GB1477456A - Fluid pressure generators - Google Patents

Fluid pressure generators

Info

Publication number
GB1477456A
GB1477456A GB3333773A GB3333773A GB1477456A GB 1477456 A GB1477456 A GB 1477456A GB 3333773 A GB3333773 A GB 3333773A GB 3333773 A GB3333773 A GB 3333773A GB 1477456 A GB1477456 A GB 1477456A
Authority
GB
United Kingdom
Prior art keywords
stack
fluid pressure
piston
source
crystals
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
GB3333773A
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
Priority to GB3333773A priority Critical patent/GB1477456A/en
Priority to DE19742433236 priority patent/DE2433236A1/en
Priority to IT5203774A priority patent/IT1016375B/en
Priority to JP8009274A priority patent/JPS5033328A/ja
Priority to FR7424400A priority patent/FR2257798B1/fr
Priority to FR7440523A priority patent/FR2243343B1/fr
Priority to US05/562,449 priority patent/US3983855A/en
Publication of GB1477456A publication Critical patent/GB1477456A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
    • F04B9/107—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F04B53/125—Reciprocating valves
    • F04B53/129—Poppet valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0266—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated the inlet and discharge means being separate members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

1477456 Piezoelectric actuators C A V Ltd 8 July 1974 [12 July 1973] 33337/73 Heading H2A [Also in Divisions F1 and F2] In a fluid pressure generating arrangement wherein a stack of piezoelectric crystals 34 is mechanically coupled to a piston (33, Fig. 1, not shown) for driving the piston within a cylinder, the crystals 40 of the stack are electrically connected to form at least two groups which can be separately connected to a source to produce different movements of the piston, thereby to obtain different fluid pressures within the cylinder, e.g. for operating two valves (23, 24) at their different respective operating pressures. In the arrangement shown, alternate electrodes 41 between the crystals 40 in the stack are connected together for connection to a terminal 42 of a source, and the remaining alternate electrodes 41 are connected together in groups for connection to a terminal 43 of the source by way of a pair of switches 44. By closing one switch 44, the stack 34 can be partially energized to produce a first fluid pressure, and by closing both switches the stack can be fully energized to produce a second fluid pressure. The arrangement is employed in a fuel injection system (see Division F1)
GB3333773A 1973-07-12 1973-07-12 Fluid pressure generators Expired GB1477456A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB3333773A GB1477456A (en) 1973-07-12 1973-07-12 Fluid pressure generators
DE19742433236 DE2433236A1 (en) 1973-07-12 1974-07-11 MEDIUM PRESSURE GENERATOR
IT5203774A IT1016375B (en) 1973-07-12 1974-07-11 FUEL INJECTION SYSTEM FOR ENGINES AND PRESSURE GENERATOR FOR IT
JP8009274A JPS5033328A (en) 1973-07-12 1974-07-12
FR7424400A FR2257798B1 (en) 1973-07-12 1974-07-12
FR7440523A FR2243343B1 (en) 1973-07-12 1974-12-10
US05/562,449 US3983855A (en) 1973-07-12 1975-03-27 Fuel injection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3333773A GB1477456A (en) 1973-07-12 1973-07-12 Fluid pressure generators

Publications (1)

Publication Number Publication Date
GB1477456A true GB1477456A (en) 1977-06-22

Family

ID=10351646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3333773A Expired GB1477456A (en) 1973-07-12 1973-07-12 Fluid pressure generators

Country Status (5)

Country Link
JP (1) JPS5033328A (en)
DE (1) DE2433236A1 (en)
FR (2) FR2257798B1 (en)
GB (1) GB1477456A (en)
IT (1) IT1016375B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2411313A1 (en) * 1977-12-09 1979-07-06 Lucas Industries Ltd FUEL INJECTION SYSTEM
FR2448640A1 (en) * 1979-02-09 1980-09-05 Lucas Industries Ltd FUEL DISTRIBUTION SYSTEM FOR INTERNAL COMBUSTION ENGINE
FR2476229A1 (en) * 1980-02-19 1981-08-21 Lucas Industries Ltd FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE
GB2157091A (en) * 1984-03-31 1985-10-16 Deutsche Forsch Luft Raumfahrt Piezoceramic servo-drive for producing translational motion, especially for application to ring laser mirrors
GB2179802A (en) * 1985-08-24 1987-03-11 Reifenhaeuser Masch A piezo-electric drive for a shaping tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1555478A (en) * 1975-09-19 1979-11-14 Lucas Industries Ltd Fuel injection system for internal combustion engines
FR2949505B1 (en) * 2009-09-03 2011-09-02 Peugeot Citroen Automobiles Sa REDUCER INJECTION DEVICE FOR SELECTIVE CATALYTIC REDUCTION AND ASSEMBLY COMPRISING AN ENGINE AND AN EXHAUST LINE PROVIDED WITH SUCH AN INJECTION DEVICE

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2411313A1 (en) * 1977-12-09 1979-07-06 Lucas Industries Ltd FUEL INJECTION SYSTEM
FR2448640A1 (en) * 1979-02-09 1980-09-05 Lucas Industries Ltd FUEL DISTRIBUTION SYSTEM FOR INTERNAL COMBUSTION ENGINE
FR2476229A1 (en) * 1980-02-19 1981-08-21 Lucas Industries Ltd FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE
GB2157091A (en) * 1984-03-31 1985-10-16 Deutsche Forsch Luft Raumfahrt Piezoceramic servo-drive for producing translational motion, especially for application to ring laser mirrors
US4639630A (en) * 1984-03-31 1987-01-27 Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V. Piezoceramic servo-drive for producing translational motion, especially for application to ring laser mirrors
GB2179802A (en) * 1985-08-24 1987-03-11 Reifenhaeuser Masch A piezo-electric drive for a shaping tool
GB2179802B (en) * 1985-08-24 1989-05-10 Reifenhaeuser Masch Shaping tool unit for an extrusion press

Also Published As

Publication number Publication date
FR2257798A1 (en) 1975-08-08
FR2243343B1 (en) 1978-12-01
FR2243343A1 (en) 1975-04-04
FR2257798B1 (en) 1978-02-03
IT1016375B (en) 1977-05-30
JPS5033328A (en) 1975-03-31
DE2433236A1 (en) 1975-01-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee