WO2007126750A2 - Ensemble d'aspiration de l'huile - Google Patents

Ensemble d'aspiration de l'huile Download PDF

Info

Publication number
WO2007126750A2
WO2007126750A2 PCT/US2007/007450 US2007007450W WO2007126750A2 WO 2007126750 A2 WO2007126750 A2 WO 2007126750A2 US 2007007450 W US2007007450 W US 2007007450W WO 2007126750 A2 WO2007126750 A2 WO 2007126750A2
Authority
WO
WIPO (PCT)
Prior art keywords
oil
pipe
assembly
baffle plate
screen
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.)
Ceased
Application number
PCT/US2007/007450
Other languages
English (en)
Other versions
WO2007126750A3 (fr
Inventor
Martin W. Collins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of WO2007126750A2 publication Critical patent/WO2007126750A2/fr
Anticipated expiration legal-status Critical
Publication of WO2007126750A3 publication Critical patent/WO2007126750A3/fr
Ceased legal-status Critical Current

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
    • F01M2011/007—Oil pickup tube to oil pump, e.g. strainer
    • 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

  • the present invention relates generally to internal combustion engine lubrication systems and, more particularly, the invention relates to oil pickup pipe assemblies found in automobile lubrication systems.
  • an oil reservoir often referred to as an oil pan
  • An oil pickup assembly includes a tube extending into the oil pan and secured at one end to an engine block or pump device and at the other end is disposed within the volume of oil in the oil pan.
  • the oil pump causes oil from the oil pan to flow to various engine components for lubrication.
  • a metal baffle plate is positioned around the end of the pipe placed near the bottom of the oil pan.
  • the baffle plate inhibits splashing or splattering of the oil in the oil pan to ensure that a sufficient volume of oil remains in the bottom of the oil pan to keep the pickup end of the pickup pipe submerged under the oil surface, to ensure a proper flow of oil to the various engine components.
  • the baffle plate is secured in place to the oil pan with a multitude of metal fasteners, sometimes as many as ten or more such fasteners.
  • the oil pipe extends from its connection to the engine or oil pump at the top of the oil pan through an opening in the baffle plate and includes an inlet end submerged beneath the surface of the oil.
  • the present invention addresses the problems identified above and other disadvantages of known systems by providing a plastic pickup pipe that is integral with a plastic baffle plate.
  • the present invention provides an oil pickup assembly for an engine lubricating system with a pickup pipe having an inlet end, an outlet end and a length between the inlet end and the outlet end; and a baffle plate integrally formed with the pickup pipe and connected thereto along the pipe length.
  • the present invention provides an integral oil pickup assembly with a plastic baffle plate; and a plastic oil pickup pipe integrally formed with the baffle plate.
  • the present invention provides an oil lubrication system with a plastic pickup pipe having an inlet end and an outlet end, a screen assembly on the inlet end, and a plastic baffle plate integrally connected to a length of the pipe between the inlet and outlet ends of the pipe.
  • An advantage of the present invention is providing an oil pickup assembly in a vehicle lubrication system that is lighter in weight than known assemblies.
  • Another advantage of the present invention is providing an oil pickup assembly that has fewer individual parts requiring installation to complete the assembly.
  • Still another advantage of the present invention is providing an oil pickup assembly that can be assembled quickly and easily compared to known assemblies.
  • a further advantage of the present invention, in one form thereof, is providing a molded screen cap that is adapted for a snap fit connection to an oil pickup pipe, without the need for welding, brazing, coining or the like.
  • Yet another advantage of the present invention is providing an oil pickup assembly having a relatively straight pickup pipe compared to known designs, and a more consistent flow of oil from one pickup pipe to another of the same type and configuration.
  • FIG. 1 is a perspective view of an oil pickup assembly in accordance with the present invention
  • FIG. 2 is a perspective view of the oil pickup assembly shown in Fig. 1, the view being shown from an angle different than that of Fig. 1;
  • FIG. 3 is a plan view from the top of the oil pickup assembly
  • FIG. 4 is a perspective view of the bottom of the oil pickup assembly shown in the previous drawings.
  • Fig. 5 is a plan view of the bottom of the oil pickup assembly
  • Fig. 6 is an elevational view from the side of the oil pickup assembly
  • Fig. 7 is a cross-sectional view through the oil pickup assembly
  • Fig. 8 is a perspective view of the oil pickup pipe of the assembly
  • Fig. 9 is a perspective view of one form of screen assembly for the oil pickup assembly
  • FIG. 10 is a perspective view of a second embodiment of a screen assembly for the oil pickup assembly
  • FIG. 11 is a fragmentary cross-sectional view of a portion of an assembled screen assembly in accordance with the present invention.
  • Fig. 12 is a perspective view of a portion of the screen shown in Fig. 10;
  • Fig 13 is a perspective view of a further embodiment of the present invention.
  • Oil pickup assembly 20 includes an oil pipe 22 and a baffle plate 24 integrally formed therewith.
  • a detachable screen assembly 26 (Fig. 4) is connected to oil pipe 22.
  • Oil pipe 22 and baffle plate 24 are cast from plastic material as a single, integral, monolithic unit. Oil pipe 22 and baffle plate 24 can be made from the same material or can be molded from different materials, as required, in an overmolding process.
  • Nylon such as Polyamide 66 from DuPont Engineering Polymers with between about 30% to 35% ⁇ 2% glass fibers is believed to be a suitable material for both oil pipe 22 and baffle plate 24.
  • Other glass filled resins also are believed to be suitable, such as, for example and not by way of limitation, Polyamide 6 with about 15% glass fibers.
  • HTN nylons also may provide advantageous characteristics of heat resistance and strength.
  • Oil pipe 22 has an inlet end 30 configured for engaging screen assembly 26 and an outlet end 32 having a mounting flange 34 for attachment to an oil pump (not shown) or other engine component as required.
  • Flange 34 includes bolt holes 36 for purposes of attaching flange 34 to the oil pump (not shown) or other engine component with bolts (not shown) extending therethrough.
  • Oil pipe 22 defines a substantial length 38 between inlet end 30 and outlet end 32 and, in the exemplary embodiment, defines an elbow 40 from length 38 to outlet end 32.
  • Length 38 can be substantially straight as compared to the more complex configurations commonly found with known structures including oil pipes and baffles discrete from one another. In the past, it was known to design an oil pan and baffle independently, and to thereafter "fit" an oil pipe to the existing structure.
  • the shape of the oil pipe was often complex, having numerous bends and turns.
  • the structure of the present invention provides an efficient flow path for oil, and performs consistently from one unit to the next, since the interior shape is defined by the precision of a mold in which the pipe is cast. Since the relationship between the pipe and baffle plate 24 is defined in the mold, a suitable relationship can be selected to facilitate flow of oil through oil pipe 22, which can lead to a relatively straight configuration of oil pipe 22, together with a precisely formed elbow 40. Engine design requirements for oil pipe approach angles can be accommodated by adjusting elbow locations in the oil pickup assembly.
  • Injection molding can maintain a consistent pipe profile and bore diameter shot to shot after final design.
  • the pipe can be formed with no bend reduction as occurs in typical bending or thermo forming techniques used for metal pipes. Accordingly, fluid flow through oil pipe 22 can be optimized and will be consistent from one pipe 22 to another pipe 22.
  • Inlet end 30 defines an enlargement 42 for receiving and engaging screen assembly 26.
  • Enlargement 42 provides adequate surface area so that when assembled with a screen there is sufficient open area within the mesh of the screen to accommodate required oil flow therethrough. The features thereof will be described more fully hereinafter along with a more detailed description of screen assembly 26.
  • Baffle plate 24 is configured as necessary to fit in the interior volume of a specific oil pan configuration in which it is to be used. Accordingly, the outer shape of baffle plate 24 can vary from one installation of the present invention to an installation for a different engine and oil pan. Baffle plate 24 includes a plurality of mounting features 50 for receiving fasteners such as bolts (not shown) to secure oil pickup assembly 20 in an oil pan or engine block (not shown). The reduced weight of oil pickup assembly 20 of the present invention reduces the need for attachment and stabilization of the assembly relative to an oil pan.
  • the rigid, integral attachment of oil pipe 22 and baffle plate 24 provides rigidity and strength between them. Strategic ribbing and gussets are designed into the parts and produced during the molding process to provide the desired and required rigidity.
  • the rigid connection between flange 34 and the engine or oil pump also helps to rigidify, strengthen and position baffle plate 24. Accordingly, fewer mounting features and correspondingly fewer fasteners are required, thereby reducing weight and facilitating efficient assembly.
  • Baffle plate 24 includes a stiffening framework including a plurality of elongate, wall-like ribs 52 and gussets 54 to rigidify baffle plate 24. At least some of the ribs 52 can be integrally formed and connected to oil pipe 22 such as along length 38 thereof. Depending on the size and orientation of oil pipe 22 relative to baffle plate 24, more or fewer connection points can be provided between oil pipe 22 and baffle plate 24. For example, reinforcement ribs can be added between pipe 22 and baffle plate 24 around or near a hole 56 in baffle plate 24 through which oil pipe 22 extends. Fig.
  • FIG. 13 illustrates four ribs 58 interconnecting ribs 52 and oil pipe 22 to further control the deflection and inertia of screen assembly 26 that extends beneath the baffle plate. Sufficient ribs and connection points between baffle plate 24 and oil pipe 22 are provided to stabilize the assembly to withstand vibration and temperature characteristics commonly associated with oil pans and vehicle engine vibrations.
  • Oil is allowed to drain through baffle plate 24 via hole 56 and a plurality of apertures 60.
  • the number, size and locations of apertures 60 and/or other openings through baffle plate 24 are selected to provide the desired and necessary drainage through baffle plate 24.
  • Screen assembly 26 provides an initial barrier to prevent contaminants from entering oil pipe 22.
  • Screen assembly 26 can include a metallic, plastic or other screen element 62 and a separate metal or plastic ring 64.
  • Screen element 62 and ring 64 can be of known suitable materials including metal or plastic, including plastic similar to that used for pipe 22 and baffle plate 24.
  • screen assembly 26 can include a monolithic plastic cap 70, including a screen portion 72 and a ring portion 74.
  • screen assembly 26 is snap fit to enlargement 42, such as by using a plurality of deflectable tabs received in openings.
  • the deflectable tabs and openings can be provided in one or the other of enlargement 42 and rings 64 or 74.
  • ring 64 is shown having receiving holes 80
  • ring portion 74 is shown having deflectable tab 82 to be received in a receiving hole 84 (Fig. 11).
  • suitable deflectable tabs and receiving holes are provided and aligned for connection of screen assembly 26 to enlargement 42.
  • Fig. 11 the arrangement and location of suitable deflectable tabs and receiving holes are provided and aligned for connection of screen assembly 26 to enlargement 42.
  • ring 64 illustrates two such configurations on opposite sides of ring 64, whereas ring portion 74 illustrates a single such configuration on each side thereof.
  • enlargement 42 and screen assembly 26 can be of different shapes, such as round, oblong or oval, or other more complex shape.
  • the attachment of ring 64 or ring portion 74 to enlargement 42, whether of plastic or metal, can also be by welding, brazing, coining, adhesion or other suitable connecting arrangement.
  • Fig. 10 illustrates yet another feature of the present invention. It has been observed in known assemblies that if a user of an automobile runs over a foreign object, such as a curb or the like, the oil pan can be crushed inwardly. Since clearance between the bottom of the oil pan and screen assembly 26 can be relatively small, inward deflection of the bottom of the oil pan can further limit the space between the oil pan and screen assembly 26, and subsequently reduce oil flow therebetween. The vacuum generated during use can cause a seal to form between screen assembly 26 and the inwardly deflected oil pan. If this occurs, proper oil flow into oil pipe 20 can be affected adversely in such a way that insufficient oil is circulated to ensure proper lubrication of the engine. As illustrated in the embodiment of Fig.
  • a bottom surface 90 of the screen assembly is of a corrugated or wavy form. Contoured bottom surface 90 promotes oil flow into inlet 30 even if the oil pan is deflected inwardly toward surface 90 by maintaining a minimal space between at least portions of surface 90 and the oil pan.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

Un ensemble d'aspiration de l'huile destiné à un système de lubrification d'une automobile comprend un tuyau d'aspiration de l'huile en plastique et une plaque de carter d'huile en plastique ne formant qu'une seule pièce.
PCT/US2007/007450 2006-04-03 2007-03-27 Ensemble d'aspiration de l'huile Ceased WO2007126750A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78863506P 2006-04-03 2006-04-03
US60/788,635 2006-04-03

Publications (2)

Publication Number Publication Date
WO2007126750A2 true WO2007126750A2 (fr) 2007-11-08
WO2007126750A3 WO2007126750A3 (fr) 2008-12-24

Family

ID=38656002

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/007450 Ceased WO2007126750A2 (fr) 2006-04-03 2007-03-27 Ensemble d'aspiration de l'huile

Country Status (1)

Country Link
WO (1) WO2007126750A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9677436B2 (en) 2014-04-16 2017-06-13 Avl Powertrain Engineering, Inc. Sump having temperature-controlled jalousie divider

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767736A (en) * 1953-03-25 1956-10-23 Frank P Lackinger Fluid pickup
CA984693A (en) * 1973-11-22 1976-03-02 Bombardier Limited Air intake silencer for a two-stroke internal combustion engine
GB1539879A (en) * 1975-04-14 1979-02-07 Automotive Prod Co Ltd Liquid pressure apparatus
JPH0748965Y2 (ja) * 1989-10-20 1995-11-13 日産自動車株式会社 エンジンのオイルパン

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9677436B2 (en) 2014-04-16 2017-06-13 Avl Powertrain Engineering, Inc. Sump having temperature-controlled jalousie divider

Also Published As

Publication number Publication date
WO2007126750A3 (fr) 2008-12-24

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