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
  • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D27/00—Cartridge filters of the throw-away type
  • B01D27/08—Construction of the casing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D27/00—Cartridge filters of the throw-away type
  • B01D27/10—Safety devices, e.g. by-passes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/30—Filter housing constructions
  • B01D35/306—Filter mounting adapter
• • 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
  • F01M1/00—Pressure lubrication
  • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
  • F01M2001/105—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements
  • F01M2001/1092—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements comprising valves bypassing the filter

Definitions

• the present invention relates generally to a bypass oil filtering system for an internal combustion engine, and more particularly to an adapter for connect ⁇ ing a bypass oil filter to an engine lubrication system while leaving the full flow filter in place.
• a full flow oil filter In general, internal combustion lubrication systems operate on either a full flow or bypass princi ⁇ ple. In full flow operation, the entire circulating oil stream is passed through the engine oil filter (referred to as a full flow oil filter) before it returns to the engine. In a bypass system, only a portion of the circulating oil strealrt is passed through the engine oil filter (referred to as a bypass oil filter) prior to being returned to the engine.
• the full flow filter and the bypass filter each offer benefits not found in the other.
• the bypass oil filter will typically be more efficient and achieve a higher degree of contaminant removal than the full flow filter, but filters the oil less frequently.
• the full flow filter filters the oil more often, but must use a relatively coarse filtering media in order to pass the entire volume of circulating oil required to lubricate the engine.
• a coarse media does not remove small contaminant particles, causing sludge deposits and contributing to engine wear.
• bypass filters have been connected to full flow lubrication systems by means of an adapter placed between the full flow filter mounting block and the full flow filter itself.
• the oil is returned to the engine block typically by tapping the oil pan or by using a hollow bolt. The need to punch a hole in the oil pan or otherwise tamper with the engine block is undesirable and it would therefore be useful to provide an adapter having means both for supplying dirty oil to the bypass filter and returning the filtered oil to the engine.
• a bypass oil filter is described in U.S. Patent No. 3,308,956 to Yee, et al.
• an oil filter adapter for connecting a bypass filter to an internal combustion engine is disclosed in U.S. Patent no. to Sanderson.
• the present invention provides an adapter which may be mounted on a conventional filter mounting block on an internal combustion engine having a full flow lubrication system.
• the adapter includes means for passing the major portion of the circulating oil flow to the full flow filter which is mounted directly thereon.
• the adapter also includes means for providing a bypass oil flow, which comprises from about 5 to 25% of the total circulating oil flow, to a bypass filter and for returning the bypass stream after it has been filtered to the engine. In this, way, the ability of a bypass filter to reduce sludge and other small particu- lates in the circulating oil stream may be enjoyed on an engine having a full flow lubrication system.
• the adapter comprises a body having various passages formed therein and an insert which couples directly to both the engine mounting block and the full flow filter to secure the assembly of the mounting block, the filter and the adapter tightly together.
• the body includes a central opening defining three sections of increasing cross-sectional area.
• the face of the adapter which includes the smallest section of the passage also includes an annular channel formed therein for receiving dirty oil from the mounting block.
• An axial passage connects the annular channel with the full flow filter to pass the majority of the oil to said filter.
• a first radial passage defines the dirty oil outlet for the bypass filter.
• a second radial passage defines the clean oil'"inlet from the bypass filter and is in fluid communication with the second section of the central opening.
• the insert includes means for securing both the filter mounting block and the full flow filter and acts as a bridge in connecting the two.
• the insert may be inserted into the central passage of the body and holds the body in proper alignment with the mounting block and the full flow filter when so connected. Additionally, the insert and the second section of the central opening of the body together define an annular chamber which receives the clean oil flowing in through the second radial passage.
• the insert further includes an axial passage for flowing clean oil from the full flow filter to the mounting block and at least one radial passage allowing clean oil from the annular chamber to flow into the axial passage and eventually return to the engine.
• the bypass oil filter adapter of the present invention provides a particularly compact device for
• OMPI connecting a bypass filter to an engine having a conventional full flow lubrication system.
• the connections to the adapter for the bypass filter may be oriented as desired for convenient connection to the bypass filter.
• FIG. 1 is an exploded view showing the filter adapter of the present invention in relation to a conventional filter mounting block and a full flow oil filter.
• Fig. 2 is a top view of the adapter of the present invention.
• Fig. 3 is a sectional view taken along line 3-3 of Fig. 2.
• an adapter 10 may be mounted on an oil filter mounting block 12-of an internal combustion engine 14 (partly illustrated in Fig. 1) having a full flow lubrication system.
• an oil filter 16 (partly illustrated in Fig. 1), typically by a passage such as outlet 18, which terminates in a conical depression 20 formed in one end of the mounting block 12.
• the oil flow is returned to the engine through inlet 22 defined by a threaded stud 24 pro- jecting downward (as viewed in Fig. 1) from the apex of the conical depression 20.
• the adapter 10 of the present invention can be modified slightly to conform to the particular configu ⁇ ration encountered.
• the adapter 10 includes a body 36, typically an aluminum casting having a plurality of passages and voids formed therein, as will now be described.
• a central opening 38 defines three sections 40, 42 and 44 of successively larger cross-sectional area.
• a first radial conduit 46 extends between the middle section 42 of the central opening 38 and the outer cylindrical wall of the body 36. The conduit 46 defines the oil return from the bypass filter, as will be described in more detail hereinafter.
• An annular channel 48 is formed in the upper face (as viewed in Fig. 1) of the body 36 and surrounds the small section 40 of the central opening 38.
• the channel 48 is positioned so that it receives oil from the outlet 18 when the adapter 10 is mounted on the block 12.
• a plurality of axial conduits 50 define a passage from the annular channel 48 to the inlet ports 28 of the filter 16.
• a second radial conduit 52 defines a dirty oil outlet for connection to the bypass filter. Both the inlet 46 and the outlet 52 are threaded for convenient connection to flexible connect ⁇ ing lines (not shown) which may be routed as necessary to the remotely mounted bypass filter (not shown).
• An insert 60 includes an internally threaded cylinder 62, a flange 64 and an externally threaded nipple 66.
• An axial passage 68 includes a narrow portion 70 passing through the nipple 66 and a larger portion 72 which defines the threaded cylinder 62.
• a plurality of ports 74 are formed through the cylindrical wall 62 at a position sufficiently close to the flange 64 so that the passages are not blocked when the insert 60 is mounted on the mounting block stud 24.
• annular chamber 76 is defined by the second section 42 of the axial opening 38 and the outer cylindrical wall 62 of the insert. Further, by matching the diameter of the cylinder 62 with the internal diameter of the first section 40 of the opening 38, the upper end of the annular chamber is sealed. Typically, an O-ring 78 is provided to assure a tight seal. Additionally, the flange 64 on the insert 60 mates with a radial face 80 defined by the transition between the second section 42 and the third section 44 of the opening 38. This mating seals .the lower end of the annular chamber 76. Oil flows into the annular chamber 76 from the bypass filter by means of the first radial conduit 46.
• the chamber then forms a header which evenly distributes the oil among the several radial passages 74 in the insert 60.
• the chamber 76 allows the body 36 to be rotated relative to the insert 60 without affecting the passage of oil into the axial passage 68 of the insert 60. This feature is important since it allows the assembly of the full flow filter 16, the adapter 10 and the mounting block 12 to be fully tightened regard ⁇ less of the rotational orientation of the adapter body 36 relative to the mounting block 12 and/or the filter 16.
• the connections 46 and 52 may be rotated relative to the block 12 as convenient to allow access to said connections.
• An annular groove 84 formed in the upper face of the body 36 receives a sealing ring 86 which prevents oil leakage between the adapter 10 and the filter mounting block 12.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Applications Claiming Priority (1)

Publications (1)

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ID=22175005

Family Applications (1)

Country Status (2)

Families Citing this family (2)

Family Cites Families (9)

• 1983
  • 1983-04-13 WO PCT/US1983/000541 patent/WO1984004133A1/en unknown
  • 1983-04-13 EP EP83901676A patent/EP0141807A1/de not_active Withdrawn

Non-Patent Citations (1)

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