US3779218A - Ignition timing change-over device for spark advance mechanism having rotatable governor plate - Google Patents

Ignition timing change-over device for spark advance mechanism having rotatable governor plate Download PDF

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Publication number
US3779218A
US3779218A US00082868A US3779218DA US3779218A US 3779218 A US3779218 A US 3779218A US 00082868 A US00082868 A US 00082868A US 3779218D A US3779218D A US 3779218DA US 3779218 A US3779218 A US 3779218A
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United States
Prior art keywords
engine
switch
starting
voltage source
ignition timing
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Expired - Lifetime
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US00082868A
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English (en)
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S Nambu
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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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
    • F02P5/145—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 electrical means
    • F02P5/155—Analogue data processing
    • F02P5/1558—Analogue data processing with special measures for starting
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • a plunger means is adapted to protrude and rotate the governor plate to an angular position in which an ignition advance occurs during the cold operating conditions of the engine irrespective of the intake manifold vacuum.
  • the plunger means is actuated to hold the governor plate in the advance position during closure of a starting switch.
  • Another embodiment employs a relay and a thermostatically controlled switch to keep the plunger means in the advance position during the engine warm-up operation.
  • a further embodiment comprises a thermostatically operated plunger which is operative to rotate the governor plate through a mechanical linkage during the engine warm-up operation.
  • the method of retarding the ignition timing is disadvantageous in that it adversely affects the engine performance during cold starting of the engine. That is, with the ignition timing initially set to behind the top dead center, great difficulties are experienced in starting the engine at the atmospheric temperatures below --1 5 C.
  • an object of this invention to provide an ignition timing change-over device which is incorporated in the ignition advance unit, whether it may be of pneumatic or centrifugal type, to improve the engine performance during the engine starting.
  • FIG. 1 is a circuit diagram showing, partly diagrammatically, an ignition system according to one embodiment of this invention
  • FIG. 2 is a diagrammatical illustration of the ignition advance accomplished by the system of FIG. 1 during the time when the starting switch is closed;
  • FIG. 3 is view similar to FIG. 1, showing a modification of this invention
  • FIG. 4 is a diagrammatical illustration of the ignition advance attained by the system of FIG. 3 during the engine warm-up operation;
  • FIG. 5 is a fragmentary diagrammatic view showing another modification of this invention.
  • FIG. 6 is a view similar to FIG. 4, but shows a gradual change in the ignition timing to the retarded side effected by the unit shown in FIG. 5.
  • the ignition system as depicted comprises a d.c. voltage source or battery 10, an ignition switch 11, an ignition coil 12, a distributor 13, spark plug wires 14 and spark plugs 15. Also included in the system is a single point breaker 16 having a breaker cam 17 which rotates with the distributed rotor 18 of the distributor 13.
  • the breaker 16 has a set of contact points, one being a movable contact point 19 attached to a contact arm 20 and the other being a stationary contact point 21 connected to ground.
  • the arm 20 is mounted for pivotal movement about a pin 22 in a governor plate 23 to open and close the breaker contact points 19 and 21 by the rotating action of the breaker cam 17.
  • the stationary contact point 21 is also mounted on the governor plate 23.
  • the movable contact arm 20 is shunted by a condenser 24 to ground and connected to the primary side of the ignition coil 12 by way of a resistor 25.
  • the ignition system includes a conventional vacuum advance unit 26 and governor advance unit (not shown).
  • the vacuum advance unit 26 comprises a housing 27 including a diaphragm 28, a diaphragm connecting link bar 29, and a spring 30 held against the diaphragm 28.
  • One end of the diaphragm connecting link bar 29 is operatively connected to a radially extending end 31 of the governor plate 23 of the breaker 16.
  • a conduit 32 connects the vacuum unit 26 to the intake manifold (not shown).
  • a solenoid means 33 Positioned adjacent to the breaker 16 is a solenoid means 33 having a plunger member 34 engaged at its tip with the extending end of the governor plate 23 and adapted to rotate the governor plate 23 in a direction to advance the ignition timing 10 to 18 before the top dead center.
  • the solenoid means 33 along with a starting motor (not shown), is electrically connected to the battery 10 by way of a starting switch 35.
  • Operation of the system is such that when the starting switch 35 is closed to start the engine the plunger member 34 is projected to rotate the governor plate 23 counterclockwise to the angular position which is proper for the engine starting, so that a proper ignition advance is accomplished relative to the normal retarded condition as shown in FIG. 2.
  • the starting switch 35 is opened to deenergize the solenoid means 33, causing the plunger member 34 to retract thereby rotating the governor plate 23 clockwise to the angular position dependent upon the intake manifold vacuum. With the governor plate 23 in the position an ignition retarding is obtained as shown is FIG. 2. It is to be understood that when the plunger member 34 is actuated the governor plate 23 is rotated thereby irrespective of the intake manifold vacuum.
  • FIG. 3 illustrates a modification of the system shown in FIG. 1 although the ignition coil and distributorare not shown for the sake of clarity of illustration.
  • like parts and components are indicated by the same reference numerals as those shown in FIG. 1.
  • a solenoid means 33 is provided that is adapted to rotate the governor plate 23 of the breaker 16 by a plunger member 34 operatively connected thereto.
