US2883001A - Combined timing gears and oil pump - Google Patents

Combined timing gears and oil pump Download PDF

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Publication number
US2883001A
US2883001A US671346A US67134657A US2883001A US 2883001 A US2883001 A US 2883001A US 671346 A US671346 A US 671346A US 67134657 A US67134657 A US 67134657A US 2883001 A US2883001 A US 2883001A
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Prior art keywords
oil
gears
engine
plates
gear
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US671346A
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Dierksen Adolph
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    • 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
    • F01M1/02—Pressure lubrication using lubricating pumps

Definitions

  • the primary object of the invention is to provide a timing gear mechanism for internal combustion engines adapted to pump oil to the lubrication system of the engine.
  • Another object of the invention is to provide a combined timing gear and oil pump mechanism in which only a portion of the width of the gear is utilized for oil pumping purposes.
  • a further object of the invention is to provide a combined timing gear and oil pump mechanism in which excess oil is utilized for lubricating the timing gears.
  • a still further object of the invention is to provide a combined timing gear and oil pump mechanism which is inexpensive to manufacture, efiicient in operation, and simple to install.
  • Figure 1 is a front elevation of the invention with the the cover installed.
  • Figure 2 is a fragmentary vertical cross-section taken along the line 22 of Figure 1, looking in the direction of the arrows.
  • Figure 3 is a front elevation of the invention with the cover removed.
  • Figure 4 is an exploded perspective view of the invention.
  • Figure 5 is an enlarged transverse fragmentary cross section taken along the line 5-5 of Figure 3, looking in the direction of the arrows.
  • Figure 6 is a view similar to Figure 5 of a modified form of the invention.
  • Figure 7 is an enlarged fragmentary vertical crosssection taken through a modified gear structure.
  • the reference numeral 10 indicates generally a combined timing gear and oil pump constructed in accordance with the invention.
  • the combined gear timing and pump mechanism 10 is constructed for use with an internal combustion engine 11 of conventional design having a crankshaft 12 and a camshaft 13 forming a part thereof.
  • a port 16 opens from the recess 15 into the engine 11 and is con nected by conduits (not shown) to the oil sump of the engine 11.
  • a port 17 similarly opens from the recess 15 at the opposite side thereof to the port 16 and is connected by conduits (not shown) to the pressure oil system of the engine 11.
  • the port 16 provides an inlet for the oil to reach the gear pump 10, while the port 17 provides an outlet carrying oil away therefrom.
  • a gear 18, having peripheral teeth 19 thereon, isfixed to the forward end of the crankshaft 12 and revolves therewith.
  • a gear 20 having teeth 21 formed in the peripheral edge thereof is fixed to the camshaft 13 and. revolves therewith.
  • the gears 18 and 20 have their teeth 19 and 21, respectively, meshing so that movement of the gear 18 moves the gear 20.
  • the gear 20 is somewhat larger than the gear 18, and the camshaft 13 will revolve somewhat faster than the crankshaft 12.
  • the gears 18 and 20 are peripherally grooved at 22 and 23, respectively, as can be best seen in Figure 2.
  • the forward face 14 of'theengine 11 is provided with a plurality of threaded bores 24 surrounding the recess 15, as can bebestseen in Figure 4.
  • a pair of oppositely disposed plates 25 and 26 are shaped to overlie the recess 15 and are provided with a plurality of bores 27 around their peripheral edges adapted to overlie the threaded bores 24 in the engine 11.
  • the plates 25, 26 are provided with semi-circular openings 28, 29 to engage in the groove 23, and semi-circular openings 30, 31 to engage in the groove 22, as can be best seen in Figure 4.
  • the plates 25, 26 are further provided with openings 32, 33 adjacent the lower edges thereof which overlie a port 34 formed in the forward face 14 of the engine 11 below the recess 15.
  • the plates 25, 26 have abutting edges 35 and 36 on opposite sides of each of the openings 28, 29, 30, 31, 32, 33, extending in a substantially straight vertical line.
  • the abutting edges 35, 36 of the plates 25, 26 are grooved as at 37, 38 and have a sealing gasket 39 extending therebetween to seal the plate 25 to the plate 26.
  • a domed cover 40 engages over the plates 25, 26 and has a flange 41 extending inwardly therefrom to engage the plates 25, 26.
  • the flange 41 is provided with a plurality of bores 42 aligning with the bores 27 in the plates 25, 26, and the cover 40 is secured to the engine 11 by stub bolts 43 extending through the bores 42, 27 and into the threaded bores 24.
  • the plate 25 has a bore 44 therein closed by a spring pressed check valve 45 of conventional construction so as to permit the flow of oil from the side of the plate 25 adjacent the engine 11 to the opposite side of the plate 25 upon a predetermined pressure being reached.
  • oil flows into the recess 15 from the port 16 and is pumped by the portion of the teeth 19 and 21 lying on the side of the plates 25, 26 toward the engine 11.
  • the oil pumped by the gears 18 and 20 is discharged through the port 17 to the pressure oil system of the engine 11.
  • the plates 25, 26 normally confine the oil to the area surrounding the gears 18 and 20 until the pressure of oil in the recess 15 exceeds a predetermined amount whereupon the valve 45 opens and oil passes through the plate 25 coming in contact with the portions of the gears 18, 20 lying on the side of the plates 25, 26 opposite the engine 11. Oil passing through the plate 25 lubricates the gears 18, 20 and flows through the openings 32, 33 in the plates 25, 26 into the drain port 34 in the forward face 14 of the engine 11.
  • a modified form of plate 25 and plate 26 is illustrated at 25a and 26a.
  • the plates 25a and 26a are of three-ply construction and have respectively a tongue 25b and a groove 26b formed thereon to interengage to seal the plate 25a to the plate 26a in place of the gasket 39 shown in the preferred form of the invention.
  • a gear 20a is illustrated having a peripheral.
  • the teeth 21a are provided with a plurality of notches 21b formed therein to release trapped oil and to eliminate the hum and other vibratory noises normally associated with timing gears.
  • a combined timing gear and oil pump mechanism comprising a pair of gears connected to an internal combustion engine, said engine having a chamber enclosing said gears, said gears having the teeth thereof in mesh, said gears having aligned peripheral grooves formed in the edges thereof extending below said teeth, means extending into each of said peripheral grooves dividing said gears and said chamber into oil pumping and non-oil pumping portions, and pressure responsive means asso' ciated with said last named means for relieving excess pressures in said oil pumping portion of said gears by directing a portion of said oil to the non-pumping portion of said gears.
  • a device as claimed in claim 1 wherein said means dividing said gears and said chamber comprises a pair of plates secured to the forward face of said engine and having portions thereof engaging in said grooves.
  • a device as claimed in claim 2 wherein the means relieving pressure in the oil pumping portions of said gears comprises a relief valve carried on one of said plates to release the excess pressures of oil from the pumping portions of said gears.

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

Description

April 21, 1959 A. DIERKSEN COMBINED TIMING GEARS AND on. PUMP 2 Sheets-Sheet 1 Filed July 11, 1957 INVENTOR- 11 ,526 Emmi/V ATTORNEY 5 April 21, 1959 DIERKSENY 2, COMBINED TIMING GEARS AND 011. PUMP Filed July 11. 1957 2 Sheets-Sheet 2 W/ Z QW ['7 yl fg $3 I if INVENTOR ATTORNEYS Unite S ates TheTpresentinvention 'rela'te's't'o combined timing gears and oir umps, "and "more particularly to such structures used in an internal combustion engine.
The primary object of the invention is to provide a timing gear mechanism for internal combustion engines adapted to pump oil to the lubrication system of the engine.
Another object of the invention is to provide a combined timing gear and oil pump mechanism in which only a portion of the width of the gear is utilized for oil pumping purposes.
A further object of the invention is to provide a combined timing gear and oil pump mechanism in which excess oil is utilized for lubricating the timing gears.
A still further object of the invention is to provide a combined timing gear and oil pump mechanism which is inexpensive to manufacture, efiicient in operation, and simple to install.
Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings, in which:
Figure 1 is a front elevation of the invention with the the cover installed.
Figure 2 is a fragmentary vertical cross-section taken along the line 22 of Figure 1, looking in the direction of the arrows.
Figure 3 is a front elevation of the invention with the cover removed.
Figure 4 is an exploded perspective view of the invention.
Figure 5 is an enlarged transverse fragmentary cross section taken along the line 5-5 of Figure 3, looking in the direction of the arrows.
Figure 6 is a view similar to Figure 5 of a modified form of the invention.
Figure 7 is an enlarged fragmentary vertical crosssection taken through a modified gear structure.
Referring now to the drawings in detail wherein like reference characters indicate like parts throughout the several figures, the reference numeral 10 indicates generally a combined timing gear and oil pump constructed in accordance with the invention.
The combined gear timing and pump mechanism 10 is constructed for use with an internal combustion engine 11 of conventional design having a crankshaft 12 and a camshaft 13 forming a part thereof.
The forward face 14 of the engine 11 is recessed rearwardly at 15 in an area surrounding the crankshaft 12 and camshaft 13, as best seen in Figure 4. A port 16 opens from the recess 15 into the engine 11 and is con nected by conduits (not shown) to the oil sump of the engine 11. A port 17 similarly opens from the recess 15 at the opposite side thereof to the port 16 and is connected by conduits (not shown) to the pressure oil system of the engine 11.
The port 16 provides an inlet for the oil to reach the gear pump 10, while the port 17 provides an outlet carrying oil away therefrom.
A gear 18, having peripheral teeth 19 thereon, isfixed to the forward end of the crankshaft 12 and revolves therewith. A gear 20 having teeth 21 formed in the peripheral edge thereof is fixed to the camshaft 13 and. revolves therewith.
The gears 18 and 20 have their teeth 19 and 21, respectively, meshing so that movement of the gear 18 moves the gear 20. The gear 20 is somewhat larger than the gear 18, and the camshaft 13 will revolve somewhat faster than the crankshaft 12. The gears 18 and 20 are peripherally grooved at 22 and 23, respectively, as can be best seen in Figure 2.
The forward face 14 of'theengine 11 is provided with a plurality of threaded bores 24 surrounding the recess 15, as can bebestseen in Figure 4.
A pair of oppositely disposed plates 25 and 26 are shaped to overlie the recess 15 and are provided with a plurality of bores 27 around their peripheral edges adapted to overlie the threaded bores 24 in the engine 11.
The plates 25, 26 are provided with semi-circular openings 28, 29 to engage in the groove 23, and semi-circular openings 30, 31 to engage in the groove 22, as can be best seen in Figure 4.
The plates 25, 26 are further provided with openings 32, 33 adjacent the lower edges thereof which overlie a port 34 formed in the forward face 14 of the engine 11 below the recess 15.
The plates 25, 26 have abutting edges 35 and 36 on opposite sides of each of the openings 28, 29, 30, 31, 32, 33, extending in a substantially straight vertical line. The abutting edges 35, 36 of the plates 25, 26 are grooved as at 37, 38 and have a sealing gasket 39 extending therebetween to seal the plate 25 to the plate 26.
A domed cover 40 engages over the plates 25, 26 and has a flange 41 extending inwardly therefrom to engage the plates 25, 26. The flange 41 is provided with a plurality of bores 42 aligning with the bores 27 in the plates 25, 26, and the cover 40 is secured to the engine 11 by stub bolts 43 extending through the bores 42, 27 and into the threaded bores 24.
