CN203146186U - Fuel gas ejector of multi-cylinder gas engine - Google Patents
Fuel gas ejector of multi-cylinder gas engine Download PDFInfo
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- CN203146186U CN203146186U CN 201320117300 CN201320117300U CN203146186U CN 203146186 U CN203146186 U CN 203146186U CN 201320117300 CN201320117300 CN 201320117300 CN 201320117300 U CN201320117300 U CN 201320117300U CN 203146186 U CN203146186 U CN 203146186U
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- combustion gas
- cylinder
- gas
- common rail
- air inlet
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Abstract
The utility model discloses a fuel gas ejector of a multi-cylinder gas engine. The ejector comprises a fuel gas inlet common rail pipe, fuel gas inlet manifolds and ejecting metering valves, wherein the fuel gas inlet manifolds are vertically arranged on the lower side of the fuel gas inlet common rail pipe, and the ejecting metering valves are arranged on the fuel gas inlet manifolds in a connected mode. One end of the fuel gas inlet common rail pipe is connected with a gas rail gas inlet connector in a sealed mode, a pressure and temperature sensor is arranged on the other end of the fuel gas inlet common rail pipe in a connected mode, the number of the fuel gas inlet manifolds corresponds to that of the cylinders of the engine one to one, and the ejecting metering valves are connected with an ECU. According to the ejector, due to the fact that the fuel gas inlet manifolds which are provided with the ejecting metering valves and correspond to all the cylinders are arranged, fuel gas feeding of all the cylinders can be controlled accurately, feeding uniformity is good, and the dynamic property and economical efficiency of the engine are improved.
Description
Technical field
The utility model relates to engine art, particularly a kind of multi-cylinder gas engine gas injector.
Background technique
At present, the multi-cylinder gas engine adopts the single-point discharge combustion technology more, namely at independent mixer of engine intake manifold design, this mixer adopts proportion expression or venturi type structure, and combustion gas enters mixer and mixes with air and be delivered to suction tude again and be assigned to every cylinder and burn after pressure regulation.
Owing to have only a point (mixer) to carry out combustion gas and air mixing, mixed effect is not good, and the required combustion gas of each cylinder all unifies to be distributed by mixer, and each cylinder is supplied with and can not accurately be controlled separately, supply with lack of homogeneity, directly influence power character and the Economy of motor; In addition, single-point discharge is to mix earlier to distribute by suction tude again, has independent mixed process, from engine chamber apart from too far away, so that motor accelerates is corresponding slow.
The model utility content
The utility model is in order to overcome defective in the above-mentioned prior art, to provide a kind of simple and reasonable, can accurately controlling each cylinder fuel gas supply, supply with good uniformity, to improve power character and the Economy of motor; And can be directly with fuel gas injection to entering cylinder after the air inlet of engine cylinder cover and air mix, improving the multi-cylinder gas engine gas injector that motor accelerates corresponding speed.
For achieving the above object, provide a kind of multi-cylinder gas engine gas injector according to the utility model, comprise: combustion gas air inlet common rail pipe and be vertically set on the combustion gas intake manifold of combustion gas air inlet common rail pipe downside, and connect the spraymeter metered valve that is located on the combustion gas intake manifold; One end of combustion gas air inlet common rail pipe is tightly locked with gas rail air input joint, and the other end is equipped with the gaseous-pressure temperature transducer, and the upside of combustion gas air inlet common rail pipe is distributed with the installation lug; The number of combustion gas intake manifold is corresponding one by one with the cylinder number of motor; The spraymeter metered valve is connected with ECU, realizes that by ECU control its accurate control to the required combustion gas of each cylinder of motor distributes, and its nozzle is connected with engine air inlet tube.
In the technique scheme, be provided with O type rubber ring between gas rail air input joint and the combustion gas air inlet common rail pipe, be provided with O type rubber ring between gaseous-pressure temperature transducer and the combustion gas air inlet common rail pipe, be provided with O type rubber ring between spraymeter metered valve and the combustion gas intake manifold.
In the technique scheme, also be provided with the thrust gum cover between spraymeter metered valve and the combustion gas intake manifold.
In the technique scheme, also comprise: the lug shock-damping structure, it specifically comprises: beam, distance sleeve and cushion block, beam comprises: rubber bush and the metal basic ring that is positioned at rubber bush one end, during installation, the metal basic ring of two beams outwardly by the both sides that lug is installed to establishing, distance sleeve is located in two beams, cushion block is positioned at a side of beam.
In the technique scheme, it is two that lug is installed, and is laid in the upside of combustion gas air inlet common rail pipe at interval.
