CN205206943U - Singly overlap fuel supply system suitable for pre -burning cell -type natural gas engine - Google Patents
Singly overlap fuel supply system suitable for pre -burning cell -type natural gas engine Download PDFInfo
- Publication number
- CN205206943U CN205206943U CN201521048167.1U CN201521048167U CN205206943U CN 205206943 U CN205206943 U CN 205206943U CN 201521048167 U CN201521048167 U CN 201521048167U CN 205206943 U CN205206943 U CN 205206943U
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- CN
- China
- Prior art keywords
- wall
- natural gas
- precombustion
- precombustion chamber
- chamber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
An object of the utility model is to provide a singly overlap fuel supply system suitable for pre -burning cell -type natural gas engine, including gas collecting chamber, natural gas gas bomb, compression cylinder, operation cylinder, operation cylinder includes antechamber and the main room of firing, the antechamber includes antechamber inner wall and pre -burning outdoor wall, it is outside that pre -burning outdoor wall is located the antechamber inner wall, pre -burning outdoor wall gives first place to the outside and fires the room, set up natural gas nozzle and spark plug in the antechamber, set up inner wall communicating pipe on the antechamber inner wall, set up outer wall communicating pipe on the pre -burning outdoor wall, thereby steerable its of wall connection rotatoryly for pre -burning outdoor wall makes the solenoid valve that inner wall communicating pipe and outer wall communicating pipe communicated with each other or broke off in the antechamber, the gas collecting chamber entrance point sets up the air throttle, the gas collecting chamber exit end communicates main fire room and blender respectively, the blender communicates natural gas gas bomb and compression cylinder respectively, compression cylinder intercommunication natural gas nozzle. The utility model discloses only rely on one set of fuel supply system can realize stratified combustion.
Description
Technical field
The utility model relates to a kind of internal-combustion engine, specifically natural gas engine.
Background technique
Along with internal-combustion engine is in the extensive use of Vehicle Engineering, Marine engineering, its ecological environmental pollution brought and petroleum resources are in short supply becomes our times various countries problem demanding prompt solution.Many countries begin one's study and are applied to the substitute fuel of conventional engines.Wherein, natural gas, because is that heating value is high, the features such as clean and rich reserves of discharging are subject to extensive concern.
For natural gas engine peculiar to vessel, because cylinder diameter is large, the flame propagation time is relatively long, easily far-end detonation occurs, generally adopts lean combustion (φ a>1) mode to reduce the possibility of detonation.But when mixed gas is rarer, rate of burning reduces, flame quenching or some work even may occur and circulate the phenomenon of misfiring, cause specific fuel consumption to rise, hydrocarbon (HC) discharges sharply to be increased.
In order to solve the problem, researcher is had to propose to adopt the natural gas engine with precombustion chamber, realize the stratified mixture combustion of rock gas, namely precombustion chamber this more among a small circle in formed Over-rich mixture, and main combustion chamber this in a big way in form weak mixture, reduce while realizing high-efficiency cleaning burning and the possibility of detonation occur.But current precombustion natural gas engine is in order to form the mixed gas of variable concentrations, general employing two cover fuel supplying devices, respectively to precombustion chamber and main combustion chamber supply fuel, system architecture and control procedure are comparatively complicated, and with high costs.
Summary of the invention
The purpose of this utility model is to provide a kind of list cover fuel supply system being applicable to precombustion natural gas engine only relying on a set of fuel supply system to realize stratified mixture combustion.
The purpose of this utility model is achieved in that
A kind of list cover fuel supply system being applicable to precombustion natural gas engine of the utility model, it is characterized in that: comprise air collecting chamber, natural gas storage pot holding, compression cylinder, working cylinder, described working cylinder comprises precombustion chamber and main combustion chamber, precombustion chamber comprises precombustion chamber inwall and precombustion chamber outer wall, it is outside that precombustion chamber outer wall is positioned at precombustion chamber inwall, precombustion chamber outer wall outside is main combustion chamber, natural gas nozzle and spark plug are set in precombustion chamber, precombustion chamber inwall is arranged inwall connecting pipe, precombustion chamber outer wall is arranged outer wall connecting pipe, the connection of precombustion chamber inwall can control it and rotates relative to precombustion chamber outer wall thus make the solenoid valve that inwall connecting pipe and outer wall connecting pipe communicate or disconnect, air collecting chamber entrance point arranges closure, air collecting chamber outlet end is communicated with main combustion chamber and mixer respectively, mixer is communicated with natural gas storage pot holding and compression cylinder respectively, compression cylinder is communicated with rock gas nozzle.
