DE3704290A1 - Adaptor between a microwave sensor and a commercially available spark plug - Google Patents

Adaptor between a microwave sensor and a commercially available spark plug

Info

Publication number
DE3704290A1
DE3704290A1 DE19873704290 DE3704290A DE3704290A1 DE 3704290 A1 DE3704290 A1 DE 3704290A1 DE 19873704290 DE19873704290 DE 19873704290 DE 3704290 A DE3704290 A DE 3704290A DE 3704290 A1 DE3704290 A1 DE 3704290A1
Authority
DE
Germany
Prior art keywords
spark plug
clamping
adapter
adaptor
head sleeve
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.)
Granted
Application number
DE19873704290
Other languages
German (de)
Other versions
DE3704290C2 (en
Inventor
Helmut Kuhrmann
Lorenz-Peter Dr Ing Schmidt
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.)
Airbus Defence and Space GmbH
Original Assignee
Licentia Patent Verwaltungs 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
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19873704290 priority Critical patent/DE3704290C2/en
Publication of DE3704290A1 publication Critical patent/DE3704290A1/en
Application granted granted Critical
Publication of DE3704290C2 publication Critical patent/DE3704290C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/06—Testing internal-combustion engines by monitoring positions of pistons or cranks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more

Abstract

Adaptor between a microwave sensor and a commercially available spark plug, in particular for measurement of the upper dead centre in internal combustion engines, the adaptor consisting of a metal cylinder which has a cavity for receiving the upper part of the spark plug, and of a clamping device which by means of a rotational movement can cause a plurality of clamping rods to experience travel. The lower end of the adaptor is seated with a pressure ring in a sealed fashion on the hexagonal nut of the spark plug. The clamping rods are guided in guide channels in a clamping head sleeve and end above the cavity of the adaptor in the region of the spark plug bore. They have at this end a wedge shape which is complementary to the guide channel, and a toothed segment which protudes through an opening slightly beyond the circumference of the clamping head sleeve. When the clamping rods are made to experience travel, the toothed segments are extended strongly beyond the circumference of the clamping head sleeve, as a result of the wedge shape, and become clamped in the spark plug bore. <IMAGE>

Description

Die Erfindung betrifft einen Adapter nach dem Oberbegriff des Anspruchs 1, wie er aus der DE-OS 33 16 400 bekannt ist. Dort ist ein Adapter zwischen einer Zündkerze und einem Millimeterwellen-Sensor beschrieben, zur Einstrahlung von Millimeterwellenleistung durch die Porzellanisolierung der Zündkerze in den Verbrennungshohlraum von Otto-Motoren, zur Messung des oberen Totpunkts bei gleichzeitigem An­ schluß der Zündspannung zum Betrieb der Zündkerze. Der Adapter greift mit einem Spannkopf um die Sechskantmutter der Zündkerze. The invention relates to an adapter according to the preamble of claim 1, as known from DE-OS 33 16 400 is. There is an adapter between a spark plug and described a millimeter wave sensor, for irradiation of millimeter wave power through the porcelain insulation the spark plug in the combustion cavity of Otto engines, for measuring the top dead center with simultaneous on connection of the ignition voltage to operate the spark plug. The Adapter grips around the hexagon nut with a clamping head the spark plug.  

Neuere Motoren weisen zum Teil verkleinerte Zündkerzen und eine Zündkerzenbohrung mit geringerem Durchmesser auf. Dafür ist der bekannte Adapter zu voluminös.Newer engines have partially reduced spark plugs and a smaller diameter spark plug hole. The known adapter is too bulky for that.

Aufgabe der Erfindung ist es, einen Adapter der eingangs genannten Art anzugeben, der zum sicheren Verspannen in engen Zündkerzenbohrungen geeignet ist und Abstrahlungs­ verluste im Bereich des Zündkerzengehäuses vermeidet. Die Erfindung ist im Patentanspruch 1 gekennzeichnet. Die weiteren Ansprüche beinhalten Ausführungen der Erfindung.The object of the invention is an adapter of the beginning Specify the type specified for secure clamping in narrow spark plug holes is suitable and radiation avoids losses in the area of the spark plug housing. The Invention is characterized in claim 1. The further claims include embodiments of the invention.

Die Erfindung wird im folgenden anhand der Figur, die ein Ausführungsbeispiel zeigt, näher erläutert.The invention is described below with reference to the figure, which is a Embodiment shows, explained in more detail.

Der Adapter 7 besteht aus einer Metallhülse, die einen Hohlraum aufweist zur Aufnahme des oberen Teils einer Zündkerze 9. Nach oben schließt sich eine Spannkopfhülse 12 an, in die das Zündkabel 14 seitlich eintritt. Dieses endet im Hohlraum des Adapters 7 im Zündstecker 10 mit Zünd­ kontakttulpe 11. Ein Millimeterwellen-Sensor 15 ist auf einer Aufnahmeplatte 3 am oberen Ende der Spannkopfhülse 12 befestigt. Ein Hohlleiterzug 13 ist durch den Adapter geführt und endet im Brewsterwinkel bei der Porzellan­ isolierung der Zündkerze. In der Wand des Hohlraums sind ringförmige Nuten 17 als Stromfallen angebracht, um eine Ausbreitung des Millimeterwellensignals in Richtung auf den Hochspannungsanschluß zu verhindern. Soweit entspricht die Anordnung der aus der DE-OS 33 16 400 bekannten. The adapter 7 consists of a metal sleeve which has a cavity for receiving the upper part of a spark plug 9 . At the top there is a clamping head sleeve 12 , into which the ignition cable 14 enters laterally. This ends in the cavity of the adapter 7 in the ignition plug 10 with ignition contact tulip 11 . A millimeter wave sensor 15 is fastened on a mounting plate 3 at the upper end of the clamping head sleeve 12 . A waveguide cable 13 is guided through the adapter and ends at Brewster angle in the porcelain insulation of the spark plug. In the wall of the cavity, annular grooves 17 are made as current traps to prevent the millimeter wave signal from propagating toward the high voltage terminal. So far the arrangement corresponds to that known from DE-OS 33 16 400.

Erfindungsgemäß sitzt nun der Adapter 7 mit seinem unteren Ende mit einem Druckring 8 dicht auf der Sechs­ kantmutter der Zündkerze 9 auf. Abstrahlungsverluste in diesem Bereich werden dadurch vermieden. Zur Gewähr­ leistung eines festen Sitzes wird der Adapter in der Zündkerzenbohrung verspannt. Dazu dienen drei Spann­ stangen 5, die in Führungskanälen in der Spannkopfhülse 12 geführt sind. Sie enden oberhalb des Hohlraums des Adapters im Bereich der Zündkerzenbohrung in einer Keilform 6 mit Zahnsegment, welches im entspannten Zustand durch eine Öffnung leicht über den Umfang der Spannkopfhülse 12 hinaussteht. Die Form der Führungs­ kanäle ist komplementär zur Keilform 6, so daß bei Aus­ übung eines Hubes auf die Spannstangen 5 die Zahnseg­ mente stärker hervortreten und sich in der Zündkerzen­ bohrung verklemmen. Ein Federring 16 dient zur Rück­ holung der Zahnsegmente beim Entspannen.According to the invention, the adapter 7 is now seated with its lower end with a pressure ring 8 tightly on the hex nut of the spark plug 9 . This avoids radiation losses in this area. To ensure a tight fit, the adapter is clamped in the spark plug hole. Three clamping rods 5 are used , which are guided in guide channels in the clamping head sleeve 12 . They end above the cavity of the adapter in the area of the spark plug bore in a wedge shape 6 with a toothed segment, which in the relaxed state projects slightly beyond the circumference of the clamping head sleeve 12 through an opening. The shape of the guide channels is complementary to the wedge shape 6 , so that when practicing a stroke on the tie rods 5, the tooth segments emerge more strongly and become jammed in the spark plug bore. A spring ring 16 is used to bring back the tooth segments when relaxing.

Zur Hubausübung ist ein Drehknopf 1 mit Gewindespindel vorgesehen, welche eine Spannmutter 2 auf oder ab be­ wegt. In dieser sind die Spannstangen 5 mit ihren oberen Enden befestigt. Damit sich die Spannmutter 2 nicht verdreht, ist sie mit Zylinderstiften 4 gesichert, welche in die Aufnahmeplatte 3 gepreßt sind.To exercise the stroke, a rotary knob 1 with a threaded spindle is provided, which moves a clamping nut 2 up or down. In this, the tie rods 5 are attached with their upper ends. So that the clamping nut 2 does not twist, it is secured with cylinder pins 4 , which are pressed into the mounting plate 3 .

