US3712763A - Sleeve metering collar adjusting lever - Google Patents

Sleeve metering collar adjusting lever Download PDF

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Publication number
US3712763A
US3712763A US00073464A US3712763DA US3712763A US 3712763 A US3712763 A US 3712763A US 00073464 A US00073464 A US 00073464A US 3712763D A US3712763D A US 3712763DA US 3712763 A US3712763 A US 3712763A
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control shaft
lever
plunger
collar
legs
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Expired - Lifetime
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US00073464A
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J Parks
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Caterpillar Inc
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Caterpillar Tractor Co
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Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F02M59/243—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movement of cylinders relative to their pistons
    • F02M59/246—Mechanisms therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/361—Valves being actuated mechanically

Definitions

  • ABSTRACT [52] [1.8. CI. ..417/499 An adjus ing l ver for a leeve me ng ollar on a [51 Int. Cl. ..F04b 39/10 plunger p having a tang for cooperative insertion 58 Field of Search ..417/2s9, 499,440 into an annulus in the collar for imparting movement thereto.
  • the lever is bifurcated and mounted on a [56] Reerences Cited control shaft having an adjustment bore located therein.
  • a tool having an eccentric projection adapted UNITED STATES PATENTS to be fitted within the bore serves to rotate the lever on the control shaft and thereby calibrate the sleeve 1,369,666 2 1921 Johnson &417 499 metering collar.
  • 2,657,631 ll/l953 Evans ..4l7/289 2,965,087 12/1960 Bischoff et al ..4l7/289 3 Claims, 5 Drawing Figures PATENTrEm-m 2s m sum 1 or 3 INVENTORS JOHN H.
  • This invention relates generally to a sleeve metering fuel injection pump and more particularly to a new and improved adjusting lever for actuating the sleeve metering collar.
  • a plurality of control pins or links extend through a corresponding number of bores in a longitudinally oriented control shaft.
  • the control pins or links engage sleeve metering collars the function of which is to control the volume of fuel delivered to each cylinder.
  • Rotational movement of the control shaft is transformed by the control links into axial movement of the collar relative to a fuel outlet port.
  • the eccentric construction allows only limited movement for providing calibration of the collar.
  • this prior art construction requires producing the bores in the control shaft such that they are in line on the shaft within very close tolerances. This results in increased machining costs.
  • the point contact provided by the eccentric with the collar results in a considerable amount of wear due to the small area of contact between moving parts. This results in the need for frequent adjustment and/or replacement of the parts.
  • FIG. I is a side elevation view of a multi-plunger fuel injection pump partly cut away to show a single plunger and attendant structure including a single adjusting lever.
  • FIG. 2 is a vertical cross-section of the pump taken along lines l-l of FIG. 1.
  • FIG. 3 is a vertical cross-section taken along the lines III-III of FIG. 1 and showing a front view of the sleeve metering collar and adjusting lever of this invention in detail as well as an adjustment tool for use therewith.
  • FIG. 4 is an end view of the sleeve metering collar and adjusting lever with adjustment tool taken along the lines lV-IV of FIG. 3.
  • FIG. 5 is an isometric view of the adjusting lever illustrating its attachment means.
  • FIGS. 1 and 2 there is shown generally at 10 a multi-plunger fuel injection pump including therein the improved sleeve metering collar and adjusting lever of this invention.
  • the basic structure and operation of the pump is similar to that disclosed in the previously cross-referenced patents to Parks and Maxwell et al. Rather than utilizing an eccentric arrangement as disclosed in those patents, the instant invention utilizes a bifurcated adjustment lever generally shown at 12.
  • the lever generally comprises a tang means 14 which is secured to control shaft 16 by means of a bolt 18 extending through a hole in leg 20 and being threadably secured to leg 22 of the lever.
  • Tang means 14 engages annular groove or annulus 24 in sleeve metering collar 26.
  • Rotation of control shaft 16 in either the clockwise or counter-clockwise direction is produced by the movement of a piston 30.
  • a more detailed description of the operation of the piston to rotate the control shaft may be bad, if needed, by reference to the previously cross-referenced patents to Parks and Maxwell et al. It is sufficient to say that rotation of the control shaft is transmitted through lever 12 to reciprocate collar 26 and thereby to determine the quantity of fuel which is injected into a cylinder of an engine.
  • a plurality of levers 12 are utilized, one for each pump cylinder.
  • each lever In order to insure that the desired equal amount of fuel is injected into each cylinder of the engine from the pump for a given governor setting, each lever must be individually adjusted to establish a critical dimension a" as shown in FIG. 2. This dimension is established from collar 26 to the fuel inlet port 28 of the plunger.
  • the critical dimension a is established by adjusting lever 12 in the following manner.
  • Bolt 18 is loosened such that the legs 20, 22 expand away from shaft 16 and the lever is freely rotatable on the shaft.
  • a generally cylindrical tool 32 having a cylindrical eccentric projection member 34 on one end is placed into the space between legs 20, 22 until member 34 engages close-fitting bore 36 in shaft 16.
  • cylindrical tool 32 is of a diameter closely approximating the height of the space between legs 20 and 22. This dimensional relation is critical since rotation of tool 30 about the axis defined by its eccentric projection will cause a side of the tool to contact an inner surface 37 or 38 of legs or 22, respectively, and thereby urge lever 12 in a clockwise or counterclockwise direction depending on the direction of rotation of tool 32.
  • a plunger pump having a body, at least one plunger in said body, a collar on each plunger, lever means connected to each plunger operable by a control shaft for varying the volume of fluid delivered by each plunger stroke, said lever means comprising a bifurcated member defining a pair of legs having a gap therebetween, said control shaft being positioned within said gap, releasable locking means for drawing said legs together and thereby grip said control shaft to prevent rotational movement of said lever means with respect to said control shaft, bore means in said control shaft intermediate said legs for receiving an adjustment tool, said tool being elongated with the diameter thereof being approximately equal to the height of the gap and having an eccentric projection extending from one end being closely fitted within said bore means whereby said lever means may be rotatably adjusted with respect to said control shaft subsequent to releasing said locking means.
  • releasable locking means include a bolt extending through a hole in one of said pair of legs and is threadably engaged with the other leg thereof.

Abstract

An adjusting lever for a sleeve metering collar on a plunger pump having a tang for cooperative insertion into an annulus in the collar for imparting movement thereto. The lever is bifurcated and mounted on a control shaft having an adjustment bore located therein. A tool having an eccentric projection adapted to be fitted within the bore serves to rotate the lever on the control shaft and thereby calibrate the sleeve metering collar.

Description

United States Patent 1 m1 3,712,763 Parks 1 Jan. 23, 1973 SLEEVE METERING COLLAR FOREIGN PATENTS OR APPLICATIONS ADJUSTING LEVER 660,360 [0/1949 Great Britain ..4l7/499 [75] inventor: John H. Parks, Peoria, ll]. 404,248 6/1933 Great Britain ..4l7/494 9l3,l72 5/1946 France ..4l7/494 [73] Assignee: Caterpillar Tractor Co., Peoria, lll.
p 1 Primary Examiner-William L. Freeh Attorney-Fryer, Tjensvold, Feix, Phillips & Lempio [21] App]. No.: 73,464
[57] ABSTRACT [52] [1.8. CI. ..417/499 An adjus ing l ver for a leeve me ng ollar on a [51 Int. Cl. ..F04b 39/10 plunger p having a tang for cooperative insertion 58 Field of Search ..417/2s9, 499,440 into an annulus in the collar for imparting movement thereto. The lever is bifurcated and mounted on a [56] Reerences Cited control shaft having an adjustment bore located therein. A tool having an eccentric projection adapted UNITED STATES PATENTS to be fitted within the bore serves to rotate the lever on the control shaft and thereby calibrate the sleeve 1,369,666 2 1921 Johnson .....417 499 metering collar. 2,657,631 ll/l953 Evans ..4l7/289 2,965,087 12/1960 Bischoff et al ..4l7/289 3 Claims, 5 Drawing Figures PATENTrEm-m 2s m sum 1 or 3 INVENTORS JOHN H. PARKS 7 'e ATTORNEYS PAIENTEDmzs ms SHEET 2 0F 3 y VV/w I VENTORS PARKS JOH ATTORNEYS PATENTEDJAN 23 1915 SHEET 3 OF 3 INVENTORS JO HN H. PARKS SLEEVE METERING COLLAR ADJUSTING LEVER CROSS REFERENCE TO RELATED PATENTS Pertinent cross-references are Parks, U.S. Pat. No.
BACKGROUND AND SUMMARY OF THE INVENTION This invention relates generally to a sleeve metering fuel injection pump and more particularly to a new and improved adjusting lever for actuating the sleeve metering collar.
In prior art fuel injection pumps, e.g. that disclosed in the cross-referenced Parks patent, a plurality of control pins or links extend through a corresponding number of bores in a longitudinally oriented control shaft. The control pins or links engage sleeve metering collars the function of which is to control the volume of fuel delivered to each cylinder. Rotational movement of the control shaft is transformed by the control links into axial movement of the collar relative to a fuel outlet port. In order to accomplish such movement it is necessary to form the end of the control link in contact with the collar eccentric to the axis of the control link. Adjusting the control link moves the collar axially in either direction to provide proper calibration to the collar.
The construction thus provided is disadvantageous for several reasons. First of all, the eccentric construction allows only limited movement for providing calibration of the collar. Secondly, this prior art construction requires producing the bores in the control shaft such that they are in line on the shaft within very close tolerances. This results in increased machining costs. Thirdly, the point contact provided by the eccentric with the collar results in a considerable amount of wear due to the small area of contact between moving parts. This results in the need for frequent adjustment and/or replacement of the parts.
It is to a solution of these and other problems encountered with the prior art devices that this invention is directed.
It is therefore an object of this invention to provide an improved sleeve metering collar adjusting lever.
It is also an object of this invention to provide'an improved sleeve metering collar adjusting lever which is inexpensive to machine.
It is also an object of this invention to provide an improved sleeve metering collar adjusting lever which allows greater adjustability for calibration of the collar.
It is a still further object of this invention to provide an improved sleeve metering collar adjusting lever which has enhanced wear characteristics.
Other objects and advantages of the present invention will become apparent from the following description and claims and as illustrated in the accompanying drawings which, by way of illustration only, show a preferred embodiment of the invention and the principles of operation thereof. It is to be understood that the scope of the invention is not to be limited thereto, but is to be defined by the scope of the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a side elevation view of a multi-plunger fuel injection pump partly cut away to show a single plunger and attendant structure including a single adjusting lever.
FIG. 2 is a vertical cross-section of the pump taken along lines l-l of FIG. 1.
FIG. 3 is a vertical cross-section taken along the lines III-III of FIG. 1 and showing a front view of the sleeve metering collar and adjusting lever of this invention in detail as well as an adjustment tool for use therewith.
FIG. 4 is an end view of the sleeve metering collar and adjusting lever with adjustment tool taken along the lines lV-IV of FIG. 3.
FIG. 5 is an isometric view of the adjusting lever illustrating its attachment means.
DETAILED DESCRIPTION Referring now to FIGS. 1 and 2 there is shown generally at 10 a multi-plunger fuel injection pump including therein the improved sleeve metering collar and adjusting lever of this invention. The basic structure and operation of the pump is similar to that disclosed in the previously cross-referenced patents to Parks and Maxwell et al. Rather than utilizing an eccentric arrangement as disclosed in those patents, the instant invention utilizes a bifurcated adjustment lever generally shown at 12. The lever generally comprises a tang means 14 which is secured to control shaft 16 by means of a bolt 18 extending through a hole in leg 20 and being threadably secured to leg 22 of the lever.
Tang means 14 engages annular groove or annulus 24 in sleeve metering collar 26. Rotation of control shaft 16 in either the clockwise or counter-clockwise direction is produced by the movement of a piston 30. It should be noted that a more detailed description of the operation of the piston to rotate the control shaft may be bad, if needed, by reference to the previously cross-referenced patents to Parks and Maxwell et al. It is sufficient to say that rotation of the control shaft is transmitted through lever 12 to reciprocate collar 26 and thereby to determine the quantity of fuel which is injected into a cylinder of an engine. When used with a multi-plunger pump as described in the aforementioned patents, a plurality of levers 12 are utilized, one for each pump cylinder. The operation of the device is as follows. In order to insure that the desired equal amount of fuel is injected into each cylinder of the engine from the pump for a given governor setting, each lever must be individually adjusted to establish a critical dimension a" as shown in FIG. 2. This dimension is established from collar 26 to the fuel inlet port 28 of the plunger.
As best seen in FIG. 3, the critical dimension a is established by adjusting lever 12 in the following manner. Bolt 18 is loosened such that the legs 20, 22 expand away from shaft 16 and the lever is freely rotatable on the shaft. A generally cylindrical tool 32 having a cylindrical eccentric projection member 34 on one end is placed into the space between legs 20, 22 until member 34 engages close-fitting bore 36 in shaft 16. It should be noted that cylindrical tool 32 is of a diameter closely approximating the height of the space between legs 20 and 22. This dimensional relation is critical since rotation of tool 30 about the axis defined by its eccentric projection will cause a side of the tool to contact an inner surface 37 or 38 of legs or 22, respectively, and thereby urge lever 12 in a clockwise or counterclockwise direction depending on the direction of rotation of tool 32. The lever is thereby rotated with respect to shaft 16 until the desired dimension a is achieved, as measured with a gauge. When dimension a is established, bolt 18 is tightened to secure lever 12 to shaft 16 and tool 32 is withdrawn. The above operation is repeated for each lever of a multi-plunger pump.
It is to be understood that the foregoing description is merely illustrative of preferred embodiments of the invention and that the scope of the invention is not to be limited thereto, but is to be determined by the scope of the appended claims.
What is claimed is:
1. In a plunger pump having a body, at least one plunger in said body, a collar on each plunger, lever means connected to each plunger operable by a control shaft for varying the volume of fluid delivered by each plunger stroke, said lever means comprising a bifurcated member defining a pair of legs having a gap therebetween, said control shaft being positioned within said gap, releasable locking means for drawing said legs together and thereby grip said control shaft to prevent rotational movement of said lever means with respect to said control shaft, bore means in said control shaft intermediate said legs for receiving an adjustment tool, said tool being elongated with the diameter thereof being approximately equal to the height of the gap and having an eccentric projection extending from one end being closely fitted within said bore means whereby said lever means may be rotatably adjusted with respect to said control shaft subsequent to releasing said locking means.
2. The invention of claim 1 wherein releasable locking means include a bolt extending through a hole in one of said pair of legs and is threadably engaged with the other leg thereof.
3, The invention of claim 1 wherein said bore means comprise a generally radially directed bore in said control shaft.

Claims (3)

1. In a plunger pump having a body, at least one plunger in said body, a collar on each plunger, lever means connected to each plunger operable by a control shaft for varying the volume of fluid delivered by each plunger stroke, said lever means comprising a bifurcated member defining a pair of legs having a gap therebetween, said control shaft being positioned within said gap, releasable locking means for drawing said legs together and thereby grip said control shaft to prevent rotational movement of said lever means with respect to said control shaft, bore means in said control shaft intermediate said legs for receiving an adjustment tool, said tool being elongated with the diameter thereof being approximately equal to the height of the gap and having an eccentric projection extending from one end being closely fitted within said bore means whereby said lever means may be rotatably adjusted with respect to said control shaft subsequent to releasing said locking means.
2. The invention of claim 1 wherein releasable locking means include a bolt extending through a hole in one of said pair of legs and is threadably engaged with the other leg thereof.
3. The invention of claim 1 wherein said bore means comprise a generally radially directed bore in said control shaft.
US00073464A 1970-09-18 1970-09-18 Sleeve metering collar adjusting lever Expired - Lifetime US3712763A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211520A (en) * 1978-01-20 1980-07-08 Caterpillar Tractor Co. Timing control for sleeve metering fuel system
EP0027790A1 (en) * 1979-10-15 1981-04-29 Friedmann & Maier Aktiengesellschaft Injection pump
US4661051A (en) * 1984-11-16 1987-04-28 Diesel Kiki Co., Ltd. Fuel injection pump with adjustable timing
US4706626A (en) * 1984-10-01 1987-11-17 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4708114A (en) * 1984-12-24 1987-11-24 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4737085A (en) * 1985-06-22 1988-04-12 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4770149A (en) * 1985-12-27 1988-09-13 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4840161A (en) * 1987-07-25 1989-06-20 Robert Bosch Gmbh Fuel injection pump for internal combustion engines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3724409A1 (en) * 1986-10-31 1988-05-19 Bosch Gmbh Robert FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1369666A (en) * 1920-05-29 1921-02-22 Ruben E Johnson Pump
GB404248A (en) * 1933-06-29 1934-01-11 Stanley Alder Improvements in fuel injection pumps for diesel engines
FR913172A (en) * 1941-06-26 1946-08-30 France Etat Injection pump
GB660360A (en) * 1949-10-20 1951-11-07 Victor Silberstein Improvements in and relating to variable delivery reciprocating pumps
US2657631A (en) * 1950-08-16 1953-11-03 Cav Ltd Liquid fuel pump
US2965087A (en) * 1958-01-29 1960-12-20 Bosch Arma Corp Fuel injection pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1369666A (en) * 1920-05-29 1921-02-22 Ruben E Johnson Pump
GB404248A (en) * 1933-06-29 1934-01-11 Stanley Alder Improvements in fuel injection pumps for diesel engines
FR913172A (en) * 1941-06-26 1946-08-30 France Etat Injection pump
GB660360A (en) * 1949-10-20 1951-11-07 Victor Silberstein Improvements in and relating to variable delivery reciprocating pumps
US2657631A (en) * 1950-08-16 1953-11-03 Cav Ltd Liquid fuel pump
US2965087A (en) * 1958-01-29 1960-12-20 Bosch Arma Corp Fuel injection pump

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211520A (en) * 1978-01-20 1980-07-08 Caterpillar Tractor Co. Timing control for sleeve metering fuel system
EP0027790A1 (en) * 1979-10-15 1981-04-29 Friedmann & Maier Aktiengesellschaft Injection pump
US4706626A (en) * 1984-10-01 1987-11-17 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4661051A (en) * 1984-11-16 1987-04-28 Diesel Kiki Co., Ltd. Fuel injection pump with adjustable timing
US4708114A (en) * 1984-12-24 1987-11-24 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4737085A (en) * 1985-06-22 1988-04-12 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4738601A (en) * 1985-06-22 1988-04-19 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4770149A (en) * 1985-12-27 1988-09-13 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4840161A (en) * 1987-07-25 1989-06-20 Robert Bosch Gmbh Fuel injection pump for internal combustion engines

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AS Assignment

Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515

Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515