CN2570482Y - Natural gas engine pre-ignition chamber built-in type gas supply apparatus - Google Patents
Natural gas engine pre-ignition chamber built-in type gas supply apparatus Download PDFInfo
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- CN2570482Y CN2570482Y CN 02257567 CN02257567U CN2570482Y CN 2570482 Y CN2570482 Y CN 2570482Y CN 02257567 CN02257567 CN 02257567 CN 02257567 U CN02257567 U CN 02257567U CN 2570482 Y CN2570482 Y CN 2570482Y
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- valve
- natural gas
- precombustion chamber
- precombustion
- burning
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Abstract
The utility model relates to a built-in type natural gas supply device for a precombustion chamber of a natural gas engine, which comprises a gas cylinder cover of an engine; the gas cylinder cover is provided with a gas inlet valve of the engine and a spark plug post; the lower end of the spark plug post is provide with a precombustion cavity, and the precombustion cavity is provided with a spark plug; the gas cylinder cover of the utility model is provided with a precombustion chamber communicated with the precombustion cavity; the inside of a precombustion chamber is provided with a valve body B, the inside of the valve body B is provided with a taper hole B, and the inside of the taper hole B is provided with a one-way valve B; in the precombustion chamber, the gas cylinder cover is provided with a valve body A at the part above the one-way valve B; the inside of the valve body A is provided with a valve body centre hole A and a precombustion gas inlet hole, and the jointing part of the valve body centre hole A and the precombustion gas inlet hole is provided with a one-way valve A. The utility model has the advantages that because a gas supply loop of the precombustion chamber is arranged inside the precombustion chamber and inside the gas cylinder cover, the structure is simple and compact, the installation is convenient, and the operation is reliable; the combustion rate of the natural gas engine is improved, the environmental pollution is little, the fabrication is convenient, and the safe operation can be ensured; moreover, the operation and the adjustment are simple and convenient.
Description
Technical field
The utility model belongs to the motor class, relates in particular to the air feeder of natural gas engine.
Background technique
Rock gas is natural a kind of clean fuel, has abundant natural gas resource in China.Rock gas is compared with fuel such as gasoline, diesel oil, and the kindling temperature height is difficult to light; And velocity of combustion is slow, the delivery temperature height.Thereby the rate of burning that improves natural gas engine is to realize that natural gas engine is efficient, the key technology of clean burning.
For improving the rate of burning of natural gas engine, the natural gas engine combustion technology that grow up the nineties in last century adopts spark ignition type natural gas engine preheating type combustion system, realizes the stratified mixture combustion of natural gas engine; Thereby when improving combustion of natural gas speed, realize lean combustion, reduce delivery temperature and NOx discharging.But this technology only is applied to indivedual large-scale natural gas motors, can't adopt on more natural gas engine.Its major obstacle is to supply with the loop design and the control generation difficulty of rock gas to precombustion chamber.
The one-way valve that in precombustion chamber is supplied with the circuit system of rock gas, adopts a no spring of prior art design, and the natural gas supply pipeline directly is installed on precombustion chamber top.Thereby the high-pressure gas in its cylinder is easy to be back in the precombustion chamber supply air line, produces tempering, makes the motor can not the running of normal reliable ground.And install also extremely inconvenient.Though adopt the design proposal of two one-way valves in the product that has, it will directly be installed on precombustion chamber top by the natural gas supply pipeline, is not easy to install; And the design of the valve body of non-return valve is also unreasonable, can not guarantee one-way valve opening and closing reliably, thereby still make high-pressure gas in the cylinder be easy to get back to flow in the precombustion chamber supply air line, produce tempering, motor can not be turned round on normal reliable ground, also influence the safe handling of motor simultaneously.
Summary of the invention
The purpose of this utility model provides the built-in natural gas supply device of a kind of natural gas engine precombustion chamber, solves an above-mentioned difficult problem, to improve the rate of burning of natural gas engine, satisfy easily manufactured, the needs of aspects such as safe operation.
The purpose of this utility model is to realize like this; The built-in natural gas supply device of a kind of natural gas engine precombustion chamber comprises the cylinder head of motor, and cylinder head is provided with engine intake valve and spark plug post, and the spark plug post lower end is provided with the pre-burning chamber, and place, pre-burning chamber is provided with spark plug.Its cylinder head is provided with the precombustion chamber that is communicated with the pre-burning chamber, is provided with valve B in the precombustion chamber body, is provided with tapered hole B in the valve B, is provided with one-way valve B in the tapered hole B; The cylinder head place on precombustion chamber body internal check valve B top is provided with valve A, is provided with valve body center hole A and pre-burning inlet hole in the valve A, and valve body center hole A and pre-burning inlet hole junction point are provided with one-way valve A.
Because the utility model has adopted above technological scheme, thereby has following advantage:
1, place the air feed loop of precombustion chamber in the precombustion chamber body and cylinder head in, simple and compact for structure, good manufacturability, be convenient to install, reliable operation.
2, the rate of burning of raising natural gas engine, environmental pollution is little, and easily manufactured, guarantees safe operation.
3, operation, to adjust easyly, economical and practical, society and economic benefit are huge.
Description of drawings
Fig. 1 is a kind of shape and structure schematic representation of the present utility model.
Among the figure:
1, precombustion chamber body 2, cylinder head; 3, one-way valve A 4, valve A
5, valve B 6, one-way valve B 7, cylinder body; 8, piston
9, intake valve 10, spark plug 11, spring 12, pre-burning chamber
13, airtight plug B 14, airtight plug A 15, spark plug post 16, tapered hole B
17, valve body center hole A 18, pre-burning inlet hole 19, inlet hole
Embodiment
Below in conjunction with accompanying drawing enforcement of the present utility model is done as detailed below:
In Fig. 1, the built-in natural gas supply device of natural gas engine precombustion chamber comprises the cylinder head 2 of motor, and cylinder head 2 is provided with engine intake valve 9 and spark plug post 15, and spark plug post 15 lower ends are provided with pre-burning chamber 12.12 places, pre-burning chamber are provided with spark plug 10.Be needs mixed, pre-burning, pre-burning chamber 12 is set to the epicone bodily form, following circular arc; Epicone bodily form place connects the inlet hole B19 in spark plug post 15 and pre-burning chamber 12, and following circular arc will mix, the cylinder body 7 of the natural gas transport of pre-burning under the cylinder head 2, for piston 8 working in reciprocating mode, and external outputting power function.Cylinder head 2 is provided with the precombustion chamber body 1 that is communicated with pre-burning chamber 12.
The built-in natural gas supply device of natural gas engine precombustion chamber is provided with the precombustion chamber body 1 that is communicated with pre-burning chamber 12 at spark plug post 15 sidepieces of cylinder head 2.Precombustion chamber body 1 is provided with valve B 5, is provided with through hole in the valve B 5.The bottom is provided with tapered hole B16 in valve B 5 through holes, is provided with one-way valve B6 in the tapered hole B16.For preventing gas leakage, the joining portion of tapered hole B16 and one-way valve B6 is set to the circular arc Line of contact and cooperatively interacts.For making and practical the needs, one-way valve B6 can directly adopt simple ball valve to get final product.Valve B 5 outer ends are provided with airtight plug B13, are used for the rock gas of airtight pre-burning.Cylinder head 2 places on precombustion chamber body 1 internal check valve B6 top are provided with valve A 4, and for making and practical the needs, the Vertical direction that precombustion chamber body 1 internal check valve B6 top is preferably in cylinder head 2 places is provided with valve A 4, and the outer end of valve A 4 is provided with airtight plug A14.Be provided with valve body center hole A17 and pre-burning inlet hole 18 in the valve A 4, valve body center hole A17 and pre-burning inlet hole 18 junction points are provided with one-way valve A3.For preventing gas leakage, one-way valve A3 is made of ball valve and spring; The joining portion of the ball valve of one-way valve A3 and valve body center hole A17 also should be set to the circular arc Line of contact and cooperatively interact to good.Be the needs that prevent to leak gas, can locate to be provided with resistant to elevated temperatures asbestos with airtight plug A14, airtight plug B13 etc. in cylinder head 2, or red copper formula sealing gasket.