  • the solenoid means 33 of this arrangement is electrically connected to the battery 10 by way of a relay 37.
  • the relay 37 includes a switch 38 which is normally kept open by spring pressure and a solenoid coil 39 having one end connected to ground and the other to a thermostatically controlled switch 40 which in turn is connected to the battery 10 by way of the ignition switch 11.
  • the thermostatically controlled switch includes a pair of contact members, one of which is of a bimetal plate adapted to warp toward the other contact member, thus coming into contact therewith.
  • the thermostatically controlled switch 40 is so located as to sense the engine temperature, for example, cooling liquid, engine oil, exhaust gases or engine body itself so as to open the relay solenoid circuit when the engine temperature exceeds a predetermined level C.
  • the switch 40 may be so set as to open when the temperature of the liquid increases to C.
  • the ignition switch 11 is closed simultaneously with the closure of the starting switch 35.
  • the solenoid coil 39 of the relay 37 is energized so that the switch 38 connects the solenoid means 33 to the battery 10, causing the plunger 34 to protrude and rotate the governor plate 23 of the breaker 16.
  • the ignition timing is advanced relative to the normal retarded condition during cold starting of the engine.
  • the thermostatically controlled switch 40 opens to de-energize the solenoid coil 39 of the relay 37.
  • the relay switch 38 opens and the solenoid means 33 is deenergized causing the plunger 34 to be retracted.
  • FIG. 4 diagrammatically shows the relationship between the ignition timing and cooling liquid temperature 0.
  • FIG.5 shows another modification of the invention comprising a thermostat 42 of the type in which the plunger 43 gradually protrudes as the temperature sensed thereby increases above 6 C.
  • the of the plunger member 43 is transferred to the governor plate 23 of the breaker 16 through a connecting linkage 44.
  • the connecting linkage 44 comprises an arm member 45 mounted for pivotal movement about a stationary fulcrum 46 and a spring member 47 mounted desirably on the wall of the engine for urging the arm member 45 to rotate in a clockwise direction as viewed in FIG. 5.
  • the plunger member 43 of the thermostat 42 When the cooling liquid temperature, for example, is below 0 C during the engine warm-up, the plunger member 43 of the thermostat 42 is kept in the retracted position and the spring member 47 urges the arm 45 to be rotated clockwise, rotating the governor plate 23 counterclockwise so that the ignition timing is switched to 10 to 18 ahead of the top dead center of the piston.
  • the plunger member 43 when the liquid temperature is increased to 6 C the plunger member 43 is caused gradually to protrude and rotate the arm member 45 counterclockwise against the action of the spring member 47.
  • the governor plate 23 is rotated clockwise to the angular position dependent upon the intake manifold vacuum, thereby retarding the ignition timing as shown in FIG. 6.
  • this invention provides an ignition timing change-over device incorporated in the ignition system to electrically or mechanically control the ignition timing so as to improve the engine performance during the engine starting and warm-up.
  • l.-An ignition timing change-over device designed to provide a normal retarded condition during warm-up operation of an internal combustion engine, which is adapted for use with a spark advance mechanism having a rotatable governor plate, said device comprising, in combination,
  • thermostatically controlled switch electrically connected between said d.c. voltage source and said relay means for opening and closing said relay means, said thermostatically controlled switch being responsive to the engine temperature, whereby, when said engine temperature is below a predetermined value during cold starting of said engine, said thermostatically controlled switch closes said relay means thereby energizing said solinoid means to cause said plunger means to rotate said governor plate for thereby advancing said ignition timing relative to the normal retarded condition to increase engine performance efficiency during said cold starting of said engine.
  • said relay means includes a normally open switch connected in series between said solenoid means and said d.c. voltage source and a solenoid coil connected in series to said d.c. voltage source through said thermostatically controlled switch for closing said normally open switch when the engine temperature is below the predetermined value during starting condition of the engine.
  • thermostatically controlled switch includes a pair of normally closed contact members, one of which is of a bimetal plate adapted to warp toward the other contact member when the engine temperature sensed thereby is below the predetermined value and to break contact with said other contact member when the engine temperature sensed thereby exceeds said predetermined value.
  • an ignition timing change-over device designed to provide a normal retarded condition when cold starting said engine and during warm-up operation thereof, which is adapted for use with said rotatable governor plate, comprising, in combination,
  • a relay means having 1. a normally open switch connected in series to said d.c. voltage source and 2. a solenoid coil connected in series to said d.c.
  • thermostatically controlled switch electrically connected between said solenoid coil of said relay means and said dc. voltage source, said thermostatically controlled switch including a pair of normally closed contact members, one of which pair is of a bimetal plate adapted to warp toward the other contact member when the engine tempera ture sensed thereby is below a predetermined value during engine starting and to break contact with said other contact member when the engine temficiency during cold starting of said engine.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Ignition Timing (AREA)
US00082868A 1969-10-22 1970-10-22 Ignition timing change-over device for spark advance mechanism having rotatable governor plate Expired - Lifetime US3779218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44084541A JPS5037331B1 (enrdf_load_stackoverflow) 1969-10-22 1969-10-22

Publications (1)

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US3779218A true US3779218A (en) 1973-12-18

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US00082868A Expired - Lifetime US3779218A (en) 1969-10-22 1970-10-22 Ignition timing change-over device for spark advance mechanism having rotatable governor plate

Country Status (5)

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US (1) US3779218A (enrdf_load_stackoverflow)
JP (1) JPS5037331B1 (enrdf_load_stackoverflow)
DE (1) DE2051956C3 (enrdf_load_stackoverflow)
FR (1) FR2066348A5 (enrdf_load_stackoverflow)
GB (1) GB1307377A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031869A (en) * 1974-02-18 1977-06-28 Toyota Jidosha Kogyo Kabushiki Kaisha Ignition-timing adjusting system for spark-ignition internal combustion engines
FR2534634A1 (fr) * 1982-10-14 1984-04-20 Ducellier & Cie Dispositif electronique de commande d'allumage d'un moteur a combustion interne, notamment pour vehicules automobiles
US4633834A (en) * 1984-03-16 1987-01-06 Sanshin Kogyo Kabushiki Kaisha Spark timing control device for internal combustion engine
US4957091A (en) * 1987-02-09 1990-09-18 Outboard Marine Corporation Dual schedule ignition system
US5038743A (en) * 1987-02-09 1991-08-13 Outboard Marine Corporation Dual schedule ignition system
US5040519A (en) * 1987-02-09 1991-08-20 Outboard Marine Corporation System to prevent reverse engine operation
US5074263A (en) * 1990-02-02 1991-12-24 Emerson Charles E Stop/start control system for an internal combustion engine
US5345910A (en) * 1993-04-19 1994-09-13 Outboard Marine Corporation Engine ignition system having improved warmup advanced timing control
US20170122232A1 (en) * 2015-10-28 2017-05-04 Cummins Inc. Thermal management via exhaust gas recirculation
US20210340929A1 (en) * 2020-05-01 2021-11-04 John C. Rhoades Reluctor plate controller

