EP1388869A2 - Circuit de test pour bobine d'allumage et procédé pour tester une bobine d'allumage - Google Patents

Circuit de test pour bobine d'allumage et procédé pour tester une bobine d'allumage Download PDF

Info

Publication number
EP1388869A2
EP1388869A2 EP03017711A EP03017711A EP1388869A2 EP 1388869 A2 EP1388869 A2 EP 1388869A2 EP 03017711 A EP03017711 A EP 03017711A EP 03017711 A EP03017711 A EP 03017711A EP 1388869 A2 EP1388869 A2 EP 1388869A2
Authority
EP
European Patent Office
Prior art keywords
ignition coil
contact
switching element
test circuit
voltage
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
EP03017711A
Other languages
German (de)
English (en)
Other versions
EP1388869A3 (fr
EP1388869B1 (fr
Inventor
Detlef Klemmer
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.)
ThyssenKrupp Krause GmbH
Original Assignee
Johann A Krause Maschinenfabrik 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 DE10239114A external-priority patent/DE10239114A1/de
Application filed by Johann A Krause Maschinenfabrik GmbH filed Critical Johann A Krause Maschinenfabrik GmbH
Publication of EP1388869A2 publication Critical patent/EP1388869A2/fr
Publication of EP1388869A3 publication Critical patent/EP1388869A3/fr
Application granted granted Critical
Publication of EP1388869B1 publication Critical patent/EP1388869B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • 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
    • F02P11/00—Safety means for electric spark ignition, not otherwise provided for
    • F02P11/06—Indicating unsafe conditions
    • 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
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/12—Testing characteristics of the spark, ignition voltage or current
    • 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
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04—Layout of circuits
    • 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
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04—Layout of circuits
    • F02P3/055—Layout of circuits with protective means to prevent damage to the circuit, e.g. semiconductor devices or the ignition coil
    • F02P3/0552—Opening or closing the primary coil circuit with semiconductor devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines

Definitions

  • the invention relates to a test circuit for an ignition coil according to the preamble of Claim 1. It further relates to a method for testing such an ignition coil this test circuit.
  • Ignition coils for internal combustion engines are installed before installing the internal combustion engine in a vehicle, e.g. a passenger car built into the internal combustion engine Condition checked.
  • the testing process is automated and should if possible without human intervention.
  • due to the steadily increasing Cycle times in the manufacture of vehicles a correspondingly quick check required.
  • Ignition coils have a primary and a secondary inductance in a manner known per se on.
  • the ignition process is carried out in series with the primary inductance arranged switching element, e.g. a transistor.
  • the voltage curve over the primary inductance is examined.
  • a direct tap of the So far voltage across the primary inductance was via an input to the ignition coil and a special measuring contact possible. If this measuring contact was not available, you have the measuring contact easily with discrete or not encapsulated ignition coils can create themselves, e.g. by an electrically conductive connection between Primary inductance and switching element was contacted.
  • Today is neither the measurement contact the ignition coil circuit is still available for a corresponding measuring tap accessible so that a direct measurement on the primary inductance is no longer possible.
  • measuring sensors are used to detect the electromagnetic field of the Primary inductance were suitable. These measuring sensors had to be close enough be arranged for primary inductance. This is because of the complex positioning processes time and cost consuming. Because of the design of the internal combustion engines and the arrangement of other components, such as intake manifolds, is multiple positioning the measurement sensors in a sufficient proximity to the measurement Primary inductance not possible at all.
  • the invention is therefore based on the object of a test circuit for testing the Ignition coil while avoiding the disadvantages mentioned above and a method for Check the ignition coil using the test circuit.
  • test circuit with the features of Claim 1 solved.
  • This test circuit is characterized by a between one Supply voltage tap and a first input contact of the to be tested Ignition coil arranged control element with a control contact, one with a second input contact of the ignition coil connected ground tap, one with a Switching contact of the ignition coil connected reference voltage tap and one between first and second input contact arranged measuring arrangement.
  • the advantage of the invention is that the connectivity of the switching element the ignition coil with a reference voltage a permanent switching of the Switching element can be effected.
  • the switching element thus occurs for the intended Measurement does not appear.
  • the voltage across the primary inductance can be applied to the two input contacts of the ignition coil can be picked up during the total time during which the switching element is acted upon by the Reference voltage remains switched through. This is the observability of the electrical Guaranteed conditions at the primary inductance.
  • the ignition coil is checked then by means of the measuring arrangement connected in parallel to the primary inductance. After the triggering of the ignition process, the switching element of the ignition coil is no longer can be used as this is at least during the entire test process must be switched through, the control element is an additional switching element provided that takes over the same function as the switching element and the Trigger pulse.
  • control element between the supply voltage and the Ignition coil is arranged and after triggering the ignition process, the electrical conductive connection to the supply voltage and thus to the vehicle electrical system interrupts, the quality of the measurement itself is improved because previously unavoidable disruptive influences from the vehicle electrical system are virtually "switched off" by the control element.
  • the test circuit also switches the ignition coil, especially one Rod ignition coil, integrated switching element, for example a transistor, protected because it only a defined reference voltage is applied during the measurement. This can e.g. be specified by the manufacturer of the ignition coil. So that is safe asked that damage to the switching element excluded by the test is.
  • the measuring arrangement has a voltage divider with a first and a second Resistance and a measuring device that is parallel to one of the resistors of the Voltage divider is arranged, a defined reduction in the Reach the measuring device applied voltage.
  • the measuring device is now in front Damage is protected or a voltage range is selected in which the Measuring device can be used optimally.
  • a diode for voltage limitation parallel to the voltage divider is advantageous intended. This provides further protection for the measuring device, for example with regard to short-term voltage peaks reached.
  • control element and / or the switching element is realized by a transistor are simple electronic components with sufficient test circuit known characteristic. In addition, transistors are less prone to failure because they are not subject to any mechanical wear.
  • the stated object is achieved according to the invention by the Features of claim 7. It is provided that the supply voltage tap with a supply voltage and the ground tap with ground potential get connected. Next is the reference voltage tap with a reference voltage connected and thus a switching of the switching element of the ignition coil causes. To trigger the ignition pulse, the control contact is made with a control signal applied. This will switch the control element depending on The course of the control signal causes the supply voltage to be above the primary inductance the ignition coil is present. To check the ignition coil, the course of the Voltage across the primary inductance using the measuring arrangement of the test circuit supervised.
  • FIG. 1 shows an ignition coil 1 with a primary inductance 2, one of which is electromagnetic coupled secondary inductance 3 and a switching element 4 in the form of a transistor.
  • the ignition coil 1, which is preferably a pencil ignition coil, comprises one first and second input contacts 5, 6, a first and second output contact 7, 8 and a switch contact 9.
  • the primary inductor 2 and the switching element 4 are there arranged in series between the first and second input contacts 5, 6 such that the primary inductance 2 the first input contact 5 and the switching element 4 the second input contact 6 is facing.
  • the switching element 4, in particular for Forming the switching element 4 serving transistor, is with the ignition coil 1, in particular the pencil ignition coil, installed. Accordingly, the switching element 4 or the transistor Part of the ignition coil 1 or pencil ignition coil, which is thus a common component represent.
  • the secondary inductance 3 is between the first and second output contacts 7, 8 arranged.
  • the switch contact 9 is provided for driving the switching element 4.
  • the ignition coil 1 is connected to a supply voltage at its first input contact 5 and connected to ground at its second input contact 6, the applied one lies Supply voltage always above the primary inductor 2 when the switching element 4 is switched through.
  • the switching element 4 is switched through when it is on the Switching contact 9 is controlled accordingly.
  • the potential disappears on Switch contact 9 the current flow through the primary inductance 2 breaks down, so that the magnetic field of the primary inductance 2 abruptly according to known conditions changes and thus a current flow is induced in the secondary inductance 3.
  • the brief high voltage at the secondary inductance 3 is so high that by means of a connected spark plug, not shown, a spark is generated.
  • the signal at the switch contact 9 thus delivers the ignition pulse.
  • the first input contact is on 5 facing away from the primary inductor 2, a measuring contact 10 is provided or it is such a measuring contact 10 has been created.
  • measuring between second input contact 6 and the measuring contact 10 could e.g. the course of the Voltage at the primary inductance 2 examined over time and in doing so on the Functionality of the ignition coil 1 can be closed.
  • FIG. 2 shows the ignition coil 1 from FIG. 1 without the measuring contact 10.
  • the one shown in FIG Ignition coil 1 therefore corresponds to the ignition coils customary on the market today.
  • the ignition coil 1 is connected to the test circuit. This includes a between a supply voltage tap 11 and the first input contact 5 of the ignition coil 1 arranged control element 12 with a control contact 13. About the Supply voltage tap 11 is the test circuit to a supply voltage 14, e.g. 12V, connected. The test circuit also has one with the second Input contact 6 connected ground tap 15. About the ground tap 15 is the Test circuit connected to ground potential 16. Furthermore, the test circuit has a reference voltage tap 17 connected to the switch contact 9. The test circuit is connected to a reference voltage via the reference voltage tap 17 18 connected. A preferred value of the reference voltage 18 is e.g. 5V because this ensures that even with permanent activation of the switching element 4 this is not damaged. Finally, the test circuit has one between the first and second input contact 5, 6 arranged measuring arrangement 19. This includes a voltage divider 20 with a first and a second resistor 21, 22 and a measuring device 23 arranged parallel to the second resistor 22.
  • the applied reference voltage 18 has the effect that the switching element 4 is permanent is switched through, so that the electrical conditions at the primary inductance of a Measurement are accessible. If the control element 12 is also connected, the applied supply voltage 14 across the primary inductor 2.
  • the control 12 is at the control contact 13 with an alternating, preferably periodic alternating control signal 24 is applied.
  • Has as a signal form for the control signal 24 e.g. a square wave signal with a frequency of 54 Hz was found to be advantageous.
  • the control signal 24 is generated by a frequency generator, not shown, so that e.g. the waveform and / or the frequency of the control signal 24 corresponding to the the respective requirements and needs can be varied.
  • a measuring point which is at Ignition coils 1 previously used are accessible through a separate measuring contact 10 was, but with today's standard ignition coils 1 for a direct measurement neither spatially due to the encapsulated version of the ignition coil 1 still electrically due an intermediate switching element 4 is accessible, thereby accessible made that the switching element 4 by applying an Reference voltage 18 is permanently switched through and thus between the measuring point and an accessible input contact 6 of the ignition coil 1 each significant Potential difference disappears.
  • a control element taking over the function of the switching element 4 12 connected upstream the ignition pulse when acted upon by a control signal 24 triggers.
  • the test circuit thus on the one hand turns into an "interfering" internal switching element 4 deactivated and on the other hand the functionality of the deactivated switching element by a control element 12 belonging to the test circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
EP03017711A 2002-08-05 2003-08-02 Circuit de test pour bobine d'allumage et procédé pour tester une bobine d'allumage Expired - Lifetime EP1388869B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10235848 2002-08-05
DE10235848 2002-08-05
DE10239114A DE10239114A1 (de) 2002-08-05 2002-08-27 Prüfschaltung für eine Zündspule und Verfahren zum Prüfen einer Zündspule
DE10239114 2002-08-27

