CN205297772U - Sprayer suitable for direct injection gaseous fuel - Google Patents
Sprayer suitable for direct injection gaseous fuel Download PDFInfo
- Publication number
- CN205297772U CN205297772U CN201620030331.4U CN201620030331U CN205297772U CN 205297772 U CN205297772 U CN 205297772U CN 201620030331 U CN201620030331 U CN 201620030331U CN 205297772 U CN205297772 U CN 205297772U
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- China
- Prior art keywords
- valve body
- ejector
- valve
- cavity
- outer needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a sprayer suitable for direct injection gaseous fuel, including spraying controlling means, atmospheric pressure controlling means and injection apparatus, spray controlling means including control cavity and control chamber spring, control chamber spring one end connection control cavity bottom, the rubber cushion of other end connection control cavity oral area is equipped with the pressure regulating hole of connecting atmospheric pressure controlling means on the control cavity, injection apparatus includes injector body and two nozzle valve, the gas burner is established to injector body one end, and the sprayer lid is connected to the other end, and the gas suction hole is established to the lateral wall, sprayer bellied outer fringe of lid and rubber cushion fixed connection, two nozzle valve include that interior nozzle valve and inseparable suit are connected to rubber cushion in its outside outer nozzle valve, interior nozzle valve one end, and the other end extends to the gas burner, and outer nozzle valve one end is connected with the sprayer lid. The utility model discloses help improving the utilization ratio of gas, more the fuel saving to can ensure to spray normally, and be favorable to improving the performance of engine, reduce HC and discharge.
Description
Technical field
This utility model relates to gaseous fuel spraying technique field, particularly to a kind of ejector suitable in in-cylinder direct-jet gaseous fuel.
Background technology
Gaseous fuel is all the hydro carbons organic-fuel based on little molecule mostly, and this micromolecular organic-fuel easily forms uniform gaseous mixture with air, mixed gas quality height, has the burning completely utilizing gaseous mixture. Therefore, electromotor uses this class A fuel A to contribute to meeting the Abgasgesetz of increasingly stringent. Simultaneously because the price of gaseous fuel is lower than traditional fuel, therefore there is good economic benefit, be day by day subject to the welcome of numerous car owners.
The gaseous propellant engine adopting intake port injection can occupy the volume of a part due to combustion gas, therefore can affect the charging efficiency of electromotor, and the dynamic property of electromotor can be subject to certain impact. Meanwhile, adopting intake port injection to be also unfavorable for adopting the realization of some special combustion modes, therefore in-cylinder direct-jet is the inevitable development trend of gaseous propellant engine. The lean mode such as stratified combustion can be realized after in-cylinder direct-jet, be conducive to improving the thermal efficiency of electromotor, improve electromotor economy. And the nozzle of direct-injection gas engine in cylinder is one of key components and parts. Owing to gaseous fuel is typically all with hig pressure storage, it does not have independent pressurized equipment, therefore can not adopt the mode of low voltage control high pressure as diesel oil, namely can not have oiling. Because, once gas injection creates the gas of low pressure, then this portion gas cannot be carried out owing to can not carry out inner cylinder direct injection utilizing or being inconvenient to utilize. Therefore combustion gas can not be had by blood pressure lowering in gas ejector work process can not to be participated in burning, and therefore its control mode to be optimized design.
Utility model content
It is in that to provide one fuel and control to be separated for the problems referred to above the purpose of this utility model, is effectively applicable to the ejector of in-cylinder direct-jet gaseous fuel more economically. Technical scheme is as follows:
A kind of ejector suitable in in-cylinder direct-jet gaseous fuel, including ejection control device, Pneumatic controller and injection apparatus;Ejection control device includes the control cavity of tubbiness and controls chamber spring, control chamber spring one end and be fixedly attached to the bottom controlling cavity, the other end is fixedly attached to seal and is arranged at the rubber mount controlling cavity oral area, controlling to be additionally provided with regulator hole on cavity, regulator hole is connected to Pneumatic controller; Injection apparatus includes injector body and crosspointer valve body; Injector body is cylindric, and one end is provided with gas nozzle, and the other end is fixedly connected with ejector lid, and sidewall is additionally provided with combustion gas inlet hole; Ejector lid is provided with passage, and the outer rim of its projection is fixed with rubber mount and is connected; Crosspointer valve body includes inner needle valve body and is closely sleeved on its outside outer needle-valve body, inner needle valve body one end is connected to rubber mount through ejector lid, the other end extends to gas nozzle, and outer needle-valve body one end is connected with ejector lid by outer needle valve spring, and the other end is used for sealing gas nozzle.
Further, described Pneumatic controller includes electromagnetic valve, controls the application valve body of valve casing and chamber on its interior, and application valve body one end is connected to electromagnetic valve through controlling valve casing, and is additionally provided with control valve spring between this end and control valve casing; Control the chamber within valve casing to connect with described regulator hole; Control valve casing is additionally provided with transfer port and aspirating hole.
Further, described control valve casing two ends are additionally provided with control valve casing pressure regulating hole.
Further, being additionally provided with cavity one section protruding in described outer needle-valve body, the external wall of described inner needle valve is provided with flange at cavity place.
Further, being additionally provided with outer needle-valve body guide holder inside described ejector lid, described outer needle-valve body is connected on outer needle-valve body guide holder.
Further, described rubber mount running through and is fixed with connector, described control chamber spring and inner needle valve body are all connected to described connector.
The beneficial effects of the utility model are:
1, this utility model is completely isolated to the control of ejector and fuel, wastes because of controlling thus without there being any fuel, it is not required that have the backflow recovery and processing system of fuel;
2, this utility model utilizes vacuum to open injection, then can ensure that injection without exception when without vacuum, it is ensured that electromotor does not spray fuel when not running;
3, this utility model have employed crosspointer valve arrangement, and internal needle-valve can be squeezed into the fuel within spray orifice completely in cylinder after completing injection, is conducive to making all fuel be involved in burning, is also beneficial to reduce the HC discharge of electromotor;
4, this utility model utilizes two-position three-way valve control gas to control the mode of needle-valve again, reduces the requirement to electromagnetic valve compared with directly driving needle-valve with electromagnetic valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model ejector.
Fig. 2 is this utility model ejector spray regime schematic diagram.
In figure: 1, injector body; 2, rubber mount; 3, cavity is controlled; 4, chamber spring is controlled; 5, regulator hole; 6, valve casing is controlled; 61, transfer port; 62, aspirating hole; 7, electromagnetic valve; 8, control valve spring; 9, application valve body; 10, ejector lid; 11, ejector lid passage; 12, combustion gas inlet hole; 13, outer needle valve spring; 14, inner needle valve body; 15, outer needle-valve body; 16, connector; 17, outer needle-valve body guide holder; 18, gas nozzle.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described further.
As it is shown in figure 1, the ejector being applicable to in-cylinder direct-jet gaseous fuel described by the present embodiment, including injection apparatus, ejection control device and three parts of Pneumatic controller.
Injection apparatus includes injector body 1 and crosspointer valve body; Injector body 1 is cylindric, and one end is provided with gas nozzle 18, and the other end is fixedly connected with ejector lid 10, and sidewall is additionally provided with combustion gas inlet hole 12; Ejector lid 10 is provided with passage 11, and the outer rim of its projection is fixed with rubber mount 2 and is connected; Crosspointer valve body includes inner needle valve body 14 and is closely sleeved on its outside outer needle-valve body 15, inner needle valve body 14 one end is connected to rubber mount 2 through ejector lid 10, the other end extends to gas nozzle 18, outer needle-valve body 15 one end is connected with ejector lid 10 by outer needle valve spring 13, and the other end is used for sealing gas nozzle 18.
Injector body 1 is used for installing crosspointer valve body, and accesses fuel gas by combustion gas inlet hole 12. Crosspointer valve body is made up of inner needle valve body 14 and the outer needle-valve body 15 being set on inner needle valve body. Injector body 1 is hollow multistage cylinder, and its upper end open is relatively big, is the entrance installing part, and gas nozzle 18 diameter of its lower end can be set according to the requirement of electromotor.
The ejector lid 10 that injector body 1 upper end is arranged is used for installing location inner needle valve body 14 and outer needle-valve body 15, and positions outer needle valve spring 13. Ejector lid 10 be provided centrally with inner needle valve body pilot hole and outer needle-valve body guide holder 17, there is guide-localization function. Inner needle valve body 14 and inner needle valve body pilot hole are slidably matched, and outer needle-valve body 15 is connected on outer needle-valve body guide holder 17, is slidably matched with outer needle-valve body guide holder 17. Inner needle valve body pilot hole is perpendicular to ejector lid 10, and the axial line of its axial line and ejector lid 10 is same straight line. Outer needle-valve body guide holder 17 is torus, and the axial line of its axial line and ejector lid 10 is same straight line. Being provided with outer needle valve spring 13 between outer needle-valve body 15 and ejector lid 2, the effect of outer needle valve spring 13 is to make outer needle-valve body 15 return and compress outer needle-valve body 15, makes outer needle-valve body close gas injection hole. Ejector lid 10 offers passage 11, is used for allowing combustion gas lead to below rubber mount, it is achieved balance pressure and driving needle-valve body function.
The stable cavity that cavity is fuel formed between outer needle-valve body 15 and the inwall of injector body 1, the inside is filled with fuel, ready for injection at any time. Outer needle-valve body 15 is a hollow multistage cylinder, and its lower end is approximately cone, and its function is to close combustion gas, makes ejector stop injection fuel. Inner needle valve body 14 is flanged cylinder, and its effect is to drive the motion of outer needle-valve body, and when taking a seat, cylinder is all clamp-oned in the combustion gas in spray-hole and nozzle. Inner needle valve body 14 is arranged in outer needle-valve body 15, is additionally provided with cavity one section protruding in outer needle-valve body 15, and inner needle valve body 14 outer wall has been provided with lobe at cavity place, and such as flange, boss is in cavity.
Ejection control device includes the control cavity 3 of tubbiness and controls chamber spring 4, control spring 4 one end, chamber and be fixedly attached to the bottom controlling cavity 3, the other end is fixedly attached to seal and is arranged at the rubber mount 2 controlling cavity 3 oral area, controlling to be additionally provided with regulator hole 5 on cavity 3, regulator hole 5 is connected to Pneumatic controller. Running through on rubber mount 2 and be fixed with connector 16, described control chamber spring 4 and inner needle valve body 14 are all connected to described connector 16.
Controlling cavity 3 Main Function is inventory of gas, in the course of the work, control the gas atmosphere in cavity 3 and press pre-set control programs change, the air pressure of change and spring force are made a concerted effort so that rubber mount 2 deforms, in rubber mount 2 deformation process, the change in displacement of its center is maximum, and inner needle valve body 14 can be made to move maximum displacement.
Rubber mount 2 operates inner needle valve body 14 under the effect of pressure differential, also fuel is enclosed in inside injector body simultaneously. The connector 16 that rubber mount 2 center is installed is bolt arrangement, or rivet, it is possible to clamping is on rubber mount 2. The lower end of connector is fixing with inner needle valve body 14 upper end to be connected, and the upper end being simultaneously connected with part connects control chamber spring 4.
Control chamber spring 4 mainly by compressing connector 16 and then compressing inner needle valve body 14, and control chamber spring 4 as return after inner needle valve body 14 rises.
The effect of Pneumatic controller is to regulate the air pressure in spraying fire cavity 3. Pneumatic controller selects two-bit triplet reversal valve. This two-bit triplet reversal valve includes a control valve casing 6, is provided with application valve body 9 in this control valve casing 6, controls to be provided with electromagnetic valve 7 outside valve casing, and electromagnetic valve 7 connects application valve body 9; Control valve spring 8 is installed between application valve body 9 and the electromagnetic valve installation end controlling valve casing 6, controls the chamber within valve casing 6 and connect with described regulator hole 5; Control valve casing is additionally provided with transfer port 61 and aspirating hole 62; Control valve casing two ends and be provided with control valve casing pressure regulating hole. It is different that application valve body 9 controls the pressure in cavity 3 when different positions, it is possible to being atmospheric pressure or the negative pressure of engine vacuum pump offer, the motion of application valve body 9 is controlled according to the instruction of engine control system by electromagnetic valve 7. Electromagnetic valve 7 is energized, and application valve body 9 moves to electromagnetic valve 7 installation end, electromagnetic valve 7 power-off, application valve body 9 return under the effect of control valve spring 8.
Under ejector closed mode, the transfer port 61 of Pneumatic controller is opened, and makes control cavity 3 and atmosphere, or bigger pressure communicates. Now rubber mount 2 upper surface is subject to an atmospheric pressure or bigger pressure, and its active force is downward; Being subject to gaseous-pressure below rubber mount 2, its active force is upwards. The pressure of controlled chamber, the upper end spring 4 of inner needle valve body 14, its active force is downward; The lower surface of inner needle valve body 14 is also by the pressure of gas in the jar simultaneously, and it is upwardly directed. When downward make a concerted effort more than upwards when making a concerted effort, inner needle valve body 14 is down pressed together with rubber mount 2, and therefore the flange lower surface of inner needle valve body 14 and outer needle-valve body 15 force together. Meanwhile, the active force of outer needle valve spring 13 is downward all the time, and under the effect made a concerted effort, ejector is closed.
Ejector is made to open, it is accomplished by breaking the dynamic balance of closed mode obviously, due to the force direction and size and combustion gas that control chamber spring 4 active force and size is not easy or cannot change, therefore can only be the gas pressure changing rubber mount 2 upper surface. By the air pressure in the application valve body 9 of control Pneumatic controller, being opened by the aspirating hole 62 of Pneumatic controller, the pressure controlled in cavity 3 drops to negative pressure. Force direction and the size of rubber mount 2 just change, under the effect made a concerted effort, inner needle valve body 14 moves upward, the top edge of the flange of inner needle valve after certain displacement that moves contacts with outer needle-valve, pulls outer needle-valve 15 to move upwardly together, and thus ejector opens injection work. The schematic diagram of spray regime is as shown in Figure 2.
Claims (6)
1. the ejector being applicable to in-cylinder direct-jet gaseous fuel, it is characterised in that include ejection control device, Pneumatic controller and injection apparatus; Ejection control device includes the control cavity (3) of tubbiness and controls chamber spring (4), control spring (4) one end, chamber and be fixedly attached to the bottom controlling cavity (3), the other end is fixedly attached to sealing and is arranged at the rubber mount (2) controlling cavity (3) oral area, controlling to be additionally provided with regulator hole (5) on cavity (3), regulator hole (5) is connected to Pneumatic controller;Injection apparatus includes injector body (1) and crosspointer valve body; Injector body (1) is cylindric, and one end is provided with gas nozzle (18), and the other end is fixedly connected with ejector lid (10), and sidewall is additionally provided with combustion gas inlet hole (12); Ejector lid (10) is provided with passage (11), and the outer rim of its projection is fixed with rubber mount (2) and is connected; Crosspointer valve body includes inner needle valve body (14) and is closely sleeved on its outside outer needle-valve body (15), inner needle valve body (14) one end is connected to rubber mount (2) through ejector lid (10), the other end extends to gas nozzle (18), outer needle-valve body (15) one end is connected with ejector lid (10) by outer needle valve spring (13), and the other end is used for sealing gas nozzle (18).
2. the ejector suitable in in-cylinder direct-jet gaseous fuel according to claim 1, it is characterized in that, described Pneumatic controller includes electromagnetic valve (7), controls the application valve body (9) of valve casing (6) and chamber on its interior, application valve body (9) one end is connected to electromagnetic valve (7) through controlling valve casing (6), and is additionally provided with control valve spring (8) between this end and control valve casing (6); The chamber controlling valve casing (6) internal connects with described regulator hole (5); Control valve casing (6) is additionally provided with transfer port (61) and aspirating hole (62).
3. the ejector suitable in in-cylinder direct-jet gaseous fuel according to claim 2, it is characterised in that described control valve casing (6) two ends are additionally provided with control valve casing pressure regulating hole.
4. the ejector suitable in in-cylinder direct-jet gaseous fuel according to claim 1, it is characterised in that being additionally provided with cavity one section protruding in described outer needle-valve body (15), described inner needle valve body (14) outer wall is provided with flange at cavity place.
5. the ejector suitable in in-cylinder direct-jet gaseous fuel according to claim 1, it is characterized in that, described ejector lid (10) inner side is additionally provided with outer needle-valve body guide holder (17), and described outer needle-valve body (15) is connected on outer needle-valve body guide holder (17).
6. the ejector suitable in in-cylinder direct-jet gaseous fuel according to claim 1, it is characterized in that, running through on described rubber mount (2) and be fixed with connector (16), described control chamber spring (4) and inner needle valve body (14) are all connected to described connector (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620030331.4U CN205297772U (en) | 2016-01-13 | 2016-01-13 | Sprayer suitable for direct injection gaseous fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620030331.4U CN205297772U (en) | 2016-01-13 | 2016-01-13 | Sprayer suitable for direct injection gaseous fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297772U true CN205297772U (en) | 2016-06-08 |
Family
ID=56475092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620030331.4U Withdrawn - After Issue CN205297772U (en) | 2016-01-13 | 2016-01-13 | Sprayer suitable for direct injection gaseous fuel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205297772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526024A (en) * | 2016-01-13 | 2016-04-27 | 西华大学 | Injector suitable for gas fuel direct-injection |
-
2016
- 2016-01-13 CN CN201620030331.4U patent/CN205297772U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526024A (en) * | 2016-01-13 | 2016-04-27 | 西华大学 | Injector suitable for gas fuel direct-injection |
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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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20171020 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20171020 |