CN105545559A - Diesel engine combustion system - Google Patents
Diesel engine combustion system Download PDFInfo
- Publication number
- CN105545559A CN105545559A CN201510936765.0A CN201510936765A CN105545559A CN 105545559 A CN105545559 A CN 105545559A CN 201510936765 A CN201510936765 A CN 201510936765A CN 105545559 A CN105545559 A CN 105545559A
- Authority
- CN
- China
- Prior art keywords
- diesel engine
- combustion system
- spraying
- combustion chamber
- firing chamber
- 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
Links
Classifications
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a diesel engine combustion system. The diesel engine combustion system comprises an inclined cutting concave angle combustion chamber consisting of a cylinder jacket, a cylinder cover and a piston top, and an oil spraying nozzle projected on the bottom plane of a cylinder and arranged in the center position of the combustion chamber; and spraying holes of the oil spraying nozzle adopt double rows of staggered spraying holes with identical diameters and identical spraying included angles. As the spraying holes of the nozzle adopt two rows of staggered spraying holes with identical diameters and identical spraying included angles, the diesel engine combustion system enables clearances of the combustion chamber 4 and air at the bottom of the combustion chamber 4 to be fully used; when the pressure of a high-pressure common rail system is 140 MPa, and the swirl rate is medium-low, NOx and soot products in the combustion chamber are excellently compromised; and meanwhile, the combustion system is matched with a proper postprocessing system to satisfy the national (European) five emission demands under whole machine declared working conditions and stable thirteen working conditions.
Description
Technical field
The invention belongs to high-efficiency cleaning diesel engine mixed Daqu and combustion field, especially relate to a kind of combustion system of diesel engine.
Background technique
At present, up-to-date (state) Europe five combustion system of diesel engine adopts injection pressure up to 200MPa, single uniform spray orifice, re-entrant angle firing chamber of cutting sth. askew, low swirl rate; Because the high pressure co-rail system of more than jet pressure 200MPa mostly adopts piezoelectric type common-rail injector, piezoelectric type common-rail injector, under the pressure of high cost and the jejune pressure of domestic piezoelectric type high pressure co-rail system relevant control technology, is not promoted at home and applies.
Summary of the invention
In view of this, the present invention is intended to propose a kind of combustion system of diesel engine, adopts the high pressure common rail fuel injection system with electromagnetic valve type common-rail injector, when high pressure co-rail system pressure 140MPa, meets (Europe) state five emissions requirements.
For achieving the above object, technological scheme of the present invention is achieved in that
A kind of combustion system of diesel engine, comprises the firing chamber of cylinder liner, cylinder head and piston head composition; Oil nozzle bottom outstanding cylinder head, oil nozzle is arranged at the central position of firing chamber; The spray orifice of described oil nozzle adopts the included spray angle spray orifice such as double isometrical be crisscross arranged.
Further, described firing chamber is in re-entrant angle shape of cutting sth. askew.
Relative to prior art, combustion system of diesel engine of the present invention has following advantage:
Combustion system of diesel engine of the present invention adopts the included spray angle pattern such as double isometrical of interlaced arrangement due to Nozzle, and the air of firing chamber clearance and bottom of combustion chamber is fully utilized; High pressure co-rail system pressure 140MPa, in low swirl rate time, NO in firing chamber
x, soot product reaches good compromise; Meanwhile, the after-treatment system that this Combustion system matching is suitable meets state (Europe) five emissions requirements at complete machine declared working condition and stable state 13 operating mode.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the combustion system of diesel engine described in the embodiment of the present invention;
The axial schematic diagram of the included spray angle spray orifice arrangements such as Fig. 2 is the double equal aperture described in the embodiment of the present invention;
The radial schematic diagram of the included spray angle spray orifice arrangements such as Fig. 3 is the double equal aperture described in the embodiment of the present invention.
Description of reference numerals:
1-cylinder liner; 2-cylinder head; 3-piston; 4-firing chamber; 5-oil nozzle.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " etc. only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature being limited with " first ", " second " etc.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood by concrete condition.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As Figure 1-3, a kind of combustion system of diesel engine, comprises the firing chamber 4 of cylinder liner 1, cylinder head 2 and piston 3 top composition; The oil nozzle 5 of outstanding cylinder cap bottom plane, oil nozzle 5 is arranged at the central position of fuel chambers 4; The spray orifice of described oil nozzle 5 adopts the included spray angle spray orifice such as double isometrical be crisscross arranged, and the air bottom firing chamber 4 clearance and firing chamber 4 is fully utilized.
Described firing chamber 4 is in re-entrant angle shape of cutting sth. askew.
Oil nozzle 5 is arranged on the center position of firing chamber 4, oil nozzle 5 stretches out the certain height in cylinder head 2 bottom plane, oil nozzle is by the spray orifice of the included spray angle such as double isometrical of interlaced arrangement, as shown in Figures 2 and 3, high pressure fuel with the vaporific inside spraying into the firing chamber 4 formed by cylinder head 2, cylinder liner 1 and piston 3.Because Nozzle adopts the double included spray angle such as isometrical to be interspersed pattern, the air bottom firing chamber 4 clearance and firing chamber 4 is fully utilized; High pressure co-rail system pressure 140MPa, in low swirl rate time, NO in firing chamber
x, soot product reaches good compromise; Through the verification experimental verification of National 863 problem " medium and heavy high power density high-efficiency cleaning diesel engine key technology " problem, the after-treatment system that this Combustion system matching is suitable meets state (Europe) five emissions requirements at complete machine declared working condition and stable state 13 operating mode.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a combustion system of diesel engine comprises: the firing chamber (4) of cylinder liner (1), cylinder head (2) and piston (3) top composition; The oil nozzle (5) of outstanding cylinder bottom plane, oil nozzle (5) is arranged at the central position of firing chamber (4); It is characterized in that: the spray orifice of described oil nozzle (5) adopts the included spray angle pattern such as double isometrical of interlaced arrangement.
2. combustion system of diesel engine according to claim 1, is characterized in that: described firing chamber (4) is in re-entrant angle shape of cutting sth. askew.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936765.0A CN105545559A (en) | 2015-12-14 | 2015-12-14 | Diesel engine combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936765.0A CN105545559A (en) | 2015-12-14 | 2015-12-14 | Diesel engine combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105545559A true CN105545559A (en) | 2016-05-04 |
Family
ID=55825017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510936765.0A Pending CN105545559A (en) | 2015-12-14 | 2015-12-14 | Diesel engine combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105545559A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682235A (en) * | 2020-12-21 | 2021-04-20 | 中国北方发动机研究所(天津) | Engine combustion system based on non-uniform-aperture nozzle |
| CN114353120A (en) * | 2021-12-17 | 2022-04-15 | 中国北方发动机研究所(天津) | Camber surface diversion type combustion chamber suitable for multi-aperture nozzle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2746901A1 (en) * | 1977-01-14 | 1978-07-20 | Sulzer Ag | Fuel injector valve for diesel engine - has nozzle shrunk into needle valve bore which is of constant dia. |
| EP0909893A2 (en) * | 1997-10-14 | 1999-04-21 | Nissan Motor Company, Limited | Direct injection diesel engine |
| DE10026321A1 (en) * | 2000-05-26 | 2001-11-29 | Bosch Gmbh Robert | Fuel injection system and method for injection |
| CN1470758A (en) * | 2003-06-26 | 2004-01-28 | 上海交通大学 | Dimethyl ether engine efficient, ultra-low emission combustion system |
| CN104564468A (en) * | 2014-12-11 | 2015-04-29 | 中国北方发动机研究所(天津) | Diesel nozzle matching part |
| JP2015172357A (en) * | 2014-03-12 | 2015-10-01 | 株式会社日本自動車部品総合研究所 | fuel injection valve |
| CN204921139U (en) * | 2015-08-05 | 2015-12-30 | 南宁市桂发农机制造有限公司 | Directly spout formula diesel engine burner |
-
2015
- 2015-12-14 CN CN201510936765.0A patent/CN105545559A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2746901A1 (en) * | 1977-01-14 | 1978-07-20 | Sulzer Ag | Fuel injector valve for diesel engine - has nozzle shrunk into needle valve bore which is of constant dia. |
| EP0909893A2 (en) * | 1997-10-14 | 1999-04-21 | Nissan Motor Company, Limited | Direct injection diesel engine |
| DE10026321A1 (en) * | 2000-05-26 | 2001-11-29 | Bosch Gmbh Robert | Fuel injection system and method for injection |
| CN1470758A (en) * | 2003-06-26 | 2004-01-28 | 上海交通大学 | Dimethyl ether engine efficient, ultra-low emission combustion system |
| JP2015172357A (en) * | 2014-03-12 | 2015-10-01 | 株式会社日本自動車部品総合研究所 | fuel injection valve |
| CN104564468A (en) * | 2014-12-11 | 2015-04-29 | 中国北方发动机研究所(天津) | Diesel nozzle matching part |
| CN204921139U (en) * | 2015-08-05 | 2015-12-30 | 南宁市桂发农机制造有限公司 | Directly spout formula diesel engine burner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682235A (en) * | 2020-12-21 | 2021-04-20 | 中国北方发动机研究所(天津) | Engine combustion system based on non-uniform-aperture nozzle |
| CN114353120A (en) * | 2021-12-17 | 2022-04-15 | 中国北方发动机研究所(天津) | Camber surface diversion type combustion chamber suitable for multi-aperture nozzle |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |
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| RJ01 | Rejection of invention patent application after publication |