CN2356152Y - Gas fuel manifold mixer for double fuel engine - Google Patents
Gas fuel manifold mixer for double fuel engine Download PDFInfo
- Publication number
- CN2356152Y CN2356152Y CN99234382U CN99234382U CN2356152Y CN 2356152 Y CN2356152 Y CN 2356152Y CN 99234382 U CN99234382 U CN 99234382U CN 99234382 U CN99234382 U CN 99234382U CN 2356152 Y CN2356152 Y CN 2356152Y
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- gaseous fuel
- air inlet
- diameter
- engine
- pipe
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- Expired - Fee Related
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model relates to a gas fuel manifold mixer for a double fuel engine, and the multi-hole mixing nozzle of the utility model is connected with one end of a gas fuel air inlet pipe and is inserted into the air inlet channel of the engine. The other end of the air inlet pipe is connected with a volume cavity body whose one end is connected with a volume cavity tube socket fixed on the wall surface of the air inlet pipe, and the other end of the volume cavity body is connected to the air inlet manifold of each cylinder integrated with a gas fuel air inlet main pipe which is connected with a gas fuel air supply system controlled by an engine governor. The utility model is suitable to be used for the design, the manufacture and the modification of the double fuel engine, and the utility model has the advantages of simple structure, low equipment cost and enhanced working reliability of the engine.
Description
The utility model belongs to field of mechanical technique, further relates to a kind of gaseous fuel manifold mixer with gaseous propellant engine.
But duel fuel engine is a kind of motor that not only can use diesel oil but also using gases fuel.It is aided with a small amount of diesel oil as the realization of oil mass with assurance compression ignite process of igniting in work cycle, when gaseous fuel is under-supply, also can convert the full diesel state rapidly to.Will take into account the use and the dual-fuel of single liquid fuel diesel in the duel fuel engine uses.In the bigger supercharging type of valve overlap, for preventing that gaseous fuel from entering outlet pipe with scavenging, must adopt all kinds of complicated mechanical valve systems to come the supply moment of control gaseous fuel by distribution device control, for example: on the intake duct of cylinder cap, gas fuel valve is installed side by side with suction valve, and by inlet rocker arm control, make gaseous fuel than suction valve lately open, Zao pass; Perhaps the mode of gas fuel valve with series connection is installed on the air inlet valve lever, moves with suction valve; In addition, nozzle being installed on cylinder head makes the method for gaseous fuel timing high-pressure injection also be used for external commercial product; Adopt the scheme of electromagnetic valve combustion gas that report was also once arranged.Comprehensive above-mentioned various methodologies is not difficult to find out that the structural design of these schemes all contains mechanical moving element, and this can reduce the reliability and the stability of engine operation undoubtedly, and the corresponding cost of production that improved.Because relate to gas distribution system, even the change of body structure, therefore above-mentioned all kinds of schemes are unsuitable for diesel engine is carried out double fuel machine remodeling, almost can't implement the renovation technique of existing type.
The purpose of this utility model provides a kind of duel fuel engine gaseous fuel manifold mixer of nothing machinery motion valve of simple in structure, reliable operation.
The purpose of this utility model is achieved in that
Duel fuel engine gaseous fuel manifold mixer comprises mixer assembly, air flow channel.An end of pipe connects the porous mixing nozzle and inserts in the free-air diffuser in the air flow channel before the gaseous fuel air inlet in the mixer assembly, the pipe the other end is connected with the cavity volume pedestal that tubular volume cavity reaches with it is connected as a single entity before the gaseous fuel air inlet, and be fixed on the air intake duct wall by fixing bolt, an end of pipe is connected with the volume cavity after the gaseous fuel air inlet, the other end be connected to the gaseous fuel intake manifold on each cylinder intake manifold on, the gaseous fuel supply air line of gaseous fuel intake manifold and engine governor control is connected.
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is volume cavity embodiment's 1 an of the present utility model structural drawing.
Fig. 3 is volume cavity embodiment's 2 an of the present utility model structural drawing.
Among Fig. 1, porous mixing nozzle 11 is connected with an end of the preceding pipe 10 of gaseous fuel air inlet, and in the free-air diffuser 14 on the insertion cylinder head 12.The other end of pipe 10 is connected with volume cavity 9 before the gaseous fuel air inlet, and volume cavity 9 is fixed on the side wall surface of air intake duct 6 by cavity volume pedestal 8, clamping bolt 7.
The other end of volume cavity 9 is connected with pipe 5 after the gaseous fuel air inlet.Pipe 5 is connected on each cylinder intake manifold 2 by clamping bolt 3, adpting flange 4 after the gaseous fuel air inlet, and each cylinder intake manifold 2 is connected with gaseous fuel intake manifold 1.Gaseous fuel is by the gaseous fuel supply air line 15 inflow gas fuel air house stewards 1 of engine governor control.
The 13 unlatching initial stages of intake valve during the engine charge stroke, be that valve overlap is between scavenging period this moment, air-intake negative-pressure is lower in the free-air diffuser 14, can suppress the initial stage air inflow of gaseous fuel by the effect of managing 10 before porous mixing nozzle 11, the gaseous fuel air inlet, device such as pipe 5 and volume cavity 9 is formed after the gaseous fuel air inlet, avoid a large amount of gaseous fuels participation scavenging processes.After intake valve 13 is fully opened, after gaseous fuel is flowed out by porous mixing nozzle 11, in intake duct 14 and air mixing, and enter into cylinder.
Pipe 10 is connected with porous mixing nozzle 11 before the gaseous fuel air inlet of the present utility model.The porous mixing nozzle is a thin-wall wimble barrel, and the diameter of the big end of awl tube is identical with the diameter of the preceding pipe of gaseous fuel air inlet, and awl tube length degree is 2～3 times of its diameter, uniform circular through-hole on its barrel.The porous mixing nozzle inserts in the free-air diffuser, and its position is in the below of free-air diffuser center line of suction, and insertion depth is no more than self length.
The internal diameter of pipe is identical with the internal diameter of the preceding pipe of gaseous fuel air inlet after the internal diameter of porous mixing nozzle of the present utility model, the gaseous fuel air inlet, this internal diameter is 1/3～1/5 of a free-air diffuser equivalent diameter, and described equivalent diameter is meant the diameter with the identical circular channel of free-air diffuser actual internal area numerical value.
In the duel fuel engine gaseous fuel manifold mixer of the present utility model, the diameter of tubular volume cavity greater than the gaseous fuel air inlet before the diameter of pipe, the volume of volume cavity is 1/5～1/20 of a motor displacement per cylinder, to eliminate the influence of intake process pressure surge.
The diameter of volume cavity of the present utility model can equal the diameter of the preceding pipe of gaseous fuel air inlet.Shown in Figure 2.At this moment, pipe and be a long tube 16 before volume cavity and the gaseous fuel air inlet, and be fixed on the air intake duct by flange plate 17.
Volume cavity diameter of the present utility model is usually greater than the diameter of pipe before the gaseous fuel air inlet.Volume cavity 9 can be arranged in the air intake duct, also can be arranged on the air intake duct outside, and is shown in Figure 3.
The utility model project organization is simple, has promptly reduced equipment cost, has improved the engine operation reliability again, for duel fuel engine manufacture and design and the neat liquid engine fuel transform the double fuel machine as new simple and direct technological means is provided.
Claims (6)
1. duel fuel engine gaseous fuel manifold mixer, it comprises mixer assembly, air flow channel.It is characterized in that: an end of pipe (10) connects porous mixing nozzle (11) and inserts in the free-air diffuser (14) in the air flow channel before the gaseous fuel air inlet in the described mixer assembly, pipe (10) the other end is connected with the cavity volume pedestal (8) that tubular volume cavity (9) reaches with it is connected as a single entity before the gaseous fuel air inlet, and be fixed on air intake duct (6) wall by fixing bolt (7), an end of pipe (5) is connected with volume cavity (9) after the gaseous fuel air inlet, the other end be connected to gaseous fuel intake manifold (1) on each cylinder intake manifold (2) on, the gaseous fuel air supply system (15) of gaseous fuel intake manifold (1) and engine governor control is connected.
2. duel fuel engine gaseous fuel manifold mixer as claimed in claim 1, it is characterized in that: described porous mixing nozzle (11) is a thin-wall wimble barrel, awl tube diameter is identical with the diameter of the preceding pipe of gaseous fuel air inlet (10), awl tube length degree is 2～3 times of its diameter, its barrel periphery is covered with circular through-hole, and porous mixing nozzle (11) inserts the below of free-air diffuser (14) inboard, ingress.
3. duel fuel engine gaseous fuel manifold mixer as claimed in claim 1 is characterized in that: the diameter of pipe is identical with the diameter of the preceding pipe of gaseous fuel air inlet after the described gaseous fuel air inlet, and its diameter is 1/3～1/5 of a free-air diffuser equivalent diameter.
4. duel fuel engine gaseous fuel manifold mixer as claimed in claim 1, it is characterized in that: the diameter of described tubular volume cavity (9) greater than the gaseous fuel air inlet before the pipe (10) diameter, the volume of volume cavity is 1/5～1/20 of a motor displacement per cylinder.
5. duel fuel engine gaseous fuel manifold mixer as claimed in claim 1 is characterized in that: the diameter of pipe (10) before the fourth gaseous fuel air inlets such as diameter of described volume cavity (9), volume cavity (9) is arranged in the air intake duct.
6. duel fuel engine gaseous fuel manifold mixer as claimed in claim 1, it is characterized in that: described volume cavity (9) is arranged on the air intake duct outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99234382U CN2356152Y (en) | 1999-02-08 | 1999-02-08 | Gas fuel manifold mixer for double fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99234382U CN2356152Y (en) | 1999-02-08 | 1999-02-08 | Gas fuel manifold mixer for double fuel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2356152Y true CN2356152Y (en) | 1999-12-29 |
Family
ID=34022562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99234382U Expired - Fee Related CN2356152Y (en) | 1999-02-08 | 1999-02-08 | Gas fuel manifold mixer for double fuel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2356152Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576007A (en) * | 2008-05-05 | 2009-11-11 | 通用电气公司 | Primary manifold dual gas turbine fuel system |
| CN104775952A (en) * | 2015-05-05 | 2015-07-15 | 吉林大学 | Dual-fuel engine inlet 45-degree four-hole spray pipe |
| CN105822462A (en) * | 2016-05-12 | 2016-08-03 | 吉林大学 | Inlet spray pipe of natural gas engine |
| CN106050479A (en) * | 2016-06-13 | 2016-10-26 | 重庆潍柴发动机有限公司 | Gas injection valve and injection pipe structure and installation and arrangement method |
-
1999
- 1999-02-08 CN CN99234382U patent/CN2356152Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576007A (en) * | 2008-05-05 | 2009-11-11 | 通用电气公司 | Primary manifold dual gas turbine fuel system |
| US8438830B2 (en) | 2008-05-05 | 2013-05-14 | General Electric Company | Primary manifold dual gas turbine fuel system |
| CN101576007B (en) * | 2008-05-05 | 2015-09-30 | 通用电气公司 | Primary manifold dual gas turbine fuel system |
| CN104775952A (en) * | 2015-05-05 | 2015-07-15 | 吉林大学 | Dual-fuel engine inlet 45-degree four-hole spray pipe |
| CN105822462A (en) * | 2016-05-12 | 2016-08-03 | 吉林大学 | Inlet spray pipe of natural gas engine |
| CN106050479A (en) * | 2016-06-13 | 2016-10-26 | 重庆潍柴发动机有限公司 | Gas injection valve and injection pipe structure and installation and arrangement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |