CN205078335U - Spark plug triggers formula homogeneity compression ignition engine - Google Patents
Spark plug triggers formula homogeneity compression ignition engine Download PDFInfo
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- CN205078335U CN205078335U CN201520832680.3U CN201520832680U CN205078335U CN 205078335 U CN205078335 U CN 205078335U CN 201520832680 U CN201520832680 U CN 201520832680U CN 205078335 U CN205078335 U CN 205078335U
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- cylinder
- spark plug
- compression
- airway pressure
- firing chamber
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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
Abstract
The utility model relates to a spark plug triggers formula homogeneity compression ignition engine, the compression ratio of characterized by engine itself is very low, can not lean on piston compressor to make the gas mixture burning in the cylinder, special part has increased a combustion chamber and pressure boost air flue in the engine cylinder lid, vice fuel sprayer and spark plug have been assembled on the combustion chamber, the compression stroke middle and later periods, it is main, vice fuel sprayer is successively to oil spout in cylinder and the combustion chamber, the spark plug is igniteed, fuel combustion volume in the combustion chamber sharply expands, with the cylinder of impressing of the gas in the pressure boost air flue, make pressure and temperature in the cylinder sharply rise, compression burning on fire takes place for intimate mixing gas in triggering the cylinder. The advantage is that engine control is simple, takes place to compress to catch fire through the indirect intimate mixing gas that triggers in the cylinder of spark plug and burns, ignites rather than directly giving the gas mixture in the cylinder, and the ignition time of engine can the accurate control.
Description
Technical field
The utility model is a kind of spark plug trigger type homogeneity compression-ignition engine, it is characterized in that the compression ratio of motor itself is very low, the mixture combustion in cylinder can not be made by piston compression, specialization is in engine cylinder cover, add a firing chamber and airway pressure, firing chamber is assembled with secondary oil nozzle and spark plug, the compression stroke middle and later periods, main, the first oil spout in backward cylinder and firing chamber of secondary oil nozzle, plug ignition, oil inflame volume in firing chamber sharply expands, by the gas press-in cylinder in airway pressure, pressure and temperature in cylinder is sharply raised, trigger homogeneous charge in cylinder and compression catching fire occurs.Advantage is that engine control is simple, there is compression catching fire in the homogeneous charge indirectly triggered in cylinder by spark plug, instead of directly to the ignition of mixed gas in cylinder, the firing time of motor can accurately control, almost identical with the control of common engine, and whole process pinking can not occur, manufacture cost is suitable with common engine, in tail gas, NOx and PM directly can reach Europe six standard, fuel-saving environmental protection, the Abgasgesetz that satisfied country is more and more stricter.
Background technique
Current automobile emission regulation is more and more stricter, Europe has started to perform Europe six standard, China wants state of enforcement six standard at once, in order to meet harsh Abgasgesetz, there are two kinds of solutions, the first solution increases exhaust aftertreatment, outlet pipe increases ternary catalyzing unit and particle trap, exhaust emissions can reach Europe six standard, but motor manufacture cost and oil consumption can increase a lot, the second solution optimizes engine technology to reduce discharge of poisonous waste, emission problem is solved from discharge source, current Ge great main engine factory all research and develop new environment-protective motor at an input huge sum of money, homogeneity compression-ignition engine and hcci engine greatly amplitude can reduce NOx and PM, but problem cannot solve so far pinking easily to occur and engine load is low etc. always, technology is immature, make hcci engine always cannot volume production, if hcci engine can solve pinking and the low problem of load, the problem of motor exhaust emission will be thoroughly solved from source, only need simple exhaust aftertreatment just can meet Europe six emission standard.
Model utility object and advantage
Object: reduce the comprehensive oil consumption of motor and discharge of poisonous waste, only need to meet Europe six emission standard when simple exhaust aftertreatment.
Advantage: this spark plug trigger type homogeneity compression-ignition engine controls simple, there is compression catching fire in the mixed gas indirectly triggered in cylinder by spark plug, the firing time of motor can accurately control, almost identical with the control of common engine, still stable working not pinking under high loads; Low cost of manufacture, suitable with common engine, lower than Europe six motor; Energy-conserving and environment-protective, in tail gas, NOx and PM directly can reach Europe six emission standard, and oil consumption reduces, the emission regulation demands that satisfied country is more and more stricter.
Model utility content
Spark plug trigger type homogeneity compression-ignition engine (see Fig. 1) of the present utility model, object reduces the comprehensive oil consumption of motor and discharge of poisonous waste, meet Europe six emission standard, it is characterized in that in engine cylinder cover, add a firing chamber and airway pressure, the mixed gas catching fire in cylinder is indirectly triggered by spark plug, the firing time of motor can accurately control, by bent axle (1), connecting rod (2), piston (3), the main body of cylinder (4) and cylinder cap (5) composition motor, motor basic functional principle is identical with common engine, intake duct (8) design is divided into two-way in the cylinder cap (5), one tunnel communicates with cylinder (4) and is controlled the folding of intake duct (8) by primary intake valve (13), an other road communicates with firing chamber (11) and is controlled the folding of itself and firing chamber (11) by secondary intake valve (14), air outlet flue (9) is arranged in the other side of cylinder cap (5), air outlet flue (9) communicates with cylinder (4) and controls its folding (see Fig. 4) by exhaust valve (15), firing chamber (11) communicates (see Fig. 2 by airway pressure (10) with cylinder (4), Fig. 3), firing chamber (11), airway pressure (10) is all arranged in cylinder cap (5), secondary intake valve (14) is assemblied in insert (6), insert (6) is assemblied on cylinder cap (5), primary intake valve (13) and secondary intake valve (14) are controlled by an admission cam shaft, exhaust valve (15) is controlled by exhaust cam shaft, firing chamber (11) are assembled with secondary oil nozzle (16) and spark plug (12), main fuel spray nozzle (17) is assemblied on cylinder cap (5) to cylinder (4) oil spout, compression stroke is early stage, pure air in cylinder (4) is pressed in airway pressure (10), main fuel spray nozzle (17) forms homogeneous charge at compression stroke middle and advanced stage to cylinder (4) oil spout, secondary oil nozzle (16) in compression stroke late period to firing chamber (11) oil spout, then spark plug (12) igniting, oil inflame in firing chamber (11) is by gas press-in cylinder (4) in airway pressure (10), to cylinder (4) supercharging, trigger the homogeneous charge generation homogeneous compression and combustion in cylinder (4).
Aspirating stroke (see Fig. 7): primary intake valve (13), secondary intake valve (14) is opened, piston (3) is descending, air divides two-way to enter cylinder, the first via is through secondary intake valve (14), firing chamber (11) and airway pressure (10) enter in cylinder (4), and the upper stroke waste gas be trapped in wherein is blown in cylinder (4), second tunnel directly enters cylinder through primary intake valve (13), compression stroke: primary intake valve (13), secondary intake valve (14) is closed, piston (3) is up, pure air in cylinder (4) is pressed into airway pressure (10), main fuel spray nozzle (17) at compression stroke middle and advanced stage to cylinder (4) oil spout, secondary oil nozzle (16) in compression stroke late period to firing chamber (11) oil spout, then spark plug (12) igniting, the gas that oil inflame in firing chamber (11) promotes in airway pressure (10) enters cylinder (4), homogeneous charge temperature in cylinder (4) sharply raises, there is compression and combustion, expansion stroke: mixed gas pressure when piston top dead center of homogeneous compression-ignition reaches maximum value, promote piston and move downward acting, exhaust stroke: exhaust valve (15) is opened, portion in cylinder (4) and in airway pressure (10) discharges motor from air outlet flue (9), in next aspirating stroke, waste gas in firing chamber (11) and airway pressure (10) is inhaled in cylinder (4), it is ready for lighting a fire next time that firing chamber (11) is full of fresh air.
