CN116292015A - Compression ignition system with multi-point heating ring - Google Patents
Compression ignition system with multi-point heating ring Download PDFInfo
- Publication number
- CN116292015A CN116292015A CN202310279426.4A CN202310279426A CN116292015A CN 116292015 A CN116292015 A CN 116292015A CN 202310279426 A CN202310279426 A CN 202310279426A CN 116292015 A CN116292015 A CN 116292015A
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- CN
- China
- Prior art keywords
- heating
- heating ring
- fuel
- cylinder
- compression ignition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 84
- 238000007906 compression Methods 0.000 title claims abstract description 25
- 230000006835 compression Effects 0.000 title claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 239000000446 fuel Substances 0.000 claims abstract description 20
- 239000007921 spray Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 22
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
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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
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The invention discloses a compression ignition system with a multi-point heating ring, which comprises a piston, a heating ring, a combustion chamber, a cylinder sleeve, a cylinder body, an avoidance pit and an oil sprayer. The main body part of the heating ring is circular and consists of a heating wire, one or more heating wires and an armor shell; the fuel injector is provided with one or more spray holes, and fuel is sprayed out of the spray holes to form a fuel bundle. One or more heating wires inside the heating ring are formed by connecting heating wires in series, and an armor shell is arranged outside the heating ring for protection; the number of heating wires inside the heating ring is the same as the number of spray holes on the oil sprayer, and the arrangement positions of the heating wires are in one-to-one correspondence with the tail end positions of the oil beam. When the piston is positioned at the top dead center, the heating ring passes through the cylinder body, the cylinder sleeve and the avoiding pit and is arranged in the combustion chamber, a heating source is formed in the cylinder, and air and fuel in the combustion chamber are heated, so that the starting and compression ignition combustion performance of the engine are improved.
Description
Technical Field
The present invention relates to the field of compression ignition combustion of engines, and more particularly to a compression combustion system with multi-point heating.
Background
The diesel engine has higher thermal efficiency and wide application. The combustion mode of the diesel engine adopts a mode of directly injecting fuel into a cylinder in the compression process to ignite, and compared with the traditional gasoline engine, the mixed gas forming process of the diesel engine is characterized in that fuel is injected into the combustion chamber by an oil injector, and the mixed gas is formed by utilizing the movement of air flow in the combustion chamber and high-pressure injection of the oil injector. The diesel fuel is not easy to atomize, particularly in the cold start process, the lower air inlet temperature leads the mixed gas of the diesel engine to be formed worse, the temperature of air in a cylinder is lower, and the ignition performance of the diesel engine is poor. Therefore, how to effectively improve the formation of the diesel engine mixture and heat the mixture is a key to improve the compression combustion.
Disclosure of Invention
In diesel engines, in order to improve the starting problem, glow plug devices are widely used for heating the combustible mixture in the cylinder, however, the glow plugs are arranged on the cylinder head, so that the design of the cylinder head becomes very complex, and the volume of the glow plugs extending into the combustion chamber is small, so that the heating range is limited. The diesel engine mostly adopts a multi-hole oil injector, a plurality of oil bundles are formed through high-pressure injection, a single-point heating glow plug can only heat a certain partial mixed gas in a combustion chamber, and can not heat all the oil bundles one by one, so that uniform compression ignition combustion can not be formed, and the performance of the engine is damaged, and therefore, the heating scheme is not the optimal mode. If a plurality of glow plugs are arranged on the cylinder head, the design of the cylinder head is extremely complicated due to the arrangement of parts such as an intake valve, an exhaust valve, an oil injector, a spark plug and the like on the cylinder head, and the arrangement positions and the arrangement number are limited.
The invention aims to solve the technical problems that a compression combustion system with a multi-point heating ring is invented, so that multi-point heating can be carried out on a specific position of fresh mixed gas in an engine cylinder, the temperature in the cylinder can be improved, fuel oil sprayed by a fuel injector can be heated and atomized, and the formation of the mixed gas of a diesel engine is facilitated, and the invention adopts the following technical scheme:
the invention relates to a compression ignition system with a multi-point heating ring, which comprises a piston, a heating ring, a combustion chamber, a cylinder sleeve, a cylinder body, an avoidance pit and an oil sprayer, and is characterized in that:
the main body part of the heating ring is circular and consists of a heating wire, one or more heating wires and an armor shell;
the avoiding pit is arranged on the piston, so that the piston is prevented from interfering with the heating ring in the reciprocating motion process;
the fuel injector is provided with one or more spray holes, and fuel is sprayed out of the spray holes to form a fuel bundle;
when the piston is positioned at the top dead center, the heating ring passes through the cylinder body, the cylinder sleeve and the avoiding pit and is arranged in the combustion chamber.
The compression ignition system with the multi-point heating ring is characterized in that one or more heating wires inside the heating ring are formed by connecting heating wires in series, and an armor shell is arranged outside the heating ring for protection.
The compression ignition system with the multi-point heating ring is characterized in that the number of heating wires in the heating ring is the same as the number of spray holes on the oil sprayer, and the arrangement positions of the heating wires are in one-to-one correspondence with the tail end positions of the oil bundles.
Compared with the prior art, the invention has the beneficial effects that:
1. the compression ignition system with the multi-point heating ring can carry out multi-point heating on the mixed gas in the engine cylinder, improves the starting performance of a diesel engine and the formation of the mixed gas, and improves the working performance of the engine.
2. The compression ignition system with the multi-point heating ring avoids arranging a heating device on the cylinder cover, and reduces the design and processing difficulty of the cylinder cover.
Drawings
FIG. 1 is a cross-sectional view of a front view of a compression ignition system with a multi-point heating ring according to the present invention with a piston at top dead center;
FIG. 2 is a cross-sectional view of a front view of a compression ignition system with a multi-point heating ring according to the present invention with the piston in the lower portion of the cylinder;
FIG. 3 is a top view of a compression ignition system with a multi-point heating ring in accordance with the present invention.
In the figure: 1. the engine comprises a piston, a heating ring, a combustion chamber, a cylinder sleeve, a cylinder block, a avoiding pit, an oil sprayer, an injection hole, an oil beam, a heating wire and an armor shell.
Detailed Description
As shown in fig. 1, 2 and 3, the compression ignition system with the multi-point heating ring comprises a piston (1), the heating ring (2), a combustion chamber (3), a cylinder sleeve (4), a cylinder body (5), an avoidance pit (6) and an oil sprayer (7); the main body part of the heating ring (2) is annular and consists of a heating wire (10), one or more heating wires (11) and an armor shell (12); the avoiding pit (6) is arranged on the piston (1); the fuel injector (7) is provided with one or a plurality of spray holes (8), and fuel is sprayed out of the spray holes (8) to form a fuel bundle (9).
One or more heating wires (11) inside the heating ring (2) are formed by connecting heating wires (10) in series, and an armor shell (12) is arranged outside the heating ring for protection;
the number of heating wires (11) in the heating ring (2) is the same as the number of spray holes (8) on the oil sprayer (7), the arrangement positions of the heating wires (11) are in one-to-one correspondence with the tail end positions of the oil bundles (9), and one or more heating sources are formed for heating;
the avoiding pit (6) prevents the piston from interfering with the heating ring (2) in the reciprocating motion process.
When the piston (1) is positioned at the top dead center, the heating ring (2) penetrates through the cylinder body (5) and the cylinder sleeve (4), and the avoiding pit (6) is arranged in the combustion chamber (3).
As shown in fig. 1, 2 and 3, during cold start of the engine, the heating ring (2) heats air in the cylinder of the engine and the oil beam (9) sprayed by the oil sprayer (7), so that cold start performance of the engine is improved; when the engine runs under a non-cold starting working condition, the heating ring (2) heats air in the engine cylinder and an oil beam (9) sprayed by the oil sprayer (7), so that fuel atomization and gas mixture formation are accelerated, and the compression ignition combustion performance of the engine is improved.
The operating principle of a compression ignition system with a multi-point heating ring:
as shown in fig. 1, 2 and 3, during cold start of the engine, the heating ring (2) heats the air in the cylinder of the engine and the oil beam (9) injected by the oil injector (7), improving the starting performance of the engine; when the engine runs under a non-cold start working condition, the heating ring (2) heats air in an engine cylinder and an oil beam (9) sprayed by the oil sprayer (7), so that fuel atomization and gas mixture formation are accelerated, and the compression ignition combustion performance of the engine is improved.
Claims (3)
1. The utility model provides a compression ignition system with multiple spot heating ring, includes piston (1), heating ring (2), combustion chamber (3), cylinder liner (4), cylinder block (5), dodges hole (6), sprayer (7), its characterized in that:
the main body part of the heating ring (2) is annular and consists of a heating wire (10), one or more heating wires (11) and an armor shell (12);
the avoiding pit (6) is arranged on the piston (1) to avoid interference between the piston (1) and the heating ring (2) in the reciprocating motion process;
the fuel injector (7) is provided with one or more spray holes (8), and fuel is sprayed out of the spray holes (8) to form a fuel bundle (9);
when the piston (1) is positioned at the top dead center, the heating ring (2) passes through the cylinder body (5), the cylinder sleeve (4) and the avoiding pit (6) and is arranged in the combustion chamber (3).
2. A compression ignition system with a multipoint heating ring according to claim 1, characterized in that one or more heating wires (11) inside the heating ring (2) are connected in series by heating wires (10) and an armoured shell (12) is arranged outside for protection.
3. A compression ignition system with a multi-point heating ring as claimed in claim 1, wherein the number of heating wires (11) in the heating ring (2) is the same as the number of spray holes (8) on the fuel injector (7), and the arrangement positions of the heating wires (11) are in one-to-one correspondence with the tail end positions of the fuel bundles (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310279426.4A CN116292015A (en) | 2023-03-21 | 2023-03-21 | Compression ignition system with multi-point heating ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310279426.4A CN116292015A (en) | 2023-03-21 | 2023-03-21 | Compression ignition system with multi-point heating ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116292015A true CN116292015A (en) | 2023-06-23 |
Family
ID=86781245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310279426.4A Pending CN116292015A (en) | 2023-03-21 | 2023-03-21 | Compression ignition system with multi-point heating ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116292015A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2499748A1 (en) * | 2002-10-02 | 2004-04-15 | Westport Research Inc. | Glow ring ignition assist for internal combustion engine |
| CN1603592A (en) * | 2004-11-19 | 2005-04-06 | 清华大学 | Method of controlling charge compression Ignition of direct spray type gasoline engine homogeneous |
| CN1717541A (en) * | 2002-10-02 | 2006-01-04 | 韦斯特波特研究公司 | Glow ring ignition assist for internal combustion engine |
| KR20060015872A (en) * | 2004-08-16 | 2006-02-21 | 현대자동차주식회사 | Glow plug for diesel engine |
| WO2008148256A1 (en) * | 2007-06-05 | 2008-12-11 | Fan Xu | Two-stroke engine |
| CN105484917A (en) * | 2016-01-14 | 2016-04-13 | 吉林大学 | GDI fuel injector utilizing PTC thermal sensitive ceramic for heating |
| CN113756972A (en) * | 2021-07-23 | 2021-12-07 | 广西大学 | Method for improving thermal efficiency of supercharged Miller cycle engine |
-
2023
- 2023-03-21 CN CN202310279426.4A patent/CN116292015A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2499748A1 (en) * | 2002-10-02 | 2004-04-15 | Westport Research Inc. | Glow ring ignition assist for internal combustion engine |
| CN1717541A (en) * | 2002-10-02 | 2006-01-04 | 韦斯特波特研究公司 | Glow ring ignition assist for internal combustion engine |
| KR20060015872A (en) * | 2004-08-16 | 2006-02-21 | 현대자동차주식회사 | Glow plug for diesel engine |
| CN1603592A (en) * | 2004-11-19 | 2005-04-06 | 清华大学 | Method of controlling charge compression Ignition of direct spray type gasoline engine homogeneous |
| WO2008148256A1 (en) * | 2007-06-05 | 2008-12-11 | Fan Xu | Two-stroke engine |
| CN105484917A (en) * | 2016-01-14 | 2016-04-13 | 吉林大学 | GDI fuel injector utilizing PTC thermal sensitive ceramic for heating |
| CN113756972A (en) * | 2021-07-23 | 2021-12-07 | 广西大学 | Method for improving thermal efficiency of supercharged Miller cycle engine |
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