US3687120A - Control installation for combustion engines - Google Patents

Control installation for combustion engines Download PDF

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Publication number
US3687120A
US3687120A US49816A US3687120DA US3687120A US 3687120 A US3687120 A US 3687120A US 49816 A US49816 A US 49816A US 3687120D A US3687120D A US 3687120DA US 3687120 A US3687120 A US 3687120A
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United States
Prior art keywords
magnetic valve
installation according
rotational speed
vacuum
valve means
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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
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US49816A
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English (en)
Inventor
Siegfried Lenz
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Daimler Benz AG
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Daimler Benz AG
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    • 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
    • F02P5/106—Combustion-air pressure devices combined with other specific conditions

Definitions

  • the present invention relates to a control installation for internal combustion engines in which an adjustment of the ignition point or sparking instant at the ignition distributor and a thrust lift or boost of the throttle valve takes place by the vacuum taken off from the suction line.
  • Spark advance and retard mechanisms are known in the prior art which operate either as centrifugal force ignition adjusting mechanism or as vacuum ignition adjusting mechanism.
  • the centrifugal force-adjusting mechanism operates automatically independence on the engine rotational speed in that two flyweights transmit their movement which is directed outwardly during the rotation, by way of an entrainment member to the breaker cam which is rotated as a result thereof and thereby opens the contact-breaker points earlier in time. With a decreasing rotational speed, the flyweights are pulled back into their rest position by springs whereby the reverse effect occurs.
  • a pull-rod operatively connected with a diaphragm of the vacuum box changes the position of the contact-breaker points whereby an ignition timing adjustment is achieved.
  • the vacuum box is in communication with the suction pipe of the carburetor by way of a line, through which vacuum is fed to the diaphragm from two places of the carburetor vacuum; namely, from the Venturi nozzle and from the throttle valve.
  • spark advance and retard mechanisms are known in the prior art which fonn a combination of a vacuum-adjusting mechanism and of a centrifugal force-adjusting mechanism. With all known spark advance and retard mechanisms, the constructive expenditures are very large and, additionally, the known spark advance and retard mechanisms tend toward faulty operation which may considerably influence the course of combustion. Furthermore, all engine characteristic magnitudes are not taken into consideration in the control of the ignition point or sparking instant, such as, for example, the temperature.
  • an electric control circuit which controls in dependence on engine influencing magnitudes, preferably in dependence on the temperature and the rotational speed, two magnetic or solenoid valves that are arranged in the vacuum line so that the ignition point or firing instant is adjusted and the thrust boost of the throttle valve is achieved.
  • at least two thermal-switches, a rotational speed relay, and the solenoid valves may be arranged in the electric control circuit. It has thereby proved as very appropriate that the thermal-switches close the circuit within a temperature range of preferably about 15 to C. and render the installation ready for operation.
  • This measure can be achieved very simply in that one thermal-switch closes the circuit at a temperature of about 15 C. and the other thermal-switch opens the circuit at a temperature above 100 C.
  • This temperature range is preferably so selected because with a sealed cooling water system, the cooling water begins to boil at about 100 C.
  • the rotational speed relay provided in the circuit may consist preferably of two control switches which control each a respective solenoid valve.
  • the two solenoid valves of which one is constructed as a three-way valve and controls the ignition timing and of which the other solenoid valve is constructed preferably as a twoway valve and controls the thrust lift of the throttle valve in a conventional manner are in communication with the suction pipe by way of a vacuum line.
  • each solenoid valve is in communication with the suction pipe by way of a separate line whereby the vacuum can possibly be tapped at different places of the suction pipe.
