US3916863A - Electrical signal generating device for use in combustion engines - Google Patents

Electrical signal generating device for use in combustion engines Download PDF

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Publication number
US3916863A
US3916863A US403877A US40387773A US3916863A US 3916863 A US3916863 A US 3916863A US 403877 A US403877 A US 403877A US 40387773 A US40387773 A US 40387773A US 3916863 A US3916863 A US 3916863A
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US
United States
Prior art keywords
pole pieces
group
rotor
stator
rotor means
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
US403877A
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English (en)
Inventor
Gerd Hohne
Jorg Issler
Gerhard Sohner
Leo Steinke
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Priority claimed from DE19722251834 external-priority patent/DE2251834C3/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of US3916863A publication Critical patent/US3916863A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/20—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar machine
    • 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
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil
    • 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
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil
    • F02P7/0675—Electromagnetic pick-up devices, e.g. providing induced current in a coil with variable reluctance, e.g. depending on the shape of a tooth
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
    • H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets

Definitions

  • a first group of pole pieces is provided on the rotor or stator and these are equi-angularly spaced about the same projecting on radii which extend outwardly from the axis of rotation.
  • a second group of pole pieces are provided on the stator or rotor, spaced angularly about the same and including at least two sets each of which is composed of a second plurality of pole pieces which is identical with the first plurality.
  • the pole pieces of the first group are all simultaneously juxtaposed with one each of the pole pieces of one of the sets when the rotor is in one of its angular positions, and they are all simultaneously juxtaposed with one each of the pole pieces of the other set when the rotor is in the other of its angular positions.
  • the angular distance through which the rotor travels in its direction of rotation from its one to its other angular position is different from the angular distance which it travels in the same direction to return from the other to its one position.
  • the present invention relates generally to an electrical signal generating device for use in combustion engines, and in particular to such a device which is particularly useable for controlling operating conditions, for instance to initiate ignition signals.
  • an object of the present invention to provide an improved electrical signal generating device for use in combustion engines which makes it possible to control operating conditions, particularly ignition signals, in multi-cylinder combustion engines the pistons of which do not all simultaneously reach one of their respective dead center positions.
  • Another object of the invention is to provide such a device which is reliable in its operation and is relatively uncomplicated in its construction.
  • an electrical signal generating device for use in combustion engines which briefly stated, comprises stator means, and rotor means coaxial with the stator means and adapted for connection with the combustion engine to be rotated by the same in one direction relative to the stator means to at least two angular positions.
  • a first group composed of a plurality of pole pieces which are equi-angularly spaced about one of the means is provided, and these pole pieces project therefrom on radii which extend outwardly from the axis of rotation of the rotor means.
  • a second group of pole pieces is also provided, being angularly spaced about the other of the means and including at least two sets each of which is composed of a second plurality of pole pieces which is identical with the first plurality. All of the pole pieces of the first group are simultaneously juxtaposed with one each of the pole pieces of one of the sets when the rotor means is in its one angular position, and all of the pole pieces of the first group are simultaneously juxtaposed with one each of the pole pieces of the other set when the rotor means is in the other of its angular positions. Furthermore, the angular distance through which the rotor means travels in the 2 aforementioned one direction from its one to its other angular position is different from the angular distance through which it travels to return from the other to its one position.
  • FIG. 1 is a fragmentary vertical section illustrating one embodiment of the invention
  • FIG. 2 is a diagrammatic top-plan view of the stator and rotor of the embodiment of FIG. 1;
  • FIG. 3 is a view similar to FIG. 2 but illustrating a further embodiment of the invention in a top-plan view of the stator and rotor thereof;
  • FIG. 4 is a fragmentary sectioned detail view illustrating a detail in accordance with the invention.
  • reference numeral 1 identifies a stator which is of magnetically conductive material and composed of a cupped body 2 and a group 3 of pole pieces 4, 5, 6 which project from the edge which bounds the open side of the cupped body 2.
  • the transverse bottom wall of the body 2 is provided at its center with an opening 7, and coaxial with the same is a central bore 8' of a supporting sleeve 8 which extends into the body 2 and is also of magnetically conductive material.
  • the end of the sleeve 8 which faces away from the opening 7 is provided with a flange 8".
  • a shaft 9 is tumably mounted in the opening 7 and the bore 8, and this shaft 9 is connected with the non-illustrated combustion engine, so as to be rotated in one direction as the crankshaft of the combustion engine turns over.
  • a rotor 10 also composed of magnetically conductive material is mounted on the shaft 9 for rotation with the same. It is of circular configuration and provided on its circumference with a group 1 I of radially projecting pole pieces 12, I3, 14, 15 and 16, 17. These pole pieces, are, in the illustrated embodiment, arranged in form of two sets, one of which is composed of the pole pieces 12, 14, I6, and the other of which is composed of the pole pieces 13, I5 and I7. It will be noted that the number of pole pieces of each set is equal to the number of pole pieces on the stator I, so that the total number of pole pieces on the rotor 10 is a whole-number multiple of the total number of pole pieces on the stator 1.
  • a magnetically non'conductive mounting sleeve H mounts the rotor 10 with the shaft 9 for rotation with the latter, and is in turn surrounded by an axially magnetized permanent magnet M, the north pole N of which contacts the rotor 10 and the south pole S contacts the flange 8' of the sleeve 8.
  • the latter carries 3 on its outer circumference a signal generating winding G which ismounted on a support R and which supplies at its terminals A a voltage which can be used as a triggering signal (for instance for triggering an ignition incident) when the pole pieces 12, 13, 14, 15, 16, 17 of the group 11 rotate past the pole pieces 4, 5, 6 of the group 3. It is hardly necessary to point out that the generation of such a voltage is not in itself novel.
  • the present invention overcomes this limitation of the prior art, without having to resort to elaborate auxiliary equipment in that the number of pole pieces in the group 11 is a whole number multiple of the number of pole pieces in the group 3, as already pointed out earlier. This means that during each complete revolution of the shaft 9, each pole piece of the group 3 is temporarily located once adjacent each pole piece of the group 11. Moreover, the pole pieces 4, 5, 6 of the group 3 are located on imaginary radii extending outwardly from the axis of rotation of the shaft 9 the radii being so located that the pole pieces 4, 5, 6, are equiangularly spaced. The angles at which they are spaced are identified with the symbol 7 in FIG. 2.
  • the arrangement of the pole pieces of the group 11 is such that each of the pole pieces 4, 5, 6 of the group 3 will be simultaneously juxtaposed in one angular position of the rotor relative to the stator l, with a pole piece of one set of the group 11, namely with one of the pole pieces 12, 14 and 16. In the other angular position each of the pole pieces 4, 5, 6 will be simultaneously juxtaposed with one of the pole pieces 13, 15, 17.
  • the angle a through which the shaft 9 must turn from the position at which the pole pieces 4, 5, 6 are juxtaposed with the pole pieces 12, 14, 16, to the position at which the pole pieces 4, 5, 6 are juxtaposed with the pole pieces l3, l5, 17 is selected to differ by the desired timing distance (45 versus 75) from the angle B through which the shaft 9 must turn until the pole pieces 4, 5, 6 are again juxtaposed with the pole pieces 12, 14, 16.
  • a distributor electrode 19 is provided which rotates with the shaft 9 and is mounted in an insulating body 18. During each juxtaposition of the pole pieces 4, 5, 6 with the pole pieces 12, 14, 16 or of the pole pieces 4, 5, 6 with the pole pieces l3, 15, 17, the electrode 19 is located opposite one of the fixed electrodes 20, 21, 22, 23, 24, and 25 which are shown in FIG. 3. The ignition voltage is then supplied via a contact electrode 26 which is constantly in contact with the distributor electrode 19, and transferred from the latter to one of the stationary electrodes 20-25 which is associated with the respective spark plug. It is self-evident that this arrangement, which acts in the manner of a distributor, can be housed together with the novel signal generating device in a housing 27 of a conventional ignition distributor 28.
  • the rotor 10 can also be operatively associated with the shaft 9, via a non-illustrated centrifugal adjuster well known in the art, and the stator 1 can be provided with a non-illustrated vacuum adjuster also known in the art, for varying the timing of the ignition in accordance with principles known the prior art.
  • FIG. 3 further shows that it is possible to arrange the group 3 of pole pieces 4, 5, 6 that is the group having the smaller total number of pole pieces, on the rotor 10, instead of on the stator 1, and conversely to arrange the group 11 of pole pieces 12-17 on the stator 1 instead of the rotor 10.
  • the rotor 10 can be produced in a very simple manner by being made of plate-shaped form, for instance in form of a polygon, in FIG. 3 illustrated as a triangle as clearly shown.
  • FIG. 4 finally, shows that the free end portion 29 of the pole pieces provided on the rotor 10 can be bent over in the illustrated manner, so as to extend in direction parallel or substantially parallel to the axis of rotation of the shaft 9, and to be located on a projection of the respective free end 30 of the pole pieces on the stator 1. This affords a still stronger variation of the magnetic flux and assures a most satisfactory value of the triggering signal which is derived at the output leads A.
  • the device according to the pres,- ent invention has been shown as used for triggering ignition signals, it is equally well possible to use it for other purposes, for instance to control the injection of fuel into the cylinders of the combustion engine.
  • a combination comprising stator means; rotor means coaxial with said stator means and adapted for connection with said crankshaft of said combustion engine to be rotated by the same in one direction relative to said stator means to at least two angular positions; a first group composed of a first plurality of pole pieces which are equi-angularly spaced about one of said means and project therefrom on radii which extend outwardly from the axis of rotation of said rotor means; and a second group of pole pieces angularly spaced about the other of said means and including at least two sets each composed of a second plurality of pole pieces which is identical with said first plurality so that the total number of said pole pieces of said second group is a wholemumber multiple of the total number of said pole pieces of said first group, each of the pole pieces of one of said sets being simultaneously juxtaposed with one each of the pole pieces of said first group and all of the
  • pole which are provided on said rotor means have radially outwardly extending main portions and free end portions which extend in at least substantial parallelism with said axis of rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
US403877A 1972-10-21 1973-10-05 Electrical signal generating device for use in combustion engines Expired - Lifetime US3916863A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722251834 DE2251834C3 (de) 1972-10-21 Elektrischer Signalgeber zur Auslösung von Betriebsvorgängen, insbesondere Zündvorgängen, bei Brennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3916863A true US3916863A (en) 1975-11-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
US403877A Expired - Lifetime US3916863A (en) 1972-10-21 1973-10-05 Electrical signal generating device for use in combustion engines

