US3847063A - Vacuum operable units for ignition distributors - Google Patents

Vacuum operable units for ignition distributors Download PDF

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Publication number
US3847063A
US3847063A US00267595A US26759572A US3847063A US 3847063 A US3847063 A US 3847063A US 00267595 A US00267595 A US 00267595A US 26759572 A US26759572 A US 26759572A US 3847063 A US3847063 A US 3847063A
Authority
US
United States
Prior art keywords
diaphragm
chamber
central position
unit
casing
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.)
Ceased
Application number
US00267595A
Other languages
English (en)
Inventor
W Cooksey
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries 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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3847063A publication Critical patent/US3847063A/en
Anticipated expiration legal-status Critical
Ceased 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
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/05—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means
    • F02P5/10—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on fluid pressure in engine, e.g. combustion-air pressure
    • F02P5/103—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on fluid pressure in engine, e.g. combustion-air pressure dependent on the combustion-air pressure in engine
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86879—Reciprocating valve unit

Definitions

  • a push rod is coupled to the diaphragm and extends through one wall of the first chamber, a seal engaging the wall of the chamber and the push rod so as to permit movement of the push rod with the diaphragm, while sealing the first chamber.
  • First and second springs are positioned in the first and second chambers respectively, and either spring is operable on the diaphragm as'the diaphragm moves in a direction to reduce the volume of the respective chamber.
  • the housing supports a pair of abutments associated with the springs respectively, the springs engaging their respective abutments when the diaphragm is in a central position, so that'in the central position neither spring acts on the diaphragm.
  • one of said first and second resilient means includes an adjustable extension through which that resilient means engages the diaphragm, said extension being adjusted to ensure that the diaphragm does not have any free movement relative to said first and second resilient means while at the same time ensuring that in said central position neither resilient means acts on the diaphragm.
  • a conduit 29 is secured to the casing part 11a and communicates with the chamber 14, and a similar conduit 31 is secured to the casing part 11b and communicates with the chamber 15.
  • the diaphragm 12 When the pressure acting on both sides of the diaphragm 12 is the same then the diaphragm 12 will assume a rest position.
  • the length of the extension 24 is such that when the diaphragm is in its rest position and the washer 19 engages the abutment plate 22 then there is no clearance between the extension 24 and the washer 32.
  • the position of the grub-screw 26 relative to the extension25 is so adjusted that with the diaphragm in its rest position and the washer 21 engaged with the abutment plate 23 there is no clearance between the screw 26 and the end 34 of the push rod 13.
  • the diaphragm, in the rest position does not have any free movement relative to the springs 17, 18 while at the same time is not acted upon by the springs.
  • the springs 17, 18 are of course totally independent of one another and so when the diaphragm is moved in a direction to reduce the volume of the chamber 14 then the spring 18 takes no part in resisting or aiding the diaphragm movement, and similarly when the diaphragm is moving in a direction to reduce the volume of the chamber 15 then the spring 17 takes no part in either resisting or aiding the movement of the diaphragm.
  • the vacuum operable unit is particularly intended for use on an ignition distributor for an internal combustion engine having the facility for admitting air to the cylinders of the engine during closed throttle running conditions.
  • the admission of air into the cylinders during closed throttle running conditions minimizes the percentage of noxious products in the exhaust of the internal combustion engine, by enhancing the'combustion of fuel drawn into the cylinders during closed throttle conditions.
  • the enhanced combustion of fuel causes an increase in the power output of the engine during closed throttle conditions, and obviously this is undesirable.
  • the distributor is arranged to retard the ignition timing of the engine be yond any normally retarded setting, during closed throttle conditions, the retardation of the ignition timing negating the effects of the enhanced fuel combustion.
  • the spring 17 Since the action of the spring 17 is totally independent of the action of the spring 18 then the accuracy of the operation of the unit during normal conditions is not prejudiced by providing the facility for extra retard during closed throttle conditions.
  • the spring 18 can be set to give the optimum control characteristics for normal running of the engine without the necessity of having to provide for extra retard movement of the components of the unit.
  • the spring 17 can be chosen to give the optimum characteristics during closed throttle conditions without having to also accommodate the desired characteristics for normal running.
  • the use of the extensions 24 and sliding through apertures in the abutment plates 22, 23 affords accurate control of the overall range of movement of the diaphragm and therefore the overall range of timing adjustment which the unit can provide.
  • the thickness of the abutment plates is known accurately and the lengths of the extensions 24, 25 from their respective washers 19, 21 on one side of their respective abutment plates to their respective peripheral flanges on the other side of the abutment plates, can be controlled accurately during machining of the extensions.
  • the permitted range of movement to the left is governed by the length of the extension 24 while the permitted range of movement to the right is governed by the length of the extension 25.
  • the unit could afford 12 of ignition timing adjustment on either side of the diaphragm rest position giving 24 in all, and could be controlled to an accuracy of plus or minus /2".
  • a unit as claimed in claim 2 wherein said means for adjusting its respective extension is adjustable from the exterior of the unit by way of a scalable aperture in casing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Actuator (AREA)
US00267595A 1971-07-02 1972-06-29 Vacuum operable units for ignition distributors Ceased US3847063A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3107971A GB1387425A (en) 1971-07-02 1971-07-02 Vacuum operable units for ignition distributors