In the technique scheme, the spraymeter metered valve is high-frequency electromagnetic valve.
In the technique scheme, also comprise: spraymeter metered valve fastening structure, it specifically comprises: nozzle pressing plate, supporting sleeve and bolt, the nozzle pressing plate is long strip-board shape, axially spaced-apart offers a plurality of nozzle receptacle corresponding with spraymeter metered valve nozzle, the side faces at both ends of nozzle pressing plate offered the nail hole respectively, and the side of combustion gas intake manifold has and follows closely the corresponding fastening installation lug that is threaded the hole in hole excessively; After bolt passed the nail hole, after supporting sleeve was set on the bolt, bolt was spirally connected with the fastening installation lug of combustion gas intake manifold again.
In the technique scheme, be provided with packing ring between supporting sleeve and the nozzle pressing plate.
Compared with prior art, the utlity model has following beneficial effect: this multi-cylinder gas engine gas injector is by arranging and each cylinder corresponding combustion gas intake manifold that has the spraymeter metered valve respectively, can accurately control each cylinder fuel gas supply, supply with good uniformity, improve power character and the Economy of motor; And this multi-cylinder gas engine gas injector can be directly with fuel gas injection to entering cylinder after the air inlet of engine cylinder cover and air mix, having improved the motor accelerating velocity.
Description of drawings
Fig. 1 is the exploded perspective structural representation of multi-cylinder gas engine gas injector of the present utility model;
Fig. 2 is the main TV structure schematic representation of the decomposition of multi-cylinder gas engine gas injector of the present utility model;
Fig. 3 is that structural representation is looked up in the decomposition of multi-cylinder gas engine gas injector of the present utility model;
Fig. 4 is the main TV structure schematic representation of the assembling of multi-cylinder gas engine gas injector of the present utility model;
Fig. 5 is the right TV structure schematic representation of the assembling of multi-cylinder gas engine gas injector of the present utility model;
Fig. 6 is the use status architecture schematic representation of multi-cylinder gas engine gas injector of the present utility model;
Description of reference numerals:
1-combustion gas air inlet common rail pipe, 11-gas rail air input joint, 12-gaseous-pressure temperature transducer, 13-installs lug, 14-beam, 15-distance sleeve, the 16-cushion block, 2-combustion gas intake manifold, 3 spraymeter metered valves-, the 31-connecting tube, 32-thrust gum cover, 33-nozzle pressing plate, the 331-nozzle receptacle, 34-supporting sleeve, 35-bolt, the 36-packing ring, the 37-air intake branch of the engine.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.It will be appreciated that, mentioned in the following mode of execution of the present utility model " on ", D score, " left side ", " right side ", " front " and " reverse side " be benchmark with the direction shown in each figure all, these words that are used for limiting direction only are for convenience of explanation, do not represent the restriction to the concrete technological scheme of the utility model.
Multi-cylinder gas engine gas injector of the present utility model is by arranging and each cylinder corresponding combustion gas intake manifold that has the spraymeter metered valve respectively, can accurately control each cylinder fuel gas supply, supply with good uniformity, to improve power character and the Economy of motor; And this multi-cylinder gas engine gas injector can be directly with fuel gas injection to entering cylinder after the air inlet of engine cylinder cover and air mix, improving motor and accelerate corresponding speed.
Extremely shown in Figure 5 as Fig. 1, the concrete structure of this multi-cylinder gas engine gas injector comprises: combustion gas air inlet common rail pipe 1 and be vertically set on the combustion gas intake manifold 2 of this combustion gas air inlet common rail pipe 1 downside, and connect the spraymeter metered valve 3 that is located on the combustion gas intake manifold 2.The gas engine combustion gas is entered by an end of combustion gas air inlet common rail pipe 1, by directly fuel gas injection to air inlet and the air of engine cylinder cover being mixed into cylinder with a plurality of cylinders combustion gas intake manifold one to one 2 of gas engine and spraymeter metered valve 3, do not need independent mixer, because more close engine chamber is carried in combustion gas, therefore acceleration responsiveness can significantly improve, and the required combustion gas of each cylinder can both accurately be controlled separately by spraymeter metered valve 3, supply with good uniformity, therefore, the fuel gas supply uniformity between each cylinder also can improve.
The left end of combustion gas air inlet common rail pipe 1 is equipped with gas rail air input joint 11, is provided with O type rubber ring between gas rail air input joint 11 and the combustion gas air inlet common rail pipe 1, and combustion gas enters combustion gas air inlet common rail pipe 11 from gas rail air input joint 11.O type rubber ring is realized fuel gas high efficiency sealing, anti-leak.The right-hand member of combustion gas air inlet common rail pipe 1 is equipped with gaseous-pressure temperature transducer 12, and the two adopts O type seal with elastometic washer mode equally, to realize fuel gas high efficiency sealing, anti-leak.Respectively be distributed with one about the upside of combustion gas air inlet common rail pipe 1 lug 13 is installed, it has the lug of running through mounting hole, realizing two point locations of this fuel gas injection device, or can carry out 3 points, four point locations according to actual conditions; This multi-cylinder gas engine gas injector also comprises: the lug shock-damping structure, it specifically comprises: beam 14, distance sleeve 15 and cushion block 16, beam 14 comprises: rubber bush and the metal basic ring that is positioned at rubber bush one end, when construction bolt wears, the metal basic ring is used for isolating rubber bush and directly contacts with construction bolt, to reduce the inordinate wear of rubber bush, soundness is installed in influence.During installation, the metal basic ring of two beams 14 outwardly by the both sides that lug 13 is installed to establishing, distance sleeve 15 is located in two beams 14, simultaneously, cushion block 16 is positioned at the left side of left side beam 14, and fuel gas injection parts bed hedgehopping is avoided interfering with other parts of motor; This lug shock-damping structure can realize that the installation of this multi-cylinder gas engine gas injector is firm, and reduces its vibration rank, thereby improves the installation reliability of this multi-cylinder gas engine gas injector.
The cylinder number of the number of combustion gas intake manifold 2 and motor is corresponding, and each cylinder that distributes for the combustion gas that will enter combustion gas air inlet common rail pipe 1 carries out work by combustion.
Spraymeter metered valve 3 is high-frequency electromagnetic valve, itself and ECU(Electronic Control Unit) electronic control unit is connected, can by ECU control realize its to each cylinder of motor required combustion gas accurately control distribution, supply with good uniformity, improved power character and the Economy of motor.The inlet end of spraymeter metered valve 3 is connected with combustion gas intake manifold 2, nozzle is suitable according to the complete machine layout design by connecting tube 31() combustion gas is delivered to air intake branch of the engine 37(as shown in Figure 6), with enter cylinder after air mixes, because more close engine chamber is carried in combustion gas, so acceleration responsiveness can significantly improve.Be provided with O type rubber ring and thrust gum cover 32 between spraymeter metered valve 3 and the combustion gas intake manifold 2, O type rubber ring can be realized the fuel gas high efficiency sealing, anti-leak, and thrust gum cover 32 can reduce spraymeter metered valve vibration rank.This multi-cylinder gas engine gas injector also comprises: spraymeter metered valve fastening structure, it specifically comprises: nozzle pressing plate 33, supporting sleeve 34 and bolt 35, nozzle pressing plate 33 is long strip-board shape, axially spaced-apart offers a plurality of nozzle receptacle 331 corresponding with spraymeter metered valve 3 nozzles, the left and right sides side faces at both ends of nozzle pressing plate 33 offered the nail hole respectively, and the side of combustion gas intake manifold 2 has with this crosses the corresponding fastening installation lug that is threaded the hole in nail hole.During assembling, the nozzle of spraymeter metered valve 3 is located in the nozzle receptacle 331, after four bolts 35 passed the nail hole respectively, after supporting sleeve 34 is set on four bolts 35, bolt 35 is spirally connected with the fastening installation lug that is threaded the hole of combustion gas intake manifold 2 again, spraymeter metered valve 3 and combustion gas air inlet common rail pipe 1, combustion gas intake manifold 2 are fixed, be provided with packing ring 36 between supporting sleeve 34 and the nozzle pressing plate 33.34 pairs of spraymeter metered valves 3 of supporting sleeve tighten fixing, and soundness is strong, and is simple in structure, highly versatile.
This multi-cylinder gas engine gas injector can accurately be controlled each cylinder fuel gas supply, supply good uniformity by arranging and each cylinder corresponding combustion gas intake manifold that has the spraymeter metered valve respectively, has improved power character and the Economy of motor; And this multi-cylinder gas engine gas injector can be directly with fuel gas injection to entering cylinder after the air inlet of engine cylinder cover and air mix, having improved the motor accelerating velocity.
More than disclosed only be several specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (8)
1. a multi-cylinder gas engine gas injector is characterized in that, comprising: combustion gas air inlet common rail pipe and be vertically set on the combustion gas intake manifold of described combustion gas air inlet common rail pipe downside, and connect the spraymeter metered valve that is located on the described combustion gas intake manifold; One end of described combustion gas air inlet common rail pipe is tightly locked with gas rail air input joint, and the other end is equipped with the gaseous-pressure temperature transducer, and the upside of described combustion gas air inlet common rail pipe is distributed with the installation lug; The number of described combustion gas intake manifold is corresponding one by one with the cylinder number of motor; Described spraymeter metered valve is connected with ECU, realizes that by ECU control its accurate control to the required combustion gas of each cylinder of motor distributes, and its nozzle is connected with engine air inlet tube.