Airway pressure (10) (see Fig. 5) front end communicates with firing chamber (11), shape is elongated curvilinear conduit, end is the center of a straightway opening in cylinder (4), airway pressure (10) is designed to curve to increase its length, it is enough thick to ensure middle pure air layer that airway pressure (10) requires enough length, the flame avoiding burned room (11) to go out punctures, if the pressurized air in mesosphere is punctured by flame, flame directly contacts with the homogeneous charge in cylinder (4), the homogeneous charge in cylinder (4) will be caused to be lighted, homogeneous compression and combustion would not be there is, in the oil spout of compression stroke middle and advanced stage exactly in order to allow more air enter airway pressure (10), to increase pure air layer thickness, after fuel oil in spark plug point (12) ignition combustion room (11), the flame of fuel oil pours in airway pressure (10), gas in airway pressure (10) is now divided into three sections (see Fig. 6), first paragraph is that the zone of flame is connected with firing chamber (11), centre is pure air layer, be equivalent to isolation layer flame and homogeneous charge are separated, 3rd section is that homogeneous charge layer is connected with cylinder (4), middle pure air layer and the homogeneous charge layer of the 3rd section all can be pressed in cylinder (4), cylinder (4) pressure and temperature is caused sharply to raise, trigger the homogeneous charge generation homogeneous compression and combustion in cylinder (4).
Pumping chamber (7) at cylinder (4) center (see Fig. 8, Fig. 9), piston (3) top center has a hemispherical Qian Woji pumping chamber (7), face the opening of airway pressure (10), pure air is pressurized room (7) and collects after airway pressure (10) press-in cylinder (4), an air mass is formed in hemispherical shallow nest, now in cylinder (4), form inside and outside two-layer gas, outer circular layer is homogeneous charge layer, inner circular layer is pure air layer, the homogeneous charge that inner circular layer volume constantly increases to the outer circular layer of surrounding extruding makes its temperature raise catching fire, situation shown in Fig. 8 is that the gas in airway pressure (10) is pressed into cylinder (4) by the flame in firing chamber (11), when flame does not enter cylinder (4), namely homogeneous charge in cylinder (4) occurs to compress catching fire, situation shown in Fig. 9 is that flame is by after gas press-in cylinder (4) in airway pressure (10), flame also pours cylinder (4), there is compression catching fire in the homogeneous charge now in cylinder (4), pure air insulating layer is also punctured by flame, remain compression on fire, but not ignition.
The lower surface of cylinder cap (5) is by cylinder (4) end sealing, the region of the lower surface sealing air cylinder (4) of cylinder cap (5) is plane or small cambered surface, compression stroke latter stage, the gas-bearing formation of uniform thickness or approximate uniform thickness is formed at piston (3) top, be conducive to the conglobate air mass of shape in pumping chamber (7), outwards evenly spread from center, the pressure that in cylinder, homogeneous charge compression and combustion produces also can act on piston (3) very equably, and reduces the energy loss of flame spread.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of spark plug trigger type homogeneity compression-ignition engine, the main body of motor is made up of bent axle (1), connecting rod (2), piston (3), cylinder (4) and cylinder cap (5), combuster (11) and airway pressure (10) in cylinder cap (5), pumping chamber (7) are arranged in the middle part of cylinder.
Fig. 2, Fig. 3 are the structure principle charts of spark plug trigger type homogeneity compression-ignition engine, Fig. 2 is C-C sectional view, show the structure of firing chamber (11), airway pressure (10) and spark plug (12), Fig. 3 is B-B sectional view, shows the structure of firing chamber (11), secondary oil nozzle (16), spark plug (12), secondary intake valve (14).
Fig. 4 is the plan view of spark plug trigger type homogeneity compression-ignition engine, show the total arrangement of motor, intake duct (8), air outlet flue (9) is arranged in the both sides of cylinder (4), intake duct (8) is divided into two-way, one tunnel leads directly to cylinder (4), an other road is connected with firing chamber (11), firing chamber (11) is connected with cylinder (4) by airway pressure (10) again, main fuel spray nozzle (17) is used for doing work to motor to cylinder (4) oil spout, secondary oil nozzle (16) to firing chamber (11) oil spout for triggering cylinder catching fire.
Fig. 5 is airway pressure structural drawing, and airway pressure shape is curve slender pipeline, and end is that a straightway is opened on cylinder (4) center.
Fig. 6 is airway pressure operating diagram, and after the fuel oil in spark plug (12) ignition combustion room (11), the gas in airway pressure is divided into three sections, and namely first paragraph is the zone of flame, and centre is pure air layer, and the 3rd section is homogeneous charge layer.
Fig. 7 is the fundamental diagram of spark plug trigger type homogeneity compression-ignition engine, there are air inlet, compression, acting and exhaust four strokes, compression stroke is early stage, pure air in cylinder is pressed into airway pressure (10) and forms pure air insulating layer, main fuel spray nozzle (17) forms homogeneous charge at compression stroke middle and advanced stage to cylinder (4) oil spout, secondary oil nozzle (16) in compression stroke late period to firing chamber (11) oil spout, then spark plug (12) igniting, oil inflame in firing chamber, to cylinder (4) supercharging, triggers homogeneous compression and combustion.
Fig. 8, Fig. 9 are the schematic diagram of homogeneous charge generation compression ignite in cylinder, after mixed gas in airway pressure (10) and air are pressed into cylinder (4), in cylinder (4), formed inside and outside two-layer, outer circular layer is homogeneous charge layer, and inner circular layer is pure air layer, pure air layer outside compressed homogenous mixing gas-bearing formation, make it occur to compress catching fire, there is flame at Fig. 8 center, and the center of Fig. 9 is without flame.
Embodiment
The working principle of spark plug trigger type homogeneity compression-ignition engine: it is on fire that compression occurs the mixed gas indirectly triggered in cylinder (4) by spark plug (12), instead of directly to cylinder (4) interior ignition of mixed gas, the firing time of motor can accurately control, and traditional homogeneity compression-ignition engine (abbreviation hcci engine) cannot directly control firing time, easily there is pinking.
Aspirating stroke: primary intake valve (13), secondary intake valve (14) are opened, piston (3) is descending, air divides two-way to enter cylinder (4), the first via enters cylinder (4) through secondary intake valve (14), firing chamber (11) and airway pressure (10), and the upper stroke waste gas be trapped in wherein is blown in cylinder (4), the second tunnel directly enters cylinder (4) through primary intake valve (13).Pulse to prevent the gas in airway pressure (10), need to close secondary intake valve (14) in advance, early stage at next compression stroke, gas in airway pressure (10) keeps relative static conditions, and the air be convenient in cylinder (4) enters airway pressure (10).
Compression stroke: primary intake valve (13), secondary intake valve (14) is closed, piston (3) is up, pure air in cylinder (4) is pressed into airway pressure (10), main fuel spray nozzle (17) at compression stroke middle and advanced stage to cylinder (4) oil spout, secondary oil nozzle (16) in compression stroke late period to firing chamber (11) oil spout, then spark plug (12) igniting, the gas that oil inflame in firing chamber (11) promotes in airway pressure (10) enters cylinder (4), homogeneous charge temperature in cylinder (4) sharply raises, trigger the homogeneous charge generation compression and combustion in cylinder (4).
Expansion stroke: after triggering homogeneous compression and combustion, mixed gas has burnt instantaneously, produces high pressure promotion piston (3) descending, promotes bent axle (1) and rotates acting, after piston (3) top dead center or top dead center, cylinder pressure reaches maximum value.
Exhaust stroke: when piston (3) lower dead center, exhaust valve (15) is opened, piston (3) is up, waste gas in cylinder (4) is discharged from exhaust valve (15), because the pressure in cylinder (4) reduces, the waste gas in partial boost air flue (10) enters cylinder (4) and discharges motor with air-flow.Waste gas harmful matter in airway pressure (10) is relatively many, but proportion is little, need simple exhaust system process, in next aspirating stroke, the waste gas be trapped in airway pressure (10) is blown in cylinder (4) and again burns, do not produce pollution.
Engine compression ratio: compared with traditional hcci engine, the compression ratio of this motor is very low, the interior mixed gas catching fire of cylinder (4) not can be made by self compression, compression ratio is proper between can being arranged on 8 ~ 11, spontaneous combustion pinking can never be there is, trigger mixed gas compression and combustion in cylinder and entirely provide extra pressure by oil inflame in firing chamber.
Rocket ignition time: compression catching fire occurs the mixed gas indirectly triggered in cylinder (4) by spark plug (12), the firing time of motor can accurately control, and traditional hcci engine cannot directly control firing time, easy generation pinking, because airway pressure (10) has certain length, air-flow enters cylinder (4) can consume some times, time of ignition needs an advance angle, Engine ECU needs the fuel injection quantity of various operating mode and accurately controls firing time, some angles after piston (3) top dead center or top dead center, the pressure of cylinder (4) reaches maximum value.When cylinder (4) interior mixed gas is crossed rare, postpone the injection time of main fuel spray nozzle (17), allowing more air enter airway pressure (10) makes middle pure air layer thicker, increase the fuel injection quantity of secondary oil nozzle (16), the firing time of early spark plug (12), ensure to provide maximum pressure compression ignite weak mixture at top dead center annex; During mixed gas overrich, the injection time of main fuel spray nozzle (17) in advance, be conducive to forming homogeneous charge, reduce the fuel injection quantity of secondary oil nozzle (16), postpone firing time, exhaust casing (4) pressure turning over top dead center at piston (3) reaches maximum, avoids pinking, and mixed gas is denseer, firing time more rearward.
The solution of full-time HCCI: under full-time HCCI and the various speed conditions of the various load of motor, HCCI pattern normally can work and pinking not occur, in high engine load situation, mixed gas can be very dense, even if the very low risk also having pinking of compression ratio, the first solution postpones spark plug (12) firing time, triggers the mixture combustion in cylinder (4) after piston top dead center, and mixed gas denseer firing time more rearward; The second solution adopts valve variable timing, i.e. VVT technology, the phase angle of camshaft is changed when high load, late release primary intake valve (13), secondary intake valve (14) in compression stroke, cylinder (4) interior portion gas can enter intake duct, the length being equivalent to decrease cylinder (4) namely reduces the compression ratio of motor, guarantees pinking not to occur.
Claims (4)
1. a spark plug trigger type homogeneity compression-ignition engine, it is characterized in that by bent axle (1), connecting rod (2), piston (3), the main body of cylinder (4) and cylinder cap (5) composition motor, motor basic functional principle is identical with common engine, intake duct (8) design is divided into two-way in the cylinder cap (5), one tunnel communicates with cylinder (4) and is controlled the folding of intake duct (8) by primary intake valve (13), an other road communicates with firing chamber (11) and is controlled the folding of itself and firing chamber (11) by secondary intake valve (14), air outlet flue (9) is arranged in the other side of cylinder cap (5), air outlet flue (9) communicates with cylinder (4) and controls its folding by exhaust valve (15), firing chamber (11) is communicated with cylinder (4) by airway pressure (10), firing chamber (11), airway pressure (10) is all arranged in cylinder cap (5), secondary intake valve (14) is assemblied in insert (6), insert (6) is assemblied on cylinder cap (5), primary intake valve (13) and secondary intake valve (14) are controlled by an admission cam shaft, exhaust valve (15) is controlled by exhaust cam shaft, firing chamber (11) are assembled with secondary oil nozzle (16) and spark plug (12), main fuel spray nozzle (17) is assemblied on cylinder cap (5) to cylinder (4) oil spout, compression stroke is early stage, pure air in cylinder (4) is pressed in airway pressure (10), main fuel spray nozzle (17) forms homogeneous charge at compression stroke middle and advanced stage to cylinder (4) oil spout, secondary oil nozzle (16) in compression stroke late period to firing chamber (11) oil spout, then spark plug (12) igniting, oil inflame in firing chamber (11) is by gas press-in cylinder (4) in airway pressure (10), to cylinder (4) supercharging, trigger the homogeneous charge generation homogeneous compression and combustion in cylinder (4).
2. spark plug trigger type homogeneity compression-ignition engine as claimed in claim 1, it is characterized in that airway pressure (10) front end communicates with firing chamber (11), shape is elongated curvilinear conduit, end is the center of a straightway opening in cylinder (4), airway pressure (10) is designed to curve to increase its length, after fuel oil in spark plug (12) ignition combustion room (11), the flame of fuel oil pours in airway pressure (10), gas in airway pressure (10) is now divided into three sections, first paragraph is that the zone of flame is connected with firing chamber (11), centre is pure air layer, flame and homogeneous charge are separated, 3rd section is that homogeneous charge layer is connected with cylinder (4), middle pure air layer and the homogeneous charge layer of the 3rd section all can be pressed in cylinder (4), cylinder (4) pressure and temperature is caused sharply to raise, trigger the homogeneous charge generation homogeneous compression and combustion in cylinder (4).
3. spark plug trigger type homogeneity compression-ignition engine as claimed in claim 1, it is characterized in that pumping chamber (7) is at cylinder (4) center, piston (3) top center has a hemispherical Qian Woji pumping chamber (7), face the opening of airway pressure (10), pure air is pressurized room (7) and collects after airway pressure (10) press-in cylinder (4), an air mass is formed in hemispherical shallow nest, now in cylinder (4), form inside and outside two-layer gas, outer circular layer is homogeneous charge layer, inner circular layer is pure air layer, the homogeneous charge that inner circular layer volume constantly increases to the outer circular layer of surrounding extruding makes its temperature raise catching fire.
4. spark plug trigger type homogeneity compression-ignition engine as claimed in claim 1, it is characterized in that the lower surface of cylinder cap (5) is by cylinder (4) end sealing, the region of the lower surface sealing air cylinder (4) of cylinder cap (5) is plane or small cambered surface, compression stroke latter stage, form the gas-bearing formation of uniform thickness or approximate uniform thickness at piston (3) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832680.3U CN205078335U (en) | 2015-10-13 | 2015-10-13 | Spark plug triggers formula homogeneity compression ignition engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832680.3U CN205078335U (en) | 2015-10-13 | 2015-10-13 | Spark plug triggers formula homogeneity compression ignition engine |
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| Publication Number | Publication Date |
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| CN205078335U true CN205078335U (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520832680.3U Expired - Fee Related CN205078335U (en) | 2015-10-13 | 2015-10-13 | Spark plug triggers formula homogeneity compression ignition engine |
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| CN (1) | CN205078335U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567772A (en) * | 2015-10-13 | 2017-04-19 | 梁天宇 | Spark plug trigger type homogeneous compression ignition engine |
| CN115217619A (en) * | 2022-03-17 | 2022-10-21 | 广州汽车集团股份有限公司 | Scavenging device, control method thereof and automobile |
-
2015
- 2015-10-13 CN CN201520832680.3U patent/CN205078335U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567772A (en) * | 2015-10-13 | 2017-04-19 | 梁天宇 | Spark plug trigger type homogeneous compression ignition engine |
| CN106567772B (en) * | 2015-10-13 | 2019-08-02 | 钱爱芬 | A kind of engine |
| CN115217619A (en) * | 2022-03-17 | 2022-10-21 | 广州汽车集团股份有限公司 | Scavenging device, control method thereof and automobile |
| CN115217619B (en) * | 2022-03-17 | 2023-08-08 | 广州汽车集团股份有限公司 | Scavenging device, control method thereof and automobile |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20161013 |
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| CF01 | Termination of patent right due to non-payment of annual fee |