While the present invention has not been illustrated with gaskets, it should be understood that they may be used between the plates 25, 26 and the engine 11, as well as between the cover 40 and the plates 25, 26.
The plate 25 has a bore 44 therein closed by a spring pressed check valve 45 of conventional construction so as to permit the flow of oil from the side of the plate 25 adjacent the engine 11 to the opposite side of the plate 25 upon a predetermined pressure being reached.
In the use and operation of the invention, oil flows into the recess 15 from the port 16 and is pumped by the portion of the teeth 19 and 21 lying on the side of the plates 25, 26 toward the engine 11. The oil pumped by the gears 18 and 20 is discharged through the port 17 to the pressure oil system of the engine 11.
The plates 25, 26 normally confine the oil to the area surrounding the gears 18 and 20 until the pressure of oil in the recess 15 exceeds a predetermined amount whereupon the valve 45 opens and oil passes through the plate 25 coming in contact with the portions of the gears 18, 20 lying on the side of the plates 25, 26 opposite the engine 11. Oil passing through the plate 25 lubricates the gears 18, 20 and flows through the openings 32, 33 in the plates 25, 26 into the drain port 34 in the forward face 14 of the engine 11.
'In Figure 6, a modified form of plate 25 and plate 26 is illustrated at 25a and 26a. The plates 25a and 26a are of three-ply construction and have respectively a tongue 25b and a groove 26b formed thereon to interengage to seal the plate 25a to the plate 26a in place of the gasket 39 shown in the preferred form of the invention.
In Figure 7, a gear 20a is illustrated having a peripheral.
groove 23a formed therein for the same purpose as the groove 23. The teeth 21a are provided with a plurality of notches 21b formed therein to release trapped oil and to eliminate the hum and other vibratory noises normally associated with timing gears. I
Having thus described the preferred embodiments of the invention, it should be understood that numerous structural modifications and adaptations in addition to those illustrated, may be employed without departing from the scope of the appended claims.
What is claimed is:
1. A combined timing gear and oil pump mechanism comprising a pair of gears connected to an internal combustion engine, said engine having a chamber enclosing said gears, said gears having the teeth thereof in mesh, said gears having aligned peripheral grooves formed in the edges thereof extending below said teeth, means extending into each of said peripheral grooves dividing said gears and said chamber into oil pumping and non-oil pumping portions, and pressure responsive means asso' ciated with said last named means for relieving excess pressures in said oil pumping portion of said gears by directing a portion of said oil to the non-pumping portion of said gears.
2. A device as claimed in claim 1 wherein said means dividing said gears and said chamber comprises a pair of plates secured to the forward face of said engine and having portions thereof engaging in said grooves.
3. A device as claimed in claim 2 wherein the means relieving pressure in the oil pumping portions of said gears comprises a relief valve carried on one of said plates to release the excess pressures of oil from the pumping portions of said gears.
References Cited in the file of this patent UNITED STATES PATENTS
US671346A 1957-07-11 1957-07-11 Combined timing gears and oil pump Expired - Lifetime US2883001A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4185717A (en) * 1978-05-08 1980-01-29 General Motors Corporation Engine lubricating oil pump
FR2433636A1 (en) * 1978-08-17 1980-03-14 Maschf Augsburg Nuernberg Ag NEW DESIGN OIL PUMP FOR HEAT ENGINES
US4747762A (en) * 1983-01-10 1988-05-31 Fairbairn International Pty. Ltd. Fluid machine
DE10201364A1 (en) * 2002-01-16 2003-08-14 Porsche Ag Cylinder head, for an IC motor, uses the cogwheel gearing between the camshafts as a fluid pump, to reduce the motor weight
US20040108167A1 (en) * 2002-12-05 2004-06-10 Elliott Christopher M. Variable resistance control of a gear train oil pump
US6814044B2 (en) 2002-12-05 2004-11-09 Caterpillar Inc Integrated gear train oil pump
US20050252471A1 (en) * 2004-05-14 2005-11-17 S & S Cycle, Inc. Twin cylinder motorcycle engine
US20100037844A1 (en) * 2008-08-13 2010-02-18 Dan Kinsey Cylinder head and rocker arm assembly for internal combustion engine
US20110150671A1 (en) * 2009-12-21 2011-06-23 Eaton Corporation Supercharger timing gear oil pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1083329A (en) * 1911-03-23 1914-01-06 Vincenzo Lancia Lubrication mechanism for combustion-engines.
US1585731A (en) * 1922-10-16 1926-05-25 Frank J Oakes Internal-combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1083329A (en) * 1911-03-23 1914-01-06 Vincenzo Lancia Lubrication mechanism for combustion-engines.
US1585731A (en) * 1922-10-16 1926-05-25 Frank J Oakes Internal-combustion engine

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4185717A (en) * 1978-05-08 1980-01-29 General Motors Corporation Engine lubricating oil pump
FR2433636A1 (en) * 1978-08-17 1980-03-14 Maschf Augsburg Nuernberg Ag NEW DESIGN OIL PUMP FOR HEAT ENGINES
US4747762A (en) * 1983-01-10 1988-05-31 Fairbairn International Pty. Ltd. Fluid machine
DE10201364A1 (en) * 2002-01-16 2003-08-14 Porsche Ag Cylinder head, for an IC motor, uses the cogwheel gearing between the camshafts as a fluid pump, to reduce the motor weight
US20040108167A1 (en) * 2002-12-05 2004-06-10 Elliott Christopher M. Variable resistance control of a gear train oil pump
US6814044B2 (en) 2002-12-05 2004-11-09 Caterpillar Inc Integrated gear train oil pump
US20050252471A1 (en) * 2004-05-14 2005-11-17 S & S Cycle, Inc. Twin cylinder motorcycle engine
US20070266969A1 (en) * 2004-05-14 2007-11-22 S & S Cycle, Inc. Twin cylinder motorcycle engine
US20070266987A1 (en) * 2004-05-14 2007-11-22 S & S Cycle, Inc. Twin cylinder motorcycle engine
US7581525B2 (en) 2004-05-14 2009-09-01 S & S Cycle, Inc. Twin cylinder motorcycle engine
US7644694B2 (en) 2004-05-14 2010-01-12 S&S Cycle, Inc. Collapsible pushrod assembly and method of installing a collapsible pushrod assembly
US20100037844A1 (en) * 2008-08-13 2010-02-18 Dan Kinsey Cylinder head and rocker arm assembly for internal combustion engine
US20110150671A1 (en) * 2009-12-21 2011-06-23 Eaton Corporation Supercharger timing gear oil pump
WO2011077230A3 (en) * 2009-12-21 2012-08-23 Eaton Corporation Supercharger timing gear oil pump
CN102971536A (en) * 2009-12-21 2013-03-13 伊顿公司 Supercharger timing gear oil pump
US8932033B2 (en) * 2009-12-21 2015-01-13 Eaton Corporation Supercharger timing gear oil pump
CN102971536B (en) * 2009-12-21 2016-01-13 伊顿公司 Pressurized machine timing gear oil pump

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