  • control switch of the rotational speed relay operatively connected with the three-way magnetic valve energizes the magnetic valve, for example, within a rotational speed range of n n to n 2,400 rpm. It is also advantageous if the control switch of the rotational speed relay operatively connected with the two-way magnetic valve energizes the magnetic valve, for example, within a rotational speed range of n 1,800 to n nm rpm-
  • the preselected rotational speed ranges are determined according to the design of the engine and may possibly be shifted to higher as well as to lower rotational speeds.
  • each magnetic valve may thus be opened by at least three electric switches, and more particularly, by the two thermal-switches and a corresponding control switch of the rotational speed relay.
  • still further switches are arranged in each energizing circuit of a magnetic valve which are controlled by other influencing magnitudes.
  • a vacuum box adapted to be acted upon on both sides with vacuum, is provided in the vacuum line at the distributor which is controlled by the three-way magnetic valve.
  • An armature is advantageously guided on the inside of a winding or coil in the three-way magnetic valve, which is provided at its two ends with one valve seat each so that a respective one of the two vacuum lines in communication with the vacuum box of the distributor is closed in the energized condition by means of the magnetic force and in the de-energized condition by means of a spring force. It is thereby appropriate that the three-way magnetic valve opens up in the energized condition the vacuum line to the side of the vacuum box which effects a retardation of the ignition point whereas in the deenergized condition the three-way magnen'c valve opens up correspondingly the line to the side of the vacuum box which effects an advance of the ignition point.
  • the diaphragm acted upon with the vacuum in the vacuum box effects in a conventional manner by way of a lever mechanism an adjustment of the contact-breaker points. Since with a sudden closing of the three-way magnetic valve, the vacuum would remain in the vacuum box, the box is advantageously provided with a venting means in communication with the atmosphere so that a pressure equalization can take place.
  • the other valve constructed as conventional twoway magnetic valve which is also in communication with the suction pipe by way of the vacuum line and which is controlled by a control switch of the rotational speed relay, opens up in the de-energized condition the vacuum line to the vacuum regulator at the carburetor so that the latter operates in the normal condition.
  • the armature In an energized condition, the armature is pulled into the coil and atmospheric air flows into the magnetic valve and throttled into the vacuum line which, by reason of the very small selected throttling cross section is not harmful.
  • Another object of the present invention resides in a control installation for internal combustion engines which properly controls the ignition point by simple means, taking into consideration all the pertinent characteristic magnitudes that require consideration.
  • a further object of the present invention resides in a control system for internal combustion engines which assures as fault-free an operation of the combustion progress as possible.
  • Still another object of the present invention resides in an ignition advance and retard mechanism which operates satisfactorily under all driving conditions.
  • FlG. l is a schematic view of the over-all installation in accordance with the present invention including the electric control circuit thereof;
  • FIG. 2 is a partially broken-away view of the threeway magnetic valve used with the control installation in accordance with the present invention.
  • this figure illustrates the electric control circuit 1 which controls the solenoid valves 2 and 3 in dependence on the temperature and the rotational speed.
  • the magnetic valves 2 and 3 are arranged in the vacuum line 4.
  • Two thermal switches t5 and 7, a rotational speed relay generally designated by reference numeral 8, and the magnetic valves 2 and 3 are arranged in the electric control circuit 1 which is fed by the voltage source 5.
  • the solenoid valves 2 and 3 may be connected advantageously in the control circuit 1 by means of conventional plugs 9.
  • the switch 6 closes the circuit at a temperature higher than about 15 C. whereas the switch 7 opens the circuit at a temperature higher than about C.
  • the rotational speed relay 8 consists of two control switches 10 and 11 which control each a respective magnetic valve 2 and 3.
  • the magnetic valve 2 is constructed as three-way valve and controls the ignition timing adjustment.
  • the magnetic valve 3 is constructed as two-way valve and in a conventional manner the thrust lift of the throttle valve 12 of the carburetor 13 with the aid of a vacuum regulator 14.
  • the control switch 10 of the rotational speed relay 8 controls the magnetic valve, for example, within a rotational speed range of n ri to n 2,400 rpm.