The utility model can also comprise:
1, when described working cylinder is in aspirating stroke, compression cylinder is in compression stroke.
2, in compression cylinder, the empty equivalent proportion of the combustion of mixed gas is greater than 1.
Advantage of the present utility model is:
1, supply rock gas by precombustion chamber passage to main combustion chamber, whole cluster engine only has a set of fuel supplying device, under the prerequisite realizing rock gas stratified mixture combustion, reduce construction cost.
2, the rich mixture of rock gas and air is after compression cylinder, and pressure, temperature raise, and are more easily lighted, reduce ignition energy, can improve spark plug life in precombustion chamber.
3, achieved the subregion of mixture strength by rotary switch type precombustion chamber, the control of firing empty equivalent proportion is more accurate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is pre-combustion chamber schematic diagram.
Embodiment
Below in conjunction with accompanying drawing citing, the utility model is described in more detail:
Composition graphs 1 ~ 2, the utility model is a kind of is applicable to the list cover fuel supply system of precombustion natural gas engine, comprises two kinds of different cylinders and a kind of rotary switch type precombustion chamber; Cylinder comprises working cylinder 4 and compression cylinder 5; Precombustion chamber comprises fixing outer wall, rotatable inwall, rock gas nozzle, electric plug and connecting passage.The cylinder cap of working cylinder is provided with precombustion chamber, and without precombustion chamber on the cylinder cap of compression cylinder; The outlet valve of compression cylinder is connected with the nozzle in working cylinder precombustion chamber by pipeline, nozzle is established solenoid valve to control time for spraying.Without combustion phenomena in compression cylinder, only compression heating is carried out to mixed gas.Need, by phase control, make the compression stroke of cylinder 5 corresponding with the aspirating stroke of cylinder 4.
Precombustion chamber outer wall 12 is fixed in cylinder head, and inwall 11 is rotatable.Outer wall 12 and inwall 11 are equipped with connecting passage, when inside and outside wall passage is communicated with main combustion chamber precombustion chamber during correspondence.Inwall 11 controlled by solenoid valve, controls the break-make relation of precombustion chamber and main combustion chamber by spinning movement.
Cylinder block is divided into working cylinder and compression cylinder, and the empty equivalent proportion of the combustion controlled in compression cylinder by closure and gas discharge valve is greater than 1.The cylinder cap of working cylinder is provided with precombustion chamber, and without precombustion chamber on the cylinder cap of compression cylinder.The suction valve of working cylinder is connected with air collecting chamber by intake manifold, and the suction valve of compression cylinder is connected with mixer.The outlet valve of compression cylinder is connected with the nozzle in working cylinder precombustion chamber by pipeline, nozzle is established solenoid valve to control time for spraying.
Precombustion chamber wall is divided into inside and outside wall, and outer wall is fixed in cylinder head, and inwall is rotatable, and the bottom at circular arc position, precombustion chamber bottom is provided with connecting passage.Inwall controlled by solenoid valve, can realize being communicated with of precombustion chamber and main combustion chamber, isolated.
The firing tip of spark plug is arranged on the neutral position of described precombustion chamber.
Air enters air collecting chamber 2 through closure 1, and air collecting chamber 2 is connected with working cylinder 4, mixer 7.Rock gas is supplied by gas holder 8, controls its flow by valve 3, mixes, then enter compression cylinder 5 after entering mixer 7 with air.The empty equivalent proportion of combustion controlling to enter the mixed gas of compression cylinder 5 by closure 1 and flow control valve 3 is greater than 1.Without ignition mechanism in compression cylinder 5, only carry out compression heating to mixed gas, in compression cylinder 5, outlet valve is connected with the precombustion chamber 6 of working cylinder 4 by pipeline, and makes the compression stroke of compression cylinder 5 corresponding with the intake stroke of working cylinder 4 by phase control.
As shown in Figure 2, precombustion chamber comprises rock gas nozzle 9, spark plug 10, rotates inwall 11, fixing outer wall 12 and connecting passage 13.Wherein inwall 11 and outer wall 12 are equipped with connecting passage, when inside and outside wall passage is communicated with main combustion chamber precombustion chamber during correspondence.Inwall 11 controlled by solenoid valve, controls the break-make relation of precombustion chamber and main combustion chamber by spinning movement.When working cylinder 4 is in aspirating stroke, compression cylinder 5 is just in time in compression stroke, opened by electromagnetic valve rock gas nozzle 9, rotate inwall 11 makes precombustion chamber be communicated with main combustion chamber simultaneously, rich mixture is under the High Pressure of cylinder 5, enter main combustion chamber by connecting passage 13, and mix to form weak mixture with air.After the suction valve of working cylinder 4 cuts out, close the connecting passage 13 between gas injector 9 and main, precombustion chamber simultaneously, layering isolation is carried out to the rich mixture in precombustion chamber and the weak mixture in main combustion chamber.When in working cylinder 4 during piston arrives near top dead center, lighting a fire by controlling electric plug 10, rotating inwall 11 by solenoid valve simultaneously, opening the connecting passage 13 between master, precombustion chamber, the flame in precombustion chamber is made to enter main combustion chamber, the rock gas that ignites/air homogeneous weak mixture.Main combustion chamber flame to external diffusion, is conducive to the advantage giving full play to lean combustion centered by precombustion chamber, suppresses pinking, reduces natural gas engine and pollutes.
Claims (3)
1. one kind is applicable to the list cover fuel supply system of precombustion natural gas engine, it is characterized in that: comprise air collecting chamber, natural gas storage pot holding, compression cylinder, working cylinder, described working cylinder comprises precombustion chamber and main combustion chamber, precombustion chamber comprises precombustion chamber inwall and precombustion chamber outer wall, it is outside that precombustion chamber outer wall is positioned at precombustion chamber inwall, precombustion chamber outer wall outside is main combustion chamber, natural gas nozzle and spark plug are set in precombustion chamber, precombustion chamber inwall is arranged inwall connecting pipe, precombustion chamber outer wall is arranged outer wall connecting pipe, the connection of precombustion chamber inwall can control it and rotates relative to precombustion chamber outer wall thus make the solenoid valve that inwall connecting pipe and outer wall connecting pipe communicate or disconnect, air collecting chamber entrance point arranges closure, air collecting chamber outlet end is communicated with main combustion chamber and mixer respectively, mixer is communicated with natural gas storage pot holding and compression cylinder respectively, compression cylinder is communicated with rock gas nozzle.
2. a kind of list cover fuel supply system being applicable to precombustion natural gas engine according to claim 1, is characterized in that: when described working cylinder is in aspirating stroke, compression cylinder is in compression stroke.
3. a kind of list cover fuel supply system being applicable to precombustion natural gas engine according to claim 1 and 2, is characterized in that: in compression cylinder, the empty equivalent proportion of the combustion of mixed gas is greater than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048167.1U CN205206943U (en) | 2015-12-11 | 2015-12-11 | Singly overlap fuel supply system suitable for pre -burning cell -type natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048167.1U CN205206943U (en) | 2015-12-11 | 2015-12-11 | Singly overlap fuel supply system suitable for pre -burning cell -type natural gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205206943U true CN205206943U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521048167.1U Withdrawn - After Issue CN205206943U (en) | 2015-12-11 | 2015-12-11 | Singly overlap fuel supply system suitable for pre -burning cell -type natural gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205206943U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422256A (en) * | 2015-12-11 | 2016-03-23 | 哈尔滨工程大学 | Single fuel supply system suitable for precombustion chamber type natural gas engine |
-
2015
- 2015-12-11 CN CN201521048167.1U patent/CN205206943U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422256A (en) * | 2015-12-11 | 2016-03-23 | 哈尔滨工程大学 | Single fuel supply system suitable for precombustion chamber type natural gas engine |
| CN105422256B (en) * | 2015-12-11 | 2017-10-31 | 哈尔滨工程大学 | A kind of single set fuel feed system suitable for precombustion natural gas engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160504 Effective date of abandoning: 20171031 |