US20080314572A1 - Lubrication system and oil cooler with bypass - Google Patents
Lubrication system and oil cooler with bypass Download PDFInfo
- Publication number
- US20080314572A1 US20080314572A1 US11/767,651 US76765107A US2008314572A1 US 20080314572 A1 US20080314572 A1 US 20080314572A1 US 76765107 A US76765107 A US 76765107A US 2008314572 A1 US2008314572 A1 US 2008314572A1
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- US
- United States
- Prior art keywords
- oil
- connector
- passages
- inlet
- oil cooler
- 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.)
- Abandoned
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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
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/002—Cooling
Definitions
- This invention relates to a lubrication system for a lubricated mechanism, such as an engine, transmission or other mechanism including an oil cooler and a bypass for the oil cooler.
- the cooler may have a core with a plurality of oil passages in heat exchange relation with coolant passages adapted to carry cooling fluids such as water or air.
- a cooler bypass may be provided to maintain oil flow to the mechanism components until the oil warms to normal operating temperature, or the cooler oil flow is restored by changing the oil or servicing or replacing the oil cooler.
- Devices such as a pressure actuated bypass valve or a simple orifice may be provided for this purpose.
- a pressure actuated bypass valve or a simple orifice may be provided for this purpose.
- such arrangements may add cost or complexity to a lubrication system.
- the present invention provides a lubrication system with an oil cooler for an engine or other lubricated mechanism.
- the oil cooler includes a connector through which the oil cooler is connected to an oil supply passage and a return oil passage in an engine crankcase or other supply source.
- the connector includes a seal face to which inlet and outlet passages to and from a cooler core are connected with oil supply and return passages in an engine or other connected mechanism.
- a continually open oil bypass is provided by forming a groove or slot in the seal face of the oil cooler connector, the slot extending between the inlet and outlet passages of the oil cooler and forming the cooler oil bypass.
- a bypass may be formed by a slot in a mating engine or mechanism connector, connecting with the engine oil supply and return oil passages.
- FIG. 1 is a diagrammatic view of part of an engine lubrication system having an oil cooler with a cooler bypass according to the invention
- FIG. 2 is a side view of an oil cooler adapted for attachment to an automotive engine or other lubricated mechanism
- FIG. 3 is a face view of a connector for inlet and outlet passages to and from the oil cooler core and including a bypass slot extending between the passages;
- FIG. 4 is a view similar to FIG. 3 showing an alternative mating engine connector with an oil cooler bypass slot
- FIG. 5 is a view similar to FIG. 3 including a perimeter gasket in position for attachment of the oil cooler connector to a mating engine connector;
- FIG. 6 is a diagrammatic cross-sectional view through the oil cooler connecter along the line 6 - 6 of FIG. 5 showing the bypass flow area through the slot and between the assembled flanges of an oil cooler attached to an engine.
- Engine 12 generally indicates part of a lubrication system for a lubricated mechanism, such as an engine 12 , a transmission or other mechanism, not shown.
- Engine 12 includes a suitable housing such as a cylinder block or crankcase 14 with an oil sump or oil pan 16 for containing a supply of lubricating oil.
- an engine driven oil pump is provided within the crankcase or oil pan for supplying pressurized oil from the oil pan 16 to the various internal moving components of the engine 12 .
- the lubrication system includes an oil cooler 18 having a housing 20 which may be mounted at any convenient location, such as on a side 22 of the cylinder block or crankcase 14 .
- An exemplary form of oil cooler 18 with housing 20 is illustrated in FIG. 2 .
- the oil cooler is provided to cool the engine oil as needed to maintain a desired temperature below a maximum operating temperature level.
- the oil cooler housing 20 may include a core 24 having a plurality of cooling oil passages 26 extending between inlet and outlet cooling oil headers 28 , 30 .
- the headers are connected by inlet and outlet passages 32 , 34 with an oil cooler connector 36 , FIG. 3 , in which the passages 32 , 34 terminate at inlet and outlet ends 38 , 40 extending to a generally flat oil cooler seal face 42 .
- the oil cooler connector is fastened, as by bolts 44 , in opposed face relation with a similar seal face 46 , FIG. 4 , of a mechanism/engine connector 48 provided on the side 22 of the cylinder block or crankcase 14 of the associated mechanism or engine 12 .
- the mechanism/engine seal face 46 communicates with an outlet end 50 of an oil supply passage 52 connecting internally with the engine oil pump, not shown.
- the seal face 46 also communicates with the inlet end 54 of a return oil passage 56 connecting internally with the mechanism/engine oil system 10 for delivering the cooled oil to the lubrication system.
- the oil cooler core 24 includes coolant passages 58 , or an equivalent volume, with which the oil passages are in heat exchange relation within the oil cooler core 24 .
- the passages 58 or volume may have any suitable flow path through the core, such as a return flow path from a coolant inlet header 60 to a return flow header 62 and back to a coolant outlet header 64 .
- Inlet and outlet connections 66 , 68 connect the headers 60 , 64 with the engine cooling system, not shown, to provide engine coolant to the cooler core passages (volume) 58 .
- coolant may be supplied by an associated engine cooling system, or another source of coolant or cooling fluid may be provided. Any suitable coolant may be used including antifreeze containing liquid coolants, as well as air or other suitable gaseous fluids if desired.
- a simplified oil bypass passage is provided between the engine 12 and the oil cooler core 24 .
- the passage replaces a higher cost pressure actuated bypass valve of a prior system and avoids the addition of an orifice, which would involve additional costs.
- the bypass passage is formed in the oil cooler connector 36 and takes the form of a slot 70 of generally rectangular open sided cross section.
- the slot 70 preferably extends directly between the inlet and outlet ends 38 , 40 of the cooler inlet and outlet oil passages 32 , 34 .
- the slot is easily machined, as by an end mill, into the seal face 42 of the oil cooler connector with the slot open side 71 facing out from the seal face 42 toward the position of the engine connector 46 , when assembled with an engine, as shown in FIG. 1 of the drawings.
- FIG. 4 shows another alternative embodiment of the invention wherein the bypass passage, or slot 72 with its open side 73 , is formed in the seal face 46 of the engine connector 48 .
- the configuration is shown as a mirror image of the arrangement of FIG. 3 in that the seal face 46 of the engine connector 48 , the outlet and inlet ends 50 , 54 of the oil supply passage 52 and the return oil passage 56 , respectively, as well as the slot 72 are similar to the comparable features of FIG. 3 except that the oil supply passage 52 and the return oil passage 56 and their outlet and inlet ends 50 , 54 are positioned on opposite ends of their seal face 46 from the outlet and inlet ends 38 , 40 of the oil cooler connector of FIG. 3 with which they connect in assembly.
- the FIG. 4 embodiment should give equivalent bypass flow to that of FIG. 3 , if the dimensions are equal, but the embodiment of FIG. 3 is considered preferable because the smaller oil cooler is perceived as being easier to handle for machining of the associated connector than that of the larger engine block or crankcase.
- Assembly of the oil cooler onto the engine requires only the addition of a “perimeter seal” gasket 74 , shown in FIG. 5 in position on the oil cooler connector 36 .
- the gasket 74 is clamped between the seal faces 42 , 46 of the oil cooler connector 36 and the engine connector 48 as the oil cooler 18 is mounted on the engine 12 .
- the gasket 74 includes a racetrack shaped central opening 76 , which has semicircular edges 78 that border the outer perimeters of the passage ends, which terminate in both the engine and oil cooler connectors 48 , 36 .
- the opening 76 also has connecting straight edges 80 that join tangentially with opposite ends of the semicircular edges 78 .
- the opening thereby surrounds the oil passage ends 38 , 40 , terminating in both the oil cooler and engine connectors as well as the volume between the seal faces 46 , 42 within the opening 76 between the passage ends.
- This volume includes the volume of the associated bypass slot 70 in the oil cooler connector or the alternative bypass slot 72 in the engine connector.
- Use of the perimeter seal gasket is more economical than a previous edge bonded rubber gasket which separately sealed the inlet and outlet passages from bypassing the oil cooler flow.
- FIG. 6 illustrates the configuration and total cross-sectional area 82 of an exemplary oil cooler bypass opening formed between and within the seal faces 46 , 42 of the engine and oil cooler connectors 48 , 36 .
- the shorter and thicker rectangle 84 illustrates the cross-sectional bypass flow area of the slot 70 in the seal face 42 of the oil cooler connector 36 .
- the thinner and longer rectangle 86 illustrates the cross-sectional area of the volume formed between the engine and oil cooler connector seal faces 46 , 42 which equals the thickness of the perimeter gasket within the width of the gasket opening 76 .
- the total of the two rectangles 84 , 86 equals the flow area of the bypass passage for oil flow bypassing the oil cooler core when the associated engine is in operation and providing a continuous oil flow to the bearings and other lubricated parts of the engine, even though there is excessive oil viscosity or the cooler core becomes clogged by contaminants that prevent adequate oil flow through the oil cooler core.
- the present invention provides a simple but effective oil bypass for an oil cooler, which provides continuous oil bypass flow to protect the lubricated components of an engine or mechanism from damage due to oil starvation in spite of high oil viscosity or plugging of the oil passages of an associated oil cooler.
- the bypass arrangement is easily formed in a junction of inlet and outlet oil passages in a connector in which a bypass groove or slot may be machined or formed between the passages.
Abstract
Description
- This invention relates to a lubrication system for a lubricated mechanism, such as an engine, transmission or other mechanism including an oil cooler and a bypass for the oil cooler.
- It is known in the art, relating to engines, transmissions and other mechanisms, to provide an oil cooler for maintaining the oil temperature below a desired maximum operating limit. The cooler may have a core with a plurality of oil passages in heat exchange relation with coolant passages adapted to carry cooling fluids such as water or air.
- In operation, oil degradation or deposits, as well as high oil viscosity when the oil is cold, may impede oil flow through the cooler oil passages. To avoid inadequate lubrication of the mechanism, a cooler bypass may be provided to maintain oil flow to the mechanism components until the oil warms to normal operating temperature, or the cooler oil flow is restored by changing the oil or servicing or replacing the oil cooler. Devices such as a pressure actuated bypass valve or a simple orifice may be provided for this purpose. However, such arrangements may add cost or complexity to a lubrication system.
- The present invention provides a lubrication system with an oil cooler for an engine or other lubricated mechanism. The oil cooler includes a connector through which the oil cooler is connected to an oil supply passage and a return oil passage in an engine crankcase or other supply source. The connector includes a seal face to which inlet and outlet passages to and from a cooler core are connected with oil supply and return passages in an engine or other connected mechanism. A continually open oil bypass is provided by forming a groove or slot in the seal face of the oil cooler connector, the slot extending between the inlet and outlet passages of the oil cooler and forming the cooler oil bypass. Alternatively, a bypass may be formed by a slot in a mating engine or mechanism connector, connecting with the engine oil supply and return oil passages.
- These and other features and advantages of the invention will be more fully understood from the following description of certain specific embodiments of the invention taken together with the accompanying drawings.
-
FIG. 1 is a diagrammatic view of part of an engine lubrication system having an oil cooler with a cooler bypass according to the invention; -
FIG. 2 is a side view of an oil cooler adapted for attachment to an automotive engine or other lubricated mechanism; -
FIG. 3 is a face view of a connector for inlet and outlet passages to and from the oil cooler core and including a bypass slot extending between the passages; -
FIG. 4 is a view similar toFIG. 3 showing an alternative mating engine connector with an oil cooler bypass slot; -
FIG. 5 is a view similar toFIG. 3 including a perimeter gasket in position for attachment of the oil cooler connector to a mating engine connector; and -
FIG. 6 is a diagrammatic cross-sectional view through the oil cooler connecter along the line 6-6 ofFIG. 5 showing the bypass flow area through the slot and between the assembled flanges of an oil cooler attached to an engine. - Referring now to the drawings in detail,
numeral 10 generally indicates part of a lubrication system for a lubricated mechanism, such as anengine 12, a transmission or other mechanism, not shown.Engine 12 includes a suitable housing such as a cylinder block orcrankcase 14 with an oil sump oroil pan 16 for containing a supply of lubricating oil. Within the crankcase or oil pan, an engine driven oil pump, not shown, is provided for supplying pressurized oil from theoil pan 16 to the various internal moving components of theengine 12. - The lubrication system includes an
oil cooler 18 having ahousing 20 which may be mounted at any convenient location, such as on aside 22 of the cylinder block orcrankcase 14. An exemplary form ofoil cooler 18 withhousing 20 is illustrated inFIG. 2 . The oil cooler is provided to cool the engine oil as needed to maintain a desired temperature below a maximum operating temperature level. Theoil cooler housing 20 may include acore 24 having a plurality ofcooling oil passages 26 extending between inlet and outletcooling oil headers outlet passages oil cooler connector 36,FIG. 3 , in which thepassages cooler seal face 42. - The oil cooler connector is fastened, as by
bolts 44, in opposed face relation with asimilar seal face 46,FIG. 4 , of a mechanism/engine connector 48 provided on theside 22 of the cylinder block orcrankcase 14 of the associated mechanism orengine 12. The mechanism/engine seal face 46 communicates with anoutlet end 50 of anoil supply passage 52 connecting internally with the engine oil pump, not shown. Theseal face 46 also communicates with theinlet end 54 of areturn oil passage 56 connecting internally with the mechanism/engine oil system 10 for delivering the cooled oil to the lubrication system. - In order to provide a cooling fluid for the
oil cooler 18, theoil cooler core 24 includescoolant passages 58, or an equivalent volume, with which the oil passages are in heat exchange relation within theoil cooler core 24. Thepassages 58 or volume may have any suitable flow path through the core, such as a return flow path from acoolant inlet header 60 to areturn flow header 62 and back to acoolant outlet header 64. Inlet andoutlet connections headers - If the oil cooler is connected to a transmission or other lubricated mechanism, coolant may be supplied by an associated engine cooling system, or another source of coolant or cooling fluid may be provided. Any suitable coolant may be used including antifreeze containing liquid coolants, as well as air or other suitable gaseous fluids if desired.
- In accordance with the invention, a simplified oil bypass passage is provided between the
engine 12 and theoil cooler core 24. The passage replaces a higher cost pressure actuated bypass valve of a prior system and avoids the addition of an orifice, which would involve additional costs. Preferably, as shown inFIG. 3 , the bypass passage is formed in theoil cooler connector 36 and takes the form of aslot 70 of generally rectangular open sided cross section. Theslot 70 preferably extends directly between the inlet and outlet ends 38, 40 of the cooler inlet andoutlet oil passages seal face 42 of the oil cooler connector with the slotopen side 71 facing out from theseal face 42 toward the position of theengine connector 46, when assembled with an engine, as shown inFIG. 1 of the drawings. - It should be understood that other forms of open sided grooves or slots (such as V-shaped, or U-shaped or forming a curved passage in the seal face, could be substituted for the preferred, straight slot with rectangular cross section configuration.
-
FIG. 4 shows another alternative embodiment of the invention wherein the bypass passage, orslot 72 with its open side 73, is formed in theseal face 46 of theengine connector 48. The configuration is shown as a mirror image of the arrangement ofFIG. 3 in that theseal face 46 of theengine connector 48, the outlet and inlet ends 50, 54 of theoil supply passage 52 and thereturn oil passage 56, respectively, as well as theslot 72 are similar to the comparable features ofFIG. 3 except that theoil supply passage 52 and thereturn oil passage 56 and their outlet andinlet ends seal face 46 from the outlet andinlet ends FIG. 3 with which they connect in assembly. TheFIG. 4 embodiment should give equivalent bypass flow to that ofFIG. 3 , if the dimensions are equal, but the embodiment ofFIG. 3 is considered preferable because the smaller oil cooler is perceived as being easier to handle for machining of the associated connector than that of the larger engine block or crankcase. - Assembly of the oil cooler onto the engine requires only the addition of a “perimeter seal”
gasket 74, shown inFIG. 5 in position on theoil cooler connector 36. Thegasket 74 is clamped between theseal faces oil cooler connector 36 and theengine connector 48 as theoil cooler 18 is mounted on theengine 12. - The
gasket 74,FIG. 5 , includes a racetrack shapedcentral opening 76, which hassemicircular edges 78 that border the outer perimeters of the passage ends, which terminate in both the engine andoil cooler connectors opening 76 also has connectingstraight edges 80 that join tangentially with opposite ends of thesemicircular edges 78. The opening thereby surrounds theoil passage ends opening 76 between the passage ends. This volume includes the volume of the associatedbypass slot 70 in the oil cooler connector or thealternative bypass slot 72 in the engine connector. Use of the perimeter seal gasket is more economical than a previous edge bonded rubber gasket which separately sealed the inlet and outlet passages from bypassing the oil cooler flow. -
FIG. 6 illustrates the configuration and totalcross-sectional area 82 of an exemplary oil cooler bypass opening formed between and within the seal faces 46, 42 of the engine andoil cooler connectors thicker rectangle 84 illustrates the cross-sectional bypass flow area of theslot 70 in theseal face 42 of theoil cooler connector 36. The thinner andlonger rectangle 86 illustrates the cross-sectional area of the volume formed between the engine and oil cooler connector seal faces 46, 42 which equals the thickness of the perimeter gasket within the width of thegasket opening 76. The total of the tworectangles - It is apparent that the present invention provides a simple but effective oil bypass for an oil cooler, which provides continuous oil bypass flow to protect the lubricated components of an engine or mechanism from damage due to oil starvation in spite of high oil viscosity or plugging of the oil passages of an associated oil cooler. The bypass arrangement is easily formed in a junction of inlet and outlet oil passages in a connector in which a bypass groove or slot may be machined or formed between the passages.
- While the invention has been described by reference to certain preferred embodiments, it should be understood that numerous changes could be made within the spirit and scope of the inventive concepts described. Accordingly, it is intended that the invention not be limited to the disclosed embodiments, but that it have the full scope permitted by the language of the following claims.
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/767,651 US20080314572A1 (en) | 2007-06-25 | 2007-06-25 | Lubrication system and oil cooler with bypass |
DE102008029322A DE102008029322A1 (en) | 2007-06-25 | 2008-06-20 | Lubrication system and oil cooler with secondary line |
CNA200810128899XA CN101332794A (en) | 2007-06-25 | 2008-06-24 | Lubrication system and oil cooler with bypass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/767,651 US20080314572A1 (en) | 2007-06-25 | 2007-06-25 | Lubrication system and oil cooler with bypass |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080314572A1 true US20080314572A1 (en) | 2008-12-25 |
Family
ID=40135272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/767,651 Abandoned US20080314572A1 (en) | 2007-06-25 | 2007-06-25 | Lubrication system and oil cooler with bypass |
Country Status (3)
Country | Link |
---|---|
US (1) | US20080314572A1 (en) |
CN (1) | CN101332794A (en) |
DE (1) | DE102008029322A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080257625A1 (en) * | 2007-04-19 | 2008-10-23 | Antonio Stranges | Transmission oil pan |
US20100212867A1 (en) * | 2009-02-25 | 2010-08-26 | Man Nutzfahrzeuge Ag | Cooling Device for Engine Oil and/or Transmission Oil, Particularly in an Internal Combustion Engine |
US20120024504A1 (en) * | 2010-07-30 | 2012-02-02 | Grundfos Management A/S | Heat exchanger unit |
US8911620B2 (en) * | 2010-11-29 | 2014-12-16 | Vesa S. Silegren | Universal spin-on oil filter adapter |
US9624797B2 (en) | 2014-01-31 | 2017-04-18 | Kohler Co. | Lubricating system for internal combustion engine, oil pan apparatus, and internal combustion engine |
WO2018055486A1 (en) * | 2016-09-20 | 2018-03-29 | Tvs Motor Company Limited | Lubrication system for a two-wheeled vehicle |
CN110402077A (en) * | 2017-03-24 | 2019-11-01 | 洋马株式会社 | Combine harvester |
US10533705B2 (en) * | 2016-04-08 | 2020-01-14 | Bomag Gmbh | Method for cooling and/or heating lubricant in an exchangeable milling drum box of a ground milling machine, exchangeable milling drum box, and ground milling machine |
US20230141537A1 (en) * | 2020-07-07 | 2023-05-11 | SPH Sustainable Process Heat GmbH | Lubricant reservoir, compressor system and heat pump |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101746330B (en) * | 2010-02-05 | 2011-12-28 | 中国北方车辆研究所 | Integrated vehicle lubrication device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US4793302A (en) * | 1986-04-19 | 1988-12-27 | Perkins Engines Group Limited | Engine cooling system |
US5236064A (en) * | 1991-09-20 | 1993-08-17 | Wagoner Johnny M | Lubricant charging device |
US6244334B1 (en) * | 1999-02-05 | 2001-06-12 | Long Manufacturing Ltd. | Self-enclosing heat exchange with shim plate |
US6997238B1 (en) * | 2001-02-27 | 2006-02-14 | W.S. Darley & Co. | Cooler plate and gearbox assembly |
US20070068737A1 (en) * | 2003-09-23 | 2007-03-29 | Rainer Gendermann | Oil module for an internal combustion engine |
-
2007
- 2007-06-25 US US11/767,651 patent/US20080314572A1/en not_active Abandoned
-
2008
- 2008-06-20 DE DE102008029322A patent/DE102008029322A1/en not_active Withdrawn
- 2008-06-24 CN CNA200810128899XA patent/CN101332794A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4793302A (en) * | 1986-04-19 | 1988-12-27 | Perkins Engines Group Limited | Engine cooling system |
US5236064A (en) * | 1991-09-20 | 1993-08-17 | Wagoner Johnny M | Lubricant charging device |
US6244334B1 (en) * | 1999-02-05 | 2001-06-12 | Long Manufacturing Ltd. | Self-enclosing heat exchange with shim plate |
US6997238B1 (en) * | 2001-02-27 | 2006-02-14 | W.S. Darley & Co. | Cooler plate and gearbox assembly |
US20070068737A1 (en) * | 2003-09-23 | 2007-03-29 | Rainer Gendermann | Oil module for an internal combustion engine |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080257625A1 (en) * | 2007-04-19 | 2008-10-23 | Antonio Stranges | Transmission oil pan |
US7637337B2 (en) * | 2007-04-19 | 2009-12-29 | Ford Global Technologies, Llc | Transmission oil pan |
US20100212867A1 (en) * | 2009-02-25 | 2010-08-26 | Man Nutzfahrzeuge Ag | Cooling Device for Engine Oil and/or Transmission Oil, Particularly in an Internal Combustion Engine |
US20120024504A1 (en) * | 2010-07-30 | 2012-02-02 | Grundfos Management A/S | Heat exchanger unit |
US9726382B2 (en) * | 2010-07-30 | 2017-08-08 | Grundfos Management A/S | Heat exchanger unit having connectors with identical base elements |
US8911620B2 (en) * | 2010-11-29 | 2014-12-16 | Vesa S. Silegren | Universal spin-on oil filter adapter |
US9624797B2 (en) | 2014-01-31 | 2017-04-18 | Kohler Co. | Lubricating system for internal combustion engine, oil pan apparatus, and internal combustion engine |
US10487706B2 (en) | 2014-01-31 | 2019-11-26 | Kohler Co. | Lubricating system for internal combustion engine, oil pan apparatus, and internal combustion engine |
US10533705B2 (en) * | 2016-04-08 | 2020-01-14 | Bomag Gmbh | Method for cooling and/or heating lubricant in an exchangeable milling drum box of a ground milling machine, exchangeable milling drum box, and ground milling machine |
WO2018055486A1 (en) * | 2016-09-20 | 2018-03-29 | Tvs Motor Company Limited | Lubrication system for a two-wheeled vehicle |
CN110402077A (en) * | 2017-03-24 | 2019-11-01 | 洋马株式会社 | Combine harvester |
US20230141537A1 (en) * | 2020-07-07 | 2023-05-11 | SPH Sustainable Process Heat GmbH | Lubricant reservoir, compressor system and heat pump |
Also Published As
Publication number | Publication date |
---|---|
CN101332794A (en) | 2008-12-31 |
DE102008029322A1 (en) | 2009-01-22 |
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