  • a vacuum box 18 is provided at the distributor 17 in the vacuum lines 15 and 16 which is adapted to be acted upon on both sides with the vacuum and which is controlled by the magnetic valve 2.
  • the magnetic valve 2 is shown in detail in FIG. 2.
  • a winding 19 can be recognized on the inside of the magnetic valve 2, within which is guided the armature 20.
  • the armature 20 includes at the two ends thereof a I valve seat 21 and 22, by means of which it is able to close a respective one of the two vacuum lines 15 and 16.
  • the armature 20 closes the vacuum line 16 in that it is pulled into the winding 19 against the spring force of the spring 23, until it seats on the orifice of the vacuum line T6.
  • the spring 23 presses the armature 20 against the orifice of the vacuum line 15 so that the latter is closed.
  • the operation of the control system is to be explained by reference to one example.
  • the position of the control installation illustrated in FIG. 1 is valid for a rotational speed smaller than 1,800 rpm. and for a temperature which lies between about 15 C. and about 100 C.
  • the control installation is ready for operation by the closing of the thermal switches 6 and 7. Since the rotational speed lies below 1,800 rpm, the control switch 111 is open and the control switch 10 is closed so that the magnetic valve 2 is energized and the magietic valve 3 is de-energized.
  • the magnetic valve 2 closes in the energized condition the vacuum line 16 so that the vacuum, which is bled from the suction line of the carburetor 1.3 by way of the vacuum line 4, acts fully on the side of the vacuum box 18 in communication with the vacuum line 15 and a retardation of the ignition point takes place.
  • the switch 6 opens and the circuit to the two magnetic valves 2 and 3 is interrupted; this means that the armature closes in the de-energized condition the vacuum line 15 and the vacuum effects by way of the vacuum line 16 with the aid of the vacuum box 18 an advance of the ignition point.
  • the magnetic valve 3 does not change its positron.
  • the thermal switch 7 interrupts the control circuit and the two magnetic valves 2 and 3 are de-energized.
  • the thermal switch 7 interrupts the control circuit and the two magnetic valves 2 and 3 are de-energized.
  • adjustable throttle valve means including a throttle valve arranged in a suction line of the engine, distributor means having an adjustable ignition point and connecting vacuum line means connecting said adjustable throttle valve means and said distributor means to said suction line whereby the thrust boost at the throttle valve and the adjustment of the ignition point at the distributor means takes place by the vacuum taken off from the suction line
  • a control installation including a first magnetic valve means arranged in said connecting means for controlling the application of the vacuum of said suction line to said adjustable throttle valve means, a second magnetic valve means arranged in said connecting means for controlling the application of the vacuum of said suction line to said distributor means, and electric control circuit means responsive to operating magnitudes of the engine for actuating each of said magnetic valve means independently of the actuation of the other of said magnetic valve means such that the adjustment of the ignition point at the distributor means and the adjustment of the thrust boost of the throttle valve means is achieved independently of the other.
  • a control installation for internal combustion engines in which an adjustment of the ignition point at the distributor and a thrust boost at the throttle valve takes place by the vacuum taken off from the suction line, characterized by an electric control circuit means operable to control two magnetic valve means in dependence of engine influencing magnitudes, said magnetic valve means being arranged in vacuum line means so that the ignition point is adjusted and the thrust boost of the throttle valve is achieved, at least two thermal switch means, a rotational speed relay means and said magnetic valve means being arranged in said electric control circuit means.
  • a control installation according to claim 8 characterized in that the control switch means of the rotational speed relay means operatively connected with the three-way magnetic valve means engages the three-way magnetic valve means within a predetermined rotational speed range.
  • said last-mentioned rotational speed range is from n n to about n 2,400 rpm.
  • a control installation characterized in that said three-way magnetic valve means includes a coil and an armature guided within said coil which is provided at both of its ends with a valve seat, and in that a respective one of two vacuum line means in operative connection with the vacuum box means is closed in the energized condition by the magnetic force and in the de-energized condition by the spring force of a spring.

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  • 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)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Magnetically Actuated Valves (AREA)
US49816A 1969-07-02 1970-06-25 Control installation for combustion engines Expired - Lifetime US3687120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691933507 DE1933507B2 (de) 1969-07-02 1969-07-02 Verstellvorrichtung fuer zuendzeitpunkt und drosselklappenschliesstellung von brennkraftmaschinen

Publications (1)

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US3687120A true US3687120A (en) 1972-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
US49816A Expired - Lifetime US3687120A (en) 1969-07-02 1970-06-25 Control installation for combustion engines

Country Status (6)

Country Link
US (1) US3687120A (enrdf_load_stackoverflow)
JP (1) JPS5018533B1 (enrdf_load_stackoverflow)
DE (1) DE1933507B2 (enrdf_load_stackoverflow)
FR (1) FR2054040A5 (enrdf_load_stackoverflow)
GB (1) GB1305235A (enrdf_load_stackoverflow)
SE (1) SE355214B (enrdf_load_stackoverflow)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776205A (en) * 1971-07-29 1973-12-04 Nissan Motor Ignition timing control system
US3783846A (en) * 1971-11-30 1974-01-08 Gen Motors Corp Internal combustion engine ignition spark vacuum advance system
US3799134A (en) * 1971-12-14 1974-03-26 Volkswagenwerk Ag Combustion engine with quick arrangement for its exhaust gas cleaning device during cold or idle run
US3810451A (en) * 1971-12-17 1974-05-14 Gen Motors Corp Ignition spark vacuum advance system
US3824972A (en) * 1972-08-11 1974-07-23 Gen Motors Corp Ignition spark vacuum advance system
US3865089A (en) * 1972-01-21 1975-02-11 Bosch Gmbh Robert Method and system to reduce polluting emission from internal combustion engines
US3871341A (en) * 1970-12-21 1975-03-18 Optimizer Control Corp Speed controlled ignition retarder
US3882739A (en) * 1971-11-17 1975-05-13 Daimler Benz Ag Drive unit with an internal combustion engine and with an automatic change-speed transmission connected in the output thereof
US3913539A (en) * 1972-04-20 1975-10-21 Acf Ind Inc Thermo switch arrangement for control of an internal combustion engine
US3978831A (en) * 1973-07-03 1976-09-07 Toyota Jidosha Kogyo Kabushiki Kaisha Control device for a vacuum advancer
US4068632A (en) * 1974-12-25 1978-01-17 Fuji Jukogyo Kabushiki Kaisha Internal combustion engine
US4077373A (en) * 1973-12-11 1978-03-07 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control device for an internal combustion engine
US4094282A (en) 1976-02-25 1978-06-13 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control apparatus for engine during warm-up
US4096843A (en) * 1973-06-18 1978-06-27 Ethyl Corporation Starting system
US4133324A (en) * 1976-07-07 1979-01-09 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control for engine
US4140092A (en) * 1976-04-16 1979-02-20 Air Quality Products, Inc. Control system for internal combustion engine
US4149499A (en) * 1974-12-26 1979-04-17 Honda Giken Kogyo Kabushiki Kaisha Vacuum controlled ignition timing apparatus for internal combustion engine
US4158349A (en) * 1975-12-11 1979-06-19 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control system for an internal combustion engine
US4177776A (en) * 1970-02-27 1979-12-11 Toyota Jidosha Kogyo Kabushiki Kaisha Ignition system for internal combustion engines
USRE30599E (en) * 1976-07-07 1981-05-05 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control for engine
EP0138143A3 (de) * 1983-10-14 1986-05-28 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Vorrichtung zur Zündverstellung im Leerlauf einer Brennkraftmaschine
EP0226915A3 (en) * 1985-12-23 1988-08-17 Fiat Auto S.P.A. A device for reducing the polluting emissions of a heat engine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218846B2 (enrdf_load_stackoverflow) * 1973-01-29 1977-05-24
JPS5217639Y2 (enrdf_load_stackoverflow) * 1974-08-08 1977-04-21
JPS5314825Y2 (enrdf_load_stackoverflow) * 1974-12-24 1978-04-19
JPS5242288Y2 (enrdf_load_stackoverflow) * 1974-12-26 1977-09-26
JPS5244747Y2 (enrdf_load_stackoverflow) * 1975-08-11 1977-10-12
JPS5225939A (en) * 1975-08-25 1977-02-26 Hitachi Ltd Ignition timing controller
DE2603322C2 (de) * 1976-01-29 1983-01-20 Toyota Jidosha Kogyo K.K., Toyota, Aichi Zündzeitpunktverstellvorrichtung
DE2823711C2 (de) * 1978-05-31 1983-04-28 Volkswagenwerk Ag, 3180 Wolfsburg Verfahren und Anordnung zur Stabilisierung des Leerlaufdrehzahlwerts einer fremdgezündeten Brennkraftmaschine, deren Brennräumen ein Kraftstoff-Luft-Gemisch zugeführt wird
JPS5647640A (en) 1979-09-27 1981-04-30 Nissan Motor Co Ltd Exhaust gas purification controller for internal combustion engine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1761513A (en) * 1929-03-08 1930-06-03 Delco Remy Corp Ignition device
DE634298C (de) * 1935-06-21 1936-08-22 Robert Bosch Akt Ges Einrichtung zum Verstellen des Zuendzeitpunktes an Verbrennungsmotoren
US3027884A (en) * 1960-11-18 1962-04-03 Gen Motors Corp Engine device for reducing unburned hydrocarbons
US3272191A (en) * 1965-03-04 1966-09-13 Walker Brooks Engine spark control for reducing smog
US3301242A (en) * 1964-08-13 1967-01-31 Gen Motors Corp Ignition timing device
US3547089A (en) * 1967-04-06 1970-12-15 Ind De Brenets Et D Etudes S I Carburation device for internal combustion engines for automobile vehicles
US3559666A (en) * 1969-08-18 1971-02-02 Brooks Walker Governor mounted in a generator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1761513A (en) * 1929-03-08 1930-06-03 Delco Remy Corp Ignition device
DE634298C (de) * 1935-06-21 1936-08-22 Robert Bosch Akt Ges Einrichtung zum Verstellen des Zuendzeitpunktes an Verbrennungsmotoren
US3027884A (en) * 1960-11-18 1962-04-03 Gen Motors Corp Engine device for reducing unburned hydrocarbons
US3301242A (en) * 1964-08-13 1967-01-31 Gen Motors Corp Ignition timing device
US3272191A (en) * 1965-03-04 1966-09-13 Walker Brooks Engine spark control for reducing smog
US3547089A (en) * 1967-04-06 1970-12-15 Ind De Brenets Et D Etudes S I Carburation device for internal combustion engines for automobile vehicles
US3559666A (en) * 1969-08-18 1971-02-02 Brooks Walker Governor mounted in a generator

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177776A (en) * 1970-02-27 1979-12-11 Toyota Jidosha Kogyo Kabushiki Kaisha Ignition system for internal combustion engines
US3871341A (en) * 1970-12-21 1975-03-18 Optimizer Control Corp Speed controlled ignition retarder
US3776205A (en) * 1971-07-29 1973-12-04 Nissan Motor Ignition timing control system
US3882739A (en) * 1971-11-17 1975-05-13 Daimler Benz Ag Drive unit with an internal combustion engine and with an automatic change-speed transmission connected in the output thereof
US3783846A (en) * 1971-11-30 1974-01-08 Gen Motors Corp Internal combustion engine ignition spark vacuum advance system
US3799134A (en) * 1971-12-14 1974-03-26 Volkswagenwerk Ag Combustion engine with quick arrangement for its exhaust gas cleaning device during cold or idle run
US3810451A (en) * 1971-12-17 1974-05-14 Gen Motors Corp Ignition spark vacuum advance system
US3865089A (en) * 1972-01-21 1975-02-11 Bosch Gmbh Robert Method and system to reduce polluting emission from internal combustion engines
US3913539A (en) * 1972-04-20 1975-10-21 Acf Ind Inc Thermo switch arrangement for control of an internal combustion engine
US3824972A (en) * 1972-08-11 1974-07-23 Gen Motors Corp Ignition spark vacuum advance system
US4096843A (en) * 1973-06-18 1978-06-27 Ethyl Corporation Starting system
US3978831A (en) * 1973-07-03 1976-09-07 Toyota Jidosha Kogyo Kabushiki Kaisha Control device for a vacuum advancer
US4077373A (en) * 1973-12-11 1978-03-07 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control device for an internal combustion engine
US4068632A (en) * 1974-12-25 1978-01-17 Fuji Jukogyo Kabushiki Kaisha Internal combustion engine
US4149499A (en) * 1974-12-26 1979-04-17 Honda Giken Kogyo Kabushiki Kaisha Vacuum controlled ignition timing apparatus for internal combustion engine
US4158349A (en) * 1975-12-11 1979-06-19 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control system for an internal combustion engine
US4094282A (en) 1976-02-25 1978-06-13 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control apparatus for engine during warm-up
US4140092A (en) * 1976-04-16 1979-02-20 Air Quality Products, Inc. Control system for internal combustion engine
US4133324A (en) * 1976-07-07 1979-01-09 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control for engine
USRE30599E (en) * 1976-07-07 1981-05-05 Honda Giken Kogyo Kabushiki Kaisha Ignition timing control for engine
EP0138143A3 (de) * 1983-10-14 1986-05-28 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Vorrichtung zur Zündverstellung im Leerlauf einer Brennkraftmaschine
EP0226915A3 (en) * 1985-12-23 1988-08-17 Fiat Auto S.P.A. A device for reducing the polluting emissions of a heat engine

Also Published As

Publication number Publication date
JPS5018533B1 (enrdf_load_stackoverflow) 1975-06-30
FR2054040A5 (enrdf_load_stackoverflow) 1971-04-16
SE355214B (enrdf_load_stackoverflow) 1973-04-09
DE1933507B2 (de) 1972-12-07
DE1933507A1 (de) 1971-01-14
GB1305235A (enrdf_load_stackoverflow) 1973-01-31

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