The utility model adopts one-way valve B6 to be built in the precombustion chamber body 1 when making and work; Adopt one-way valve A3 to be built in the cylinder head 2.The ball valve of these two one-way valves all has the tapered hole face of circular arc Line of contact to match, and has guaranteed one-way valve opening and closing reliably.
In engine intake process, the gas pressure of valve body 6 inlets is higher than the pressure in the cylinder body 7, and under this pressure difference effect, rock gas enters pre-burning chamber 12 by two one-way valves, with the air mixing in the pre-burning chamber 12, forms rich mixture.
In the engine compresses stroke, pressure in the cylinder block 7 is higher than the gas pressure in the valve body 6, under this pressure difference effect, ball valve has been closed two one-way valves, thereby prevented the time near compression top center, when the rich mixture in the pre-burning chamber 12 was lighted by spark plug 10, high compression ignite gas rotation flow in the pre-burning inlet hole 18, and the tempering fault takes place.In these two one-way valves, the one-way valve B6 that is built in the precombustion chamber body does not have spring, can guarantee reliable operation, and can play high compression ignite gas rotation stream and the effect of quenching of preventing.Place the one-way valve A3 in the cylinder head to be provided with Returnning spring away from precombustion chamber body 1,, guaranteed reliably to supply with rock gases, realize normal, the safety and the reliably working of natural gas engine to pre-burning chamber 12 because of under the effect of two one-way valve dual fail-safes.
Claims (5)
1. built-in natural gas supply device of natural gas engine precombustion chamber, the cylinder head that comprises motor, cylinder head is provided with engine intake valve and spark plug post, the spark plug post lower end is provided with the pre-burning chamber, and place, pre-burning chamber is provided with spark plug, it is characterized in that, cylinder head is provided with the precombustion chamber that is communicated with the pre-burning chamber, be provided with valve B in the precombustion chamber body, be provided with tapered hole B in the valve B, be provided with one-way valve B in the tapered hole B; The cylinder head place on precombustion chamber body internal check valve B top is provided with valve A, is provided with valve body center hole A and pre-burning inlet hole in the valve A, and valve body center hole A and pre-burning inlet hole junction point are provided with one-way valve A.
2. the built-in natural gas supply device of a kind of natural gas engine precombustion chamber according to claim 1 is characterized in that one-way valve B is a ball valve.
3. the built-in natural gas supply device of a kind of natural gas engine precombustion chamber according to claim 1 is characterized in that, the cylinder head place Vertical direction on precombustion chamber body internal check valve B top is provided with valve A, and the outer end of valve A is provided with airtight plug A.
4. the built-in natural gas supply device of a kind of natural gas engine precombustion chamber according to claim 1 is characterized in that one-way valve A is made of ball valve and spring.
