US3532082A - Minimum-maximum governor with midrange regulation - Google Patents

Minimum-maximum governor with midrange regulation Download PDF

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Publication number
US3532082A
US3532082A US736306A US3532082DA US3532082A US 3532082 A US3532082 A US 3532082A US 736306 A US736306 A US 736306A US 3532082D A US3532082D A US 3532082DA US 3532082 A US3532082 A US 3532082A
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US
United States
Prior art keywords
spring
governor
midrange
engine
regulation
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.)
Expired - Lifetime
Application number
US736306A
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English (en)
Inventor
Jerry A Clouse
Marvin A Gates
John H Parks
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Application granted granted Critical
Publication of US3532082A publication Critical patent/US3532082A/en
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.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
    • G05D13/08—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover without auxiliary power
    • G05D13/10—Centrifugal governors with fly-weights

Definitions

  • the present invention provides means in the form of a third governor spring which is effective after the minimum range spring controlling low speeds has obtained full compression. It is at this time that unduly rapid acceleration often occurs.
  • the third spring of the present invention then becomes operative, providing high regulation governing, to prevent such acceleration.
  • FIG. 1 is a central vertical section through a governor embodying the present invention.
  • FIG. 2 is a perspective view which shows a spring which is employed for midrange regulation.
  • the governor shown is contained in the housing secured to one end of a fuel pump housing, a portion of which is shown at 12.
  • Conventional flyweights 14 are pivoted, as at 15, to a rotatable carrier 16.
  • Gear teeth 17 are formed on one of the carriers and mesh with the gear 18 which is engine driven in this case by a camshaft, a portion of which is shown at 19 in the pump housing.
  • Outward movement of the flyweights caused by engine speed and inward movement results from varying the force of the governor springs, results in adjustment of a fuel feed rack in the pump housing shown at 20 and this rack imparts angular adjustment through a gear 21 to a plunger 22 of one of the several engine fuel pumps, all in a conventional manner.
  • the transmission of motion from the flyweights to the fuel rack 20 is accomplished by a double acting hydraulic servomechanism generally indicated at 24 and explained in detail in Parks & Wellwood Pat. No. 3,145,624. It will suffice for an understanding of the present invention to know that the governor flyweights move and are adjusted by a reaction member 26 on a valve spool 27 which controls flow of fluid under pressure through a passage 28 to and from a chamber 29 which is effective through a piston 30 to adjust the fuel rack.
  • a control lever 32 actuated through suitable linkage from an accelerator pedal may be moved in a counterclockwise direction and has a bifurcated end bearing against the end of a collar 34 to move it toward the right, as viewed in the drawing, for com pressing the springs of the governor spring assembly. It is slidable on a bearing 36 which is pressed into a suitable bore in the end of the housing 10.
  • the spring assembly is shown as in shutdown condition and upon starting of the engine at low idle or slightly greater speed setting, the flyweights will swing outwardly and urge the reaction member 26 against a seat 38 of a low speed spring 40 seating at its opposite end against the seat 42 of the heavier high speed range spring 44.
  • This spring has a seat 46 at its opposite end slidable on a sleeve 48'and has an assembled preload.
  • the sleeve 46 also acts as a seat for a midrange governor spring 50 which has an opposite seat formed on the collar 34.
  • One form which the midrange spring 50 may assume is that ofa finger spring such as that illustrated in H6. 2, though other springs having a. comparable rate and 5 force may of course be used.
  • accelerator is actuated to swing lever 32 counterclockwise with no deflection of the high speed spring due to its preload and only slight deflection of the stiff midrange spring so that motion will be transmitted through collar 34, spring seat 46 and sleeve 48 to compress spring 40.
  • the end of the sleeve abuts spring seat 38 so that the spring is no longer functioning. If at this point further counterclockwise motion is imparted to lever 32 it would normally move the rack directly and result in rapid acceleration until the: engine speed reached a point where the tlyweight force equalled the high speed preload force at which time normal governing would occur.
  • the midrange spring 50 prevents this acceleration.
  • a governor comprising separate spring means for regulating the speed of the engine at low, intermediate and high speeds, respectively, first, second and third serially arranged spring means, said spring means adapted to be operatively connected to a fuel feed rack to regulate movement of said fuel feed rack and adapted to urge said fuel feed rack in a first direction, speed responsive means connected to said serially arranged springs to urge them in a second direction in opposition to movement in said first direction, said first spring means having a predetermined low spring rate to regulate movement of said fuel feed rack at predetermined low speeds to prevent excessive acceleration of said engine at said low speeds, said third spring means having a predetermined intermediate spring rate to regulate movement of said fuel feed rack at said predetermined low speeds and at predetermined intermediate speeds to prevent excessive acceleration of said engine at said low speeds and said intermediate speeds, said first spring means ineffective to regulate movement of said fuel feed rack at speeds above said predetermined low speeds, and said second spring means having a predetermined high spring rate to regulate movement of said fuel feed rack at predetermined high

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
US736306A 1968-06-12 1968-06-12 Minimum-maximum governor with midrange regulation Expired - Lifetime US3532082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73630668A 1968-06-12 1968-06-12

Publications (1)

Publication Number Publication Date
US3532082A true US3532082A (en) 1970-10-06

Family

ID=24959369

Family Applications (1)

Application Number Title Priority Date Filing Date
US736306A Expired - Lifetime US3532082A (en) 1968-06-12 1968-06-12 Minimum-maximum governor with midrange regulation

Country Status (6)

Country Link
US (1) US3532082A (fr)
JP (1) JPS4844714B1 (fr)
BE (1) BE733111A (fr)
DE (1) DE1929483C3 (fr)
FR (1) FR2010724A1 (fr)
GB (1) GB1264036A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675731A (en) * 1969-12-01 1972-07-11 Walter Stopera Vehicle speed controlled throttle governor
US3777730A (en) * 1972-03-20 1973-12-11 Caterpillar Tractor Co Fuel limiting device
US4109628A (en) * 1976-11-08 1978-08-29 Caterpillar Tractor Co. Adjustable regulation governor
US4341126A (en) * 1977-02-25 1982-07-27 Thomas Hubert E Variable amplitude vibratory apparatus
US4348912A (en) * 1979-08-21 1982-09-14 Thomas Hubert E Variable amplitude vibrator apparatus
US5291086A (en) * 1991-06-04 1994-03-01 Eureka Technologies Ltd. Electrical actuator for valve or other device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414222A1 (fr) * 1978-01-04 1979-08-03 Citroen Sa Perfectionnements apportes aux regulateurs a masselottes centrifuges

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675731A (en) * 1969-12-01 1972-07-11 Walter Stopera Vehicle speed controlled throttle governor
US3777730A (en) * 1972-03-20 1973-12-11 Caterpillar Tractor Co Fuel limiting device
US4109628A (en) * 1976-11-08 1978-08-29 Caterpillar Tractor Co. Adjustable regulation governor
US4341126A (en) * 1977-02-25 1982-07-27 Thomas Hubert E Variable amplitude vibratory apparatus
US4348912A (en) * 1979-08-21 1982-09-14 Thomas Hubert E Variable amplitude vibrator apparatus
US5291086A (en) * 1991-06-04 1994-03-01 Eureka Technologies Ltd. Electrical actuator for valve or other device

Also Published As

Publication number Publication date
DE1929483A1 (de) 1970-01-02
BE733111A (fr) 1969-11-14
FR2010724A1 (fr) 1970-02-20
DE1929483B2 (de) 1978-07-20
DE1929483C3 (de) 1979-03-22
GB1264036A (en) 1972-02-16
JPS4844714B1 (fr) 1973-12-26

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Legal Events

Date Code Title Description
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