US3915140A - Governor with stabilizing means - Google Patents

Governor with stabilizing means Download PDF

Info

Publication number
US3915140A
US3915140A US452822A US45282274A US3915140A US 3915140 A US3915140 A US 3915140A US 452822 A US452822 A US 452822A US 45282274 A US45282274 A US 45282274A US 3915140 A US3915140 A US 3915140A
Authority
US
United States
Prior art keywords
spring
governor
piston
engine
shaft
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
US452822A
Other languages
English (en)
Inventor
John H Parks
Robert H Miller
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
Priority to US452822A priority Critical patent/US3915140A/en
Priority to JP49129665A priority patent/JPS5833383B2/ja
Priority to BR10298/74A priority patent/BR7410298A/pt
Priority to CA218,174A priority patent/CA1027439A/en
Priority to GB1056175A priority patent/GB1450364A/en
Priority to BE154520A priority patent/BE826907A/xx
Application granted granted Critical
Publication of US3915140A publication Critical patent/US3915140A/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

Links

Images

Classifications

    • 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
    • F02D1/045—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 characterised by arrangement of springs or weights

Definitions

  • a governor mechanism of the type having interacting flyweights and a governor main spring for regulating engine speed includes damping means comprising hydraulically damped piston means interacting with a compression-extension spring member to temporarily, effectively change the spring rate of the main governor spring, and thereby substantially eliminate governor speed droop while maintaining governor stability.
  • This invention relates to means for preventing erratic or surging governor operation of an engine.
  • this invention relates to governor damping means for preventing surging or erratic operation of the governorcontrolled engine.
  • the invention provides damping means for governors of the type having interacting flyweights and a main governor spring for regulating the position of a fuel control member which controls the supply of fuel to the engine and thus regulates the speed thereof.
  • the damping means of this invention include hydraulicallydamped piston means interacting with a compressionextension member to increase the spring rate of the main governor spring during transitory adjustments thereof to engine load changes.
  • a lower-rate governor spring may be employed, and governor speed droop with increased engine load is substantially eliminated without impairing governor stability. Substantially isochronous governing of the engine within minimum tolerances is thereby achieved.
  • FIGURE is a sectional view of a governor mechanism including the governor damping means of this invention.
  • a governor mechanism generally indicated at 10 includes a pair of flyweights 1 1 and a main governor spring 12 which interact to control the movement of a fuel pump rack bar 13 through a valve member 14 and a servo-mechanism 16.
  • the fuel pump rack bar 13 controls the supply of fuel to an associated engine (not shown) according to its position so that a constant engine speed is maintained.
  • Governor spring 12 is disposed between a forward spring seat 17 secured to the valve member 14, and a rearward spring seat 18 slideably mounted on a guide 19.
  • Main governor spring 12 is adjusted to provide the desired engine speed by adjusting the position of a bifurcated lever 21, one arm 22 of which is shown bearing against rearward spring seat 18 to apply the necessary force to the main governor spring.
  • the interaction of the main governor spring 12 and the flyweights 11 control the position of the fuel pump rack bar 13 through the servo-mechanism 16 in a conventional manner to establish engine speed.
  • the conventional governor is susceptible to surging or overcontrolled adjustment of the rack bar during changes in engine load, which thereby results in erratic engine operation.
  • the invention provides damping means generally indicated at 23 for effectively changing the spring rate of main governor spring 12 during governor position changes.
  • the damping means 23 include piston means 24 slideably engaged in a bore 25 of the guide 19, and a compression-extension member in the form of a damping spring 26 secured at opposite ends thereof to the piston 24 and a shoulder 27 of forward spring seat 17, respectively.
