US2711894A - Hydraulic pump and motor type governors - Google Patents

Hydraulic pump and motor type governors Download PDF

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Publication number
US2711894A
US2711894A US33988453A US2711894A US 2711894 A US2711894 A US 2711894A US 33988453 A US33988453 A US 33988453A US 2711894 A US2711894 A US 2711894A
Authority
US
United States
Prior art keywords
throttle
pump
bore
cam
liquid
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
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English (en)
Inventor
Basil Edward Knight
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 US2711894A publication Critical patent/US2711894A/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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased
    • Y10T137/7925—Piston-type valves

Definitions

  • the object of the invention is to enable the governing action to be regulated in a simple and convenient manner.
  • a governing means in accordance with the invention comprises the combination of a cylindrical and springloaded throttle which is slidable and rotatable in a bore for controlling a port in the bore, and an angularly movable cam associated with the throttle, angular movement of the throttle being effected either by manual actuation of the cam or by axial movement of the throttle relatively to the cam in response to the pressure of liquid acting on the throttle.
  • Figure l is a sectional side elevation illustrating an application of the invention to a liquid fuel injection pump for an internal combustion engine.
  • the pump to which the invention is applied as shown in the drawing is of a known kind and includes a plurality of reciprocatory plungers (not shown) contained in a body part a. Motion is imparted to the plungers by a cam shaft driven by the engine, and the output of the pump is regulated by a slidable rod b which serves to impart angular movements to the plungers for varying their relation to spill ports in the pump barrels.
  • the governor forming the subject of the invention is required to actuate the rod b when a given engine speed is reached for reducing the pump output.
  • a governor housing 0 which includes a chamber d, this being filled with liquid fuel supplied by a passage e connected to the pump-supply pipe.
  • a gear pump g which is driven by a shaft 11, which may be the cam shaft of the pump, or a shaft driven by the cam shaft.
  • Liquid is supplied to the pump from the chamber d through a passage 1, and is delivered by the pump to the said bore f along a passage i at a pressure related to the speed of the pump.
  • the liquid is returned from the bore 1 to the chamber d through a port j ( Figures l and 3).
  • a spring loaded relief valve k is provided between the passage i and the chamber d.
  • a given setting of the cam determines the speed at which the bar b will be actuated for reducing the pump output.
  • the pressure at which liquid is supplied by the pump g to the left hand end of the bore 7 increases, and when the pressure is sulficient to move the throttle against the action of the spring n, this movement results in the desired actuation of the control bar b for reducing rate of output of the pump.
  • the movement of the throttle arm 2 along the cam results in increased restriction or closing of the port j.
  • the throttle is returned by the spring 11, and the bar b is thereby moved in the direction for increasing the rate of output of the pump.
  • the invention is primarily intended for use in controlling the output of a variable delivery liquid fuel injection pump, it is not restricted to such use, as it may be applied to other uses where it is required to regulate the rate of flow of a liquid along a passage under manual control and in response to the pressure of the liquid.
  • a hydraulic governor comprising in combination a body part having formed therein a bore provided with a liquid outlet port, a cylindrical and spring-loaded throttle slidable and angularly movable in said bore for varying the efiective area of said port, means for supplying liquid under pressure to said bore at one end of said throttle, an angularly adjustable cam, and means co-operating with said cam for imparting angular movement to said throttle in response to both sliding movement of said throttle and angular adjusting movement of said cam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
US33988453 1952-03-07 1953-03-02 Hydraulic pump and motor type governors Expired - Lifetime US2711894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB596752A GB718396A (en) 1952-03-07 1952-03-07 Hydraulic governors for controlling fuel injection pumps for internal combustion engines or other purposes

Publications (1)

Publication Number Publication Date
US2711894A true US2711894A (en) 1955-06-28

Family

ID=9805977

Family Applications (1)

Application Number Title Priority Date Filing Date
US33988453 Expired - Lifetime US2711894A (en) 1952-03-07 1953-03-02 Hydraulic pump and motor type governors

Country Status (5)

Country Link
US (1) US2711894A (de)
CH (1) CH311922A (de)
DE (1) DE1019178B (de)
FR (1) FR1072270A (de)
GB (1) GB718396A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052165B (de) * 1956-05-12 1959-03-05 Wilhelm Hofacker Vorrichtung zum Regeln der Einspritzmenge von Brennstoffeinspritzpumpen
US3344797A (en) * 1965-05-10 1967-10-03 Soya Rederi Ab Fluid motor regulating mechanism having friction compensator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354875A (en) * 1964-04-15 1967-11-28 Honda Gijutsu Kenkyusho Kk Apparatus for adjustment of fuel injection amount in internal combustion engines
GB1550466A (en) * 1976-07-02 1979-08-15 Lucas Industries Ltd Fuel pump assembly
DE3713288A1 (de) * 1986-07-25 1988-02-04 Man Nutzfahrzeuge Gmbh Steuereinrichtung fuer die verstellung des einspritzzeitpunktes und/oder der foerdermenge einer kraftstoffeinspritzpumpe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB248144A (en) * 1925-01-17 1926-03-04 Thomas Blackwood Murray Improvements in connection with the braking of motor and like vehicles
GB463310A (en) * 1935-09-24 1937-03-24 Harry Hunter Improvements in or relating to speed governors for internal combustion engines
GB475693A (en) * 1935-11-08 1937-11-24 Saurer Ag Adolph Improvements in and relating to speed regulating devices for power machines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR998960A (fr) * 1948-11-06 1952-01-25 Régulateur hydraulique pour moteurs à combustion interne
DE829995C (de) * 1949-01-01 1952-01-31 Kienzle Apparate Gmbh Vorrichtung zum Einregeln des Betriebszustandes von Kraftfahrzeugmotoren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB248144A (en) * 1925-01-17 1926-03-04 Thomas Blackwood Murray Improvements in connection with the braking of motor and like vehicles
GB463310A (en) * 1935-09-24 1937-03-24 Harry Hunter Improvements in or relating to speed governors for internal combustion engines
GB475693A (en) * 1935-11-08 1937-11-24 Saurer Ag Adolph Improvements in and relating to speed regulating devices for power machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052165B (de) * 1956-05-12 1959-03-05 Wilhelm Hofacker Vorrichtung zum Regeln der Einspritzmenge von Brennstoffeinspritzpumpen
US3344797A (en) * 1965-05-10 1967-10-03 Soya Rederi Ab Fluid motor regulating mechanism having friction compensator

Also Published As

Publication number Publication date
FR1072270A (fr) 1954-09-10
DE1019178B (de) 1957-11-07
GB718396A (en) 1954-11-10
CH311922A (de) 1955-12-15

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