US3895537A - Centrifugal rpm regulator for internal combustion engines - Google Patents

Centrifugal rpm regulator for internal combustion engines Download PDF

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Publication number
US3895537A
US3895537A US423743A US42374373A US3895537A US 3895537 A US3895537 A US 3895537A US 423743 A US423743 A US 423743A US 42374373 A US42374373 A US 42374373A US 3895537 A US3895537 A US 3895537A
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US
United States
Prior art keywords
centrifugal
arm
mass
internal combustion
combustion engines
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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.)
Expired - Lifetime
Application number
US423743A
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English (en)
Inventor
Herbert Bechstein
Hans-Jurgen Jaenke
Rolf Muller
Ernst Ritter
Heinrich Staudt
Helmut Tomasch
Alois Urlberger
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of US3895537A publication Critical patent/US3895537A/en
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/04—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by mechanical means dependent on engine speed, e.g. using centrifugal governors

Definitions

  • centrifugal rpm regulator for internal combustion engines is provided with at least two angular, centrifugal weights.
  • Each centrifugal weight includes an angled lever and a centrifugal mass fixedly connected to one lever arm of the angled lever. The opposite lever arm actuates a regulating sleeve.
  • Each lever has a bearing location in the region of connection of its two lever arms by means of which the centrifugal weights are pivotally mounted on a centrifugal weight carrier.
  • the lever arm to which its centrifugal mass is connected has an irregular shape.
  • the centrifugal masses desirably consist of metal which can be die-cast and surrounds the irregularly shaped arm.
  • This invention relates to a centrifugal rpm regulator for internal combustion engines, the regulator being of the type having at least two angular centrifugal weights.
  • the present invention relates to a centrifugal rpm regulator for internal combustion engines having at least two angular centrifugal weights, whose centrifugal masses are, respectively, fixedly connected to one lever arm of a respective angled lever, the opposite lever arm of the angled lever actuating a regulating sleeve, and the lever having a bearing location in the region of the connection of the two lever arms by means of which the centrifugal weights are pivotably mounted on a centrifugal weight carrier.
  • the angular centrifugal weights are either made entirely of cast iron, of a forged steel piece or a section of profile steel, or they are assembled by mechanically fastening a centrifugal mass, essentially composed of two constructional parts, to an angled steel lever.
  • the centrifugal weights used in the abovve-mentioned known regulators require very expensive treatment or expensive manufacturing techniques in order to achieve the desired, predetermined characteristic curve of centrifugal force .vs. rpm because of the required precision of that curve. For example, it is desired that the characteristic curve of centrifugal force vs.
  • centrifugal rpm regulator for internal combustion engines which includes a centrifugal weight carrier and at leasst two angular centrifugal weights.
  • Each centrifugal weight includes l an angled lever having a first arm and a second arm, the second arm having at least a portion thereof of irregular shape, (2) a bearing location in the region of connection of the first arm and the second arm which serves to mount pivotally the respective centrifugal weight to the centrifugal weight carrier, and (3) an angular centrifugal mass fixedly connected to the first arm, which mass surrounds at least that portion of the first arm having the irregular shape.
  • a regulating sleeve is operatively positioned to be actuated by the second arm.
  • the one arm of the angled lever has an irregular shape.
  • operative masses of the centrifugal weights may readily consist of metal which can be diecast and which surrounds this arm of the lever.
  • the one arm of the lever has at least one cavity or bore which is filled with metal of the centrifugal weight mass.
  • an advantageous embodiment of the invention is provided by making the angled lever of steel and hardening it in a region of a pressure surface where it cooperates with the regulator sleeve.
  • an inexpensive arrangement of parts can be achieved by providing that the angled lever is pressed of sintered steel.
  • the material of the centrifugal weight mass consists of a zinc alloy which can be die-cast because, in this way, a short manufacturing period can be achieved, while maintaining the highest possible precision.
  • a stable bearing for the centrifugal weight and a good anchoring of the centrifugal weight mass is achieved, in an advantageous further development of the present invention, in that a portion of the mass of the centrifugal weight surrounds a bearing sleeve serving as a bearing location.
  • the angled lever in a particularly advantageous embodiment, is eccentrically connected to the bearing bushing and the one arm of the lever, which is surrounded by the centrifugal mass, is bent toward the center of mass of the centrifugal mass.
  • the one arm of the angled lever to which the centrifugal mass is fastened is itself fastened separately from the other lever arm in a plane of the center of mass of the centrifugal mass, on the bearing bushing.
  • FIG. 1 is a cross-sectional view through constructional parts of the first exemplary embodiment of a centrifugal rpm regulator according to the present invention.
  • FIG. 2 is'a side elevational view of a corresponding centrifugal weight, associated with a lever of the exemplary embodiment illustrated in FIG. 1.
  • FIG. 3 is a sectional view taken along section line III- III of FIG. 2.
  • FIG. 4 is a cross-sectional view of a centrifugal weight mass and lever which could be used in a second exemplary embodiment of the present invention, this view corresponding to a view taken along section line IVIV of FIG. 3.
  • FIG. 5 is a cross-sectional view similar to that of FIG. 4 for a third exemplary embodiment.
  • a centrifugal rpm regulator for an internal combustion engine has a drive shaft and a preferably square extension 11 which carries thereon a centrifugal weight carrier 12.
  • the weight carrier 12 is held in the illustrated position by a springing disc 13 and a safety ring 14.
  • Fixedly connected to the centrifugal weight carrier 12 are pivotal bearings 15 which accept respective bearing bolts 16 on which two centrifugal weights 17 are pivotably mounted.
  • These centrifugal weights 17 have an angled construction and consist of an angled lever 18 made of steel, of a bearing bushing 19 and of a centrifugal weight mass designated 20, only one lever being shown in detail for the purpose of clarity.
  • the material for the centrifugal mass 20 preferably consists of a zinc alloy material capable of being diecast (see especially FIGS. 2 and 3) which material is applied around a lever arm 21, equipped with sawtooth-like projections, the arm 21 being part of the angled lever 18.
  • a portion of the centrifugal weight mass designated 20a also surrounds the bearing bushing 19 fixedly connected to the angled lever 18 and serves as a bearing location.
  • this lever arm 21 has a cavity 22 embodied as a bore. Because this cavity 22 is filled with the metal of the centrifugal weight mass 20 after the die-casting of the lever arm 21, a very robust, solid connection of the centrifugal weight mass 20 to the angled lever 18 is achieved.
  • the angled lever 18 also has a second lever arm 23 which is preferably hardened in the region of a pressure applying surface 25 which cooperates with a regulating sleeve 24. If lower strength requirements are made with respect to the durability of the angled lever 18, it may be pressed of sintered steel.
  • the regulating sleeve 24, at its end 26 adjacent to the lever arm 23 carries, in known fashion, a thrust bearing 27 and is itself carried in known fashion on a bearing stud 28 rigidly connected to the drive shaft 10.
  • the regulating sleeve 24 is loaded, in a known and therefore not further described fashion, either directly or indirectly, and via intermediate levers, by at least one regulating spring.
  • a second exemplary embodiment of a centrifugal weight 17' includes one lever arm designated 21 which forms part of an angled lever 18 which is eccentrically connected with the bearing bushing 19, is bent toward the middle of the centrifugal weight 17 or toward the center of mass of the centrifugal weight mass 20, in order to achieve a better distri- 5 bution of the material of the centrifugal weight mass 20 around the lever arm 21.
  • a one-sided distribution could cause undesirable stress cracks.
  • lever arm 21" and 23" forming part of an angled lever 18" on the bearing bushing 19 in the third exemplary embodiment, as shown in FIG. 5.
  • One lever arm 21 is fastened in the plane of the center of mass, i.e. in the middle of the centrifugal weight 17" on the bearing bushing 19.
  • the mode of operation of the centrifugal weights l7, l7 and 17 sometimes designated as pendulum centrifugal weights, of the centrifugal rpm regulator according to the invention, is known, and, in order to achieve a characteristic curve of centrifugal force vs. rpm which has a bulge toward the top, the mass of the centrifugal weight mass 20 is very largely concentrated at that end of the lever arm 21, 21' or 21", as the case may be, which is the further away from the bearing bushing 19. In this manner, very good regulation can be achieved at low rpm; yet it is possible to manufacture the rather complicated external shape of the centrifugal weights very precisely using die-casting techniques with the result that a post-production treatment or finishing operation is unnecessary. In turn, this makes possible a very inexpensive mass production which, nevertheless, achieves sufficient precision.
  • a centrifugal rpm regulator for internal combustion engines comprising, in combination:
  • each said centrifugal weight including:
  • an angled lever having a first arm and a second arm, said first arm having at least a portion thereof of irregular shape
  • a regulating sleeve operatively positioned to be actuated by said second arm.
  • centrifugal rpm regulator for internal combustion engines as defined in claim 1, wherein said centrifugal mass is die-cast about said first arm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
US423743A 1972-12-23 1973-12-11 Centrifugal rpm regulator for internal combustion engines Expired - Lifetime US3895537A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2263382A DE2263382C3 (de) 1972-12-23 1972-12-23 Fliehkraftdrehzahlregler fur Brennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3895537A true US3895537A (en) 1975-07-22

Family

ID=5865451

Family Applications (1)

Application Number Title Priority Date Filing Date
US423743A Expired - Lifetime US3895537A (en) 1972-12-23 1973-12-11 Centrifugal rpm regulator for internal combustion engines

Country Status (11)

Country Link
US (1) US3895537A (de)
JP (1) JPS5621894B2 (de)
AT (1) AT330508B (de)
BR (1) BR7309953D0 (de)
CS (1) CS163711B2 (de)
DE (1) DE2263382C3 (de)
ES (1) ES421747A1 (de)
FR (1) FR2211594B1 (de)
GB (1) GB1455698A (de)
IT (1) IT1000876B (de)
SE (1) SE387708B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2916869A1 (de) * 1979-04-26 1980-11-06 Bosch Gmbh Robert Fliehkraftdrehzahlregler fuer brennkraftmaschinen
DE4016575A1 (de) * 1990-05-23 1991-11-28 Kloeckner Humboldt Deutz Ag Fliehgewicht-halter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US278387A (en) * 1883-05-29 Ball-governor for steam-engines
US2856479A (en) * 1957-01-07 1958-10-14 Ford Motor Co Inhibitor switch for automatic transmissions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US278387A (en) * 1883-05-29 Ball-governor for steam-engines
US2856479A (en) * 1957-01-07 1958-10-14 Ford Motor Co Inhibitor switch for automatic transmissions

Also Published As

Publication number Publication date
FR2211594B1 (de) 1976-10-08
CS163711B2 (de) 1975-11-07
DE2263382C3 (de) 1978-07-20
ATA1075873A (de) 1975-09-15
GB1455698A (en) 1976-11-17
IT1000876B (it) 1976-04-10
FR2211594A1 (de) 1974-07-19
JPS4989057A (de) 1974-08-26
DE2263382A1 (de) 1974-06-27
DE2263382B2 (de) 1977-12-01
ES421747A1 (es) 1976-04-01
AT330508B (de) 1976-07-12
BR7309953D0 (pt) 1974-08-29
SE387708B (sv) 1976-09-13
JPS5621894B2 (de) 1981-05-22

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