CN209195567U - A kind of pressurization direct-injection Miller cycle gasoline engine cylinder cover structure and automobile - Google Patents
A kind of pressurization direct-injection Miller cycle gasoline engine cylinder cover structure and automobile Download PDFInfo
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- CN209195567U CN209195567U CN201822249213.4U CN201822249213U CN209195567U CN 209195567 U CN209195567 U CN 209195567U CN 201822249213 U CN201822249213 U CN 201822249213U CN 209195567 U CN209195567 U CN 209195567U
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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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Abstract
The utility model discloses a kind of pressurization direct-injection Miller cycle gasoline engine cylinder cover structures, including cylinder cap ontology, it forms ridge-shaped by two opposed inclined-planes, two inlet valve valve casings and two exhaust valve valve casings are separately positioned on two inclined-planes of cylinder cap ontology, mounting hole of oil sprayer is equipped between two inlet valve valve casings, squish face there are four being set on cylinder cap ontology, including the first squish face being set between two inlet valve valve casings, the second squish face between two exhaust valve valve casings, third squish face and the 4th squish face between opposite inlet valve valve casing and exhaust valve valve casing, contour line of the first squish face by inlet valve valve casing and mounting hole of oil sprayer in cylinder cap ontology bottom surface surrounds.It can maximumlly reduce cylinder cap volume, realize the high compression ratio of engine, improve the in-cylinder tumble flow sports level in valve under low lift.The invention also discloses a kind of automobile, including engine, which includes above-mentioned pressurization direct-injection Miller cycle gasoline engine cylinder cover structure.
Description
Technical field
The utility model relates to automobile engines, and in particular to a kind of pressurization direct-injection Miller cycle gasoline engine cylinder cover structure and
Automobile.
Background technique
With the appearance of six discharge standard of national fourth stage fuel economy regulation and state, major automobile main frame maker sets about out
Exhibition improves the related work of engine and vehicle fuel consumption and emission level.Being pressurized directly jetting gasoline engine can be by further mentioning
Compression ratio is risen to improve oil consumption and reduce discharge, but excessively high compression ratio causes gasoline engine under high load capacity operating condition, pinking hair
Raw frequency increases, and burning explosion pressure is higher, and the mechanical load and thermic load for causing gasoline engine to bear are larger, therefore limit pressure
Contracting ratio is further increased with pressure ratio.If simultaneously use Miller cycle technology, make IC Intake Valve Closes angle be in top dead centre it
Before, throttle opening will be increased to guarantee air inflow for partial load condition, to reduce pumping loss, improve fuel oil warp
Ji property.For high load working condition, Miller cycle technology can reduce effective compression ratio, reduce the pressure of compression top center gas in the jar
Power and temperature, reaching reduces NOx, improves the purpose of discharge.
But the Miller cycle technology that inlet valve early closes and valve stroke shortens will lead to In-Cylinder Flow and die down, and be unfavorable for firing
Burning process, it is therefore necessary to cylinder cover structure be optimized, in-cylinder tumble flow movement is improved, improve mixed Daqu and burning
Process.
Summary of the invention
The purpose of the utility model is to provide a kind of pressurization direct-injection Miller cycle gasoline engine cylinder cover structure and automobiles, can
Maximumlly reduce cylinder cap volume, realize the high compression ratio of engine, improves the in-cylinder tumble flow in valve under low lift and move water
It is flat.
Pressurization direct-injection Miller cycle gasoline engine cylinder cover structure described in the utility model, including cylinder cap ontology, by opposed
Two inclined-planes form ridge-shaped, two inlet valve valve casings and two exhaust valve valve casings are separately positioned on two inclined-planes of cylinder cap ontology
On, it is equipped with mounting hole of oil sprayer between two inlet valve valve casings, sets that there are four squish faces on the cylinder cap ontology, including is set to
The first squish face between two inlet valve valve casings, the second squish face between two exhaust valve valve casings, is respectively arranged on phase
Pair inlet valve valve casing and exhaust valve valve casing between third squish face and the 4th squish face, first squish face is by inlet valve
The contour line of valve casing and mounting hole of oil sprayer in cylinder cap ontology bottom surface surrounds.
Further, the inlet valve valve casing intersects with cylinder cover bottom surface, and inlet valve valve casing and mounting hole of oil sprayer are at cylinder cap bottom
The contour line in face uses circular sliding slopes, and the contour line of the circular arc and mounting hole of oil sprayer is tangent.
Further, the radius of the circular arc is 5 ~ 7mm, is 100 ~ 110 ° with inlet valve valve casing tangent line angle α.
Further, the inlet valve valve casing includes the first inlet valve valve casing and second on the same inclined-plane of cylinder cap ontology
Inlet valve valve casing, the exhaust valve valve casing include first exhaust gate valve shell and second exhaust on another inclined-plane of cylinder cap ontology
Gate valve shell；Third squish face is set between the first inlet valve valve casing and first exhaust gate valve shell, by the first curve and the
Two curves surround, and the first curve and the contour line of the first inlet valve valve casing and first exhaust gate valve shell on cylinder cap are tangent, and second
The radius of curve is equal to cylinder radius；The 4th squish face is set between the second inlet valve valve casing and second exhaust gate valve shell,
It is surrounded by third curve and the 4th curve, and third curve and the second inlet valve valve casing and second exhaust gate valve shell are on cylinder cap
Contour line is tangent, and the 4th sweep is equal to cylinder radius.
Second squish described further face is surrounded by the 5th curve and the 6th curve, and the 5th curve is close to first exhaust gate valve
The contour line setting of shell and second exhaust gate valve shell on cylinder cap, the radius of the 6th curve are equal to cylinder radius.
Further, the cylinder cap ontology is used to fix the top surface of cylinder cover of exhaust valve valve casing with respect under exhaust valve valve casing top edge
Heavy 1 ~ 2mm.
A kind of automobile, including engine, the engine include above-mentioned pressurization direct-injection Miller cycle gasoline engine cylinder cap knot
Structure.
The utility model has the following beneficial effects: compared with prior art
1, the utility model is by four squish faces of setting, and the first squish face being set between two inlet valve valve casings by
The contour line of inlet valve valve casing and mounting hole of oil sprayer in cylinder cap ontology bottom surface surrounds, and reduces cylinder cap volume, increases squish
The flow resistance in area forces air-flow to enter formation large scale tumble motion in cylinder along top surface of cylinder cover.
2, the utility model is by the way that the contour line of inlet valve valve casing to be set as intersecting with cylinder cover bottom surface, and inlet valve valve casing
Contour line with mounting hole of oil sprayer in cylinder cover bottom surface uses circular sliding slopes, and avoiding becomes burning incandescent spot at this, reduces
Risk for knock.
3, cylinder cap ontology by being used to fix the top surface of cylinder cover of exhaust valve valve casing with respect to exhaust valve valve casing by the utility model
Sinking 1 ~ 2mm in top edge sufficiently reduces cylinder cap volume under the premise of not destroying the guide functions of cylinder cap.
4, the second squish face of the utility model is surrounded by the 5th curve and the 6th curve, on the one hand reduces cylinder cap appearance
Product is increased the squish flow at this by the cooperation with piston and acted on, improve Flow field on the other hand in compression top center.
5, the cylinder cover structure of the utility model is simple, it is easy to accomplish high compression ratio leads to cylinder to make up Miller cycle technology
The defect that interior air-flow dies down increases flow resistance using part, and the strategy of cylinder cap water conservancy diversion is made full use of to improve in-cylinder tumble flow movement, technique
Simply.
Detailed description of the invention
Fig. 1 is the top view of the utility model；
Fig. 2 is the isometric structural schematic diagram in a left side of the utility model；
Fig. 3 is the isometric structural schematic diagram in the right side of the utility model；
Fig. 4 is the side view of the utility model.
In figure, 1-cylinder cap ontology, 11-cylinder cover bottom surfaces, 2-inlet valve valve casings, the 21-the first inlet valve valve casing, 22-the
Two inlet valve valve casings, 3-exhaust valve valve casings, 31-first exhaust gate valve shells, 32-second exhaust gate valve shells, 4-fuel injectors peace
Dress hole, 5-circular arcs, the 6-the first squish face, the 7-the second squish face, the 71-the five curve, the 72-the six curve, 8-thirds are squeezed
Gas face, the 81-the first curve, the 82-the second curve, the 9-the four squish face, 91-third curves, the 94-the four curve.
Specific embodiment
It elaborates with reference to the accompanying drawing to the utility model.
Referring to Fig. 1 to Fig. 4, shown in pressurization direct-injection Miller cycle gasoline engine cylinder cover structure, including cylinder cap ontology 1, by
Two opposed inclined-planes form ridge-shaped, and two inlet valve valve casings 2 and two exhaust valve valve casings 3 are separately positioned on cylinder cap ontology 1
On two inclined-planes, mounting hole of oil sprayer 4 is equipped between two inlet valve valve casings 2.The inlet valve valve casing 2 includes being set to cylinder cap sheet
The first inlet valve valve casing 21 and the second inlet valve valve casing 22 on the same inclined-plane of 1 body, the exhaust valve valve casing 3 include being set to cylinder cap
First exhaust gate valve shell 31 and second exhaust gate valve shell 32 on this another inclined-plane of 1 body.
Squish face there are four being set on the cylinder cap ontology, including it is set to the first inlet valve valve casing 21 and the second inlet valve valve casing
The first squish face 6 between 22, the second squish face 7 between first exhaust gate valve shell 31 and second exhaust gate valve shell 32,
Third squish face 8 between the first inlet valve valve casing 21 and first exhaust gate valve shell 31 and it is set to the second inlet valve valve casing 22
The 4th squish face 9 between second exhaust gate valve shell 32.The setting in four squish faces reduces cylinder cap volume, increases squish
The flow resistance in area forces air-flow to enter formation large scale tumble motion in cylinder along top surface of cylinder cover.
Contour line of first squish face 6 by inlet valve valve casing 2 and mounting hole of oil sprayer 4 in 1 bottom surface of cylinder cap ontology encloses
At.The inlet valve valve casing 2 intersects with cylinder cover bottom surface 11, the wheel of inlet valve valve casing 2 and mounting hole of oil sprayer 3 in cylinder cover bottom surface 1
Profile is connected using circular arc 5, and the circular arc 5 and the contour line of mounting hole of oil sprayer 4 are tangent.The radius of the circular arc 5 is 5 ~ 7mm,
It is 100 ~ 110 ° with 2 tangent line angle α of inlet valve valve casing.Being avoided using circular sliding slopes becomes burning incandescent spot at this, reduce
Risk for knock.
Third squish face 8 is surrounded by the first curve 81 and the second curve 82, the first curve 81 and the first air inlet gate valve
The contour line of shell 21 and first exhaust gate valve shell 31 on cylinder cap ontology 1 is tangent, and the radius of the second curve 82 is equal to cylinder radius.
The 4th squish face 9 is surrounded by third curve 91 and the 4th curve 92, third curve 91 and the second inlet valve valve casing 22 and
Contour line of the two exhaust valve valve casings 32 on cylinder cap ontology 1 is tangent, and 92 radius of the 4th curve is equal to cylinder radius.
Second squish face 7 is surrounded by the 5th curve 71 and the 6th curve 72, and the 5th curve 71 is close to first row valve
The contour line setting of valve casing 31 and second exhaust gate valve shell 32 on cylinder cap, the radius of the 6th curve 72 are equal to cylinder radius.The
On the one hand the setting in two squish faces 7 reduces cylinder cap volume, on the other hand in compression top center, increased by the cooperation with piston
Add the squish flow at this to act on, improves Flow field.
The cylinder cap ontology 1 is used to fix the top surface of cylinder cover of exhaust valve valve casing 3 with respect to 2 top edge of exhaust valve valve casing sinking one
Determine height H, height H is 1 ~ 2mm.Under the premise of not destroying the guide functions of cylinder cap, sufficiently reduce cylinder cap volume.
A kind of automobile, including engine, the engine include above-mentioned pressurization direct-injection Miller cycle gasoline engine cylinder cap knot
Structure.
The utility model is exemplarily described above in conjunction with attached drawing, as long as using the method structure of the utility model
The improvement for the various unsubstantialities that think of and technical solution carry out, or the not improved conception and technical scheme by the utility model are straight
It scoops out for other occasions, both is within the protection scope of the present invention.
Claims (7)
1. a kind of pressurization direct-injection Miller cycle gasoline engine cylinder cover structure, including cylinder cap ontology form room by two opposed inclined-planes
Ridged, two inlet valve valve casings and two exhaust valve valve casings are separately positioned on two inclined-planes of cylinder cap ontology, in two inlet valves
Mounting hole of oil sprayer is equipped between valve casing, it is characterised in that: squish face there are four being set on the cylinder cap ontology, including it is set to two
The first squish face between inlet valve valve casing, the second squish face between two exhaust valve valve casings, is respectively arranged on opposite
Third squish face and the 4th squish face between inlet valve valve casing and exhaust valve valve casing, first squish face is by inlet valve valve casing
Contour line with mounting hole of oil sprayer in cylinder cap ontology bottom surface surrounds.
2. pressurization direct-injection Miller cycle gasoline engine cylinder cover structure according to claim 1, it is characterised in that: the inlet valve
Valve casing intersects with cylinder cover bottom surface, and inlet valve valve casing and mounting hole of oil sprayer use circular sliding slopes in the contour line of cylinder cover bottom surface, should
The contour line of circular arc and mounting hole of oil sprayer is tangent.
3. pressurization direct-injection Miller cycle gasoline engine cylinder cover structure according to claim 2, it is characterised in that: the circular arc
Radius is 5 ~ 7mm, is 100 ~ 110 ° with inlet valve valve casing tangent line angle α.
4. pressurization direct-injection Miller cycle gasoline engine cylinder cover structure according to claim 1 or 2, it is characterised in that: it is described into
Valve valve casing includes the first inlet valve valve casing and the second inlet valve valve casing on the same inclined-plane of cylinder cap ontology, the exhaust valve
Valve casing includes the first exhaust gate valve shell and second exhaust gate valve shell on another inclined-plane of cylinder cap ontology,
Third squish face is set between the first inlet valve valve casing and first exhaust gate valve shell, bent by the first curve and second
Line surrounds, and the first curve and the contour line of the first inlet valve valve casing and first exhaust gate valve shell on cylinder cap are tangent, the second curve
Radius be equal to cylinder radius,
The 4th squish face is set between the second inlet valve valve casing and second exhaust gate valve shell, bent by third curve and the 4th
Line surrounds, and third curve and the contour line of the second inlet valve valve casing and second exhaust gate valve shell on cylinder cap are tangent, the 4th curve
Radius be equal to cylinder radius.
5. pressurization direct-injection Miller cycle gasoline engine cylinder cover structure according to claim 4, it is characterised in that: described second squeezes
Gas face is surrounded by the 5th curve and the 6th curve, and the 5th curve is close to first exhaust gate valve shell and second exhaust gate valve shell in cylinder cap
On contour line setting, the radius of the 6th curve is equal to cylinder radius.
6. pressurization direct-injection Miller cycle gasoline engine cylinder cover structure according to claim 1 or 2, it is characterised in that: the cylinder
Lid ontology is used to fix the top surface of cylinder cover of exhaust valve valve casing with respect to 1 ~ 2mm of exhaust valve valve casing top edge sinking.
7. a kind of automobile, including engine, it is characterised in that: the engine includes as claimed in any one of claims 1 to 6
It is pressurized direct-injection Miller cycle gasoline engine cylinder cover structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822249213.4U CN209195567U (en) | 2018-12-29 | 2018-12-29 | A kind of pressurization direct-injection Miller cycle gasoline engine cylinder cover structure and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822249213.4U CN209195567U (en) | 2018-12-29 | 2018-12-29 | A kind of pressurization direct-injection Miller cycle gasoline engine cylinder cover structure and automobile |
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| Publication Number | Publication Date |
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| CN209195567U true CN209195567U (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822249213.4U Active CN209195567U (en) | 2018-12-29 | 2018-12-29 | A kind of pressurization direct-injection Miller cycle gasoline engine cylinder cover structure and automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365139A (en) * | 2018-12-25 | 2020-07-03 | 长城汽车股份有限公司 | Cylinder head and internal combustion engine |
-
2018
- 2018-12-29 CN CN201822249213.4U patent/CN209195567U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365139A (en) * | 2018-12-25 | 2020-07-03 | 长城汽车股份有限公司 | Cylinder head and internal combustion engine |
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