CN105909420A - Combustion chamber capable of reducing soot in diesel engine cylinder - Google Patents
Combustion chamber capable of reducing soot in diesel engine cylinder Download PDFInfo
- Publication number
- CN105909420A CN105909420A CN201610420021.8A CN201610420021A CN105909420A CN 105909420 A CN105909420 A CN 105909420A CN 201610420021 A CN201610420021 A CN 201610420021A CN 105909420 A CN105909420 A CN 105909420A
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- China
- Prior art keywords
- combustion chamber
- face
- soot
- diesel engine
- aditus laryngis
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/26—Pistons having combustion chamber in piston head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/24—Pistons having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines
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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 combustion chamber capable of reducing soot in a diesel engine cylinder. The combustion chamber is arranged on the head of a piston and comprises a boss, a bottom groove, a throat portion, an annular step and an annular flow guide face. The boss is arranged in the middle of the bottom of the combustion chamber; the bottom groove is an arc groove and is arranged at the bottom of the combustion chamber around the boss; the throat portion is an annular protrusion and is arranged on the upper middle portion of the combustion chamber, the lower side of the throat portion is linked with the upper side of the bottom groove, and a throat of the combustion chamber is formed by the throat portion; the annular step is arranged on the upper portion of the throat portion, the step face of the annular step inclines outwards, and the lower side of the step face is linked with the upper side of the throat portion; the upper edge of the step face extends upwards to the top face of the head of the piston to form the annular flow guide face, and mixed fuel oil entering an air cylinder cannot impact the area close to the wall face of the air cylinder due to the flow guide of the annular flow guide face; and according to the combustion chamber, the capacity that under the high oil supply pressure, oil and gas mixing is enhanced, and therefore original soot discharging of a diesel engine is reduced can be fully achieved.
Description
Technical field
The present invention relates to piston field, reduce the combustion chamber of soot in cylinder of diesel engine particularly to a kind of.
Background technology
Diesel engine performance and exhaust emissions requirement are improved constantly by national legislation, and this is to combustion system core
The requirement of the piston combustion bowl of one of parts also improves constantly.This requires that combustion chamber is ensureing reliability and resistance to
For a long time on the premise of property, combustion to be made according to the feature rationalization In Cylinder Flow of diesel engine operating condition
Fuel-steam reasonable layout in combustion chamber that oil atomization evaporation is formed, thus reach to make full use of air,
Unburned hydrocarbon and soot, the purpose of raising fuel economy in reducing cylinder.
Environmental Protection in China portion limits for non-rice habitats exhausted pollutant of diesel engine and has issued four stage limit value marks
Accurate.From phase III to fourth stage, mainly reduce particulate matter, different according to engine power section, fall
Low amplitude is about 50%-94%.In order to meet the requirement of fourth stage, it is necessary to the combustion system to diesel engine
Improving, wherein combustion-chamber shape is one of key of combustion system.Phase III burning chamber of diesel engine
Many employing reducing ω shapes, some reducing ω shape can use one little between reducing and piston-top surface
Rank transition so that combustion chamber bore is more than reentrant diameter, thus forms one in the position close to piston-top surface
Individual aditus laryngis.Limiting requirement to meet fourth order exhaust contaminant, diesel engine needs injection system of upgrading
Charge oil pressure.Higher charge oil pressure can make Soot Formation amount decrease, and major part soot is at piston
Time descending by air-flow take out of pit and oxidized fall, be finally reached relatively low soot emissions.But, by supplying
The soot that oil pressure brings reduces contribution also cannot meet the soot range of decrease requirement of fourth stage, and its problem exists
Make fuel oil and soot in combustion chamber in the combustion chamber of former reducing ω shape or the reducing ω shape of band step transition
Interior allocation proportion is the best.Higher charge oil pressure makes injection fuel rate improve, and the fuel delivery duration time contracts
Short, if the combustion chamber of the reducing ω shape of the reducing ω shape of coupling phase III or band step transition,
The ratio of the fuel-steam being so distributed in combustion recess will increase, and generate in making combustion recess
Soot ratio increase.If it addition, combustion-chamber shape is unreasonable, even if improving charge oil pressure, also
Soot cannot be reduced, soot emissions even can be made to deteriorate.
