GB1207979A - Improvements in hydraulic regulators, such as hydraulic speed governors - Google Patents

Improvements in hydraulic regulators, such as hydraulic speed governors

Info

Publication number
GB1207979A
GB1207979A GB59016/67A GB5901667A GB1207979A GB 1207979 A GB1207979 A GB 1207979A GB 59016/67 A GB59016/67 A GB 59016/67A GB 5901667 A GB5901667 A GB 5901667A GB 1207979 A GB1207979 A GB 1207979A
Authority
GB
United Kingdom
Prior art keywords
piston
chamber
passageway
pressure
passage
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
Application number
GB59016/67A
Inventor
Pierre Bessiere
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1207979A publication Critical patent/GB1207979A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • F02D2700/0292—Control of fuel supply by acting on the fuel pump control element depending on the speed of a centrifugal governor

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)
  • Fuel-Injection Apparatus (AREA)

Abstract

1,207,979. Fluid-pressure servomotor systems. ROBERT BOSCH G.m.b.H. Dec.29, 1967 [Jan. 2, 1967], No.59016/67. Heading G3P. An hydraulic regulator, e.g. a governor for an I.C. engine comprises a piston type accumulator 8 having a spring 22 to bias the piston towards a stop 21 which determines its rest position, element 1 providing a source of liquid under pressure in the cylinder 5 and reciprocated by an engine driven cam (not shown) in accordance with engine speed, a spring-loaded adjusting piston 18 connected to a regulating rod of a fuel injection pump, the element 1 periodically connecting a chamber 9 of the accumulator 8 first to the chamber 5 during the pressure stroke via a passageway 10 and a check valve 11, and also a passageway 4, 3, 12, to stress the spring 22, next to chamber 5 during the suction stroke via the passageway 12 and adjustable throttle 13, and then to the adjuster cylinder 15 via a passageway 16. In the figure the control element is shown in the bottom dead centre position and liquid is supplied from a reservoir 7 to the chamber 5. Upward movement of the element 1 displaces the piston 8 upwards. During the return of the element 1, piston 8 is moved towards a stop 21 until the passage 12 is closed. As long as the speed of the control element does not exceed a predetermined value, set by the throttle 13 which retards return movement of the piston 8, the piston 8 returns to its position of rest before the chamber 9 is connected to the chamber 15 via passageways 16 and 17. Since there is no pressure differential the piston 18 remains at rest. If the speed increases the piston 8 is not able to reach the stop 21 before the passage 12 is closed and the passageway 17 is opened, and the liquid under pressure chamber 9 flows to the chamber 15 to move the piston 18 to reduce the fuel supply to the injection pump. The upward movement of the piston 8 is limited by relief passages 23 and 24. If the speed drops quickly a passage 26 causes accelerated emptying of the chamber 9 and consequently accelerated movement of the piston 18 to increase the fuel quantity. The diameters of the pistons 8 and 18 and the force of their springs are selected so that the pressure required to lift the piston 8 is greater than, or equal to, that required to lift the piston 18. The stops 20 and 21 may be made adjustable. A throttle 25 may be disposed in the passageway 17. The passage 12 may return to the reservoir which is at a low-pressure.
GB59016/67A 1967-01-02 1967-12-29 Improvements in hydraulic regulators, such as hydraulic speed governors Expired GB1207979A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR89726A FR1525077A (en) 1967-01-02 1967-01-02 Improvements to hydraulic speed regulators

Publications (1)

Publication Number Publication Date
GB1207979A true GB1207979A (en) 1970-10-07

Family

ID=8623301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB59016/67A Expired GB1207979A (en) 1967-01-02 1967-12-29 Improvements in hydraulic regulators, such as hydraulic speed governors

Country Status (5)

Country Link
US (1) US3444849A (en)
AT (1) AT288782B (en)
DE (1) DE1576293A1 (en)
FR (1) FR1525077A (en)
GB (1) GB1207979A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1020703B (en) * 1974-09-02 1977-12-30 Fiat Spa IMPROVEMENTS IN INJECTION PUMPS FOR DIESEL ENGINES WITH ELECTRONIC FLOW REGULATION
AU2016257652B2 (en) * 2015-05-01 2020-03-26 Graco Minnesota Inc. Pneumatic timing valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR717944A (en) * 1931-03-10 1932-01-16 Magnetos R B Soc D Control device for diesel engines without compressor
DE716865C (en) * 1938-04-10 1942-01-31 Kloeckner Humboldt Deutz Ag Fuel injection device for internal combustion engines
DE1000633B (en) * 1951-05-11 1957-01-10 Fiat Spa Hydraulic regulator
US2928376A (en) * 1954-02-19 1960-03-15 Keelavite Co Ltd Apparatus for the speed of regulation of hydraulic motors
US2821926A (en) * 1954-06-28 1958-02-04 Cessna Aircraft Co Variable volume reciprocating pump
US2905457A (en) * 1956-04-05 1959-09-22 Bryce Berger Ltd Hydraulic speed governing mechanism for prime movers
FR1305466A (en) * 1961-07-25 1962-10-05 Improvements to self-regulating reciprocating pumps, particularly fuel injection pumps for internal combustion engines
DE1224987B (en) * 1964-12-24 1966-09-15 Bosch Gmbh Robert Fuel injection pump for internal combustion engines

Also Published As

Publication number Publication date
US3444849A (en) 1969-05-20
FR1525077A (en) 1968-05-17
AT288782B (en) 1971-03-25
DE1576293A1 (en) 1970-05-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees