DK181184B1 - A semi-built crankshaft for large turbocharged two-stroke uniflow crosshead internal combustion engine - Google Patents
A semi-built crankshaft for large turbocharged two-stroke uniflow crosshead internal combustion engine Download PDFInfo
- Publication number
- DK181184B1 DK181184B1 DKPA202200143A DKPA202200143A DK181184B1 DK 181184 B1 DK181184 B1 DK 181184B1 DK PA202200143 A DKPA202200143 A DK PA202200143A DK PA202200143 A DKPA202200143 A DK PA202200143A DK 181184 B1 DK181184 B1 DK 181184B1
- Authority
- DK
- Denmark
- Prior art keywords
- main journal
- main bearing
- crank
- section
- journal pin
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 7
- 230000007704 transition Effects 0.000 claims abstract description 10
- 238000003754 machining Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/10—Crankshafts assembled of several parts, e.g. by welding by crimping
-
- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/22—Cranks; Eccentrics
-
- 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
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Claims (10)
1. Halvbygget krumtapaksel (20) til en stor turboladet to-takt længdeskyllet krydshovedforbrændingsmotor med krumtapslag (3) omfattende en — krumtappind (4) med to krumtaparme (5), hvor hver af krumtaparmene (5) har et hul (6), hvilke krumtapslag (3) er forbundet med hinanden ved hjælp af hovedlejesøler (1) med en central hovedlejesølesektion (1b) med en diameter Dc og to cylindriske hovedlejesøleendesektioner (1a) med en diameter Ds og hvilke er indsat i hullet (6) i den tilhørende krumtaparm (5), hvor nævnte krumtapaksel (20) omfatter rundinger (11) for at reducere spændingskoncentrationer i overgangszonerne mellem den centrale hovedlejesølesektion (1b) og hovedlejesøleendesektionerne (1a), hvor i det mindste nogle af de nævnte rundinger (11) i hovedlejesølerne (1) udelukkende er tilvejebragt i den respektive hovedlejesøle (1), kendetegnet ved, at diameteren Ds af hovedlejesøleendesektionerne (1a) er større end diameteren Dc af den centrale hovedlejesølesektion (1b), og nævnte rundinger (11) er udformet i en endeflade (1c) af den respektive hovedlejesøleendesektion (1a) af hovedlejesølen (1), hvilken endeflade (1c) vender mod den centrale hovedlejesølesektion (1b).
2. Halvbygget krumtapaksel ifølge krav 1, kendetegnet ved, at rundingerne (11) er udført som ringformede rundinger (11).
3. Halvbygget krumtapaksel ifølge krav 1 eller 2, kendetegnet ved, at > rundingerne (11) strækker sig hele vejen rundt om hovedlejesølen (1).
4. Halvbygget krumtapaksel ifølge krav 1-3, kendetegnet ved, at rundingerne (11) har en overflade (30), der set i tværsnit omfatter et antal cirkelsektioner (30a, b og c), der hver har en krumningsradius (R1, R2 og R3), hvor vinkelsummen af nævnte antal cirkelsektioner (30a, b og c) er mindst 120 vinkelgrader, fortrinsvis mindst 150 vinkelgrader og mest fortrinsvis mindst 180 vinkelgrader af en fuld cirkel.
DK 181184 B1 12
5. Halvbygget krumtapaksel ifølge krav 4, kendetegnet ved, at overfladen af rundingerne (11), set i tværsnit, omfatter et antal lineære sektioner (30d, 30e).
6. Halvbygget krumtapaksel ifølge krav 1-5, kendetegnet ved, at — hovedlejesøleendesektionerne (la) er forsynet med en ringformet læbe (8), der omgiver den respektive runding (11), hvilken læbe (8) har en passende højde.
7. Halvbygget krumtapaksel ifølge krav 1-6, kendetegnet ved, at forholdet Ds/Dc er i området fra 1,1 til 2.
8. Halvbygget krumtapaksel ifølge et hvilket som helst af de foregående krav, kendetegnet ved, at højden Hr af hver runding (11), set i tværsnit, er mellem 1 og 10 %, mere fortrinsvis mellem 2 og 5 % og mest fortrinsvis ca. 3 % af diameteren Dc af den centrale hovedlejesølesektion (1b) af hovedlejesølen (1).
9. Halvbygget krumtapaksel ifølge et hvilket som helst af de foregående krav, kendetegnet ved, at højden Hi af den ringformede læbe (8) er mellem 0,5 og 5 %, mest foretrukket ca. 1,5 % af diameteren Dc af den centrale hovedlejesølesektion (1b) af hovedlejesølen (1).
10. Halvbygget krumtapaksel ifølge et hvilket som helst af de foregående krav, kendetegnet ved, at diameteren Ds af endesektionerne (la) af hovedlejesølen (1) er mindst 10 %, fortrinsvis 25 % og mest fortrinsvis 50 % større end diameteren Dc af den centrale hovedlejesølesektion (1b) af hovedlejesølen (1).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA202200143A DK181184B1 (en) | 2022-02-22 | 2022-02-22 | A semi-built crankshaft for large turbocharged two-stroke uniflow crosshead internal combustion engine |
| CN202211655913.8A CN116641955A (zh) | 2022-02-22 | 2022-12-22 | 用于大型涡轮增压二冲程单流十字头内燃机的半组合式曲轴 |
| JP2023003438A JP7425234B2 (ja) | 2022-02-22 | 2023-01-13 | 大型ターボ過給式２ストロークユニフロークロスヘッド内燃機関用クランクシャフト |
| KR1020230011670A KR102642310B1 (ko) | 2022-02-22 | 2023-01-30 | 대형 터보차지식 2행정 유니플로 크로스헤드 내연 엔진용 반-제작형 크랭크샤프트 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA202200143A DK181184B1 (en) | 2022-02-22 | 2022-02-22 | A semi-built crankshaft for large turbocharged two-stroke uniflow crosshead internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK202200143A1 DK202200143A1 (en) | 2023-04-12 |
| DK181184B1 true DK181184B1 (en) | 2023-04-12 |
Family
ID=85873517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKPA202200143A DK181184B1 (en) | 2022-02-22 | 2022-02-22 | A semi-built crankshaft for large turbocharged two-stroke uniflow crosshead internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7425234B2 (da) |
| KR (1) | KR102642310B1 (da) |
| CN (1) | CN116641955A (da) |
| DK (1) | DK181184B1 (da) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1136524A (en) * | 1910-04-21 | 1915-04-20 | Krupp Ag | Crank-pin connection. |
| JPS52151218U (da) * | 1976-05-13 | 1977-11-16 | ||
| DE10308124B3 (de) * | 2003-02-26 | 2004-09-23 | Hegenscheidt-Mfd Gmbh & Co. Kg | Verfahren zum Festwalzen von Übergängen zwischen Lagerzapfen und Wangen von Kurbelwellen |
| DK177662B1 (da) * | 2012-11-09 | 2014-02-03 | Man Diesel & Turbo Deutschland | Krumtapaksel, lejeenhed og stor to-cylindret, to-taktsdieselmotor |
| DK180589B1 (en) | 2020-02-26 | 2021-09-23 | Man Energy Solutions Filial Af Man Energy Solutions Se Tyskland | Fuel pump with improved sealing properties |
-
2022
- 2022-02-22 DK DKPA202200143A patent/DK181184B1/en active IP Right Grant
- 2022-12-22 CN CN202211655913.8A patent/CN116641955A/zh active Pending
-
2023
- 2023-01-13 JP JP2023003438A patent/JP7425234B2/ja active Active
- 2023-01-30 KR KR1020230011670A patent/KR102642310B1/ko active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| JP7425234B2 (ja) | 2024-01-30 |
| CN116641955A (zh) | 2023-08-25 |
| DK202200143A1 (en) | 2023-04-12 |
| KR102642310B1 (ko) | 2024-03-04 |
| JP2023122543A (ja) | 2023-09-01 |
| KR20230126185A (ko) | 2023-08-29 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PAT | Application published |
Effective date: 20230412 |
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| PME | Patent granted |
Effective date: 20230412 |