After the charge oil pressure of diesel fuel system improves, the reducing ω shape of existing band step transition
Combustion chamber will be difficult to matched well obtain satisfied burning and exhausting performance therewith.Because, higher fuel feeding
Pressure can increase injection fuel rate, thus shortens injection duration, then within fuel oil injection period with
The time accounting of the oil bundle drop point deflection bottom, combustion chamber that piston movement is corresponding will increase, so being distributed to
The ratio of the fuel-steam in combustion recess will increase.This generates on the one hand making combustion recess
The ratio of soot increases, the soot that on the other hand relative combustion ceiling face area above generates, and is positioned at pit
Interior soot is more difficult oxidized.If expansion stroke cannot by cylinder in soot be reduced to a certain degree,
The amount of soot contained by waste gas that instroke is got rid of will exceed standard.It addition, be distributed in combustion recess
Fuel oil is too much, can make the gaseous mixture overrich in pit, reduces combustion thermal efficiency.
The information being disclosed in this background section is merely intended to increase the reason of the general background to the present invention
Solve, and be not construed as recognizing or imply in any form that this information structure is for this area general technology
Prior art well known to personnel.
Summary of the invention
It is an object of the invention to provide and a kind of reduce the combustion chamber of soot in cylinder of diesel engine, can fully send out
Wave and strengthen air-fuel mixture under high charge oil pressure to reduce the ability of the original soot emissions of diesel engine.
For achieving the above object, the invention provides and a kind of reduce the combustion chamber of soot in cylinder of diesel engine, should
Combustion chamber is arranged on piston crown, and this combustion chamber includes: boss, and this boss is located in the bottom of combustion chamber
Between position；Kerve, it is deep-slotted chip breaker, and kerve is arranged on the bottom of combustion chamber around boss；Aditus laryngis portion,
It is the most protruding, and aditus laryngis portion is arranged on the middle and upper part of combustion chamber, the downside in aditus laryngis portion and the upside of kerve
Linking, the aditus laryngis of formation combustion chamber, aditus laryngis portion；Circular step, it is arranged on the upside in aditus laryngis portion, ring-type
The step surface of step is outward-dipping, and the downside of step surface is connected with the upside in aditus laryngis portion；And annular water conservancy diversion
Face, it is extended upwardly to the end face of piston crown by the top edge of step surface and is formed, and enters in cylinder
Blended fuel oil impacts less than the region near cylinder wall surface due to the water conservancy diversion of annular guide face.
Preferably, the center of circle of aditus laryngis is to the bottom that distance is kerve of end face to the distance of end face
44%～45%, the 78.3%～80% of the opening diameter of a diameter of combustion chamber of aditus laryngis.
Preferably, annular guide face is arc surface, and arc surface seamlessly transits with the top edge of step surface.
Preferably, the center of arc of arc surface is 1.7mm～2.0mm to the distance of end face.
Preferably, step surface is 30 °-45 ° with the angle degree of end face.
Preferably, the table top of boss is 5.5mm～6mm to the distance of end face.
Preferably, the eccentric position of piston crown is located in combustion chamber.
Preferably, boss is the frustum of a cone.
Compared with prior art, there is advantages that will by circular step and aditus laryngis portion
Combustion chamber extension is divided into upper and lower two regions so that part fuel oil both can enter the Ji Liu district of piston-top surface,
These steam distance cylinder wall surface will not be allowed again too near, both can improve kerve and circular step area above
Mixed gas quality can also improve efficiency of combustion, thus improves fuel economy.
Accompanying drawing explanation
Fig. 1 is to reduce the sectional view of the combustion chamber of soot in cylinder of diesel engine according to the present invention；
Fig. 2 is to reduce the top view of the combustion chamber of soot in cylinder of diesel engine according to the present invention；
Fig. 3 is to reduce the use schematic diagram of the combustion chamber of soot in cylinder of diesel engine according to the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in detail, it is to be understood that this
The protection domain of invention is not limited by detailed description of the invention.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " bag
Include " or its conversion as " comprising " or " including " etc. will be understood to comprise stated element or
Part, and do not get rid of other element or other part.
As shown in Figure 1 to Figure 2, according to carbon in a kind of reduction cylinder of diesel engine of the specific embodiment of the invention
The combustion chamber of cigarette, this combustion chamber is arranged on piston crown 1, and this combustion chamber includes boss 7, kerve 6, larynx
Oral area 5, circular step 4 and annular guide face 3.Wherein boss 7 is located at the bottom interposition of combustion chamber
Putting, kerve 6 is deep-slotted chip breaker, and kerve 6 is arranged on the bottom of combustion chamber around boss 7, aditus laryngis portion 5 in
Annular protrusion, aditus laryngis portion 5 is arranged on the middle and upper part of combustion chamber, and the downside in aditus laryngis portion 5 is upper with kerve 6
Side is connected, and aditus laryngis portion 5 forms the aditus laryngis of combustion chamber, and circular step 4 is arranged on the upside in aditus laryngis portion 5,
The step surface of circular step 4 is outward-dipping, and the downside of step surface is connected with the upside in aditus laryngis portion 5, annular
Guide face 3 is extended upwardly to the end face of piston crown 1 by the top edge of step surface and is formed, and this annular is led
Stream interface makes to enter the blended fuel oil in cylinder and impacts due to the water conservancy diversion of this annular guide face less than near gas
The region of cylinder wall surface.
In such scheme, the combustion chamber of this diesel engine is arranged on the end face 2 of piston crown 1, combustion chamber
Lower section be pin-and-hole.Wherein this combustion chamber is sequentially provided with from end face 2 to the bottom of combustion chamber of piston crown 1:
Annular guide face 3, circular step 4, aditus laryngis portion 5, kerve 6 and boss 7.Annular guide face 3 He
Circular step 4 is positioned at top, combustion chamber, and aditus laryngis portion 5 is for being positioned at middle and upper part, combustion chamber, and arc is convex in the form of a ring
Playing shape, circular step 4 is in smoothing junction with annular guide face 3 and aditus laryngis portion 5, aditus laryngis portion 5 opposing pistons
The distance of the distance of the end face 2 of head 1 and the end face 2 of annular guide face 3 opposing pistons head 1 determines
The gradient of the step surface opposing top 2 of circular step 4.Kerve 6 is for being positioned at bottom of combustion chamber edge
Deep-slotted chip breaker, boss 7 is positioned at the central part of bottom of combustion chamber.Further, the present embodiment preferably will
Annular guide face 3 and the end face 2 of piston crown 1 between, between circular step 4 and aditus laryngis portion 5, larynx
Between oral area 5 and kerve 7, between kerve 6 and the boss 7 and side of boss 7 and the top of boss 7
By round-corner transition between face, knuckle R2mm～R6mm.
As Fig. 3 shows, combustion chamber extension is divided into upper and lower two regions by circular step 4 and aditus laryngis portion 5,
Fuel oil enters evaporation behind combustion chamber along injection direction and forms fuel-steam, fuel-steam along injection direction to combustion
Burning locular wall face to advance, fuel-steam will have two flow directions, big portion after arriving at the arc convex in aditus laryngis portion 5
Dividing fuel-steam to flow along circular arc wall towards kerve 6, then the side along boss 7 is rolled up in the middle part of combustion chamber,
Another part fuel-steam flows along circular step 4 to end face 2 direction.Fuel oil arrives in combustion
Region just have generate soot possibility, optimize combustion chamber by aditus laryngis portion 5 and circular step 4
The distributing position of fuel-steam and ratio, thus reduce the purpose of soot emissions.This design can group
Knitting rational air motion, in optimization combustion chamber, mixed gas quality, reinforcement engine fuel fully burn,
Reduce soot emissions.
As a kind of preferred embodiment, the bottom that distance is kerve 6 in the center of circle of aditus laryngis to end face 2 is to top
The 44%～45% of the distance in face 2, is preferably designed for 44.2%, and the opening of a diameter of combustion chamber of aditus laryngis is straight
The 78.3%～80% of footpath.In this programme, the arc radius of aditus laryngis can be designed as 3mm.
As a kind of preferred embodiment, annular guide face 3 is arc surface, arc surface and the top of step surface
Edge seamlessly transits.
As a kind of preferred embodiment, the distance of the center of arc of arc surface to end face 2 be 1.7mm～
2.0mm。
As a kind of preferred embodiment, step surface is 30 °-45 ° with the angle degree of end face 2.It is preferably designed for
30°
As a kind of preferred embodiment, the distance of the table top of boss 7 to end face is 5.5mm～6mm.
As a kind of preferred embodiment, the eccentric position of piston crown 1 is located in combustion chamber.In the present embodiment,
Combustion chamber is preferably disposed to the eccentric position of the end face 2 of piston crown 1 (i.e. in combustion chamber off-centring piston
Heart certain distance, sees Fig. 2), it is also possible to combustion chamber is located at the central part of the end face 2 of piston crown 1
Position.Seeing Fig. 2,8 is the combustion chamber centerline of vertical piston pin-and-hole axis direction, and 9 is parallel pistons pin
The combustion chamber centerline in axially bored line direction, 10 is the piston centreline of parallel pistons pin-and-hole axis direction, 11
Piston centreline for vertical piston pin-and-hole axis direction.
The combustion chamber of soot in the reduction cylinder of diesel engine of the present embodiment, by circular step 4 and aditus laryngis portion 5
Combustion chamber extension is divided into upper and lower two regions.The distance of the end face 2 of aditus laryngis opposing pistons head 1 strengthens,
The fuel-steam making high velocity jet splits into kerve 6 and the ratio in circular step 4 direction in throat location
Rationally, thus improve kerve 6 and the mixed gas quality of circular step 4 area above.So on the one hand, can
To reduce the soot total amount generated in combustion chamber in combustion process, on the other hand make combustion chamber kerve 6 He
The soot ratio of circular step 4 area above is reasonable.Soot in kerve 6 is at kerve 6 and circular step 4
Under guide functions, to middle and upper part, combustion chamber, flowing contacts with high temperature oxygen agent, most of and oxidized.Ring-type
The soot of step 4 area above contact with high temperature oxygen agent under stream effect inverse squeezing, most of oxidized fall,
Finally can obtain low soot raw emissions.
In this programme, due to the setting of annular guide face 3, on the one hand make the opening of combustion chamber to piston
Distance a (seeing Fig. 1) of head 1 radial outside wall is bigger, on the other hand make circular step 4 away from
End face 2 with a certain distance from piston crown 1 has h, i.e. circular step 4 has certain depth (seeing Fig. 1).
Finally so that the bore of this combustion chamber is less, on the upside of aditus laryngis, form the second vortex, this knot simultaneously
Structure makes to flow to the air of the fuel-steam impact there of circular step 4, air-fuel mixture at aditus laryngis
Gas is formed longitudinal in the step surface area above of circular step 4 under the guide functions of annular guide face 3
Eddy current (sees Fig. 3).The effect of the formation and development of this longitudinal turbulence and fuel-steam are along kerve 6
The effect of the longitudinal turbulence that the air in wall impact kerve is formed is similar, i.e. promotes that stepped area oil gas mixes
Close, improve combustion process, reduce Soot Formation amount.It addition, the opening of combustion chamber is to piston crown 1 footpath
Outwards distance a (seeing Fig. 1) of sidewall is bigger, and pollutant is not easily accessible piston ring slit region.
To sum up, in the reduction cylinder of diesel engine of the present embodiment, why the combustion chamber of soot is so designed that combustion room shape
Shape so that part fuel oil both can enter the Ji Liu district of piston-top surface, will not allow again these steam apart from gas
Cylinder wall surface is the nearest.Because the fuel-steam combustion efficiency near cylinder wall surface is bad, the soot of generation is not
Being prone to oxidation, in this programme, annular guide face 3 can reach balance between two above requires.Both may be used
Efficiency of combustion can also be improved improving kerve and circular step 4 area above mixed gas quality, thus carry
High fuel economy.
The aforementioned description to the specific illustrative embodiment of the present invention illustrates that and the purpose of illustration.
These descriptions are not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned
Teaching, can much change and change.The purpose selected exemplary embodiment and describe exists
In explaining the certain principles of the present invention and actual application thereof, so that those skilled in the art can be real
Now and utilize the various different exemplary of the present invention and various different selection and change.
The scope of the present invention is intended to be limited by claims and equivalents thereof.
Claims (8)
1. reducing a combustion chamber for soot in cylinder of diesel engine, this combustion chamber is arranged on piston crown, and it is special
Levying and be, this combustion chamber includes:
Boss, this boss is located at the centre position, bottom of described combustion chamber；
Kerve, it is deep-slotted chip breaker, and described kerve is arranged on the bottom of described combustion chamber around described boss；
Aditus laryngis portion, it is the most protruding, and described aditus laryngis portion is arranged on the middle and upper part of described combustion chamber, described
The downside in aditus laryngis portion is connected with the upside of described kerve, and described aditus laryngis portion forms the aditus laryngis of described combustion chamber；
Circular step, it is arranged on the upside in described aditus laryngis portion, and the step surface of described circular step leans outward
Tiltedly, the downside of described step surface is connected with the upside in described aditus laryngis portion；And
Annular guide face, it is extended upwardly to the end face of described piston crown by the top edge of described step surface
And formed, the blended fuel oil entered in cylinder impacts less than close due to the water conservancy diversion of described annular guide face
The region of cylinder wall surface.
The combustion chamber of soot in reduction cylinder of diesel engine the most according to claim 1, it is characterised in that
The center of circle of described aditus laryngis is to the bottom that distance is described kerve of described end face to the distance of described end face
44%～45%, the 78.3%～80% of the opening diameter of a diameter of described combustion chamber of described aditus laryngis.
The combustion chamber of soot in reduction cylinder of diesel engine the most according to claim 1, it is characterised in that
Described annular guide face is arc surface, and described arc surface seamlessly transits with the top edge of described step surface.
The combustion chamber of soot in reduction cylinder of diesel engine the most according to claim 3, it is characterised in that
The center of arc of described arc surface is 1.7mm～2.0mm to the distance of described end face.
The combustion chamber of soot in reduction cylinder of diesel engine the most according to claim 1, it is characterised in that
Described step surface is 30 °-45 ° with the angle degree of described end face.
The combustion chamber of soot in reduction cylinder of diesel engine the most according to claim 1, it is characterised in that
The table top of described boss is 5.5mm～6mm to the distance of described end face.
The combustion chamber of soot in reduction cylinder of diesel engine the most according to claim 1, it is characterised in that
The eccentric position of described piston crown is located in described combustion chamber.
The combustion chamber of soot in reduction cylinder of diesel engine the most according to claim 1, it is characterised in that
Described boss is the frustum of a cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610420021.8A CN105909420A (en) | 2016-06-14 | 2016-06-14 | Combustion chamber capable of reducing soot in diesel engine cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610420021.8A CN105909420A (en) | 2016-06-14 | 2016-06-14 | Combustion chamber capable of reducing soot in diesel engine cylinder |
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| CN105909420A true CN105909420A (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610420021.8A Pending CN105909420A (en) | 2016-06-14 | 2016-06-14 | Combustion chamber capable of reducing soot in diesel engine cylinder |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747513A (en) * | 2017-09-30 | 2018-03-02 | 东风商用车有限公司 | A kind of large diesel engine stepped ramp type combustion chamber |
| CN108412603A (en) * | 2018-04-25 | 2018-08-17 | 江苏四达动力机械集团有限公司 | Piston combustion chamber structure |
| CN108518287A (en) * | 2018-03-29 | 2018-09-11 | 天津中恒动力研究院有限公司 | Piston and engine assembly |
| CN109372650A (en) * | 2018-11-29 | 2019-02-22 | 汽解放汽车有限公司 | The piston-top surface structure of soot in a kind of reduction cylinder of diesel engine |
| CN109404156A (en) * | 2018-12-10 | 2019-03-01 | 广西玉柴机器股份有限公司 | The combustion chamber of diesel engine with direct injection |
| CN109931179A (en) * | 2017-11-20 | 2019-06-25 | 曼卡车和巴士股份公司 | Especially it is used for the piston of HPDI diesel oil gas internal-combustion engine |
| CN110118120A (en) * | 2018-02-07 | 2019-08-13 | 丰田自动车株式会社 | Internal combustion engine |
| CN110392771A (en) * | 2017-03-17 | 2019-10-29 | 斯堪尼亚商用车有限公司 | Piston for internal combustion engine |
| GB2581329A (en) * | 2019-02-04 | 2020-08-19 | Jaguar Land Rover Ltd | Piston crown |
| CN112112725A (en) * | 2020-09-28 | 2020-12-22 | 华中科技大学 | Combustion chamber system suitable for high-power-density diesel engine |
| CN112879148A (en) * | 2021-01-25 | 2021-06-01 | 华中科技大学 | Asymmetric combustion chamber system suitable for high power density diesel engine |
| CN113482762A (en) * | 2021-07-30 | 2021-10-08 | 东风商用车有限公司 | Combustion chamber and combustion system of medium-heavy diesel engine |
| CN114352431A (en) * | 2022-03-17 | 2022-04-15 | 潍柴动力股份有限公司 | Piston and engine |
| CN114514366A (en) * | 2019-09-27 | 2022-05-17 | 梅赛德斯-奔驰集团股份公司 | Reciprocating piston engine for a motor vehicle and piston for a reciprocating piston engine |
| CN116398314A (en) * | 2023-03-27 | 2023-07-07 | 一汽解放汽车有限公司 | Diesel engine combustion chamber, piston and diesel engine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201297216Y (en) * | 2008-12-05 | 2009-08-26 | 江铃汽车股份有限公司 | Automobile engine piston |
| CN201679576U (en) * | 2010-03-30 | 2010-12-22 | 山东滨州渤海活塞股份有限公司 | Integral aluminium-alloy piston bearing explosion pressure of 20MPa and having inner-cooling structure |
| DE102011017479A1 (en) * | 2011-04-19 | 2012-10-25 | Daimler Ag | Internal combustion engine |
| DE102011119215A1 (en) * | 2011-11-23 | 2013-05-23 | Daimler Ag | Combustion method and internal combustion engine |
| CN103670775A (en) * | 2012-09-14 | 2014-03-26 | 斗山英维高株式会社 | Combustion Bowl Shape Of Direct Injection Diesel Engine For Reducing The Soot Emission |
| CN203717149U (en) * | 2013-12-09 | 2014-07-16 | 潍柴动力股份有限公司 | Diesel engine air cylinder piston and diesel engine using piston |
| US20150354439A1 (en) * | 2014-06-09 | 2015-12-10 | Mazda Motor Corporation | Combustion chamber structure for diesel engine |
| CN205225485U (en) * | 2015-12-30 | 2016-05-11 | 广西玉柴机器股份有限公司 | Combustion chamber of diesel engine |
| CN205663527U (en) * | 2016-06-14 | 2016-10-26 | 广西玉柴机器股份有限公司 | Combustion chamber of interior soot of diesel engine cylinder reduces |
-
2016
- 2016-06-14 CN CN201610420021.8A patent/CN105909420A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201297216Y (en) * | 2008-12-05 | 2009-08-26 | 江铃汽车股份有限公司 | Automobile engine piston |
| CN201679576U (en) * | 2010-03-30 | 2010-12-22 | 山东滨州渤海活塞股份有限公司 | Integral aluminium-alloy piston bearing explosion pressure of 20MPa and having inner-cooling structure |
| DE102011017479A1 (en) * | 2011-04-19 | 2012-10-25 | Daimler Ag | Internal combustion engine |
| DE102011119215A1 (en) * | 2011-11-23 | 2013-05-23 | Daimler Ag | Combustion method and internal combustion engine |
| CN103670775A (en) * | 2012-09-14 | 2014-03-26 | 斗山英维高株式会社 | Combustion Bowl Shape Of Direct Injection Diesel Engine For Reducing The Soot Emission |
| CN203717149U (en) * | 2013-12-09 | 2014-07-16 | 潍柴动力股份有限公司 | Diesel engine air cylinder piston and diesel engine using piston |
| US20150354439A1 (en) * | 2014-06-09 | 2015-12-10 | Mazda Motor Corporation | Combustion chamber structure for diesel engine |
| CN205225485U (en) * | 2015-12-30 | 2016-05-11 | 广西玉柴机器股份有限公司 | Combustion chamber of diesel engine |
| CN205663527U (en) * | 2016-06-14 | 2016-10-26 | 广西玉柴机器股份有限公司 | Combustion chamber of interior soot of diesel engine cylinder reduces |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110392771A (en) * | 2017-03-17 | 2019-10-29 | 斯堪尼亚商用车有限公司 | Piston for internal combustion engine |
| CN107747513A (en) * | 2017-09-30 | 2018-03-02 | 东风商用车有限公司 | A kind of large diesel engine stepped ramp type combustion chamber |
| CN109931179B (en) * | 2017-11-20 | 2023-01-03 | 曼卡车和巴士股份公司 | Piston, in particular for an HPDI diesel gas internal combustion engine |
| CN109931179A (en) * | 2017-11-20 | 2019-06-25 | 曼卡车和巴士股份公司 | Especially it is used for the piston of HPDI diesel oil gas internal-combustion engine |
| CN110118120B (en) * | 2018-02-07 | 2021-06-08 | 丰田自动车株式会社 | Internal combustion engine |
| CN110118120A (en) * | 2018-02-07 | 2019-08-13 | 丰田自动车株式会社 | Internal combustion engine |
| CN108518287A (en) * | 2018-03-29 | 2018-09-11 | 天津中恒动力研究院有限公司 | Piston and engine assembly |
| CN108412603B (en) * | 2018-04-25 | 2023-12-05 | 江苏四达动力机械集团有限公司 | Piston combustion chamber structure |
| CN108412603A (en) * | 2018-04-25 | 2018-08-17 | 江苏四达动力机械集团有限公司 | Piston combustion chamber structure |
| CN109372650A (en) * | 2018-11-29 | 2019-02-22 | 汽解放汽车有限公司 | The piston-top surface structure of soot in a kind of reduction cylinder of diesel engine |
| CN109404156A (en) * | 2018-12-10 | 2019-03-01 | 广西玉柴机器股份有限公司 | The combustion chamber of diesel engine with direct injection |
| GB2581329A (en) * | 2019-02-04 | 2020-08-19 | Jaguar Land Rover Ltd | Piston crown |
| GB2581329B (en) * | 2019-02-04 | 2021-06-16 | Jaguar Land Rover Ltd | Piston crown |
| CN114514366A (en) * | 2019-09-27 | 2022-05-17 | 梅赛德斯-奔驰集团股份公司 | Reciprocating piston engine for a motor vehicle and piston for a reciprocating piston engine |
| CN112112725A (en) * | 2020-09-28 | 2020-12-22 | 华中科技大学 | Combustion chamber system suitable for high-power-density diesel engine |
| CN112879148A (en) * | 2021-01-25 | 2021-06-01 | 华中科技大学 | Asymmetric combustion chamber system suitable for high power density diesel engine |
| CN113482762A (en) * | 2021-07-30 | 2021-10-08 | 东风商用车有限公司 | Combustion chamber and combustion system of medium-heavy diesel engine |
| CN114352431A (en) * | 2022-03-17 | 2022-04-15 | 潍柴动力股份有限公司 | Piston and engine |
| CN114352431B (en) * | 2022-03-17 | 2022-06-07 | 潍柴动力股份有限公司 | Piston and engine |
| CN116398314A (en) * | 2023-03-27 | 2023-07-07 | 一汽解放汽车有限公司 | Diesel engine combustion chamber, piston and diesel engine |
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