Die Handhabung des Adapters ist sehr einfach:The handling of the adapter is very simple:

Er wird in die Zündkerzenbohrung eingeführt, bis der Druckring 8 auf der Sechskantmutter der Zündkerze auf­ sitzt. Dann werden durch Rechtsdrehen des Drehknopfes 1 die Zahnsegmente in der Zündkerzenbohrung verspannt. Beim Entspannen durch Linksdrehen des Drehknopfes holt der Federring 16 die Zahnsegmente in die Ruhestellung zurückIt is inserted into the spark plug bore until the pressure ring 8 is seated on the hexagon nut of the spark plug. Then the toothed segments are clamped in the spark plug bore by turning the rotary knob 1 to the right. When relaxing by turning the rotary knob to the left, the spring ring 16 brings the toothed segments back into the rest position

Claims (4)

1. Adapter zwischen einem Mikrowellen-Sensor und einer handelsüblichen Zündkerze, insbesondere für die Messung des oberen Totpunktes bei Verbrennungsmotoren, bei gleich­ zeitigem Anschluß der Zündspannung zum Betrieb der Zünd­ kerze, wobei der Adapter aus einem Metallzylinder besteht, der einen Hohlraum aufweist zur Aufnahme des oberen Teils der Zündkerze, sowie einer Spannvorrichtung, die durch eine Drehbewegung einen Hub auf mehrere Spannstangen ausüben kann, gekennzeichnet durch folgende Merkmale:
  • - das untere Ende des Adapters (7) sitzt mit einem Druckring (8) dicht auf der Sechskantmutter der Zünd­ kerze (9) auf;
  • - die Spannstangen (5) sind in Führungskanälen in einer Spannkopfhülse (12) geführt und enden oberhalb des Hohlraums des Adapters (7) im Bereich der Zündkerzen­ bohrung; sie weisen an diesem Ende eine Keilform (6) auf, komplementär zum Führungskanal, sowie ein Zahn­ segment, das durch eine Öffnung leicht über den Umfang der Spannkopfhülse (12) hinaussteht;
  • - bei Ausübung eines Hubes auf die Spannstangen (5) treten die Zahnsegmente, bedingt durch die Keilform (6), stark über den Umfang der Spannkopfhülse (12) hinaus und verklemmen sich in der Zündkerzenbohrung.
1. Adapter between a microwave sensor and a commercially available spark plug, in particular for measuring top dead center in internal combustion engines, with simultaneous connection of the ignition voltage for operating the spark plug, the adapter consisting of a metal cylinder which has a cavity for receiving the upper part of the spark plug, as well as a tensioning device, which can exert a stroke on several tension rods by a rotary movement, characterized by the following features:
  • - The lower end of the adapter ( 7 ) sits with a pressure ring ( 8 ) on the hex nut of the spark plug ( 9 );
  • - The tension rods ( 5 ) are guided in guide channels in a clamping head sleeve ( 12 ) and end above the cavity of the adapter ( 7 ) in the area of the spark plug bore; they have at this end a wedge shape ( 6 ), complementary to the guide channel, and a tooth segment, which projects slightly through an opening beyond the circumference of the clamping head sleeve ( 12 );
  • - When exerting a stroke on the tension rods ( 5 ), the toothed segments occur due to the wedge shape ( 6 ), strongly beyond the circumference of the clamping head sleeve ( 12 ) and jam in the spark plug bore.
2. Adapter nach Anspruch 1, dadurch gekennzeichnet, daß ein Federring (16) zur Rückholung um die Zahnsegmente gelegt ist.2. Adapter according to claim 1, characterized in that a spring ring ( 16 ) is placed for retrieval around the tooth segments. 3. Adapter nach Anspruch 1, dadurch gekennzeichnet, daß die Spannstangen (5) mit ihrem oberen Ende an einer Spann­ mutter (2) befestigt sind, auf welche mittels eines Dreh­ knopfs (1) mit Gewindespindel ein Hub ausübbar ist.3. Adapter according to claim 1, characterized in that the clamping rods ( 5 ) are attached at their upper end to a clamping nut ( 2 ), on which a stroke can be exercised by means of a rotary knob ( 1 ) with a threaded spindle. 4. Adapter nach Anspruch 3, dadurch gekennzeichnet, daß die Spannmutter (2) mittels Zylinderstiften (4) gegen Verdrehen gesichert ist.4. Adapter according to claim 3, characterized in that the clamping nut ( 2 ) is secured against rotation by means of cylindrical pins ( 4 ).
DE19873704290 1987-02-12 1987-02-12 Adapter between a microwave sensor and a commercially available spark plug Expired - Fee Related DE3704290C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873704290 DE3704290C2 (en) 1987-02-12 1987-02-12 Adapter between a microwave sensor and a commercially available spark plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873704290 DE3704290C2 (en) 1987-02-12 1987-02-12 Adapter between a microwave sensor and a commercially available spark plug