5. the built-in natural gas supply device of a kind of natural gas engine precombustion chamber according to claim 1 is characterized in that the precombustion chamber outer end is provided with airtight plug B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02257567 CN2570482Y (en) | 2002-09-29 | 2002-09-29 | Natural gas engine pre-ignition chamber built-in type gas supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02257567 CN2570482Y (en) | 2002-09-29 | 2002-09-29 | Natural gas engine pre-ignition chamber built-in type gas supply apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2570482Y true CN2570482Y (en) | 2003-09-03 |
Family
ID=33725479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02257567 Expired - Fee Related CN2570482Y (en) | 2002-09-29 | 2002-09-29 | Natural gas engine pre-ignition chamber built-in type gas supply apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2570482Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304749C (en) * | 2004-01-16 | 2007-03-14 | 大连理工大学 | Collision spray vortex chamber of internal combustion engine |
| CN1316154C (en) * | 2004-03-18 | 2007-05-16 | 大连理工大学 | Igniting combustion system of engine preburning chamber |
| CN103423050A (en) * | 2012-05-22 | 2013-12-04 | 广西玉柴机器股份有限公司 | Ignition device of natural gas engine |
| CN103573398A (en) * | 2012-07-26 | 2014-02-12 | 广西玉柴机器股份有限公司 | Natural gas engine |
| CN103573476A (en) * | 2012-07-26 | 2014-02-12 | 广西玉柴机器股份有限公司 | Gas pilot injection device |
| CN105318047A (en) * | 2015-11-18 | 2016-02-10 | 中国船舶重工集团公司第七一一研究所 | One-way valve, gas engine prechamber and gas engine |
| CN107429602A (en) * | 2015-04-02 | 2017-12-01 | Mtu 腓特烈港有限责任公司 | Internal combustion engine and the method for running internal combustion engine |
| CN107939517A (en) * | 2017-11-01 | 2018-04-20 | 北京理工大学 | Engine superelevation compression ratio combustion control device and method based on jet initiation |
| WO2018171286A1 (en) * | 2017-03-24 | 2018-09-27 | 潍柴动力股份有限公司 | Spark plug and engine having spark plug |
| CN110410234A (en) * | 2019-06-29 | 2019-11-05 | 潍柴动力股份有限公司 | Natural gas straight spray apparatus and double injection laminating combustion systems with it |
| WO2020207534A1 (en) * | 2019-04-08 | 2020-10-15 | Schaeffler Technologies AG & Co. KG | Arrangement of a spark plug in a spark plug sleeve consisting of a metallic material, and method for manufacturing same |
-
2002
- 2002-09-29 CN CN 02257567 patent/CN2570482Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304749C (en) * | 2004-01-16 | 2007-03-14 | 大连理工大学 | Collision spray vortex chamber of internal combustion engine |
| CN1316154C (en) * | 2004-03-18 | 2007-05-16 | 大连理工大学 | Igniting combustion system of engine preburning chamber |
| CN103423050A (en) * | 2012-05-22 | 2013-12-04 | 广西玉柴机器股份有限公司 | Ignition device of natural gas engine |
| CN103573398A (en) * | 2012-07-26 | 2014-02-12 | 广西玉柴机器股份有限公司 | Natural gas engine |
| CN103573476A (en) * | 2012-07-26 | 2014-02-12 | 广西玉柴机器股份有限公司 | Gas pilot injection device |
| CN107429602A (en) * | 2015-04-02 | 2017-12-01 | Mtu 腓特烈港有限责任公司 | Internal combustion engine and the method for running internal combustion engine |
| CN105318047A (en) * | 2015-11-18 | 2016-02-10 | 中国船舶重工集团公司第七一一研究所 | One-way valve, gas engine prechamber and gas engine |
| WO2018171286A1 (en) * | 2017-03-24 | 2018-09-27 | 潍柴动力股份有限公司 | Spark plug and engine having spark plug |
| CN107939517A (en) * | 2017-11-01 | 2018-04-20 | 北京理工大学 | Engine superelevation compression ratio combustion control device and method based on jet initiation |
| CN107939517B (en) * | 2017-11-01 | 2020-07-10 | 北京理工大学 | Jet ignition-based engine ultrahigh compression ratio combustion control device and method |
| WO2020207534A1 (en) * | 2019-04-08 | 2020-10-15 | Schaeffler Technologies AG & Co. KG | Arrangement of a spark plug in a spark plug sleeve consisting of a metallic material, and method for manufacturing same |
| CN110410234A (en) * | 2019-06-29 | 2019-11-05 | 潍柴动力股份有限公司 | Natural gas straight spray apparatus and double injection laminating combustion systems with it |
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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 |