be arranged on blast pipe 7 air bleeding valve 6, be arranged in constant pressure air inlet pipe 17
Constant pressure intake valve 16 and the pressure limiting valve 15 that is arranged on excessive tracheae 14 be all connected to ECU.
The outside of the chamber wall 10 of the present embodiment is provided with zone of heating 11, and the outside of zone of heating 11 is provided with heat-insulation layer 12.
Upper end sealing cushion for cover 9 is provided with enough obturation effects, the upper end cover 8 of the present embodiment in order to reach, air inlet pipe 1,
The spark plug 4 of pressure sensor 3 and sequentially pass through upper end cover 8 and upper end sealing cushion for cover 9 is communicated with combustion chamber 24；Set at bottom end cover 18
There is lower end sealing cushion for cover 19, excessive tracheae 14 and constant pressure air inlet pipe 17 sequentially pass through bottom end cover 18 and lower end sealing cushion for cover 19 and constant pressure
Room 13 is communicated；Constant pressure piston 21 is externally provided with constant pressure piston packing 22.
The experimental rig of the present embodiment is controlled by ECU, and specific control method is as follows：
1) constant pressure intake valve 16 is opened, pressurize gas is filled with into constant voltage room 13, air pressure in constant voltage room 13 is constantly increased；
2) when rising under promotion of the constant pressure piston 21 in pressurize gas at back-up ring 23, by the first initial body of combustion chamber 24
Product is denoted as V1；
3) when the gas pressure of constant voltage room 13 reaches the voltage limiting value P of settingLimitAfterwards, pressure limiting valve 15 is opened, is made in constant voltage room 13
Atmospheric pressure value is maintained at constant PLimit；
4) intake valve 2 is opened, combustion mixture is filled with combustion chamber 24；
5) intake valve 2 is closed after inflation is finished, the combustion mixture in combustion chamber 24 is lighted using spark plug 4, start with
Volume V1Carry out constant volume burning；
6) when the pressure P that pressure sensor 3 is measured in combustion chamber 24 rises to P ＞ PLimitWhen, close constant pressure intake valve 16 and stop
Only inflated into constant voltage room 13, and open pressure limiting valve 15, moved down constant pressure piston 21, proceed by constant pressure combustion；
7) distance, delta S is moved down from back-up ring 23 by the measurement constant pressure of position sensor 20 piston 21, and calculates burning
The current volume V of room 24；V calculation formula is：
Wherein, D is the diameter of combustion chamber；
8) after the completion of burning, open intake valve 2 and be filled with fresh air, and open the discharge waste gas of air bleeding valve 6.
In experimentation, pressure sensor 3 measures the pressure in combustion chamber 24 in real time, and signal is transmitted into ECU；ECU roots
According to the displacement signal of position sensor 20, the real-time volume V of combustion chamber 24 is calculated according to above-mentioned formula；ECU is by combustion chamber 24
Real-time volume V and real-time pressure P correspond be transmitted to display；Display is according to the real-time volume V of combustion chamber 24 and in real time
Pressure P can draw out the P-V figures of constant volume-constant pressure mixing theory burning of gas combustion process in combustion chamber 24.Constant volume-constant pressure combustion
P-V figures it is as shown in Figure 3.
If spark plug is replaced with into fuel injector, above-mentioned steps 4) in be filled with the combustion mixture of combustion chamber 24 and need to replace with newly
Fresh air.And step 5) in " combustion mixture in combustion chamber 24 is lighted using spark plug 4 " and then replaced with using fuel injector spray
Enter fuel, the purpose of compression-ignited constant volume-constant pressure mixing theory burning can be achieved in such replacement.
Claims (4)
1. a kind of constant volume-constant pressure mixing theory Constant Volume Bomb, it is characterised in that the chamber wall including tubular（10）, combustion
Burn locular wall（10）Top is provided with upper end cover（8）, bottom is provided with bottom end cover（18）, middle part is provided with constant pressure piston（21）；Upper end cover
（8）It is provided with air inlet pipe（1）, blast pipe（7）, pressure sensor（3）And spark plug（4）, bottom end cover（18）Enter provided with constant pressure
Tracheae（17）With excessive tracheae（14）；Constant pressure piston（21）By chamber wall（10）Internal space is divided into the combustion chamber on top（24）
With the constant voltage room of bottom（13）, its top, which is provided with, is fixed on chamber wall（10）Back-up ring on madial wall（23）, lower section is fixed
Position sensor is set（20）；Also include control experimental provision operation ECU, pressure sensor（3）, spark plug（4）And position
Sensor（20）, and it is arranged on air inlet pipe（1）On intake valve（2）, be arranged on blast pipe（7）On air bleeding valve（6）, set
In constant pressure air inlet pipe（17）On constant pressure intake valve（16）Be arranged on excessive tracheae（14）On pressure limiting valve（15）It is all connected to
ECU。
2. constant volume according to claim 1-constant pressure mixing theory Constant Volume Bomb, it is characterised in that by the spark
Plug（4）Replace with fuel injector and constitute compression-ignited constant volume-constant pressure mixing theory Constant Volume Bomb.
3. constant volume according to claim 1 or 2-constant pressure mixing theory Constant Volume Bomb, it is characterised in that the burning
Locular wall（10）Outside be provided with zone of heating（11）, zone of heating（11）Outside is provided with heat-insulation layer（12）.
4. constant volume according to claim 1 or 2-constant pressure mixing theory Constant Volume Bomb, it is characterised in that the upper end
Lid（8）Place is provided with upper end sealing cushion for cover（9）, bottom end cover（18）Place is provided with lower end sealing cushion for cover（19）, constant pressure piston（21）Peripheral hardware
There is constant pressure piston packing（22）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720040710.6U CN206496906U (en) | 2017-01-13 | 2017-01-13 | A kind of constant volume constant pressure mixing theory Constant Volume Bomb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720040710.6U CN206496906U (en) | 2017-01-13 | 2017-01-13 | A kind of constant volume constant pressure mixing theory Constant Volume Bomb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206496906U true CN206496906U (en) | 2017-09-15 |
Family
ID=59802187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720040710.6U Expired - Fee Related CN206496906U (en) | 2017-01-13 | 2017-01-13 | A kind of constant volume constant pressure mixing theory Constant Volume Bomb |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206496906U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840684A (en) * | 2017-01-13 | 2017-06-13 | 西华大学 | A kind of constant volume constant pressure mixing theory Constant Volume Bomb and its control method |
| CN108152044A (en) * | 2018-01-05 | 2018-06-12 | 西华大学 | The device and method that simulation two-step supercharging pressure side/whirlpool end bypass influences spray characteristics |
-
2017
- 2017-01-13 CN CN201720040710.6U patent/CN206496906U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840684A (en) * | 2017-01-13 | 2017-06-13 | 西华大学 | A kind of constant volume constant pressure mixing theory Constant Volume Bomb and its control method |
| CN108152044A (en) * | 2018-01-05 | 2018-06-12 | 西华大学 | The device and method that simulation two-step supercharging pressure side/whirlpool end bypass influences spray characteristics |
| WO2019134645A1 (en) * | 2018-01-05 | 2019-07-11 | 西华大学 | Device and method for simulating effect of two-stage supercharging pressure end or turbo end bypass on spray characteristics |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170915 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |