CN202338403U - Gas flow rate control device of gas engine precombustion chamber - Google Patents
Gas flow rate control device of gas engine precombustion chamber Download PDFInfo
- Publication number
- CN202338403U CN202338403U CN2011204455760U CN201120445576U CN202338403U CN 202338403 U CN202338403 U CN 202338403U CN 2011204455760 U CN2011204455760 U CN 2011204455760U CN 201120445576 U CN201120445576 U CN 201120445576U CN 202338403 U CN202338403 U CN 202338403U
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- China
- Prior art keywords
- gas
- precombustion chamber
- gas flow
- frequency control
- pressure
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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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- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The utility model relates to a gas flow rate control device of a gas engine precombustion chamber, which aims to solve the problem that as the conventional device can't precisely adjust and control the gas flow rate, the gas flow rate of the precombustion chamber has high possibility of being overbig or oversmall, and further might cause fire catching or fire cutting-off. The gas flow rate control device includes an air intake pipeline, a gas collecting pressure-stabilizing pipe and a precombustion chamber connected to the rear end thereof, a controller, a differential pressure transducer and frequency control valves, wherein the frequency control valves are arranged between the air intake pipeline and the gas collecting pressure-stabilizing pipe; the differential pressure transducer is used for detecting the gas pressure input from the gas collecting pressure-stabilizing pipe to the precombustion chamber and the gas pressure in the cylinder and transmitting the differential pressure signals of the two pressure difference to the controller, and the controller is in signal connection with the frequency control valves; and air intake pipeline is communicated with the gas collecting pressure-stabilizing pipe through a plurality of pipelines in parallel, and the frequency control valves are arranged on all the pipelines in parallel respectively. The gas flow rate control device can precisely control and adjust the gas flow rate entering the gas precombustion chamber in a real-time and closed-loop way.
Description
Technical field
the utility model relates to a kind of engine gas flow control device, particularly relates to a kind of gas engine precombustion chamber gas flow control device.
Background technique
The key of
independent supply technology of precombustion chamber is to control the gas flow that gets into precombustion chamber, but the mixture strength in the precombustion chamber is controlled in the range of fire.The gas engine type of domestic other independent developments does not at present adopt the independent air inlet technology of precombustion chamber, and abroad the precombustion chamber air demand of some gas engines is to control through the switching time of the one-way valve installed in the precombustion chamber.Because the flammable concentration range of fuel gas mixture is very narrow, if the gas quantity that independent air feed is got into precombustion chamber can not carry out real-time accurate control preferably, just easily the phenomenon of catching fire appears, make the motor can't proper functioning.
along with the variation of gas engine rotating speed and power, the gas flow of precombustion chamber air feed is dynamic change.Simultaneously; The engine load variation can cause the gas pressure change in the cylinder, and the precombustion chamber internal capacity is connected with cylinder through spray orifice, so the pressure of precombustion chamber gas supply also must change thereupon; Could keep certain difference with it, thereby guarantee the combustion gas air inflow of precombustion chamber.It generally is changeless adopting the precombustion chamber suction pressure of the motor of the independent air feed of precombustion chamber at present; Can't follow the variation of cylinder pressure and dynamic real-time is adjusted automatically; After the variation of engine load and cylinder pressure; Precombustion chamber air feed gaseous-pressure and cylinder pressure difference also change, and might cause the pre-burning gas flow excessive or too small, thereby possibly cause that phenomenons such as engine fire, cutoff take place.
are because the gas quantity of the independent air feed actual demand of precombustion chamber is less; And its suction pressure is higher; The circulation of the common butterfly valve or the valve of other types and control characteristic are unwell to the applicable cases of this high pressure, small flow, can't accurately regulate and control the flow that gets into the precombustion chamber combustion gas.Therefore, must find a kind of suitable apparatus and method to satisfy the requirement of pre-burning gas supply flow control.
The model utility content
The purpose of
the utility model is to solve existing gas flow control device can't accurately regulate and control gas flow; Cause the precombustion chamber gas flow excessive or too small easily; Thereby possibly cause problems such as engine fire, cutoff; A kind of gas engine precombustion chamber gas flow control device is provided, and this device can carry out in real time the gas flow that gets into the gas engine precombustion chamber, the control and the adjusting of accurate, closed loop.
The purpose of
the utility model realizes through following technical proposal: gas engine precombustion chamber gas flow control device; The gas collection voltage-stabiliser tube that comprises admission line and be communicated with it; Gas collection voltage-stabiliser tube rear end connects the precombustion chamber of each cylinder; Also comprise controller, differential pressure transducer and FREQUENCY CONTROL valve; Wherein the FREQUENCY CONTROL valve is arranged between admission line and the gas collection voltage-stabiliser tube; Gas gets into the gas collection voltage-stabiliser tube from admission line through the FREQUENCY CONTROL valve, and differential pressure transducer is used to detect the gentle cylinder pressure of gas pressure of gas collection voltage-stabiliser tube input precombustion chamber and the differential pressure signal of two pressure differences is delivered to controller, and controller is connected the opening and closing that are used for the control frequency control valve with the FREQUENCY CONTROL valve signal.
In such scheme, said admission line is communicated with the gas collection voltage-stabiliser tube through the pipeline of a plurality of parallel connections
, all is provided with a FREQUENCY CONTROL valve on each parallelly connected pipeline.
Can find out that from each item technical characteristics of the utility model the advantage of the utility model is:
1, can the gas flow that get into precombustion chamber be realized more accurately and pressure and flow control flexibly;
2,, can be applied to the various gas engine of broad power band and many structural types owing to the property capable of being combined of this device;
3, employing closed loop are controlled in real time, can in time carry out dynamic regulating and controlling according to the variation of engine load conditions, have very high very fast response characteristic.
Description of drawings
The utility model will explain through embodiment and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the structural representation of the utility model;
Reference character wherein: the 1st, admission line 2 is gas collection voltage-stabiliser tubes
The 3rd, precombustion chamber 4 is that controller 5 is differential pressure transducers
the 6th, the FREQUENCY CONTROL valve.
Embodiment
are done further explanation below in conjunction with accompanying drawing to the utility model.
The gas engine precombustion chamber gas flow control device that
are as shown in Figure 1; Comprise controller, FREQUENCY CONTROL valve, differential pressure transducer, gas collection voltage-stabiliser tube; Its control procedure is: the gas source of high pressure through admission line line branching and be connected to the import of several FREQUENCY CONTROL valves; Gas flow gets into the gas collection voltage-stabiliser tube behind the FREQUENCY CONTROL valve, connect the precombustion chamber that enters into each cylinder respectively from the gas collection voltage-stabiliser tube again.
FREQUENCY CONTROL valve is a kind of high speed motion valve that is driven by pwm signal, can bear elevated pressures, and the time length of its unlatching depends on the dutycycle size of pwm signal.Because the action response characteristic of FREQUENCY CONTROL valve; When pwm signal dutycycle width less than 5% time or when being higher than 85%; The FREQUENCY CONTROL valve all can cut out; Therefore whether the unlatching of FREQUENCY CONTROL valve also can directly be controlled by pwm signal, and the size of gas flow is to be controlled jointly with each FREQUENCY CONTROL valve opening time long and short two factor by total number of the FREQUENCY CONTROL valve of opening simultaneously in this device.
The unlatching number of
FREQUENCY CONTROL valve and each FREQUENCY CONTROL valve opening time length all are to be controlled by the dutycycle width of the pwm signal of the output of the controller in this device.Air pressure after the instant detection of engine supercharging of differential pressure transducer (this pressure reflection engine load conditions; Also be gas pressure in the cylinder) and the pressure (being the gas collection voltage-stabiliser tube is exported gas in precombustion chamber pressure) of gas collection voltage-stabiliser tube and export a differential pressure comparison signal; Controller receives the differential pressure signal from differential pressure transducer; And compare with the inner preset standard differential pressure value of controller, to the FREQUENCY CONTROL valve, dynamically increase and decrease the unlatching number and the opening time of FREQUENCY CONTROL valve according to both difference condition output corresponding PWM; Thereby change the gas flow that gets into the gas collection voltage-stabiliser tube; Regulate gas collection voltage-stabiliser tube internal pressure, make it to keep difference, realize control precombustion chamber air feed gas flow to gas pressure in the cylinder.
are regulated through the flow control that the FREQUENCY CONTROL valve number of arranging in pairs or groups different, different FREQUENCY CONTROL valve latus rectums can adapt to various scopes, thereby make this device can be applied to all motors that has similar flow control to need.Such as, the gas engine of multiple cylinder numbers such as 6 cylinders, 12 cylinders, 16 cylinders, different cylinder diameters can both be used the flow control that this apparatus system is realized the precombustion chamber air inlet.
Predefined differential pressure reference value can change in
controller, and its occurrence is to grope provide an optimum value such as power, discharge capacity, supercharging level etc. through test according to different engine models.For the motor that has electric control box, also can be integrated in through the control function that this Setup Controller is realized in the present existing controller of motor and realize, and needn't a controller be set independent installation.
Disclosed all characteristics in
this specification except mutually exclusive characteristic, all can make up by any way.
Disclosed arbitrary characteristic in
these specifications (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
the above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (2)
1. gas engine precombustion chamber gas flow control device; The gas collection voltage-stabiliser tube (2) that comprises admission line (1) and be communicated with it; Gas collection voltage-stabiliser tube (2) rear end connects the precombustion chamber (3) of each cylinder; It is characterized in that also comprising controller (4), differential pressure transducer (5) and FREQUENCY CONTROL valve (6); Wherein FREQUENCY CONTROL valve (6) is arranged between admission line (1) and the gas collection voltage-stabiliser tube (2); Gas gets into gas collection voltage-stabiliser tube (2) from admission line (1) through FREQUENCY CONTROL valve (6), and differential pressure transducer (5) is used to detect the gentle cylinder pressure of gas pressure of gas collection voltage-stabiliser tube (2) input precombustion chamber (3) and the differential pressure signal of two pressure differences is delivered to controller (4), and controller (4) is connected the opening and closing that are used for control frequency control valve (6) with FREQUENCY CONTROL valve (6) signal.
2. gas engine precombustion chamber gas flow control device according to claim 1; It is characterized in that said admission line (1) is communicated with gas collection voltage-stabiliser tube (2) through the pipeline of a plurality of parallel connections, all is provided with a FREQUENCY CONTROL valve (6) on each parallelly connected pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204455760U CN202338403U (en) | 2011-11-11 | 2011-11-11 | Gas flow rate control device of gas engine precombustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204455760U CN202338403U (en) | 2011-11-11 | 2011-11-11 | Gas flow rate control device of gas engine precombustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338403U true CN202338403U (en) | 2012-07-18 |
Family
ID=46487095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204455760U Expired - Fee Related CN202338403U (en) | 2011-11-11 | 2011-11-11 | Gas flow rate control device of gas engine precombustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338403U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400801A (en) * | 2011-11-11 | 2012-04-04 | 南车玉柴四川发动机股份有限公司 | Gas flow control device of precombustion chamber of gas engine and control method thereof |
| CN105937450A (en) * | 2015-03-06 | 2016-09-14 | 曼柴油机和涡轮机欧洲股份公司 | Method for operating engine and closed-loop control system |
-
2011
- 2011-11-11 CN CN2011204455760U patent/CN202338403U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400801A (en) * | 2011-11-11 | 2012-04-04 | 南车玉柴四川发动机股份有限公司 | Gas flow control device of precombustion chamber of gas engine and control method thereof |
| CN105937450A (en) * | 2015-03-06 | 2016-09-14 | 曼柴油机和涡轮机欧洲股份公司 | Method for operating engine and closed-loop control system |
| CN105937450B (en) * | 2015-03-06 | 2020-02-28 | 曼恩能源方案有限公司 | Method and closed loop control system for operating an engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 641301, Sichuan province Ziyang Yanjiang District Linjiang town big weir village four groups Patentee after: Sichuan Zhongche Yuchai engine Limited by Share Ltd Address before: 641301, Sichuan province Ziyang Yanjiang District Linjiang town big weir village four groups Patentee before: YCSR Sichuan Engine Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20171111 |