CN108374739B - Spark plug and fuel sprayer integration device - Google Patents
Spark plug and fuel sprayer integration device Download PDFInfo
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- CN108374739B CN108374739B CN201810137934.8A CN201810137934A CN108374739B CN 108374739 B CN108374739 B CN 108374739B CN 201810137934 A CN201810137934 A CN 201810137934A CN 108374739 B CN108374739 B CN 108374739B
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- spark plug
- oil
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- insulating sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/06—Fuel-injectors combined or associated with other devices the devices being sparking plugs
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- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention discloses an integrated device of a spark plug and an oil nozzle, which comprises the oil nozzle and the spark plug, wherein the oil nozzle comprises a shell and an oil injection pipe, one end of the oil injection pipe is arranged at the oil outlet end of a plastic shell, the spark plug comprises a metal shell, a center electrode and a side electrode matched with the center electrode, the spark plug also comprises an insulating sleeve, the metal shell is sleeved on the insulating sleeve, a through hole is arranged in the center of the insulating sleeve, the other end of the oil injection pipe penetrates through the through hole, the oil injection pipe is in interference fit with the insulating sleeve, the center electrode penetrates through the side wall of the insulating sleeve along the axial direction of the insulating sleeve, the center electrode is positioned at one side of the oil injection pipe, the power connection end of the center electrode is positioned outside the shell, the side electrode is fixed at the position, corresponding to the discharge end of the center electrode, and a spark gap is formed between the side electrode and the center electrode. The device simple structure integrates spark plug and fuel sprayer, realizes the function of oil spout and ignition simultaneously, like the lighter.
Description
Technical Field
The invention relates to the technical field of internal combustion engines, in particular to an integrated device of a spark plug and an oil nozzle.
Background
In the 21 st century, with continuous exploitation and exhaustion of energy, the price rises year by year, and energy conservation is imperative. Moreover, with the improvement of the living standard of people, motor vehicles become the first choice for people to go out, but a large number of motor vehicles get on the road and become one of the main factors of air pollution, so that energy conservation and emission reduction are at hand.
How to completely burn fuel oil is always a goal pursued by engineers, such as: lean combustion, which is simply the point of providing sufficient air to make gasoline burn as completely as possible, is considered to be lean combustion in a gasoline engine where the optimum air-fuel ratio is 14.7:1 and 25:1 is reached or exceeded, but the lean fuel mixture is difficult to ignite.
In recent years, engineers who grind down the brain juice to realize the lean combustion have effective methods of carrying out stratified combustion and changing the shape of the top end of a piston, such as a W-shaped piston, a concave spherical piston and a bowl-shaped piston, firstly, a small amount of gasoline is injected to be mixed with air in an air suction stroke, when a compression stroke approaches the top end, thick oil gas is sprayed to the periphery of a spark plug, the oil gas is surrounded or reflected by the top end of the W-shaped piston, the concave spherical piston or the bowl-shaped piston, so that the locally thick oil gas is ignited in advance, and the surrounding lean mixture is rapidly diffused and ignited. In the practical application process of the method, the process is complex and difficult to operate, and a large amount of specific work needs to be improved urgently.
Disclosure of Invention
Based on the prior art, the invention provides an integrated device of a spark plug and an oil nozzle, which has a simple structure, integrates the spark plug and the oil nozzle, and realizes the functions of oil injection and ignition at the same time, like a lighter.
The technical scheme adopted for realizing the above purpose of the invention is as follows:
the utility model provides a spark plug and fuel sprayer integration device, including fuel sprayer and spark plug, the fuel sprayer includes the casing and spouts the oil pipe, the one end of spouting the oil pipe is installed in the end of producing oil of plastic casing, the spark plug includes metal casing, center electrode and with center electrode matched with side electrode, the spark plug still includes bushing, metal casing suit is on bushing, bushing central authorities are equipped with the perforation, spout the other end of oil pipe and pass the perforation, spout oil pipe and bushing interference fit, center electrode passes bushing's lateral wall along the bushing axial, center electrode is located one side of spouting the oil pipe, center electrode's electrical connection end is located outside the casing, side electrode is fixed in metal casing and corresponds position department with center electrode discharge end, spark gap has between side electrode and the center electrode.
The center electrode is flat.
The central electrode is in a strip plate shape, or the cross section of the central electrode is in an arc shape or a minor arc shape.
The two side electrodes corresponding to the central electrode are symmetrically arranged and are distributed in a splayed shape.
Two central electrodes are symmetrically arranged at two sides of the oil injection pipe.
Compared with the prior art, the invention has the beneficial effects and advantages that:
1. the device integrates the spark plug and the fuel injection nozzle under the condition of not changing the structure of the existing gasoline engine and the condition of not changing the functions and the main structure of the spark plug and the fuel injection nozzle, after the integration, the diameter of the spark plug can become thick, correspondingly, the hole diameter of the position of a cylinder cover where the spark plug is installed can be correspondingly adjusted to become thick, and the functions and the structure of the whole engine are not changed.
2. The oil spraying pipe of the device is positioned in the center, the central electrode and the side electrodes are close to the outlet of the oil spraying pipe, and like a common lighter in real life, the working principle of the central electrode and the side electrodes is the same, and the oil spraying nozzle and the spark plug work simultaneously to form a flame spraying device.
3. The installation position of the device is the same as that of a spark plug before the integration, the device is positioned above the midpoint of the top end of a combustion chamber, and the installation position is special, so that the gasoline engine has a middle direct injection and flame injection function, can ignite and do work with thin gasoline-air mixed gas, can save about 20% of oil, and can improve the effective power and the compression ratio of the engine.
Drawings
Fig. 1 is a schematic structural view of an integrated spark plug and fuel injector device (some parts are omitted for clarity of explanation).
Fig. 2 is a left side view of fig. 1.
The fuel injection device comprises a fuel injection nozzle 1, a spark plug 2, a shell 3, a fuel injection pipe 4, a metal shell 5, a center electrode 6, a side electrode 7, a perforation 8 and an insulating sleeve 9.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The structure of the spark plug and oil nozzle integrated device is shown in figures 1 and 2, the device comprises an oil nozzle 1 and a spark plug 2, the oil nozzle 1 comprises a shell 3 and an oil injection pipe 4, one end of the oil injection pipe 4 is arranged at the oil outlet end of the plastic shell 3, and the shell can be made of plastics and other materials.
The spark plug 2 comprises a metal shell 5, an insulating sleeve 9, a central electrode 6 and a side electrode 7 matched with the central electrode, wherein a through hole 8 is formed in the center of the insulating sleeve 9, the metal shell 5 is sleeved on the insulating sleeve 9, the other end of the oil injection pipe 4 penetrates through the through hole 8, and the oil injection pipe 4 is in interference fit with the insulating sleeve 9. Two central electrodes 6 are provided, the two central electrodes 6 respectively penetrate through two sides of the insulating sleeve 9 along the axial direction of the insulating sleeve, the two central electrodes are symmetrically arranged at two sides of the oil injection pipe 4, and the electric connection ends (namely the electrified ends) of the two central electrodes 6 are respectively positioned outside the shell 3. The side electrodes 7 are four, two of the side electrodes 7 are fixed on the metal shell, the two side electrodes are symmetrically arranged on the outer sides of two ends of one central electrode, the two side electrodes 7 are distributed in a splayed shape, spark gaps are arranged between two ends of the central electrode 6 and the two side electrodes 7 corresponding to the two ends of the central electrode, the other two side electrodes 7 are fixed on the metal shell, the two side electrodes 7 are symmetrically arranged on the outer sides of two ends of the other central electrode 6, the two side electrodes 7 are distributed in a splayed shape, and spark gaps are arranged between two ends of the central electrode 6 and the side electrodes 7 corresponding to the two side electrodes. The number of the central electrodes and the number of the side electrodes can be determined according to factors such as the actual conditions of the central electrodes and the side electrodes, two central electrodes are arranged here, and each central electrode is provided with two side electrodes, so that the sparking efficiency can be improved.
The structure of the oil spray nozzle is not changed, only the size of the oil spray pipe is lengthened on the original basis, so that the oil spray pipe replaces the position of the central electrode of the existing spark plug, the original structure of the spark plug is not changed too much, and after integration, the oil spray pipe replaces the position of the central electrode, and the central electrode is required to be arranged beside the oil spray pipe, so that the size of a metal shell of the spark plug is prevented from being changed too much, the central electrode can be made into a flat shape to reduce the occupied space, such as a strip-shaped plate shape or a shape with an arc shape or a bad arc shape and the like.
Because the spark plug is fragile, needs often to change, proposes to set up to the detachable mode between fuel sprayer and the metal casing, conveniently changes the spark plug.
The oil nozzle and the spark plug of the device work simultaneously, and the device becomes an ignition device, and after the device is transformed, the gasoline engine has the following changes: directly spraying in the middle; the flame throwing function;
for example: when the engine runs at idle speed, a small amount of thin oil mist is injected into a combustion chamber to form thin fuel oil mixture according to the optimal air-fuel ratio of 14.7:1 of the engine and the ratio of more than or equal to 25:1, when the engine enters the end of a compression stroke, a computer controls a spark plug to ignite, and simultaneously ignites the small amount of oil mist synchronously injected by an oil nozzle, and the thin oil mist which cannot be ignited under the conventional condition is ignited to do work by extremely fast diffusion, and the engine has the following two working modes:
the first mode of operation:
when the engine enters the end of the compression stroke, the computer of the engine simultaneously controls the spark plug of the integrated device to ignite, a little quantitative oil mist is sprayed out from the oil spray nozzle of the synchronous integrated device to ignite, and then the diluted mixed gas is ignited to do work by extremely fast diffusion.