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US06/020,202 Reissue USRE31189E (en) 1971-07-02 1979-11-16 Vacuum operable units for ignition distributors

Publications (1)

Publication Number Publication Date
US3847063A true US3847063A (en) 1974-11-12

Family

ID=10317640

Family Applications (2)

Application Number Title Priority Date Filing Date
US00267595A Ceased US3847063A (en) 1971-07-02 1972-06-29 Vacuum operable units for ignition distributors
US06/020,202 Expired - Lifetime USRE31189E (en) 1971-07-02 1979-11-16 Vacuum operable units for ignition distributors

Family Applications After (1)

Application Number Title Priority Date Filing Date
US06/020,202 Expired - Lifetime USRE31189E (en) 1971-07-02 1979-11-16 Vacuum operable units for ignition distributors

Country Status (9)

Country Link
US (2) US3847063A (oth)
JP (1) JPS5339534B1 (oth)
AR (1) AR195382A1 (oth)
AU (1) AU460809B2 (oth)
DE (1) DE2232550C2 (oth)
ES (1) ES404500A1 (oth)
FR (1) FR2145167A5 (oth)
GB (1) GB1387425A (oth)
IT (1) IT956617B (oth)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965223A (en) * 1974-09-18 1976-06-22 Schmelzer Corporation Charge forming device
US4251050A (en) * 1977-10-18 1981-02-17 The Garrett Corp. Turbocharger control actuator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1025107B (it) * 1974-10-23 1978-08-10 Magneti Marelli Spa Capsula del correttore di anticipo depressione per distributori d accensione
US5293576A (en) * 1991-11-21 1994-03-08 Motorola, Inc. Command authentication process

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824186A (en) * 1955-07-18 1958-02-18 Magnetrol Inc Fluid pressure actuator
US2837119A (en) * 1953-11-12 1958-06-03 Kromschroeder Ag G Combined control diaphragm and safety diaphragm for gas pressure regulator
US2905199A (en) * 1953-12-28 1959-09-22 Westinghouse Air Brake Co Fluid pressure actuator
US2916019A (en) * 1955-08-30 1959-12-08 Western Electric Co Cushioned valves
US3221761A (en) * 1962-04-03 1965-12-07 Robertshaw Controls Co Pneumatic controller
US3648571A (en) * 1970-07-02 1972-03-14 F & E Mfg Co Vacuum motor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE644649C (de) * 1935-12-14 1937-05-10 Fried Krupp Akt Ges Fernsteuerung fuer insbesondere mit Schiebersteuerung ausgeruestete Antriebsmaschinen von Dampffahrzeugen
DE684396C (de) * 1938-03-22 1939-11-27 Bosch Gmbh Robert Zuendverteiler
US2945478A (en) * 1957-06-19 1960-07-19 Westinghouse Electric Corp High frequency response valve
DE1965599U (de) * 1967-04-01 1967-08-03 Fritz Lindhorst Kraftfahrzeug mit glatteisanzeigegeraet.
US3385275A (en) * 1967-10-11 1968-05-28 Ford Motor Co Ignition distributor advance control mechanism for a reciprocating engine
DE1576695A1 (de) * 1967-10-27 1970-02-19 Brooks Walker Brennkraftmaschine
DE1601425C3 (de) * 1968-01-05 1981-04-09 Robert Bosch Gmbh, 7000 Stuttgart Zündzeitpunkt-Verstellvorrichtung für Brennkraftmaschinen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2837119A (en) * 1953-11-12 1958-06-03 Kromschroeder Ag G Combined control diaphragm and safety diaphragm for gas pressure regulator
US2905199A (en) * 1953-12-28 1959-09-22 Westinghouse Air Brake Co Fluid pressure actuator
US2824186A (en) * 1955-07-18 1958-02-18 Magnetrol Inc Fluid pressure actuator
US2916019A (en) * 1955-08-30 1959-12-08 Western Electric Co Cushioned valves
US3221761A (en) * 1962-04-03 1965-12-07 Robertshaw Controls Co Pneumatic controller
US3648571A (en) * 1970-07-02 1972-03-14 F & E Mfg Co Vacuum motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965223A (en) * 1974-09-18 1976-06-22 Schmelzer Corporation Charge forming device
US4251050A (en) * 1977-10-18 1981-02-17 The Garrett Corp. Turbocharger control actuator

Also Published As

Publication number Publication date
AU460809B2 (en) 1975-05-08
DE2232550C2 (de) 1983-03-03
IT956617B (it) 1973-10-10
DE2232550A1 (de) 1973-01-11
JPS5339534B1 (oth) 1978-10-21
FR2145167A5 (oth) 1973-02-16
USRE31189E (en) 1983-03-29
GB1387425A (en) 1975-03-19
AR195382A1 (es) 1973-10-08
AU4363472A (en) 1974-01-03
ES404500A1 (es) 1975-06-01

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