  • Piston means 24 is slidable on a shaft 28 which functions in a conventional manner as a governor load control by means of a flange 29 engaging a full load stop 30 and a second flange 31 engaging a shoulder 32 of rearward spring seat 18.
  • Bore 25 of guide 19 includes chambers 33, 34 formed by the walls of the bore and piston means 24.
  • Guide 19 is provided with an orifice 35 communicating chamber 33 with a reservoir 36 having a source of hydraulic fluid such as engine oil which acts as a damping fluid for the action of the piston.
  • Oil reservoir 36 at atmospheric pressure provides a continuous fluid supply for chamber 33.
  • Orifice 35 provides a continuous controlled fluid flow between chamber 33 and reservoir 36 as dictated by the piston means motion.
  • the damping of the piston is caused by the lubricnt being forced through the orifice between piston 24 and bore 25.
  • the lever 21 To operate the engine at a predetermined speed, the lever 21 is positioned to accordingly preload the governor spring 12. As an increased load is placed on the engine, the forces acting on flyweights l 1 decrease, allowing spring 12 to force forward spring seat 17 to the right to a position as illustrated in the figure, thereby actuating servo-mechanism 16 through the valve member 14 and positioning the rack bar 13 to increase the supply of fuel to the engine, all in a conventional manner.
  • flyweights 11 When engine load is suddenly decreased, flyweights 11 are moved radially outwardly by centrifugal forces generated by increased engine speed. This outward movement of flyweights l 1 moves forward spring seat 17 leftwardly from the position as shown in the Figure to compress main governor spring 12, and reposition rack bar 13 through servo-mechanism 16 to reduce the supply of fuel to the engine.
  • the leftward movement of the forward spring seat 17 simultaneously compresses the damping spring seat 26 against the piston 23. Since the piston 23 is damped by fluid in the chamber 33, however, the piston resists the urging of the damping spring 26, and the spring 26 in additive combination with the governor spring 12 thereby temporarily functions as a high-rate spring.
  • the damping spring 26 slowly urges the piston 24 to a position where spring 26 is in a neutral or equilibrium position.
  • the invention provides improved means for preventing erratic engine operation and for maintaining a constant engine speed within minimum tolerances. While the invention has been described in terms of a specific embodiment, it is apparent that equivalent modifications and embodiments are contemplated by the invention, and no limitations are intended except as specifically pointed out in the appended claims.
  • an engine governor for maintaining a desired engine speed and having a fuel control member for regulating the flow of fuel to an engine, flyweight means for controlling the movement of said fuel control member to position said fuel control member to increase the flow of fuel in response to an increase in engine load, main spring means mounted adjacent to said flyweight means for assisting movement of said fuel control member in a direction to increase flow of fuel, said main spring means having a spring rate, wherein said main spring means comprises a main spring, said governor including a spring seat for said main spring, said flyweight means comprising flyweights for compressing said main spring by said spring seat as engine speed increases, and means for temporarily, effectively changing said spring rate of said main spring means when engine load is suddenly increased or decreased, and thereby maintaining governor stability, said means for changing comprising a damping spring and a hydraulically damped piston for providing a force which subtracts from the force of the main spring during a decrease in engine speed and adds to the force of the main spring during an increase in engine speed, further including a hydraulically damped piston reciprocable within said bore,
  • stop means comprises a full load stop positioned so as to contact one of said flange stops when said piston and shaft move in a first direction.
  • stop means further comprise a shoulder on said spring seat positioned so as to contact the other of said flange stops when said pistonand shaft move in a second direction, opposite to said first direction.

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)
US452822A 1974-03-20 1974-03-20 Governor with stabilizing means Expired - Lifetime US3915140A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US452822A US3915140A (en) 1974-03-20 1974-03-20 Governor with stabilizing means
JP49129665A JPS5833383B2 (ja) 1974-03-20 1974-11-12 アンテイカシユダンツキ チヨウソクキ
BR10298/74A BR7410298A (pt) 1974-03-20 1974-12-09 Regulador de velocidade
CA218,174A CA1027439A (en) 1974-03-20 1975-01-20 Governor with stabilizing means
GB1056175A GB1450364A (en) 1974-03-20 1975-03-13 Governor with stabilizing means
BE154520A BE826907A (fr) 1974-03-20 1975-03-20 Regulateur a moyens de stabilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US452822A US3915140A (en) 1974-03-20 1974-03-20 Governor with stabilizing means

Publications (1)

Publication Number Publication Date
US3915140A true US3915140A (en) 1975-10-28

Family

ID=23798084

Family Applications (1)

Application Number Title Priority Date Filing Date
US452822A Expired - Lifetime US3915140A (en) 1974-03-20 1974-03-20 Governor with stabilizing means

Country Status (6)

Country Link
US (1) US3915140A (OSRAM)
JP (1) JPS5833383B2 (OSRAM)
BE (1) BE826907A (OSRAM)
BR (1) BR7410298A (OSRAM)
CA (1) CA1027439A (OSRAM)
GB (1) GB1450364A (OSRAM)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977343A (en) * 1974-03-19 1976-08-31 Sigma Diesel Fuel injection pump regulating device
US4041920A (en) * 1974-07-26 1977-08-16 C.A.V. Limited Fuel injection pumping apparatus
WO1981002763A1 (en) * 1980-03-28 1981-10-01 Caterpillar Tractor Co Servo boosted governor control for engines
US4355610A (en) * 1980-03-28 1982-10-26 Caterpillar Tractor Co. Servo boosted governor control for engines
US4785778A (en) * 1980-09-15 1988-11-22 Caterpillar Inc. Engine governor with dual regulation
CN106968813A (zh) * 2017-02-28 2017-07-21 南京威孚金宁有限公司 一种ve分配泵调速系统及其调速方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313632C2 (de) * 1983-04-15 1986-01-30 Daimler-Benz Ag, 7000 Stuttgart Leerlauf-Enddrehzahlregler für Einspritzpumpen an Brennkraftmaschinen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656174A (en) * 1950-11-13 1953-10-20 Standard Oil Dev Co Governor for prime mover with compressed air control for adjusting it to a wide range of speeds
US2868184A (en) * 1957-04-22 1959-01-13 Curtiss Wright Corp Engine load limiting controls
US2984112A (en) * 1959-04-13 1961-05-16 Caterpillar Tractor Co Engine governor with stabilizing means
US3777730A (en) * 1972-03-20 1973-12-11 Caterpillar Tractor Co Fuel limiting device
US3795233A (en) * 1972-05-19 1974-03-05 Caterpillar Tractor Co Fuel-air ratio control for supercharged engines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656174A (en) * 1950-11-13 1953-10-20 Standard Oil Dev Co Governor for prime mover with compressed air control for adjusting it to a wide range of speeds
US2868184A (en) * 1957-04-22 1959-01-13 Curtiss Wright Corp Engine load limiting controls
US2984112A (en) * 1959-04-13 1961-05-16 Caterpillar Tractor Co Engine governor with stabilizing means
US3777730A (en) * 1972-03-20 1973-12-11 Caterpillar Tractor Co Fuel limiting device
US3795233A (en) * 1972-05-19 1974-03-05 Caterpillar Tractor Co Fuel-air ratio control for supercharged engines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977343A (en) * 1974-03-19 1976-08-31 Sigma Diesel Fuel injection pump regulating device
US4041920A (en) * 1974-07-26 1977-08-16 C.A.V. Limited Fuel injection pumping apparatus
WO1981002763A1 (en) * 1980-03-28 1981-10-01 Caterpillar Tractor Co Servo boosted governor control for engines
US4355610A (en) * 1980-03-28 1982-10-26 Caterpillar Tractor Co. Servo boosted governor control for engines
US4785778A (en) * 1980-09-15 1988-11-22 Caterpillar Inc. Engine governor with dual regulation
CN106968813A (zh) * 2017-02-28 2017-07-21 南京威孚金宁有限公司 一种ve分配泵调速系统及其调速方法

Also Published As

Publication number Publication date
JPS50125127A (OSRAM) 1975-10-01
BE826907A (fr) 1975-09-22
JPS5833383B2 (ja) 1983-07-19
GB1450364A (en) 1976-09-22
BR7410298A (pt) 1976-06-29
CA1027439A (en) 1978-03-07

Similar Documents

Publication Publication Date Title
US3577968A (en) Centrifugal r.p.m. regulator for internal combustion engines
EP0182788B1 (en) Hydrostatic vehicle control
US3884206A (en) Centrifugal rpm regulator for internal combustion engines
DE2326083C2 (de) Einrichtung zur Steuerung des Kraftstoff-Luft-Verhältnisses für eine aufgeladene Brennkraftmaschine
US3830211A (en) Centrifugal governor for controlling the rpm of injection type internal combustion engines
US3915140A (en) Governor with stabilizing means
US4519352A (en) Controlling device for a fuel-quantity adjusting member of a fuel injection pump
US3818883A (en) Isochronous governor
GB2033474A (en) Control of fuel injection pumps for internal combustion engines
US3742925A (en) Timing mechanism for engines
US5014667A (en) Electro-hydraulic control system for governors
US4567870A (en) Governor system
US3532082A (en) Minimum-maximum governor with midrange regulation
US4615317A (en) RPM governor for fuel injection pumps
US4785778A (en) Engine governor with dual regulation
EP0029019B1 (de) Regelanlage für Brennkraftmaschinen
US3499426A (en) Maximum-minimum governor device
US3842815A (en) Centrifugal governor for controlling the rpm of injection type internal combustion engines
US4150650A (en) Internal-combustion engine governor with means to prevent unnecessary changes in engine speed due to inertia or gravity
US2379304A (en) Governor
US4252090A (en) Mechanical engine governor with pressure responsive minimum droop limiting speed control
US3973542A (en) Liquid fuel injection pumping apparatus
US3073329A (en) Isochronous governor
US3902470A (en) Fuel injection pumping apparatus
US2466438A (en) Governor

Legal Events

Date Code Title Description
AS Assignment

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

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