CN203783736U - Multipoint multilevel fuel gas injection system for marine double fuel/gas engine - Google Patents
Multipoint multilevel fuel gas injection system for marine double fuel/gas engine Download PDFInfo
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- CN203783736U CN203783736U CN201420016920.8U CN201420016920U CN203783736U CN 203783736 U CN203783736 U CN 203783736U CN 201420016920 U CN201420016920 U CN 201420016920U CN 203783736 U CN203783736 U CN 203783736U
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- snifting
- snifting valve
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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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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The utility model relates to the field of fuel injection device and control and specifically relates to a multipoint multilevel fuel gas injection system for a marine double fuel/gas engine. The multipoint multilevel fuel gas injection system comprises a cylinder, a gas inlet valve, a gas inlet manifold, a vent valve, a vent manifold, a gas collector, a gas spraying valve set, a gas pressure stabilizing chamber, a gas rail pipe, a gas fuel pressure sensor, a gas fuel temperature sensor, a pressure adjusting device, a switch solenoid valve, a filter, a gas fuel storage device, a control system and a Lambda sensor. According to the utility model, the present gas spraying valve can be utilized to solve the developing, improving and matching problems of the double fuel/gas engine; the system can meet the small-flow fuel gas supply requirement under mass flow and low load and under high load and high rotating speed of the engine; the fuel gas spraying control precision of the double fuel/gas engine is increased; the distribution uniformity of the fuels in all cylinders is improved, so that the dynamic property, economical efficiency and emission performance of the engine are increased.
Description
Technical field
The utility model relates to fuel injection system and control field, is specifically related to a kind of double fuel/gas engine combustion gas multiple spot multi-stage jet system peculiar to vessel.
Background technique
Along with the exhaustion day by day of traditional fossil energy, a kind of high-quality alternative fuel-rock gas is paid attention to by countries in the world gradually.Double fuel/gas Multi-point jetting type motor is a kind of technology application form of alternative energy source, still there are at present many technical problems to be solved that have, one, because the diesel engine model of existing ship is many and power range is wide, when being carried out to double fuel transformation, existing diesel engine cannot the motor of every kind of model be mated the existing single snifting valve of application market; They are two years old, double fuel/gas Multi-point jetting type motor requires the air supply system can be in the restriction of very short injection pulse width under the high rotating speed operating mode of high load, a large amount of combustion gas is sprayed in intake manifold, this requires snifting valve to have very high specific discharge, but what the snifting valve that flow is larger was corresponding open, spray fuel quantity is larger, larger for the steady control effect of the running on the lower load of motor; Its three, the linear work region of snifting valve cannot all operating modes of covering engine, cause control accuracy not high, affect power performance and the emission performance of double fuel/gas engine.
Publication number CN1904335 patent relates to a kind of liquid gas or compressed natural gas automobile fuel gas multipoint sequencial jet system, with respect to single-point discharge have that control accuracy is high, good economy performance and the lower feature of discharge; The patent of publication number CN1465851 relates to a kind of port-sequence-injection, lean-burn, full electronic controlled diesel/natural gas dual-fuel engine, and this patent is improved power character, Economy and the emission performance of duel fuel engine on the basis of single-point discharge and mechanical fuel limit device by lean-burn, automatically controlled and multi-point injection technology; The patent of publication number CN101985906A relates to a kind of fuel injection mechanism of natural gas single-fuel engine, this mechanism is by being arranged on the gas nozzle near engine intake valve, jet efficiency is improved, contribute to the abundant mixing of mixed gas, improve combustion efficiency.
It is high that above-mentioned patent all has control accuracy with respect to single-point discharge, the advantage that Economy is better and discharge is lower, but while adopting independent snifting valve to carry out air feed to each cylinder, fuel gas injection flow and the accuracy requirement of motor at high speed high load working condition and low speed small load condition be cannot take into account simultaneously, motor Economy and emission performance variation made.
Model utility content
The purpose of this utility model is to provide a kind of double fuel/gas engine combustion gas multiple spot multi-stage jet system peculiar to vessel of the power character, Economy and the emission performance that improve motor.
The purpose of this utility model is achieved in that
The utility model comprises cylinder, suction valve, intake manifold, outlet valve, gas exhaust manifold, gas-collecting device, snifting valve group, gas pressure stabilizing cavity, gas rail pipe, gas fuel pressure sensor, gaseous fuel temperature transducer, regulator, switch electromagnetic valve, filter cleaner, gaseous fuel storage device, control system, exhaust gas oxygensensor, the gas rail pipe being fixed on motor is connected with gas pressure stabilizing cavity, the snifting valve assembling being arranged on gas-collecting device is assigned in gas pressure stabilizing cavity, gas-collecting device is arranged in intake manifold, suction valve is installed in intake manifold, intake manifold is connected with cylinder, gaseous fuel storage device is connected with filter cleaner by fuel feed line, and filter cleaner is connected with regulator, on the fuel feed line between filter cleaner and regulator, arranges switch electromagnetic valve, and regulator is connected with gas rail pipe by pipeline, control system is connected with snifting valve group, switch electromagnetic valve, gas pressure sensor, fuel temperature sensor and exhaust gas oxygensensor respectively, gas pressure sensor is arranged on gas rail pipe, and fuel temperature sensor is arranged on the pipeline between gas rail pipe and regulator, and exhaust gas oxygensensor is arranged on gas exhaust manifold, and gas exhaust manifold is connected with cylinder, and outlet valve is installed on gas exhaust manifold.
Gas pressure stabilizing cavity is the rectangular structure of a hollow, arrange that at the end face of voltage stabilizing cavity one section of connecting pipeline is to voltage stabilizing inside cavity, connecting pipeline is connected by flexible pipe with gas rail pipe, and has ripple struction at connecting pipeline head, increases the sealing of joint; There is the jet valve seat of corresponding snifting valve quantity in voltage stabilizing cavity bottom surface;
Gas-collecting device is installed on intake manifold top, and there is one section of mixed pipe line connection to enter intake manifold inside, shut the exterior edge face of mixed pipe line, and have small through hole in the surrounding of sidewall and be connected with pipeline inside, and with part pipeline axis and the intake manifold dead in line of small through hole;
Snifting valve group is made up of multiple snifting valves of different progression, the corresponding progression that sprays of snifting valve quantity, and the inlet end of snifting valve is connected with voltage stabilizing cavity by jet valve seat, and is fixed by pressing plate and bolt, by rubber seal, surface of contact is sealed simultaneously; Ejection end is connected with gas-collecting device chamber by hole, the corresponding cylinder number of snifting valve group quantity.
Snifting valve group, by control system control, with the rising of load condition, is adjusted the injection pulse width of snifting valve step by step.
Snifting valve group comprises first order snifting valve, second level snifting valve and third level snifting valve, the inlet end of three grades of snifting valves is connected with voltage stabilizing cavity by jet valve seat, and be fixed by pressing plate and bolt by tapped hole, by rubber seal, surface of contact is sealed simultaneously; Ejection end is connected with gas-collecting device chamber by hole, the corresponding cylinder number of snifting valve group quantity.
The beneficial effects of the utility model are:
This double fuel/gas engine combustion gas multiple spot multi-stage jet system peculiar to vessel not only can utilize existing snifting valve to solve exploitation, transformation and the matching problem of double fuel and gas engine, and, can meet the gas supply demand of small flow under the large flow of motor under the high rotating speed of high load and low-load simultaneously, improve the fuel gas injection control accuracy of double fuel/gas engine, improve each cylinder fuel distributing uniformity, thereby improve power character, Economy and the emission performance of motor.
Brief description of the drawings
Fig. 1 is double fuel/gas engine combustion gas multiple spot multi-stage jet system architecture schematic diagram peculiar to vessel;
Fig. 2 a is gas pressure stabilizing cavity structure front elevational view;
Fig. 2 b is the worm's eye view of gas pressure stabilizing cavity;
Fig. 3 is gas pressure stabilizing cavity and snifting valve connection diagram;
Fig. 4 is gas-collecting device section of structure;
Double fuel/gas engine combustion gas multiple spot multi-stage jet system fuel emitted dose Changing Pattern figure peculiar to vessel in the secondary snifting valve situation of Fig. 5 a identical parameters;
Double fuel/gas engine combustion gas multiple spot multi-stage jet system fuel emitted dose Changing Pattern figure peculiar to vessel in the secondary snifting valve situation of Fig. 5 b different parameters.
Embodiment
Below in conjunction with accompanying drawing, 1-5b is described further the utility model.
A kind of double fuel/gas engine combustion gas multiple spot multi-stage jet system peculiar to vessel, mainly comprises gaseous fuel storage and supply system, combustion gas multiple spot multi-stage jet assembly and control system 16.
Gaseous fuel stores with supply system and is mainly made up of gaseous fuel storage device 15, fuel feed line, filter cleaner 14, regulator 12 and switch electromagnetic valve 13;
Combustion gas multiple spot multi-stage jet assembly is made up of gas rail pipe 9, gas pressure stabilizing cavity 8, gas-collecting device 6 and snifting valve group 7, described gas rail pipe 9 is fixed on motor and with gas pressure stabilizing cavity 8 and is connected, snifting valve group 7 is assemblied in gas pressure stabilizing cavity 8, and be arranged on gas-collecting device 6, gas-collecting device 6 is arranged in intake manifold 3.
Control system 16 stores and is connected with the switch electromagnetic valve 13 of supply system with gaseous fuel with each snifting valve group 7 of combustion gas multiple spot multi-stage jet assembly, and by the identification engine operation condition automatically such as gas pressure sensor 10, fuel temperature sensor 11 and exhaust gas oxygensensor 17, each snifting valve is carried out to independence and grading control.
Gaseous fuel storage device 15 is connected with filter cleaner 14 by fuel feed line, and filter cleaner 14 is connected with regulator 12, and on fuel feed line, arranges switch electromagnetic valve 13, and described regulator 12 is connected with gas rail pipe 9 by pipeline.
Gas fuel pressure 10 and temperature sensor 11 are installed on gas rail pipe 9 and supply pipeline.
Gas pressure stabilizing cavity 8 is rectangular structure of a hollow, arrange that at the end face 20 of voltage stabilizing cavity 18 one section of connecting pipeline is to voltage stabilizing cavity 18 inside, this connecting pipeline 19 is connected by flexible pipe with gas rail pipe 9, and has ripple struction at pipeline head, increases the sealing of joint; There is the jet valve seat 21 of corresponding snifting valve quantity in voltage stabilizing cavity bottom surface 23.
Gas-collecting device 6 is installed on intake manifold 3 tops, and there are 28 connections of one section of mixed pipe line to enter intake manifold 3 inside, shut the exterior edge face 31 of this mixed pipe line 28, the small through hole 29 that has some quantity in the surrounding of sidewall is connected with pipeline inside, and with part pipeline axis and intake manifold 3 deads in line of small through hole 29.
Snifting valve group 7 is made up of multiple snifting valves of different progression, the corresponding progression that sprays of snifting valve quantity.The inlet end of snifting valve is connected with voltage stabilizing cavity 18 by jet valve seat 21, and is fixed by pressing plate and bolt, by rubber seal, surface of contact is sealed simultaneously; Ejection end is connected with gas-collecting device chamber 27 by hole 30, the corresponding cylinder number of snifting valve group 7 quantity.
The parameter of multiple snifting valves of different progression can be identical or different.
Snifting valve group 7 is controlled by control system 16, with the rising of operating mode load, adjusts step by step the injection pulse width of snifting valve.
As shown in Fig. 1,2,3,4,5, the utility model relates to a kind of double fuel/gas engine combustion gas multiple spot multi-stage jet system peculiar to vessel.This system is mainly made up of gaseous fuel storage and supply system, combustion gas multiple spot multi-stage jet assembly and control system 16.Its major character is: described combustion gas multiple spot multi-stage jet assembly is made up of gas rail pipe 9, gas pressure stabilizing cavity 8, gas-collecting device 6 and snifting valve group 7, described gas rail pipe 9 is fixed on motor and with gas pressure stabilizing cavity 8 and is connected, snifting valve group 7 is assemblied in gas pressure stabilizing cavity 8, and be arranged on gas-collecting device 6, gas-collecting device 6 is installed in intake manifold 3.Control system 16 is identification engine operation condition automatically, and the snifting valve in each snifting valve group 7 is carried out to independence and grading control.This model utility can improve the fuel gas injection control accuracy of double fuel/gas engine peculiar to vessel, improves each cylinder fuel distributing uniformity, thereby improves power character, Economy and the emission performance of motor.
As shown in Figure 1, for the utility model multi-stage jet system architecture schematic diagram, in figure, sequence number represents respectively 1 cylinder, 2 suction valves, 3 intake manifold, 4 outlet valves, 5 gas exhaust manifolds, 6 gas-collecting devices, 7 snifting valve groups, 8 pressure stabilizing cavities, 9 gas rail pipes, 10 gas fuel pressure sensors, 11 gaseous fuel temperature transducers, 12 regulators, 13 switch electromagnetic valves, 14 filter cleaners, 15 gaseous fuel storage devices, 16 control system, 17 exhaust gas oxygensensors.Gaseous fuel wherein stores with supply system and is mainly made up of gaseous fuel storage device 15, fuel feed line, filter cleaner 14 regulators 12 and switch electromagnetic valve 13, and described gaseous fuel stores with supply system the gaseous fuel of certain pressure is fed in described combustion gas multiple spot multi-stage jet assembly; Wherein combustion gas multiple spot multi-stage jet assembly is made up of gas rail pipe 9, gas pressure stabilizing cavity 8, gas-collecting device 6 and multiple snifting valve group 7, the combustion gas that this combustion gas multiple spot multi-stage jet assembly can provide above-mentioned gas fuel storage and supply system is with suitable fuel quantity, in suitable valve timing sprays into engine intake manifold 3; Described control system 16 is stored and is connected with the switch electromagnetic valve 13 of supply system with gaseous fuel with each snifting valve of snifting valve group 7 by bus, and detect the signals such as the gentle rail pressure temperature of rotating speed, load, water temperature, delivery temperature of motor by sensor, each snifting valve is carried out to independence and grading control.Gaseous fuel storage device is connected with regulator 12 by fuel feed line, and way switch solenoid valve 13 is installed on fuel feed line, described regulator 13 is connected with gas rail pipe 9 by pipeline, gas rail pipe 9 connects gaseous fuel is distributed to each gas pressure stabilizing cavity 8 through flexible pipe, then gaseous fuel is assigned to the snifting valve being installed in snifting valve seat 21 by gas pressure stabilizing cavity 8.Gas rail pipe 9 is fixed on the upper end of suction tude one side of engine body by support, reduce the length on gas connection pipe road between gas rail pipe 9 and gas pressure stabilizing cavity, this connecting pipeline length of each intake manifold 3 is identical as far as possible, and adopts flexible pipe to connect, be fixed on body surface, prevent bending.
As shown in Figure 2, be gas pressure stabilizing cavity structural representation, in figure, sequence number represents respectively 18 voltage stabilizing cavitys, 19 connecting pipelines, 20 pressure stabilizing cavity upper surfaces, 21 snifting valve seats, 22 retaining thread holes, 23 pressure stabilizing cavity bottom surfaces.Gas pressure stabilizing cavity 8 is rectangular structure of a hollow, opens hole at gas pressure stabilizing cavity upper surface 20, and at one section of connecting pipeline 19 of end face opening welding, be connected with voltage stabilizing cavity 18, this pipeline head has ripple struction, increases joint sealing, as shown in Figure 2 a; Have the snifting valve of corresponding snifting valve quantity to sit 21 in the bottom surface 23 of gas pressure stabilizing cavity, the outer aperture that this air valve is sat is slightly larger than the external diameter with snifting valve, and internal orifice dimension is identical with the suction port diameter of snifting valve; There is respectively a tapped hole 22 both sides at snifting valve seat 21 for stationary platen, as shown in Figure 2 b.
As shown in Figure 3, be gas pressure stabilizing cavity and snifting valve connection diagram, in figure, sequence number represents respectively 24 first order snifting valves, 25 second level snifting valves, 26 third level snifting valves.Described gas pressure stabilizing cavity 8 forms entirety with snifting valve group 7, compresses and is arranged on gas-collecting device 6; Described snifting valve group 7 comprises first order snifting valve 24, second level snifting valve 25 and third level snifting valve 26, sprays the corresponding snifting valve quantity of progression.The inlet end of snifting valve is connected with voltage stabilizing cavity 18 by jet valve seat 21, and is fixed by pressing plate and bolt by tapped hole 22, by rubber seal, surface of contact is sealed simultaneously; Ejection end is connected with gas-collecting device chamber 27 by hole 30, the corresponding cylinder number of snifting valve group 7 quantity.The performance parameter of above-mentioned snifting valve can be identical or different, requires to have the range of linearity that wider fuel injection amount changes with injection pulse width, has higher linear maximum fuel emitted dose simultaneously, and the snifting valve of adjacent injection progression is opened in succession.
As shown in Figure 4, be gas-collecting device section of structure, in figure, sequence number represents respectively 27 gas-collecting device chambeies, 28 mixed pipe lines, 29 through holes, 30 attachment holes, 31 mixed pipe line exterior edge faces.Described gas-collecting device 6 is installed on intake manifold 3 tops, and there are 28 connections of one section of mixed pipe line to enter intake manifold 3 inside, shut the exterior edge face 31 of this mixed pipe line 28, the small through hole 29 that has some quantity in the surrounding of sidewall is connected with pipeline inside, and with part pipeline axis and intake manifold 3 deads in line of small through hole 29; Snifting valve group 7 is connected with the gas-collecting device chamber 27 of gas-collecting device 6 by attachment hole 30.
As shown in Figure 5, for double fuel/gas engine combustion gas multiple spot multi-stage jet system fuel emitted dose peculiar to vessel is with load variations rule figure, Fig. 5 a is double fuel/gas engine combustion gas multiple spot multi-stage jet system fuel emitted dose Changing Pattern figure peculiar to vessel in the secondary snifting valve situation of identical parameters; Fig. 5 b is double fuel/gas engine combustion gas multiple spot multi-stage jet system fuel emitted dose Changing Pattern figure peculiar to vessel in the secondary snifting valve situation of different parameters.In the utility model, adopt three grades of spray regime interpretation work processes under duel fuel engine work situation, in figure, N1, N2, N3, N4 represent respectively specific load operating mode.First order course of injection is the course of injection that first order snifting valve 24 is major control amount; Second level course of injection is the course of injection that second level snifting valve 25 is major control amount; Third level course of injection is the course of injection that third level snifting valve 26 is major control amount.
As shown in Fig. 1,2,3,4,5, reach N at load
1the point moment, when rotating speed, load, water temperature, the oil temperature being detected by sensor by control system 16 reaches certain value situation, control duel fuel engine by control system 16 and be transformed into dual fuel mode by pure diesel fuel mode, a certain special position is fixed in the tooth bar position that is diesel pump, makes diesel injection amount be reduced to a certain specific Pilot diesel flow rate; Open the switch electromagnetic valve 13 that is positioned at gaseous fuel storage device fuel feed line, make gaseous fuel by pipeline by gaseous fuel storage device 15 after regulator 12, enter combustion gas multiple spot multi-stage jet assembly with the pressure of setting; Table look-up and give first order snifting valve 24 specific injection pulse width by control system 16, make the smooth transition of Fuel switching process.
As shown in Fig. 1,2,3,4,5, when load is at N
1with N
2between while changing, system is in first order course of injection, control system 16, taking the injection pulse width of first order snifting valve 24 as major control amount, is adjusted injection pulse width according to the load condition of motor.
As shown in Fig. 1,2,3,4,5, reach N at load
2in the some moment, the injection pulse width of controlling first order snifting valve 24 by control system 16 is by N
2the numerical value of some previous moment drops to a certain particular value, and what the fuel injection amount that first order snifting valve 24 is declined equaled second level snifting valve 25 opens spray fuel quantity, and control system 16 is controlled second level snifting valve 25 for opening spray pulsewidth simultaneously, makes N
2point previous moment and N
2the fuel injection amount in some moment is basic identical.
As shown in Fig. 1,2,3,4,5, when load is at N
2with N
3between while changing, system is in second level course of injection, control system 16 is taking the injection pulse width of second level snifting valve 25 as major control amount, in this process, the constant N that remains on of the injection pulse width of first order snifting valve 24
2the value in some moment, is changed with load by the fuel injection amount of second level snifting valve 25.
As shown in Fig. 1,2,3,4,5, reach N at load
3in the some moment, the injection pulse width of controlling second level snifting valve 25 by control system 16 is by N
3the numerical value of some previous moment drops to a certain particular value, and what the fuel injection amount that second level snifting valve 25 is declined equaled third level snifting valve 26 opens spray fuel quantity, and control system 16 is controlled third level snifting valve 26 for opening spray pulsewidth simultaneously, makes N
3point previous moment and N
3the fuel injection amount in some moment is basic identical.
As shown in Fig. 1,2,3,4,5, when load is at N
3with N
4between while changing, system is in third level course of injection, control system 16 is taking the injection pulse width of third level snifting valve 26 as major control amount, in this process, the constant N that remains on of the injection pulse width of second level snifting valve 25
3the value in some moment, is changed with load by the fuel injection amount of third level snifting valve 26.
Can be found the N corresponding to snifting valve of identical parameters by Fig. 5 a in Fig. 5 and Fig. 5 b contrast
2and N
3under point load operating mode, it is identical respectively that the slippage of previous stage snifting valve fuel and the fuel of rear one-level snifting valve open discharge rate, and between first order course of injection, second level course of injection and third level course of injection, the course of injection of each sparger is identical; The N corresponding to snifting valve of different parameters
2and N
3under point load operating mode, it is not necessarily identical that the slippage of previous stage snifting valve fuel and the fuel of rear one-level snifting valve open discharge rate, and between first order course of injection, second level course of injection and third level course of injection, the course of injection portion of each sparger is identical.
Claims (4)
1. double fuel/gas engine combustion gas multiple spot multi-stage jet system peculiar to vessel, comprise cylinder (1), suction valve (2), intake manifold (3), outlet valve (4), gas exhaust manifold (5), gas-collecting device (6), snifting valve group (7), gas pressure stabilizing cavity (8), gas rail pipe (9), gas fuel pressure sensor (10), gaseous fuel temperature transducer (11), regulator (12), switch electromagnetic valve (13), filter cleaner (14), gaseous fuel storage device (15), control system (16), exhaust gas oxygensensor (17), it is characterized in that: the gas rail pipe (9) being fixed on motor is connected with gas pressure stabilizing cavity (8), the snifting valve group (7) being arranged on gas-collecting device (6) is assemblied in gas pressure stabilizing cavity (8), gas-collecting device (6) is arranged in intake manifold (3), suction valve (2) is installed in intake manifold, intake manifold is connected with cylinder (1), gaseous fuel storage device (15) is connected with filter cleaner (14) by fuel feed line, filter cleaner (14) is connected with regulator (12), on fuel feed line between filter cleaner (14) and regulator (12), arrange switch electromagnetic valve (13), regulator (12) is connected with gas rail pipe (9) by pipeline, control system (16) is connected with snifting valve group (7), switch electromagnetic valve (13), gas pressure sensor (10), fuel temperature sensor (11) and exhaust gas oxygensensor (17) respectively, gas pressure sensor (10) is arranged on gas rail pipe (9), fuel temperature sensor (11) is arranged on the pipeline between gas rail pipe (9) and regulator (12), exhaust gas oxygensensor (17) is arranged on gas exhaust manifold, gas exhaust manifold is connected with cylinder, and outlet valve (4) is installed on gas exhaust manifold.
2. one according to claim 1 double fuel/gas engine peculiar to vessel combustion gas multiple spot multi-stage jet system, it is characterized in that: gas pressure stabilizing cavity (8) is the rectangular structure of a hollow, arrange that at the end face (20) of voltage stabilizing cavity (18) one section of connecting pipeline is to voltage stabilizing cavity (18) inside, connecting pipeline (19) is connected by flexible pipe with gas rail pipe (9), and there is ripple struction at connecting pipeline head, increase the sealing of joint; There is the jet valve seat (21) of corresponding snifting valve quantity in voltage stabilizing cavity bottom surface (23);
Gas-collecting device (6) is installed on intake manifold (3) top, and there is one section of mixed pipe line (28) connection to enter intake manifold (3) inside, shut the exterior edge face (31) of mixed pipe line (28), have small through hole (29) in the surrounding of sidewall and be connected with pipeline inside, and with part pipeline axis and intake manifold (3) dead in line of small through hole (29);
Snifting valve group (7) is made up of multiple snifting valves of different progression, the corresponding progression that sprays of snifting valve quantity, the inlet end of snifting valve is connected with voltage stabilizing cavity (18) by jet valve seat (21), and is fixed by pressing plate and bolt, by rubber seal, surface of contact is sealed simultaneously; Ejection end is connected with gas-collecting device chamber (27) by hole (30), the corresponding cylinder number of snifting valve group (7) quantity.
3. one according to claim 1 and 2 double fuel/gas engine peculiar to vessel combustion gas multiple spot multi-stage jet system, it is characterized in that: described snifting valve group (7) is controlled by control system (16), with the rising of load condition, adjust step by step the injection pulse width of snifting valve.
4. one according to claim 3 double fuel/gas engine peculiar to vessel combustion gas multiple spot multi-stage jet system, it is characterized in that: described snifting valve group (7) comprises first order snifting valve (24), second level snifting valve (25) and third level snifting valve (26), the inlet end of three grades of snifting valves is connected with voltage stabilizing cavity (18) by jet valve seat (21), and be fixed by pressing plate and bolt by tapped hole (22), by rubber seal, surface of contact is sealed simultaneously; Ejection end is connected with gas-collecting device chamber (27) by hole (30), the corresponding cylinder number of snifting valve group (7) quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016920.8U CN203783736U (en) | 2014-01-13 | 2014-01-13 | Multipoint multilevel fuel gas injection system for marine double fuel/gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016920.8U CN203783736U (en) | 2014-01-13 | 2014-01-13 | Multipoint multilevel fuel gas injection system for marine double fuel/gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203783736U true CN203783736U (en) | 2014-08-20 |
Family
ID=51319931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420016920.8U Withdrawn - After Issue CN203783736U (en) | 2014-01-13 | 2014-01-13 | Multipoint multilevel fuel gas injection system for marine double fuel/gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203783736U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790718A (en) * | 2014-01-13 | 2014-05-14 | 哈尔滨工程大学 | Marine dual-fuel/gas engine multipoint multi-stage injection system |
| CN104775941A (en) * | 2015-04-22 | 2015-07-15 | 济南大学 | Control system and control method for improving transient response of gas engine |
-
2014
- 2014-01-13 CN CN201420016920.8U patent/CN203783736U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790718A (en) * | 2014-01-13 | 2014-05-14 | 哈尔滨工程大学 | Marine dual-fuel/gas engine multipoint multi-stage injection system |
| CN103790718B (en) * | 2014-01-13 | 2016-08-17 | 哈尔滨工程大学 | A kind of double fuel peculiar to vessel/gas engine combustion gas multiple spot multi-stage jet system |
| CN104775941A (en) * | 2015-04-22 | 2015-07-15 | 济南大学 | Control system and control method for improving transient response of gas engine |
| CN104775941B (en) * | 2015-04-22 | 2017-03-01 | 济南大学 | Improve the control method of gas engine transient response |
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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 |
Granted publication date: 20140820 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |