WO2016164106A1 - Oil pan assembly - Google Patents
Oil pan assembly Download PDFInfo
- Publication number
- WO2016164106A1 WO2016164106A1 PCT/US2016/017731 US2016017731W WO2016164106A1 WO 2016164106 A1 WO2016164106 A1 WO 2016164106A1 US 2016017731 W US2016017731 W US 2016017731W WO 2016164106 A1 WO2016164106 A1 WO 2016164106A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil pan
- pan assembly
- perimeter wall
- plastic
- thermoset
- Prior art date
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
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/0004—Oilsumps
-
- 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
- F01M11/0004—Oilsumps
- F01M2011/0087—Sump being made of different parts
-
- 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
- F01M11/0004—Oilsumps
- F01M2011/0091—Oilsumps characterised by used materials
Definitions
- Embodiments of the present disclosure generally relate to oil pan assemblies, such as may be used with transmissions and internal combustion engines of vehicles.
- Various vehicles include transmissions and internal combustion engines having components that are lubricated with oil.
- An oil pans is often used to retain oil within an portion of a vehicle when the oil is not circulating through a transmission or an engine.
- Known oil pans may be formed of thermoplastic resin (such as Nylon 6/6). Other known oil pans may be formed from other materials, such as metal and rubber for impact resistance, strength, and the like. Some known oil pans integrate other components into the pan, such as suction and pressure side filters, windage trays, and baffling. Examples of oil pans are described in EP 1276974, entitled “Oil Pan Module for Internal Combustion Engines," EP 1511924, entitled “Oil Pan,” U.S. Patent No. 4,930,469, entitled “Oil Pan for an Internal Combustion Engine,” U.S. Patent No. 6,131,543, entitled “Oil Pan for an Internal Combustion Engine,” U.S. Patent No.
- plastics may be used to form certain engine and transmission parts.
- Corporate Average Fuel Economy (CAFE) standards represent regulations that were enacted to improve the average fuel economy of vehicles, such as automobiles and light trucks, which are produced for sale in the United States.
- a particular CAFE standard of 55 miles per gallon by the year 2025 has incentivized manufacturers to seek to produce lighter vehicles.
- a component that is made of plastic is typically lighter than a metal version of the component.
- various vehicle components may be made of plastic in order to reduce overall vehicle weight.
- Injection-molded N 6/6 represents a common material used to form plastic oil pans.
- metals such as stamped aluminum. That is, at higher temperatures, such as within and/or proximate to an operating internal combustion engine and/or exhaust lines, plastic components may deform. Therefore, metals are still used to form various components, as the metals are able to withstand higher temperatures. Yet, as can be appreciated, metals, such as aluminum or steel, have design limitations with respect to the types of shapes that may be produced, and typically weigh more than twice the weight of plastic pans.
- an oil pan assembly that includes a first portion formed of a first plastic, and a second portion formed of a second plastic that differs from the first plastic.
- the first portion is securely coupled to the second portion.
- the first plastic may be a thermoset or a thermoplastic, while the second plastic may be the other of the thermoset or the thermoplastic.
- the thermoset is Sheet Molding Compound, and the thermoplastic is Nylon 6/6.
- the first portion may be configured to be subjected to one or both of higher temperatures or higher forces than the second portion.
- the first portion is configured to be positioned proximate to one or more exhaust routings.
- the first portion may include a perimeter wall
- the second portion may include a base and a flange secured to the perimeter wall.
- An oil collection chamber is defined between the base and the perimeter wall.
- the base may have a thickness at least twice a thickness of the perimeter wall.
- the first portion may be formed through compression molding.
- the second portion may be overmolded onto the first portion.
- Certain embodiments of the present disclosure provide a method of forming an oil pan assembly.
- the method may include forming a first portion of the oil pan assembly from a first plastic, forming a second portion of the oil pan assembly from a second plastic that differs from the first plastic, and securely coupling the first portion to the second portion.
- Figure 1 illustrates a perspective top view of an oil pan assembly, according to an embodiment of the present disclosure.
- Figure 2 illustrates a cross-sectional view of a base coupled to a perimeter wall of an oil pan assembly, according to an embodiment of the present disclosure.
- Figure 3 illustrates a perspective top view of a perimeter wall, according to an embodiment of the present disclosure.
- Figure 4 illustrates a flow chart of a method of forming an oil pan assembly, according to an embodiment of the present disclosure.
- Embodiments of the present disclosure provide an oil pan assembly that may include two different portions, each of which may be formed of a different plastic.
- the oil pan assembly may include a first portion that may be formed of a thermoplastic, such as Nylon 6/6 (N 6/6), and a second portion that may be formed of a thermoset, such as Sheet Molding Compound (SMC).
- N 6/6 Nylon 6/6
- SMC Sheet Molding Compound
- Each plastic has unique properties and different material costs.
- the two plastics may be used to form the respective first and second portions, which are combined to form an oil pan assembly that maximizes or otherwise increases performance for adverse environments (such as proximate to an internal combustion engine of a vehicle), while minimizing or otherwise reducing cost.
- Embodiments of the present disclosure provide an oil pan assembly that may include thermoset materials (thermosets) in areas that are configured for high impact and/or high temperature that are typically beyond the performance capabilities of thermoplastic materials (thermoplastics).
- thermoset is a highly-crosslinked polymer that has a molecular mesh or network of polymer chains akin to a three- dimensional net. Once cured, thermosets cannot be melted or remolded, and are resistant to solvents. In short, a thermoset cures irreversibly, such that once a thermoset is formed, it is permanently set. Due to a tightly-crosslinked structure, thermosets resist higher temperatures and provide increased structural stability as compared to thermoplastics.
- thermoplastic is a type of plastic that becomes pliable or moldable above a specific temperature, has a defined melting point, and solidifies upon cooling. Polymer chains of thermoplastics associate through intermolecular forces, which weaken rapidly with increased temperature, yielding a viscous liquid. As such, thermoplastics may be reshaped by heating and are typically used to form components through injection molding, compression molding, calendering, extrusion, and/or the like.
- thermosets As compared to thermoplastics, thermosets have significantly higher temperature resistance (for example, 400-500 degrees F). In contrast, a maximum long term temperature resistance of N 6/6 or similar derivatives is approximately 300-350 degrees F.
- thermoset particularly a carbon fiber version
- a thermoplastic is typically much costlier than a thermoplastic.
- a carbon fiber thermoset may currently range in price from $5-$20 per pound
- thermoplastic N 6/6 or high temperature derivatives such as PPA may currently average in price from $1.75-$3.75 per pound.
- an oil pan assembly that includes a first portion formed of a thermoset, and a second portion formed of a thermoplastic.
- the first portion may be formed of a thermoplastic, while the second portion may be formed of a thermoset.
- the first portion is configured to be at or proximate to an area that may be subjected to high temperatures and/or forces that may otherwise deform and/or degrade a thermoplastic.
- the second portion may not be susceptible to such high temperatures and/or impacts, and may therefore be formed of the thermoplastic, in order to reduce the overall cost of the oil pan assembly.
- an oil pan assembly may include a thermoset perimeter or annular wall that is coupled to a thermoplastic base.
- the oil pan assembly may include the annular wall and the base, each of which is formed of a separate plastic material, to form a unique plastic hybrid design that provides temperature and impact resistance, while minimizing or otherwise reducing overall cost through the use of a lower cost thermoplastic resin at areas that are not susceptible to impacts and/or elevated temperatures.
- thermoset SMC pans may be drawn deeper and are lighter.
- Temperature resistance may be desired along the sides of the oil pan assembly due to exhaust routing along either side.
- Other areas of the oil pan assembly, including the bottom and flange sections, may be molded from a thermoplastic, such as
- N 6/6 which allows the efficient use of lower cost resin, and the flexibility to insert mold torque limiters or torque limiters with threaded fasteners (bolts).
- Portions of the oil assembly that are not to be subjected to impacts or elevated temperatures may be overmolded onto the thermoset molding.
- the base and/or flange of the oil pan assembly may be formed of injection molded Nylon 6/6 33GF.
- Certain embodiments of the present disclosure provide a method of manufacturing an oil pan assembly.
- the method may include compression molding a thermoset SMC portion, inserting the thermoset SMC portion into an injection molding tool, and over-molding the SMC portion with N 6/6 or another thermoplastic to form the oil pan assembly.
- thermoplastic resin capability SMC or another thermoset may be used in those areas.
- Embodiments of the present disclosure may strategically use materials to maximize benefits of their unique properties.
- FIG. 1 illustrates a perspective top view of an oil pan assembly 100, according to an embodiment of the present disclosure.
- the oil pan assembly 100 may include a base 102 coupled to a perimeter wall 104 that upwardly extends from outer edges of the base 102.
- An upper flange 106 may outwardly extend from a top edge of the perimeter wall 104.
- the upper flange 106 may include a plurality of fastener retainers 108, each of which may be configured to receive a portion of a fastener that is used to secure the oil pan assembly 100 to a portion of a vehicle, such as an interior metal frame.
- An oil collection chamber 110 is defined between an upper surface 112 of the base 102, and interior surfaces 114 of the perimeter wall 104.
- the oil collection chamber 110 is configured to receive and retain transmission or motor oil.
- the base 102 may angle upwardly from an end 116 to an end 118, in order to facilitate the flow of oil from the end 118 to the end 116 by way of gravity.
- the oil pan assembly 100 may be sized and shaped differently than shown.
- the oil pan assembly 100 may be circular in shape.
- the oil pan assembly 100 may include more or less fastener retainers than shown.
- the flange 106 may not be contiguous around the perimeter of the oil pan assembly 100.
- the oil pan assembly 100 may not include the flange.
- the angle from the end 116 to the end 118 may be steeper or shallower than shown.
- the base 102 and the perimeter wall 104 may be formed of two different plastics.
- the base 102 (and the flange 106) may be a thermoplastic, such as Nylon 6/6 (N 6/6), while the perimeter wall 104 may be a thermoset, such as Sheet Molding Compound (SMC).
- SMC Sheet Molding Compound
- the thermoplastic base 102 and the thermoset perimeter wall 104 (and optionally the flange 106) combine to form the oil pan assembly 100, which is configured to increase performance for adverse environments (through the thermoset perimeter wall 104, which is configured to be proximate to areas of elevated temperature, for example) while minimizing or otherwise reducing overall cost (through use of the thermoplastic base 102 at locations that are not susceptible to elevated temperatures and/or forces).
- the perimeter wall 104 is configured to be at or proximate to a location that may be subjected to high temperatures and/or impacts that may otherwise deform and/or degrade a thermoplastic.
- the base 102 is at a location that may not be susceptible to such high temperatures and/or impacts, and may therefore be formed of the thermoplastic, in order to reduce the overall cost of the oil pan assembly 100.
- the oil pan assembly 100 provides a unique plastic hybrid design that provides temperature and impact resistance, while minimizing or otherwise reducing overall cost through the use of a lower cost thermoplastic resin at locations that are not susceptible to elevated temperatures and/or forces.
- the perimeter wall 104 is formed of thermoset SMC.
- the perimeter wall 104 may be formed through compression molding. Various shapes and geometries may be used.
- the thermoset SMC may be drawn deeper and is lighter than various metals.
- Temperature resistance may be desired along sides 118 of the oil pan assembly 100 due to exhaust routing 120 along the sides 118.
- the exhaust routing 120 may generate elevated temperatures that may potentially deform and/or degrade a thermoplastic.
- the perimeter wall 104 includes the sides 118, which are formed of the thermoset.
- Other areas of the oil pan assembly 100 such as the base 102 and the flange 106, may be formed from a thermoplastic, such as Nylon 6/6, which allows the efficient use of lower cost resin, and the flexibility to insert mold torque limiters or torque limiters with threaded fasteners (bolts), such as within the fastener retainers 108 of the flange 106.
- areas that are not to be subjected to elevated temperatures and/or forces may be overmolded onto the thermoset portions of the oil pan assembly 100.
- various other portions of the oil pan assembly 100 may be formed from thermoset or thermoplastic.
- at least a portion of the base 102 may be formed of a thermoset, while at least a portion of the perimeter wall 104 may be formed of a thermoplastic, depending on the locations that may be subjected to elevated temperatures, impact, and/or forces.
- FIG. 2 illustrates a cross-sectional view of the base 102 coupled to the perimeter wall 104 of the oil pan assembly 100, according to an embodiment of the present disclosure.
- the base 102 may be a generally flat, planar piece having outer edges 130 that securely connect to interior edges of a base-connecting portion 132 of the perimeter wall 104.
- the base-connecting portion 132 may generally be parallel to the base 102, and may connect to an upstanding rim 134 through a curved transition 136.
- the upstanding rim 134 may be approximately perpendicular to the base-connecting portion 132.
- the flange 106 outwardly extends from an upper portion 138 of the upstanding rim 134.
- the base 102 may have a thickness 140 that is greater than a thickness 142 of the perimeter wall 104.
- the thickness 140 may be at least twice the thickness 142.
- the base 102 may be thickened as shown to achieve adequate structural strength of desired molding properties.
- the thickness 140 and 142 may be greater or less than shown.
- Figure 3 illustrates a perspective top view of the perimeter wall 104, according to an embodiment of the present disclosure.
- the perimeter wall 104 may be formed of a thermoset, such as through compression molding.
- An opening 160 is formed through the perimeter wall 104.
- the opening 160 is sized and shaped to accommodate the base 102 (shown in Figures 1 and 2).
- the base 102 is positioned within the opening 160 and coupled to the perimeter wall 104, such as through bonding, adhesives, welding, and/or the like.
- the flange 106 is secured to the perimeter wall 104, such as through bonding, adhesives, welding, and/or the like.
- the fully-formed perimeter wall 104 may be positioned within a chamber of a mold, and thermoplastic may be injection molded into the chamber onto portions of the perimeter wall 104 to form the base 102 and/or the flange 106.
- FIG. 4 illustrates a flow chart of a method of forming an oil pan assembly, according to an embodiment of the present disclosure.
- a first portion of an oil pan assembly may be formed of a first plastic.
- the first portion may be a portion that is configured to be subjected to elevated temperatures and/or forces.
- the first portion may be a perimeter wall, and the first plastic may be a thermoset.
- the first portion may be formed by compression molding, and the first plastic may be thermoset SMC.
- a second portion of an oil pan assembly is formed from a second plastic that differs from the first plastic.
- the second portion may be a portion that is not to be subjected to elevated temperatures and/or forces.
- the second portion may be a base, and the second plastic may be a thermoplastic. It is to be understood that 202 may optionally occur concurrently with, before, or after 200.
- the first portion is coupled to the second portion to form the oil pan assembly.
- the first portion may be securely coupled to the second portion through chemical bonding, heating, adhesives, fasteners, welding, and/or the like.
- the first portion formed of the first plastic (such as thermoset SMC) may be positioned within an injection molding tool, and the second plastic may be over-molded onto the first portion.
- the first portion may be formed of thermoset SMC and placed into a mold.
- the second plastic such as N 6/6 or the like may be injection molded into the mold over the first portion of the thermoset SMC.
- embodiments of the present disclosure provide a hybrid oil assembly having portions that are formed of different plastics. Portions that are to have greater resistance to temperature, impact, and external forces are formed of a thermoset, while areas that are not susceptible to elevated temperatures and/or forces are formed of a thermoplastic, in order to reduce the overall cost of the oil pan assembly.
- embodiments of the present disclosure provide a lightweight oil pan assembly (in that it is not formed of metals) that maintains structural integrity when subjected to increased temperatures and/or forces. At the same time, embodiments of the present disclosure provide a lightweight assembly that is efficiently manufactured in a cost-effective manner.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112016001096.6T DE112016001096T5 (en) | 2015-04-07 | 2016-02-12 | OIL WHEN ARRANGEMENT |
JP2017552897A JP2018512539A (en) | 2015-04-07 | 2016-02-12 | Oil pan assembly |
US15/552,691 US20180045091A1 (en) | 2015-04-07 | 2016-02-12 | Oil pan assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201562143970P | 2015-04-07 | 2015-04-07 | |
US62/143,970 | 2015-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016164106A1 true WO2016164106A1 (en) | 2016-10-13 |
Family
ID=55447140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2016/017731 WO2016164106A1 (en) | 2015-04-07 | 2016-02-12 | Oil pan assembly |
Country Status (4)
Country | Link |
---|---|
US (1) | US20180045091A1 (en) |
JP (1) | JP2018512539A (en) |
DE (1) | DE112016001096T5 (en) |
WO (1) | WO2016164106A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4930469A (en) | 1988-09-12 | 1990-06-05 | Dr. Ing. H.C.F. Porsche Ag | Oil pan for an internal combustion engine |
US6131543A (en) | 1998-04-25 | 2000-10-17 | Daimlerchrysler Ag | Oil pan for an internal combustion engine |
EP1276974A1 (en) | 2000-04-26 | 2003-01-22 | Basf Aktiengesellschaft | Oil pan module for internal combustion engines |
US6584950B1 (en) | 2002-05-29 | 2003-07-01 | Bayer Corporation | Oil pan |
DE10302191A1 (en) * | 2003-01-20 | 2004-08-05 | Carcoustics Tech Center Gmbh | Acoustically effective oil casing especially for a motor vehicle engine gear includes a multilayer of plastic sandwiched between metal layers |
US20040154576A1 (en) * | 2003-02-10 | 2004-08-12 | Toyota Jidosha Kabushiki Kaisha | Foamed resin oil pan and method of fabrication thereof |
US7481196B2 (en) | 2005-06-09 | 2009-01-27 | Mann & Hummel Gmbh | Oil pan useful for an internal combustion engine |
US20100229821A1 (en) * | 2009-03-13 | 2010-09-16 | Filtrauto | Plastic Structural Oil Sump with Fitted-on Bottom for a Combustion Engine and Method of Fabricating such a Sump |
DE102012205078A1 (en) * | 2012-03-29 | 2013-10-02 | Zf Friedrichshafen Ag | Oil pan, particularly for motor vehicle, has tray body formed of fiber-reinforced plastic sheet, on which frame is formed by insert molding of plastic, where bearing surface has circumferential seal supported by fiber-reinforced plastic |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5084353A (en) * | 1989-05-12 | 1992-01-28 | Gencorp Inc. | Thermosetting in-mold coating compositions |
DE4334858C1 (en) * | 1993-10-13 | 1995-04-20 | Vaw Ver Aluminium Werke Ag | Oil pan (sump) and process for the production thereof |
US5529826A (en) * | 1994-02-15 | 1996-06-25 | Tailor; Dilip K. | Fabric-faced thermoplastic composite panel |
US6491551B1 (en) * | 2000-09-29 | 2002-12-10 | Julian Electric Inc. | Adjustable stud for through the wall connectors |
DE102008063745A1 (en) * | 2008-12-18 | 2010-06-24 | Lanxess Deutschland Gmbh | Metal-plastic hybrid housing component |
DE102009013943A1 (en) * | 2009-03-19 | 2010-09-23 | Frank Will | Oil lubrication system |
-
2016
- 2016-02-12 JP JP2017552897A patent/JP2018512539A/en active Pending
- 2016-02-12 US US15/552,691 patent/US20180045091A1/en not_active Abandoned
- 2016-02-12 WO PCT/US2016/017731 patent/WO2016164106A1/en active Application Filing
- 2016-02-12 DE DE112016001096.6T patent/DE112016001096T5/en not_active Withdrawn
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4930469A (en) | 1988-09-12 | 1990-06-05 | Dr. Ing. H.C.F. Porsche Ag | Oil pan for an internal combustion engine |
US6131543A (en) | 1998-04-25 | 2000-10-17 | Daimlerchrysler Ag | Oil pan for an internal combustion engine |
EP1276974A1 (en) | 2000-04-26 | 2003-01-22 | Basf Aktiengesellschaft | Oil pan module for internal combustion engines |
US6705270B1 (en) | 2000-04-26 | 2004-03-16 | Basf Corporation | Oil pan module for internal combustion engines |
US6584950B1 (en) | 2002-05-29 | 2003-07-01 | Bayer Corporation | Oil pan |
EP1511924A1 (en) | 2002-05-29 | 2005-03-09 | Lanxess Corporation | Oil pan |
DE10302191A1 (en) * | 2003-01-20 | 2004-08-05 | Carcoustics Tech Center Gmbh | Acoustically effective oil casing especially for a motor vehicle engine gear includes a multilayer of plastic sandwiched between metal layers |
US20040154576A1 (en) * | 2003-02-10 | 2004-08-12 | Toyota Jidosha Kabushiki Kaisha | Foamed resin oil pan and method of fabrication thereof |
US7481196B2 (en) | 2005-06-09 | 2009-01-27 | Mann & Hummel Gmbh | Oil pan useful for an internal combustion engine |
US20100229821A1 (en) * | 2009-03-13 | 2010-09-16 | Filtrauto | Plastic Structural Oil Sump with Fitted-on Bottom for a Combustion Engine and Method of Fabricating such a Sump |
DE102012205078A1 (en) * | 2012-03-29 | 2013-10-02 | Zf Friedrichshafen Ag | Oil pan, particularly for motor vehicle, has tray body formed of fiber-reinforced plastic sheet, on which frame is formed by insert molding of plastic, where bearing surface has circumferential seal supported by fiber-reinforced plastic |
Also Published As
Publication number | Publication date |
---|---|
US20180045091A1 (en) | 2018-02-15 |
JP2018512539A (en) | 2018-05-17 |
DE112016001096T5 (en) | 2017-11-30 |
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