Country Status (8)

Country Link
US (1) US3916863A (enrdf_load_stackoverflow)
JP (1) JPS4973537A (enrdf_load_stackoverflow)
AU (1) AU6240673A (enrdf_load_stackoverflow)
BR (1) BR7308194D0 (enrdf_load_stackoverflow)
FR (1) FR2204070B1 (enrdf_load_stackoverflow)
GB (1) GB1436610A (enrdf_load_stackoverflow)
IT (1) IT998792B (enrdf_load_stackoverflow)
SE (1) SE396796B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512502A1 (fr) * 1981-09-09 1983-03-11 Mitsubishi Electric Corp Dispositif d'allumage pour un moteur a combustion interne
US4407258A (en) * 1980-12-04 1983-10-04 Robert Bosch Gmbh Ignition and fuel injection pulse generating system for odd-numbered multi-cylinder internal combustion engine
US4426974A (en) 1982-03-01 1984-01-24 Allied Corporation Digital timing circuit for a rotating machine
US4519362A (en) * 1983-06-06 1985-05-28 Nippondenso Co., Ltd. Rotational position detecting apparatus for internal combustion engines
US4552119A (en) * 1984-12-11 1985-11-12 Gerry Martin E Magnetic pulse timer
WO1990006517A1 (en) * 1988-12-09 1990-06-14 Caterpillar Inc. Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft
US4972332A (en) * 1987-07-28 1990-11-20 Caterpillar Inc. Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft
US6184480B1 (en) * 1998-07-30 2001-02-06 Matsushita Electric Industrial Co., Ltd. Revolving operation electronic component and electronic appliance using the same
CN102761218A (zh) * 2012-08-02 2012-10-31 龙文凯 一种新型高效发电机
CN103401392A (zh) * 2013-07-29 2013-11-20 龙文凯 一种磁通路式新型发电机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428843A2 (fr) * 1978-06-16 1980-01-11 Sev Marchal Capteur utilisable notamment pour l'allumage des moteurs de vehicules automobiles
DE2917404C2 (de) * 1979-04-28 1987-05-07 Robert Bosch Gmbh, 7000 Stuttgart Induktiver Steuersignalgeber zur Auslösung von Zündvorgängen in Brennkraftmaschinen
FR2602280B1 (fr) * 1986-08-01 1988-10-07 Ducellier & Cie Capteur inductif pour l'emission d'un signal destine a declencher un dispositif d'allumage pour moteur a combustion interne et dispositif d'allumage comportant un tel capteur inductif
WO1991001448A1 (en) * 1989-07-17 1991-02-07 Christopher Colin Hirst Dual ignition system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073879A (en) * 1961-05-13 1963-01-15 Bosch Gmbh Robert High voltage ignition arrangement for internal combustion engines
US3139081A (en) * 1962-06-22 1964-06-30 Motorola Inc Distributor advance mechanism
US3575578A (en) * 1968-06-18 1971-04-20 Ducellier & Cie Ignition distributor with improved cam timing means
US3576183A (en) * 1969-10-31 1971-04-27 Kokusan Denki Co Ignition system for a two-cycle engine
US3678913A (en) * 1969-07-25 1972-07-25 Bosch Gmbh Robert Current generator and electronic ignition circuit
US3744466A (en) * 1970-07-31 1973-07-10 Bosch Gmbh Robert Ignition distributor with control generator for internal combustion engines
US3783314A (en) * 1972-12-20 1974-01-01 Ford Motor Co Signal generating mechanism

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073879A (en) * 1961-05-13 1963-01-15 Bosch Gmbh Robert High voltage ignition arrangement for internal combustion engines
US3139081A (en) * 1962-06-22 1964-06-30 Motorola Inc Distributor advance mechanism
US3575578A (en) * 1968-06-18 1971-04-20 Ducellier & Cie Ignition distributor with improved cam timing means
US3678913A (en) * 1969-07-25 1972-07-25 Bosch Gmbh Robert Current generator and electronic ignition circuit
US3576183A (en) * 1969-10-31 1971-04-27 Kokusan Denki Co Ignition system for a two-cycle engine
US3744466A (en) * 1970-07-31 1973-07-10 Bosch Gmbh Robert Ignition distributor with control generator for internal combustion engines
US3783314A (en) * 1972-12-20 1974-01-01 Ford Motor Co Signal generating mechanism

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407258A (en) * 1980-12-04 1983-10-04 Robert Bosch Gmbh Ignition and fuel injection pulse generating system for odd-numbered multi-cylinder internal combustion engine
FR2512502A1 (fr) * 1981-09-09 1983-03-11 Mitsubishi Electric Corp Dispositif d'allumage pour un moteur a combustion interne
US4426974A (en) 1982-03-01 1984-01-24 Allied Corporation Digital timing circuit for a rotating machine
US4519362A (en) * 1983-06-06 1985-05-28 Nippondenso Co., Ltd. Rotational position detecting apparatus for internal combustion engines
US4552119A (en) * 1984-12-11 1985-11-12 Gerry Martin E Magnetic pulse timer
US4972332A (en) * 1987-07-28 1990-11-20 Caterpillar Inc. Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft
WO1990006517A1 (en) * 1988-12-09 1990-06-14 Caterpillar Inc. Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft
JP2721413B2 (ja) 1988-12-09 1998-03-04 キャタピラー インコーポレーテッド 回転軸の速度、角度位置および回転方向を求める装置
US6184480B1 (en) * 1998-07-30 2001-02-06 Matsushita Electric Industrial Co., Ltd. Revolving operation electronic component and electronic appliance using the same
CN102761218A (zh) * 2012-08-02 2012-10-31 龙文凯 一种新型高效发电机
CN103401392A (zh) * 2013-07-29 2013-11-20 龙文凯 一种磁通路式新型发电机
CN103401392B (zh) * 2013-07-29 2015-10-28 深圳市奥波图科技实业有限公司 一种磁通路式发电机

Also Published As

Publication number Publication date
JPS4973537A (enrdf_load_stackoverflow) 1974-07-16
BR7308194D0 (pt) 1974-06-27
DE2251834B2 (de) 1977-04-21
FR2204070B1 (enrdf_load_stackoverflow) 1976-11-19
IT998792B (it) 1976-02-20
AU6240673A (en) 1975-05-15
SE396796B (sv) 1977-10-03
GB1436610A (en) 1976-05-19
FR2204070A1 (enrdf_load_stackoverflow) 1974-05-17
DE2251834A1 (de) 1974-04-25

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