2. multi-cylinder gas engine gas injector according to claim 1, it is characterized in that: be provided with O type rubber ring between described gas rail air input joint and the combustion gas air inlet common rail pipe, be provided with O type rubber ring between described gaseous-pressure temperature transducer and the combustion gas air inlet common rail pipe, be provided with O type rubber ring between described spraymeter metered valve and the combustion gas intake manifold.
3. multi-cylinder gas engine gas injector according to claim 2 is characterized in that: also be provided with the thrust gum cover between described spraymeter metered valve and the combustion gas intake manifold.
4. multi-cylinder gas engine gas injector according to claim 1, it is characterized in that: also comprise: the lug shock-damping structure, it specifically comprises: beam, distance sleeve and cushion block, described beam comprises: rubber bush and the metal basic ring that is positioned at rubber bush one end, during installation, the metal basic ring of two described beams outwardly by the both sides of described installation lug to establishing, described distance sleeve is located in described two beams, described cushion block is positioned at a side of described beam.
5. multi-cylinder gas engine gas injector according to claim 4, it is characterized in that: described installation lug is two, is laid in the upside of described combustion gas air inlet common rail pipe at interval.
6. multi-cylinder gas engine gas injector according to claim 1, it is characterized in that: described spraymeter metered valve is high-frequency electromagnetic valve.
7. according to each described multi-cylinder gas engine gas injector in the claim 1 to 6, it is characterized in that: also comprise: spraymeter metered valve fastening structure, it specifically comprises: nozzle pressing plate, supporting sleeve and bolt, described nozzle pressing plate is long strip-board shape, axially spaced-apart offers a plurality of nozzle receptacle corresponding with described spraymeter metered valve nozzle, the side faces at both ends of described nozzle pressing plate offered the nail hole respectively, and the side of described combustion gas intake manifold has with described mistake follows closely the corresponding fastening installation lug that is threaded the hole in hole; Described bolt pass described cross the nail hole after, after described supporting sleeve was set on the described bolt, described bolt was spirally connected with the described fastening installation lug of combustion gas intake manifold again.
8. multi-cylinder gas engine gas injector according to claim 7 is characterized in that: be provided with packing ring between described supporting sleeve and the nozzle pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320117300 CN203146186U (en) | 2013-03-15 | 2013-03-15 | Fuel gas ejector of multi-cylinder gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320117300 CN203146186U (en) | 2013-03-15 | 2013-03-15 | Fuel gas ejector of multi-cylinder gas engine |
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| Publication Number | Publication Date |
|---|---|
| CN203146186U true CN203146186U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320117300 Expired - Lifetime CN203146186U (en) | 2013-03-15 | 2013-03-15 | Fuel gas ejector of multi-cylinder gas engine |
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| CN (1) | CN203146186U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485944A (en) * | 2013-08-30 | 2014-01-01 | 广西玉柴机器股份有限公司 | Fuel gas supply system of double-fuel diesel engine |
| CN104047785A (en) * | 2013-03-15 | 2014-09-17 | 广西玉柴机器股份有限公司 | Gas injector for multi-cylinder gas engine |
| CN113250879A (en) * | 2021-05-16 | 2021-08-13 | 苏州腾昂精密机械股份有限公司 | Fuel injector cup unit for connecting fuel injection pipe and manufacturing method thereof |
-
2013
- 2013-03-15 CN CN 201320117300 patent/CN203146186U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047785A (en) * | 2013-03-15 | 2014-09-17 | 广西玉柴机器股份有限公司 | Gas injector for multi-cylinder gas engine |
| CN104047785B (en) * | 2013-03-15 | 2016-12-28 | 广西玉柴机器股份有限公司 | Cylinder gas engine gas injector |
| CN103485944A (en) * | 2013-08-30 | 2014-01-01 | 广西玉柴机器股份有限公司 | Fuel gas supply system of double-fuel diesel engine |
| CN103485944B (en) * | 2013-08-30 | 2016-02-24 | 广西玉柴机器股份有限公司 | Dual-fuel diesel engine gas supply system |
| CN113250879A (en) * | 2021-05-16 | 2021-08-13 | 苏州腾昂精密机械股份有限公司 | Fuel injector cup unit for connecting fuel injection pipe and manufacturing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |