EP1337744A1 - Viertakt-verbrennungsmotor - Google Patents
Viertakt-verbrennungsmotorInfo
- Publication number
- EP1337744A1 EP1337744A1 EP01998720A EP01998720A EP1337744A1 EP 1337744 A1 EP1337744 A1 EP 1337744A1 EP 01998720 A EP01998720 A EP 01998720A EP 01998720 A EP01998720 A EP 01998720A EP 1337744 A1 EP1337744 A1 EP 1337744A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crankcase
- oil
- lubricating oil
- line
- internal combustion
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M3/00—Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/08—Separating lubricant from air or fuel-air mixture before entry into cylinder
-
- 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
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
- F02B33/26—Four-stroke engines characterised by having crankcase pumps
-
- 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
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
Definitions
- the invention relates to a four-stroke internal combustion engine with at least one cylinder, a crankcase pump forming crankcase, which is connected via a valve on the one hand to a supply line for fresh air and on the other hand to a suction pipe connecting the crankcase with an inlet channel of the cylinder, with a container for lubricating oil arranged on a conveying device for lubricating oil, with an oil circuit comprising the crankcase and an oil separator provided in the intake line and with a device for injecting fuel into the intake line or into the combustion chamber of the cylinder.
- crankcase pump To improve the design requirements for the crankcase pump, it is known (DE 37 31 250 C1) to separate the crankcase from an oil pan for receiving lubricating oil which is pumped from the oil pan to the individual bearing points in the form of conventional pressure oil lubrication.
- the pre-compressed combustion air loaded with lubricating oil from the crankcase is fed to the oil pan via a non-return valve, where oil is separated due to the deflection of air around baffles.
- the remaining oil is separated from the combustion air in an oil separator, which is connected between the oil pan and the inlet channel of the cylinder in the intake line.
- the pressure oil lubrication integrates a comparatively large amount of oil into the combustion air flow, which increases the effort required for the " oil separation " .
- the inclusion of the oil pan in the combustion air duct increases the total volume for the pre-compressed combustion air and thus adversely affects the acceleration behavior of the internal combustion engine. Since, with regard to the subsequent oil separation, the lubricating oil should be discharged from the crankcase as quickly as possible in order to avoid swirling of the lubricating oil and thus unnecessary loading of the discharged combustion air with oil, a correspondingly large oil circulation in the oil circuit must be ensured.
- the invention is therefore based on the object of designing a four-stroke internal combustion engine of the type described in such a way that, despite advantageous design requirements for the crankcase pump, good oil lubrication within the crankcase can be ensured with a comparatively small amount of oil, without adverse effects on the acceleration behavior fear of the engine.
- the invention solves the problem in that the connected to the container conveyor has a line for injecting lubricating oil into the crankcase and that the suction line leads to the oil separator bypassing the container.
- lubricating oil is injected into the crankcase, an adequate supply of the moving parts with lubricating oil can be ensured without having to rely on an oil bath or pressure oil lubrication. This means that comparatively small amounts of oil are required, which are distributed in the crankcase via the fresh air drawn into the crankcase. Because of the swirling of the lubricating oil required for the lubrication of the lubrication points in the area of the crankcase, the lubricating oil can have a long residence time in the crankcase, which reduces the necessary oil throughput. Nevertheless, due to the low Ren oil quantities advantageous separation conditions, so that it can be found with an oil separator in the intake pipe between the crankcase and the intake port of the cylinder.
- Lubricating oil from an oil separator chamber of the oil separator can be returned via a return line to the container for lubricating oil, so that the oil circuit closes via this container.
- Another possibility is to connect the oil separator to the crankcase itself via a return line coming from an oil separation chamber, which results in an oil circuit which only comprises the crankcase and the oil separator.
- the conveyor device connected to the container with the line for injecting lubricating oil into the crankcase only serves to compensate for the loss of lubricating oil.
- Essential for a low consumption of lubricating oil is a good separation of the lubricating oil from the pre-compressed combustion air flow.
- the required high separation rate can advantageously be ensured if the oil separator consists of a cyclone separator.
- the lubricating oil can be injected at different points in the crankcase, for example, components with high To supply lubrication needs preferably with lubricating oil, particularly favorable injection conditions result if the line for the lubricating oil is connected at least to a nozzle provided in the region of the mouth of the supply line for the fresh air.
- An additional distribution effect for the lubricating oil can namely be achieved via the fresh air flowing into the crankcase.
- FIG. 1 shows a four-stroke internal combustion engine according to the invention in a schematic section
- FIG. 2 shows an embodiment variant of a four-stroke internal combustion engine according to the invention in a representation corresponding to FIG. 1.
- the cylinder block 1 forms a part 2 of a crankcase 3, the other part is designed as a cover 4.
- the connecting rod 7 of the piston 8 of at least one cylinder 9 is mounted, the cylinder head 10 of which has at least one inlet channel 11 with an inlet valve 12 and one outlet channel 13 with an outlet valve 14.
- the crankcase 3 forms, together with the piston 8, a crankcase pump through which fresh air is drawn in and compressed.
- the crankcase 3 is connected to a supply line 16 for fresh air via a check valve 15.
- an intake line 17 for the combustion air pre-compressed in the crankcase 3 connects to the crankcase 3 via a check valve 18.
- intake line 17 is a Oil separator 19 switched on, which is designed as a cyclone separator with an oil separating chamber 20 into which the branch 21 of the suction line 17 coming from the crankcase 3 opens tangentiaf, while the connecting branch 22 to the inlet duct 11 ensures a central air outlet from the oil separating chamber 20.
- an injection device 23 for fuel is provided, so that a pre-compressed fuel-air mixture is sucked in via the inlet duct 11.
- a return line 24 leads from the oil separating chamber 20 to a container 25 for lubricating oil, which circulates in an oil circuit which comprises a line 27 which can be acted upon by a conveying device 26 and which in the region of the mouth of the Supply line 16 in the crankcase 3 projecting nozzle 28 supplied with lubricating oil.
- the lubricating oil possibly injected into the crankcase 3 via several nozzles, the distribution of which in the crankcase 3 is supported by the fresh air drawn in, ensures adequate oil lubrication within the crankcase 3.
- the return line 24 according to the embodiment according to FIG. 2 does not open in the container 25, but in the crankcase 3 itself, so that the oil circuit through the crankcase 3 bypassing the container 25th Closes via the oil separator 19 with the advantage that the lubricating oil injected from the container 25 into the crankcase 3 is not loaded by fuel which enters the crankcase 3 from the cylinder 9.
- the invention is of course not limited to the illustrated embodiment.
- the fuel injection could not be provided in the area of the intake line 17, but could take place directly in the combustion chamber 29.
- the injection of the lubricating oil in the region of the mouth of the feed line 16 is not mandatory for the fresh air.
- the container 25 for the lubricating oil could be part of another oil circuit of the engine.
- the conveying device 26 for the lubricating oil can also do without an oil pump. In such a case, oil production could be ensured through pressure pulsations.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Valve Device For Special Equipments (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0201100A AT411091B (de) | 2000-11-30 | 2000-11-30 | Viertakt-verbrennungsmotor |
AT20112000 | 2000-11-30 | ||
PCT/AT2001/000384 WO2002044528A1 (de) | 2000-11-30 | 2001-11-28 | Viertakt-verbrennungsmotor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1337744A1 true EP1337744A1 (de) | 2003-08-27 |
EP1337744B1 EP1337744B1 (de) | 2007-08-01 |
Family
ID=3689613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01998720A Expired - Lifetime EP1337744B1 (de) | 2000-11-30 | 2001-11-28 | Viertakt-verbrennungsmotor |
Country Status (11)
Country | Link |
---|---|
US (1) | US7073482B2 (de) |
EP (1) | EP1337744B1 (de) |
JP (1) | JP2004514091A (de) |
CN (1) | CN1239815C (de) |
AT (2) | AT411091B (de) |
AU (2) | AU2002218061B2 (de) |
BR (1) | BR0115846A (de) |
DE (1) | DE50112803D1 (de) |
ES (1) | ES2291382T3 (de) |
HK (1) | HK1060611A1 (de) |
WO (1) | WO2002044528A1 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003216003A1 (en) * | 2003-03-17 | 2004-10-11 | Aktiebolaget Electrolux | A four-stroke engine |
DK176742B1 (da) * | 2004-06-30 | 2009-06-02 | Hans Jensen Lubricators As | Fremgangsmåde og apparat til smöring af cylinderfladerne i store dieselmotorer |
AT414153B (de) | 2004-07-21 | 2006-09-15 | Forschungsgesellschaft Fuer Ve | Viertakt-verbrennungsmotor |
JP4546206B2 (ja) * | 2004-09-29 | 2010-09-15 | 本田技研工業株式会社 | 自動二輪車 |
GB2434405A (en) * | 2006-01-20 | 2007-07-25 | Keith Gordon Hall | Internal combustion engine with disc drive mechanism and crankcase compression of intake air |
SE0602508L (sv) * | 2006-11-27 | 2007-08-28 | Atlas Copco Constr Tools Ab | Tvåtaktsförbränningsmotor |
WO2008092295A1 (fr) * | 2007-01-23 | 2008-08-07 | Hongfeng Li | Système de lubrification destiné à un moteur diesel quatre temps de petite taille à rotation libre |
US7867310B2 (en) * | 2009-01-29 | 2011-01-11 | General Electric Company | Method and apparatus for separating air and oil |
US9187083B2 (en) | 2009-09-16 | 2015-11-17 | Polaris Industries Inc. | System and method for charging an on-board battery of an electric vehicle |
EP2308708B1 (de) * | 2009-09-16 | 2016-08-17 | swissauto powersport llc | Elektrofahrzeug mit Reichweitenverlängerung |
EP2672082A1 (de) * | 2012-06-05 | 2013-12-11 | Wärtsilä Schweiz AG | Schmiermittelsammelvorrichtung |
DE102012011834A1 (de) | 2012-06-14 | 2013-12-19 | Volkswagen Aktiengesellschaft | Verfahren zum Vermeiden einer Vorentflammung in einem Verbrennungsmotor |
WO2016065316A1 (en) * | 2014-10-23 | 2016-04-28 | Enairgy Engines Llc | Power plant |
CN104594976A (zh) * | 2014-11-26 | 2015-05-06 | 中国北方发动机研究所(天津) | 一种由机油回油泵驱动的油气分离器 |
US10300786B2 (en) | 2014-12-19 | 2019-05-28 | Polaris Industries Inc. | Utility vehicle |
IL296644B2 (en) | 2016-06-14 | 2023-12-01 | Polaris Inc | Hybrid vehicle |
CN106285832B (zh) * | 2016-10-14 | 2019-02-22 | 北京航空航天大学 | 一种用于航空重油活塞发动机的曲轴箱压力自平衡系统 |
CN106762127A (zh) * | 2017-02-09 | 2017-05-31 | 天津内燃机研究所(天津摩托车技术中心) | 二冲程缸内直喷发动机 |
CN107676173A (zh) * | 2017-09-28 | 2018-02-09 | 山东华盛中天机械集团股份有限公司 | 以二冲程汽油机燃料进行燃烧和润滑的四冲程汽油机 |
US10780770B2 (en) | 2018-10-05 | 2020-09-22 | Polaris Industries Inc. | Hybrid utility vehicle |
US11370266B2 (en) | 2019-05-16 | 2022-06-28 | Polaris Industries Inc. | Hybrid utility vehicle |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3672172A (en) * | 1971-03-15 | 1972-06-27 | Gary L Hammond | Simplified supercharged internal combustion engine with emissions control |
JPS5932618A (ja) * | 1982-08-18 | 1984-02-22 | Zenji Ishikawa | 4サイクル機関 |
JPH0247212Y2 (de) * | 1985-01-18 | 1990-12-12 | ||
JPH0511302Y2 (de) * | 1987-02-23 | 1993-03-19 | ||
DE3731250C1 (en) * | 1987-09-17 | 1988-10-06 | Zochev Donkov Dancho Dipl Ing | Reciprocating piston internal combustion engine with crankcase charge air pumps |
DE3832013C2 (de) * | 1987-09-17 | 1996-08-01 | Dancho Zochev Dipl Ing Donkov | Hubkolben-Brennkraftmaschine mit Kurbelgehäuse-Ladeluftpumpen |
JP2694907B2 (ja) * | 1988-12-26 | 1997-12-24 | ヤマハ発動機株式会社 | 2サイクルエンジン |
JPH02233827A (ja) * | 1989-03-07 | 1990-09-17 | Norio Saito | クランク室圧縮付吸気方による4行程エンジン吸気量増加方 |
DE3935789C2 (de) * | 1989-10-27 | 1995-10-12 | Dancho Zochev Dipl Ing Donkov | Hubkolben-Brennkraftmaschine mit Kurbelgehäuse-Ladeluftpumpe und Ladeluftkühler |
FR2706182B1 (fr) * | 1993-06-07 | 1995-07-21 | Inst Francais Du Petrole | Dispositif de recyclage de lubrifiant dans un moteur à combustion interne. |
AU5942494A (en) | 1993-06-25 | 1995-01-05 | Mcculloch Corporation | Four-stroke internal combustion engine |
US5291866A (en) * | 1993-07-20 | 1994-03-08 | Kosa David R | Pulse charger |
JPH08151914A (ja) * | 1994-11-29 | 1996-06-11 | Ishikawajima Shibaura Mach Co Ltd | 4サイクルエンジンの潤滑装置 |
JPH08193519A (ja) * | 1995-01-13 | 1996-07-30 | Yamaha Motor Co Ltd | コンロッド過給式エンジンを備えた自動二輪車 |
JP3373968B2 (ja) * | 1995-02-15 | 2003-02-04 | 小島プレス工業株式会社 | 内燃機関用オイルトラッパ |
US5758610A (en) * | 1996-11-12 | 1998-06-02 | Park; Gile Jun Yang | Air cooled self-supercharging four stroke internal combustion engine |
DE19704594A1 (de) * | 1997-02-07 | 1998-08-13 | Knecht Filterwerke Gmbh | Schmieröleinfülleitung eines Verbrennungsmotors mit Ölnebelabscheider |
RO117278B1 (ro) * | 2000-04-26 | 2001-12-28 | Cristian Lungu | Metoda si instalatie de supraalimentare a motorului cu ardere interna |
-
2000
- 2000-11-30 AT AT0201100A patent/AT411091B/de not_active IP Right Cessation
-
2001
- 2001-11-28 BR BR0115846-5A patent/BR0115846A/pt not_active IP Right Cessation
- 2001-11-28 AT AT01998720T patent/ATE368799T1/de active
- 2001-11-28 WO PCT/AT2001/000384 patent/WO2002044528A1/de active IP Right Grant
- 2001-11-28 JP JP2002546864A patent/JP2004514091A/ja active Pending
- 2001-11-28 AU AU2002218061A patent/AU2002218061B2/en not_active Ceased
- 2001-11-28 DE DE50112803T patent/DE50112803D1/de not_active Expired - Lifetime
- 2001-11-28 AU AU1806102A patent/AU1806102A/xx active Pending
- 2001-11-28 US US10/432,851 patent/US7073482B2/en not_active Expired - Fee Related
- 2001-11-28 CN CN01819657.8A patent/CN1239815C/zh not_active Expired - Fee Related
- 2001-11-28 EP EP01998720A patent/EP1337744B1/de not_active Expired - Lifetime
- 2001-11-28 ES ES01998720T patent/ES2291382T3/es not_active Expired - Lifetime
-
2004
- 2004-05-21 HK HK04103613A patent/HK1060611A1/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO0244528A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2291382T3 (es) | 2008-03-01 |
CN1239815C (zh) | 2006-02-01 |
JP2004514091A (ja) | 2004-05-13 |
ATA20112000A (de) | 2003-02-15 |
US20040099241A1 (en) | 2004-05-27 |
WO2002044528A1 (de) | 2002-06-06 |
CN1478174A (zh) | 2004-02-25 |
AT411091B (de) | 2003-09-25 |
AU1806102A (en) | 2002-06-11 |
US7073482B2 (en) | 2006-07-11 |
BR0115846A (pt) | 2003-10-07 |
AU2002218061B2 (en) | 2007-05-24 |
HK1060611A1 (en) | 2004-08-13 |
EP1337744B1 (de) | 2007-08-01 |
DE50112803D1 (de) | 2007-09-13 |
ATE368799T1 (de) | 2007-08-15 |
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