The second working mode is as follows:
when the engine works and inhales, a fuel spray nozzle of the integrated device starts to spray a little oil mist in a certain amount, the oil mist can be sprayed for N times (N is more than or equal to 1) in a segmentation mode, the oil mist and the sucked air quickly form mixed thin mixed gas, when the engine enters the tail end of a compression stroke, a computer of the engine simultaneously controls a spark plug of the integrated device to ignite, the little oil mist sprayed by the fuel spray nozzle of the integrated device which is synchronously integrated is ignited and quickly diffused, and the thin mixed gas in the combustion chamber is ignited to do work.
When the diesel engine is changed into the gasoline engine, the gasoline engine is designed to have high compression ratio as the diesel engine, and when the engine runs at idle speed, the second working mode and lean combustion are implemented. When the engine runs at medium and high speed, under the conventional condition, because the compression ratio is overhigh, when the engine enters the middle section of a compression stroke, fuel oil mixed gas can detonate in advance to damage the engine. In order to avoid the situation, firstly, a small amount of thin oil mist is injected in the suction stroke, then the oil mist is injected for N times (N is more than or equal to 0) according to the situation in the process of entering the compression stroke, finally, the temperature of air is sharply increased in the process of compression due to the action of high compression ratio when the air enters the tail end of the compression stroke, namely, when the air is ignited, the air reaches or far exceeds the self-ignition temperature of gasoline, and the ignition time of the engine is controlled through the oil injection of an oil injection nozzle, so that the diesel engine is really changed into the gasoline engine.
In conclusion, the lean combustion technology can save more than 20 percent of oil, after the lean combustion technology is integrated and modified, the gasoline engine is designed to have high compression ratio as the diesel engine, so that the gasoline engine has higher fuel efficiency ratio as the diesel engine, and further saves more than 30 percent of oil.
Compared with the existing gasoline engine, the gasoline engine after being refitted is as follows:
1. compared with a natural air suction engine, the oil injection process of the natural air suction engine can be completed only in an air suction stroke, and after the natural air suction engine is modified, oil injection can be completed not only in the air suction stroke but also in a compression stroke by using the integrated device, so that the oil injection time is greatly prolonged, for example: if the compression ratio of the engine is too high, the situation that the detonation occurs in advance in the compression stroke can occur, and then the oil can be injected in the middle end of the compression stroke, so that the problem can be solved simply.
2. Compared with a direct injection engine, the technological structure requirement of the direct injection engine is higher, the oil nozzle and the cylinder have a certain included angle, the self-lubricating property of gasoline is poor, and the cylinder wall is abraded due to spraying of an injection system. When the direct injection engine runs at an idle speed, because the oil nozzle and the cylinder form a certain included angle, oil mist sprayed by the spraying system is mostly sprayed on the wall of the cylinder, so that the mixing property of the oil mist and air is poor, the combustion of the engine is insufficient, and the carbon deposition increases the shaking of the vehicle. The position of a spark plug is used in the modified combustion chamber, and the oil mist sprayed by direct injection is arranged in the middle of the cylinder, so that the mixing performance is better, the complete combustion is more complete, and the natural combustion efficiency is higher.
3. Compared with the existing middle-placed direct injection engine, the casting design structure of the middle-placed engine is more rigorous in material consumption due to the fact that the oil nozzle and the spark plug form a certain included angle, the technology is owned by only a few manufacturers, and after the middle-placed direct injection engine is modified, the integrated integration device does not need to change the structure of the original engine cylinder body due to the fact that the position of the spark plug at the top end of the engine cylinder body is used (the diesel engine is the position of the oil nozzle), and the middle-placed direct injection engine is simple and practical, low in technical threshold and high in cost performance. More importantly, the oil nozzle and the spark plug in the integrated device have the function of flaming when working simultaneously, and are not possessed by any engine at present.
Claims (1)
1. The utility model provides a spark plug and fuel sprayer integration device, includes fuel sprayer and spark plug, and the fuel sprayer includes casing and spouts oil pipe, and the one end of spouting oil pipe is installed in the play oil end of plastic casing, and the spark plug includes metal casing, central electrode and with central electrode matched with side electrode, its characterized in that: the spark plug also comprises an insulating sleeve, the metal shell is sleeved on the insulating sleeve, a through hole is formed in the center of the insulating sleeve, the other end of the oil injection pipe penetrates through the through hole, and the oil injection pipe is in interference fit with the insulating sleeve;
the central electrodes are flat, the cross section of each central electrode is in a shape of a minor arc, the number of the central electrodes is two, the two central electrodes respectively penetrate through the side wall of the insulating sleeve along the axial direction of the insulating sleeve, the two central electrodes are symmetrically arranged on the two sides of the oil injection pipe, the electric connection ends of the two central electrodes are respectively positioned outside the shell, the occupied space of the central electrodes is greatly reduced, and the excessive change of the size of the spark plug can be avoided;
the side electrodes are L-shaped, a pair of side electrodes corresponding to the central electrodes are arranged, the two side electrodes of each pair of side electrodes are symmetrically arranged, the two side electrodes of each pair of side electrodes are distributed in a splayed shape, the ends, far away from the two side electrodes, of each pair of side electrodes are respectively fixed on the metal shell, the ends, near to the two side electrodes, of each pair of side electrodes are respectively close to the two ends of the arc of the corresponding central electrode, spark gaps are respectively arranged between the two side electrodes of each pair of side electrodes and the two ends of the arc of the corresponding central electrode, and the number of the side electrodes is four, so that the sparking efficiency is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810137934.8A CN108374739B (en) | 2018-02-10 | 2018-02-10 | Spark plug and fuel sprayer integration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810137934.8A CN108374739B (en) | 2018-02-10 | 2018-02-10 | Spark plug and fuel sprayer integration device |
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| Publication Number | Publication Date |
|---|---|
| CN108374739A CN108374739A (en) | 2018-08-07 |
| CN108374739B true CN108374739B (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810137934.8A Active CN108374739B (en) | 2018-02-10 | 2018-02-10 | Spark plug and fuel sprayer integration device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2230478Y (en) * | 1994-12-28 | 1996-07-03 | 吴飞 | Spark plug |
| CN1264944A (en) * | 1999-02-22 | 2000-08-30 | 焦保民 | Spark plug |
| US20080072871A1 (en) * | 2004-05-18 | 2008-03-27 | Robert Bosch Gmbh | Fuel Injector Having an Integrated Ignition Device |
| CN103850847A (en) * | 2014-03-31 | 2014-06-11 | 长城汽车股份有限公司 | Diesel injector of integrated corona igniting device |
| CN107332109A (en) * | 2017-04-26 | 2017-11-07 | 周向进 | The spark plug and its internal combustion engine and automobile of a kind of flame |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0814139A (en) * | 1994-06-30 | 1996-01-16 | Nippondenso Co Ltd | Fuel injection valve integrated with ignition plug |
-
2018
- 2018-02-10 CN CN201810137934.8A patent/CN108374739B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2230478Y (en) * | 1994-12-28 | 1996-07-03 | 吴飞 | Spark plug |
| CN1264944A (en) * | 1999-02-22 | 2000-08-30 | 焦保民 | Spark plug |
| US20080072871A1 (en) * | 2004-05-18 | 2008-03-27 | Robert Bosch Gmbh | Fuel Injector Having an Integrated Ignition Device |
| CN103850847A (en) * | 2014-03-31 | 2014-06-11 | 长城汽车股份有限公司 | Diesel injector of integrated corona igniting device |
| CN107332109A (en) * | 2017-04-26 | 2017-11-07 | 周向进 | The spark plug and its internal combustion engine and automobile of a kind of flame |
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| Publication number | Publication date |
|---|---|
| CN108374739A (en) | 2018-08-07 |
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Effective date of registration: 20221222 Address after: 276000 208, Building 3, Science and Technology Mansion, the south of the west section of Shuangyueyuan Road, Linyi Hi tech Industrial Development Zone, Shandong Province Patentee after: Linyi high tech talent education development group Co.,Ltd. Address before: 430077 No. 203, floor 2, unit 1, building 20, No. 136, Zhongbei Road, Wuchang District, Wuhan City, Hubei Province Patentee before: Dai Xichun |
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Effective date of registration: 20230324 Address after: 325000 312, auxiliary building, complex building, No. 366, Jiayi Road, Cangnan Industrial Park, Lingxi Town, Cangnan County, Wenzhou City, Zhejiang Province Patentee after: Wenzhou naidechi EFI Technology Co.,Ltd. Address before: 276000 208, Building 3, Science and Technology Mansion, the south of the west section of Shuangyueyuan Road, Linyi Hi tech Industrial Development Zone, Shandong Province Patentee before: Linyi high tech talent education development group Co.,Ltd. |