US2567495A - Hydraulic governor - Google Patents

Hydraulic governor Download PDF

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Publication number
US2567495A
US2567495A US22049A US2204948A US2567495A US 2567495 A US2567495 A US 2567495A US 22049 A US22049 A US 22049A US 2204948 A US2204948 A US 2204948A US 2567495 A US2567495 A US 2567495A
Authority
US
United States
Prior art keywords
valve
chamber
pump
spring
control valve
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
US22049A
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English (en)
Inventor
Nicolls Wilfrid Edward Walter
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.)
CAV Ltd
Original Assignee
CAV Ltd
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 CAV Ltd filed Critical CAV Ltd
Application granted granted Critical
Publication of US2567495A publication Critical patent/US2567495A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • F02D1/12—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic
    • F02D1/122—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic control impulse depending only on engine speed
    • F02D1/127—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic control impulse depending only on engine speed using the pressure developed in a pump
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/02—Controlling by changing the air or fuel supply
    • F02D2700/0269—Controlling by changing the air or fuel supply for air compressing engines with compression ignition
    • F02D2700/0282—Control of fuel supply
    • F02D2700/0284—Control of fuel supply by acting on the fuel pump control element
    • F02D2700/0289—Control of fuel supply by acting on the fuel pump control element depending on the pressure of a gaseous or liquid medium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S60/00—Power plants
    • Y10S60/907—Working member positioned against counterforce by constantly applied motive fluid

Definitions

  • the invention comprises the combination of a pump adapted to be driven by the engine, a circulatory system associated with the said pump, a movable member responsive to the fluid pressure in the system for actuating the regulating means of the fuel pump, an adjustable spring loaded control valve, and stabilising means including a dash pot and spring for imparting movement to the control valve in response to movements of the said movable member.
  • a hollow body or casing indicated generally at l in which are mounted a pair of gear wheels 2 forming a gear pump, the latter being adapted to be driven by the engine.
  • a fluid inlet passage 3 At one side of the pump is provided a fluid inlet passage 3, and at the other side is provided a delivery passage 4 leading to one end of a cylindrical chamber 5 in the body part or casing.
  • a port 6 At the opposite end of the chamber 5 is a port 6 communicating with a chamber 1 herein termed the control valve chamber.
  • a passage 8 leads from the chamber 1 to a valve chamber 9 having a passage lll communicating with the passage 4, the passage being provided with a seating H for a constant pressure valve l2 loaded by a spring [3.
  • a return passage I4 Between the pump inlet passage 3 and the control chamber 1 is provided a return passage I4, the communication between this passage and the said chamber 1 being effected by the control valve I5.
  • the various passages referred to above constitute the circulatory system around which fluid can be caused to flow by the pump.
  • a piston In the cylindrical chamber is contained a piston it which is loaded by a spring I! on the side remote from the passage 4 between the delivery side of the pump and the said chamber, and a rod I8 extending from the piston through the closed end of the chamber is connected to a lever IS.
  • the lever is pivotally supported at one end 20, and at the opposite end 2! is connected to the regulating member 22 of the fuel pump, this member being, for example a slidable bar by 2 movement of which the output of the fuel pump can be varied in any convenient and known manner.
  • the control valve chamber 1 communicates with the return passage i l by way of a cylindrical bor in which is slidable the control valve [5.
  • This valve is of hollow cylindrical form, and around its exterior is formed a circumferential groove 23 by which the adjacent chamber 1 can be put into restricted communication with the return passage 14.
  • a hollow slidable plunger 25 having its closed outer end in contact with the lever l3 above mentioned, and between the plunger 25 and control valve 15 is placed a spring 2'llfor transmitting motion from the lever l9 to the said valve.
  • the valve I5 is loaded at its other side by a spring 23 located within the said control valve chamber l. Also within the valve I5 is formed a restricted orifice 29 whereby the space between the plunger 25 and the control valve is in communication with the control valve chamber l and is thus filled with fiuid.
  • the arrangement is such that the piston It. which actuates the regulating member 22 of the fuel pump is subject on one side to the pressure of the liquid at the discharge side of the circulating pump which is determined by the loading of the aforementioned constant pressure valve l2, and on the other side to the spring I1 and to the pressure of the fluid in the control valve chamber 1. According to the relative pressures exerted on the piston by its spring and the fluid, so the piston is caused to move in one direction or the other for moving the regulating member of the fuel pump. Under normal operating conditions the valve I2 is opened, by the pressure of the liquid delivered by the circulating pump 2, to an extent sufiicient to equalise the pressures acting on the piston l6. Consequently the regulating member 22 of the fuel pump is stationary.
  • the lever (B then imparts movement to the plunger 25 and this transmits movement to the control valve l5 through the associated liquid and spring 21 in the direction for increasing the flow from the valve chamber 1 to the return passage 14.
  • the amount of movement of the valve I5 depends on the rate of movement of the piston 25 and on the rate at which liquid can flow through the restricted orifice 29 in the valve from the space between the plunger 25 and valve to the valve chamber 1.
  • a hydraulic governor comprising in combination a liquid circulating pump, a delivery passage communicating with the discharge side of said pump, means 'forming with 'a part of said delivery passage a circulatory path leading from the discharge side of said pump to the inlet side thereof, a spring loaded pressure valve arranged in said path at -a position between said delivery passage and the inlet side of said pump so that said valve opens in response to the pressure of liquid delivered by said pump, a spring loaded stabilising valve arranged in said path at a position between said pressure valve and the inlet side of said pump, a chamber arranged out of said path and “communicating at opposite ends respectively with said delivery passage and the part of said path between said pressurevalve and said stabilising valve, a spring loaded pressure 4 responsive member arranged in said chamber with its opposite sides exposed respectively to the liquid pressures in opposite ends of said chamber, a regulating member operable by said pressure responsive member for causing actuation of said stabilising valve and a dash pot device for controlling the rate of movement of the stabilising valve.
  • plunger situated in said bore adjacent to one end of said cylindrical member, and operable by said regulating member, a spring located between said plunger and the adjacent end of said cylindrical member, and another spring acting on the .other end of said cylindrical member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Fuel-Injection Apparatus (AREA)
US22049A 1947-05-07 1948-04-20 Hydraulic governor Expired - Lifetime US2567495A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12320/47A GB626549A (en) 1947-05-07 1947-05-07 Improvements relating to hydraulic governors