Publications (2)

Publication Number Publication Date
DE3704290A1 true DE3704290A1 (en) 1988-08-25
DE3704290C2 DE3704290C2 (en) 1996-01-18

Family

ID=6320782

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873704290 Expired - Fee Related DE3704290C2 (en) 1987-02-12 1987-02-12 Adapter between a microwave sensor and a commercially available spark plug

Country Status (1)

Country Link
DE (1) DE3704290C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10034124A1 (en) * 2000-07-13 2002-01-24 Audi Ag Test sensor mount for combustion engine tests uses flexible tube to position sensor
DE102013104743B3 (en) * 2013-05-08 2014-08-07 Porep Gmbh Adapter for connecting a sensor detecting a combustion parameter of an engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703825A (en) * 1968-10-02 1972-11-28 Merlo Angelo L Combustion microwave diagnostic system
US4403504A (en) * 1981-08-13 1983-09-13 General Motors Corporation Engine testing microwave transmission device
US4437338A (en) * 1980-10-01 1984-03-20 Jodon Engineering Associates, Inc. Spark plug microwave adapter
DE3236939A1 (en) * 1982-10-06 1984-04-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arrangement for determining the top dead centre of combustion engine pistons
DE3316400A1 (en) * 1983-05-05 1984-11-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt ADAPTER BETWEEN A MILLIMETER SHAFT SENSOR AND A COMMERCIAL SPARK PLUG, IN PARTICULAR TO TEST MEASUREMENT FOR OTTO ENGINES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703825A (en) * 1968-10-02 1972-11-28 Merlo Angelo L Combustion microwave diagnostic system
US4437338A (en) * 1980-10-01 1984-03-20 Jodon Engineering Associates, Inc. Spark plug microwave adapter
US4403504A (en) * 1981-08-13 1983-09-13 General Motors Corporation Engine testing microwave transmission device
DE3236939A1 (en) * 1982-10-06 1984-04-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arrangement for determining the top dead centre of combustion engine pistons
DE3316400A1 (en) * 1983-05-05 1984-11-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt ADAPTER BETWEEN A MILLIMETER SHAFT SENSOR AND A COMMERCIAL SPARK PLUG, IN PARTICULAR TO TEST MEASUREMENT FOR OTTO ENGINES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10034124A1 (en) * 2000-07-13 2002-01-24 Audi Ag Test sensor mount for combustion engine tests uses flexible tube to position sensor
DE10034124B4 (en) * 2000-07-13 2012-07-05 Audi Ag Device for measuring a physical quantity during the test run of an internal combustion engine
DE102013104743B3 (en) * 2013-05-08 2014-08-07 Porep Gmbh Adapter for connecting a sensor detecting a combustion parameter of an engine

Also Published As

Publication number Publication date
DE3704290C2 (en) 1996-01-18

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: TELEFUNKEN SYSTEMTECHNIK GMBH, 7900 ULM, DE

8127 New person/name/address of the applicant

Owner name: DEUTSCHE AEROSPACE AG, 8000 MUENCHEN, DE

8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: DAIMLER-BENZ AEROSPACE AKTIENGESELLSCHAFT, 80804 M

D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licenses declared (paragraph 23)
8327 Change in the person/name/address of the patent owner

Owner name: DAIMLERCHRYSLER AEROSPACE AKTIENGESELLSCHAFT, 8099

8327 Change in the person/name/address of the patent owner

Owner name: EADS DEUTSCHLAND GMBH, 80995 MUENCHEN, DE

8327 Change in the person/name/address of the patent owner

Owner name: EADS DEUTSCHLAND GMBH, 85521 OTTOBRUNN, DE

8339 Ceased/non-payment of the annual fee