US3707951A - Storage control for gasoline injection installations of combustion engines - Google Patents

Storage control for gasoline injection installations of combustion engines Download PDF

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Publication number
US3707951A
US3707951A US00076901A US7690170A US3707951A US 3707951 A US3707951 A US 3707951A US 00076901 A US00076901 A US 00076901A US 7690170 A US7690170 A US 7690170A US 3707951 A US3707951 A US 3707951A
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US
United States
Prior art keywords
storage control
storage
control apparatus
operating conditions
engine
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
US00076901A
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English (en)
Inventor
Erhard Bigalke
Dieter H W Pundt
Juergen Wolf
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.)
Volkswagen AG
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Volkswagen AG
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Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
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Publication of US3707951A publication Critical patent/US3707951A/en
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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
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection

Definitions

  • the quantity of fuel is fed at each moment to the engine which is required for the achievement of an optimum operating behavior (specific fuel consumption, composition of the exhaust gas, etc.).
  • this object will be achieved in that a disk representing the storage and which is divided into surface elements, each of which corresponds to a certain operational state, is moved relative to an information receiver or information transmitter in dependence on the pertinent operating state, which information receiver or transmitter controls the opening times of the injection valves in correspondence with the information or operating state transmitted to it.
  • the storage is developed in such a way that the surface elements of the disk have variable light transmission and that a light barrier serves as information receiver or transmitter consisting of a light source of definite intensity of illumination and of a light sensitive element, for example a photoconductive or photo-electric cell.
  • a particular advantage of this storage is that, once a sample disk is available,
  • the relative movement of the disk and light barrier can be a function either of the suction pipe pressure or of the angle of the throttle value.
  • the disk can be twisted directly by an adjustment of the throttle valve as a second characteristic value, for the adjustment of the light barrier effectively the r.p.m. is used.
  • the' disk can be rotated in dependence on the suction pipe pressure and in that case the r.p.m. being used likewise as the second independent variable.
  • a second possibility of achieving the invention is present by a ferromagnetic disk moving in an air gap of an iron circuit and having stored therein the information in the form of variable thicknesses.
  • Various thicknesses of the disk signify a variable air gap and thereby change of an inductivity which is used as a time determining element of a monostable sweep stage.
  • a still further object of the invention resides in the fact that the storage may also be used for the electronic adjustment being dependent indeed on the same control values.
  • the entire disk is not needed for the control of the duration of the impulse, therefore for the control of the opening times of the injection valves.
  • the ignition point adjustment field of a high voltage capacitor ignition installation may be stored with the aid of a second light barrier which is mechanically coupled with the first one: the resistance" of the light receiver being a part of the RC element in the thyristor trigger circuit changes, and as a result the ignition point is shifted.
  • the storage control according to the invention corn bines within itself the advantages of the space cam control (advantage: performance graph control) known in the case of mechanical injection installations, as well as those of the known electronic injection installations (advantage: less constructional expenditure for fewer movable parts, greater operating reliability).
  • the storage can be reproduced by simple means and is therefore particularly suitable for large scale serial production of such injection installations.
  • the adjustment of the electronic circuit is possible without difficulty despite maintenance of small tolerances.
  • Simple electronic construction units, (sweep stages, differential amplifiers), can be used which make possible an extensive integration of the circuit. Further, it is desired to again point out once more the possibility already mentioned of a simultaneous adjustment of the ignition point.
  • FIG. 1 is a diagrammatic view of the basic structure of a photoelectronic storage means according to the invention.
  • FIG. 2 is a block diagram of the electronic injection installation with electronic storage and connected to an engine.
  • disk 1 with variable transparency may be moved or rotated between a light barrier 4 formed by a point shaped light source 2 of definite intensity of illumination and a light sensitive element 3, (for example a photoconductive or electric cell).
  • the shaft 5 of the disk 1 is driven by a torque pickup 6 which operates according to the principle of the moving coil instrument.
  • the value of the torsion is determined by the rpm. 7 which is injected in the form of an electronic voltage by the electronic r.p.m. transmitter of the control instrument (compare FIG. 2).
  • the light barrier 4 can be shifted in the direction of the arrow in dependence on the suction pipe pressure and the latter acts on a bellows 8, which as a result thereof, is more or less compressed or pulled apart.
  • the pulse time assigned to every operational state that is to say, the time which is available for the injection of the fuels on the valves is available as a unit of density of or on the disk 1 and is transformed by the light receiver 3 into a proportional voltage and is further processed in the control instrument.
  • the storage value transmitted in dependence on the degree of density determines the duration of the impulse of a pulse transmitter stage, that is, the degree of density therefore is a measure for the injection time.
  • the pulse time is selected from the storage 9 with the aid of the pressure in the suction pipe 11 taken from the suction distributor and the rpm. 12 and is transmitted to a control instrument 14, and from there is fed to a pulse generator 17, monostable sweep stage, by means of an amplifier stage 15 with a balancing potentiometer 16, for adjustment of the sensitivity or tolerances. Additionally a temperature requirement 18 of the temperature sensor 19, will have an influence on the heating up phase.
  • a storage control apparatus for internal combustion engine fuel injection systems wherein the opening times of the injection valves are controlled in ac cordance with a combination of at least two engine operating conditions selected from the group of operating conditions consisting of the pressure of the intake pipe, the engine rpm, and the position of the throttle valve, said storage control apparatus having a storage member with a surface divided into individual elements each of which represents an in ection valve opening time associated with the said combination of at least two engine operating conditions, and means for extracting information recorded on each of said surface elements by relative movement between said storage member and said means for extracting, the improvement in said storage control apparatus comprising:
  • said storage member is a disc and said individual surface elements are blackened areas of various degrees of transparency on said surface
  • said means for extracting comprises a light transmitter and light receiver which are responsive to the various degrees of transparency, said light transmitter and said light receiver are respectively mounted in fixed relationship to one another on opposite sides of said surface, means for relatively moving said light transmitter and said light receiver with respect to said surface in accordance with the changes in one of said two engine operating conditions, means for moving said disc with respect to said light transmitter and said light receiver in accordance with the other of said two operating conditions, and control means responsive to signals from said light receiver for generating signals for controlling said opening times of the injection valves.
  • a storage control apparatus as in claim 1 wherein said means for moving rotates said disc around an axis through its center.
  • a storage control apparatus as in claim 1 wherein said means for extracting further comprises an additional light transmitter and receiver, said disc further includes additional storage elements representing information for adjusting the ignition times of said engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Fuel-Injection Apparatus (AREA)
US00076901A 1969-10-02 1970-09-30 Storage control for gasoline injection installations of combustion engines Expired - Lifetime US3707951A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691949725 DE1949725A1 (de) 1969-10-02 1969-10-02 Speichersteuerung fuer Benzineinspritzanlagen bei Verbrennungskraftmaschinen

Publications (1)

Publication Number Publication Date
US3707951A true US3707951A (en) 1973-01-02

Family

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Family Applications (1)

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US00076901A Expired - Lifetime US3707951A (en) 1969-10-02 1970-09-30 Storage control for gasoline injection installations of combustion engines

Country Status (4)

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US (1) US3707951A (enrdf_load_stackoverflow)
JP (1) JPS4943749B1 (enrdf_load_stackoverflow)
DE (1) DE1949725A1 (enrdf_load_stackoverflow)
GB (1) GB1290048A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835821A (en) * 1970-09-04 1974-09-17 Lucas Industries Ltd Petrol injection systems for internal combustion engines

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2458946C2 (de) * 1974-12-12 1983-02-17 Siemens AG, 1000 Berlin und 8000 München Optischer Analog-Festwertspeicher
JPH01227401A (ja) * 1988-03-08 1989-09-11 Ngk Insulators Ltd 電圧非直線抵抗体

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834405A (en) * 1930-05-31 1931-12-01 Wilho A Kosken Inc Automatic monitor-system
US2398238A (en) * 1942-05-09 1946-04-09 Standard Oil Dev Co Integrating apparatus
US2543021A (en) * 1945-11-08 1951-02-27 Standard Telephones Cables Ltd Direction finder
US2635195A (en) * 1951-03-12 1953-04-14 Northrop Aircraft Inc Graph sensing device
US2856910A (en) * 1956-04-23 1958-10-21 Acf Ind Inc Fuel injection system
DE1208553B (de) * 1957-12-07 1966-01-05 Bosch Gmbh Robert Elektrische Kraftstoffeinspritzanlage fuer Brennkraftmaschinen, insbesondere von Kraftfahrzeugen
US3408634A (en) * 1964-01-08 1968-10-29 Bendix Corp Optical memory system
US3543739A (en) * 1967-10-11 1970-12-01 Brev Etudes S I B E De Fuel feed device for an internal combustion engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834405A (en) * 1930-05-31 1931-12-01 Wilho A Kosken Inc Automatic monitor-system
US2398238A (en) * 1942-05-09 1946-04-09 Standard Oil Dev Co Integrating apparatus
US2543021A (en) * 1945-11-08 1951-02-27 Standard Telephones Cables Ltd Direction finder
US2635195A (en) * 1951-03-12 1953-04-14 Northrop Aircraft Inc Graph sensing device
US2856910A (en) * 1956-04-23 1958-10-21 Acf Ind Inc Fuel injection system
DE1208553B (de) * 1957-12-07 1966-01-05 Bosch Gmbh Robert Elektrische Kraftstoffeinspritzanlage fuer Brennkraftmaschinen, insbesondere von Kraftfahrzeugen
US3408634A (en) * 1964-01-08 1968-10-29 Bendix Corp Optical memory system
US3543739A (en) * 1967-10-11 1970-12-01 Brev Etudes S I B E De Fuel feed device for an internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835821A (en) * 1970-09-04 1974-09-17 Lucas Industries Ltd Petrol injection systems for internal combustion engines

Also Published As

Publication number Publication date
GB1290048A (en) 1972-09-20
JPS4943749B1 (enrdf_load_stackoverflow) 1974-11-22
DE1949725A1 (de) 1971-07-22

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