Publications (1)

Publication Number Publication Date
US2567495A true US2567495A (en) 1951-09-11

Family

ID=10002344

Family Applications (1)

Application Number Title Priority Date Filing Date
US22049A Expired - Lifetime US2567495A (en) 1947-05-07 1948-04-20 Hydraulic governor

Country Status (4)

Country Link
US (1) US2567495A (de)
CH (1) CH265620A (de)
DE (1) DE826666C (de)
GB (1) GB626549A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756982A (en) * 1950-03-28 1956-07-31 Sebem S A Hydraulic governor
US2905457A (en) * 1956-04-05 1959-09-22 Bryce Berger Ltd Hydraulic speed governing mechanism for prime movers

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1000633B (de) * 1951-05-11 1957-01-10 Fiat Spa Hydraulischer Regler
DE1040317B (de) * 1952-07-28 1958-10-02 Napier & Son Ltd Hydraulische Regelvorrichtung fuer Einspritzbrennkraftmaschinen
DE1055290B (de) * 1954-04-26 1959-04-16 Napier & Son Ltd Hydraulische Regelvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB177664A (en) * 1921-02-15 1922-04-06 Jens Orten Boving An improved hydraulic governor for engines, turbines and the like
GB332008A (en) * 1929-05-31 1930-07-17 Wilhelm Schuermann Improvements in hydraulic speed regulators
US1961842A (en) * 1931-12-12 1934-06-05 Internat Engineering Corp Control mechanism
US2255439A (en) * 1940-10-10 1941-09-09 Westinghouse Electric & Mfg Co Governing apparatus
US2325009A (en) * 1941-03-26 1943-07-20 Kalin Albert Governor
US2378558A (en) * 1942-07-04 1945-06-19 Kalin Albert Governor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB177664A (en) * 1921-02-15 1922-04-06 Jens Orten Boving An improved hydraulic governor for engines, turbines and the like
GB332008A (en) * 1929-05-31 1930-07-17 Wilhelm Schuermann Improvements in hydraulic speed regulators
US1961842A (en) * 1931-12-12 1934-06-05 Internat Engineering Corp Control mechanism
US2255439A (en) * 1940-10-10 1941-09-09 Westinghouse Electric & Mfg Co Governing apparatus
US2325009A (en) * 1941-03-26 1943-07-20 Kalin Albert Governor
US2378558A (en) * 1942-07-04 1945-06-19 Kalin Albert Governor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756982A (en) * 1950-03-28 1956-07-31 Sebem S A Hydraulic governor
US2905457A (en) * 1956-04-05 1959-09-22 Bryce Berger Ltd Hydraulic speed governing mechanism for prime movers

Also Published As

Publication number Publication date
GB626549A (en) 1949-07-18
CH265620A (de) 1949-12-15
DE826666C (de) 1952-01-03

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