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53141742U (enrdf_load_stackoverflow) * 1977-04-12 1978-11-09
DE2945578C2 (de) * 1979-11-10 1982-09-30 Bayerische Motoren Werke AG, 8000 München Vorrichtung zur Verstellung des Zündzeitpunktes einer Brennkraftmaschine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1785902A (en) * 1928-07-05 1930-12-23 Delco Remy Corp Ignition timer
US2809620A (en) * 1956-06-27 1957-10-15 Gen Motors Corp Ignition apparatus
US3057938A (en) * 1961-08-28 1962-10-09 Ingersoll Rand Co Spark ignition control for gas engines
US3301242A (en) * 1964-08-13 1967-01-31 Gen Motors Corp Ignition timing device
US3400698A (en) * 1966-12-22 1968-09-10 Dole Valve Co Vacuum ported switch
US3494338A (en) * 1968-04-17 1970-02-10 Acf Ind Inc Temperature responsive control of a distributor
US3621824A (en) * 1970-05-04 1971-11-23 Ford Motor Co Engine temperature control system
US3876754A (en) * 1964-06-09 1975-04-08 North American Rockwell Preparation of chlorine pentafluoride

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4413444Y1 (enrdf_load_stackoverflow) * 1966-09-19 1969-06-05

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1785902A (en) * 1928-07-05 1930-12-23 Delco Remy Corp Ignition timer
US2809620A (en) * 1956-06-27 1957-10-15 Gen Motors Corp Ignition apparatus
US3057938A (en) * 1961-08-28 1962-10-09 Ingersoll Rand Co Spark ignition control for gas engines
US3876754A (en) * 1964-06-09 1975-04-08 North American Rockwell Preparation of chlorine pentafluoride
US3301242A (en) * 1964-08-13 1967-01-31 Gen Motors Corp Ignition timing device
US3400698A (en) * 1966-12-22 1968-09-10 Dole Valve Co Vacuum ported switch
US3494338A (en) * 1968-04-17 1970-02-10 Acf Ind Inc Temperature responsive control of a distributor
US3621824A (en) * 1970-05-04 1971-11-23 Ford Motor Co Engine temperature control system

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031869A (en) * 1974-02-18 1977-06-28 Toyota Jidosha Kogyo Kabushiki Kaisha Ignition-timing adjusting system for spark-ignition internal combustion engines
FR2534634A1 (fr) * 1982-10-14 1984-04-20 Ducellier & Cie Dispositif electronique de commande d'allumage d'un moteur a combustion interne, notamment pour vehicules automobiles
EP0107560A1 (fr) * 1982-10-14 1984-05-02 DUCELLIER & Cie Dispositif électronique de commande d'allumage d'un moteur à combustion interne notamment pour véhicules automobiles
US4633834A (en) * 1984-03-16 1987-01-06 Sanshin Kogyo Kabushiki Kaisha Spark timing control device for internal combustion engine
US4957091A (en) * 1987-02-09 1990-09-18 Outboard Marine Corporation Dual schedule ignition system
US5038743A (en) * 1987-02-09 1991-08-13 Outboard Marine Corporation Dual schedule ignition system
US5040519A (en) * 1987-02-09 1991-08-20 Outboard Marine Corporation System to prevent reverse engine operation
US5074263A (en) * 1990-02-02 1991-12-24 Emerson Charles E Stop/start control system for an internal combustion engine
US5345910A (en) * 1993-04-19 1994-09-13 Outboard Marine Corporation Engine ignition system having improved warmup advanced timing control
US20170122232A1 (en) * 2015-10-28 2017-05-04 Cummins Inc. Thermal management via exhaust gas recirculation
US10605209B2 (en) * 2015-10-28 2020-03-31 Cummins Inc. Thermal management via exhaust gas recirculation
US20210340929A1 (en) * 2020-05-01 2021-11-04 John C. Rhoades Reluctor plate controller
US11493014B2 (en) * 2020-05-01 2022-11-08 John C. Rhoades Reluctor plate controller

Also Published As

Publication number Publication date
GB1307377A (en) 1973-02-21
JPS5037331B1 (enrdf_load_stackoverflow) 1975-12-02
DE2051956A1 (de) 1971-04-29
FR2066348A5 (enrdf_load_stackoverflow) 1971-08-06
DE2051956B2 (de) 1978-08-17
DE2051956C3 (de) 1979-04-19

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