Publications (3)

Publication Number Publication Date
EP1388869A2 true EP1388869A2 (fr) 2004-02-11
EP1388869A3 EP1388869A3 (fr) 2006-04-26
EP1388869B1 EP1388869B1 (fr) 2007-04-25

Family

ID=30444925

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03017711A Expired - Lifetime EP1388869B1 (fr) 2002-08-05 2003-08-02 Circuit de test pour bobine d'allumage et procédé pour tester une bobine d'allumage

Country Status (3)

Country Link
EP (1) EP1388869B1 (fr)
AT (1) ATE360875T1 (fr)
DE (1) DE50307122D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10356448A1 (de) * 2003-12-03 2005-07-07 Volkswagen Ag Zündspulentester
CN109444548A (zh) * 2018-12-20 2019-03-08 天津斯巴克瑞汽车电子股份有限公司 一种汽车多组输出线圈自动静态测试台及实现方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0344349A1 (fr) * 1988-06-03 1989-12-06 Robert Bosch Gmbh Détection d'un défaut d'allumage dans les moteurs à allumage par étincelles
US5201293A (en) * 1990-11-09 1993-04-13 Robert Bosch Gmbh Method of monitoring the operation of an internal combustion engine
US5438268A (en) * 1990-12-10 1995-08-01 Robert Bosch Gmbh Ignition system for detecting arc voltage of spark plug
US5490489A (en) * 1991-12-05 1996-02-13 Robert Bosch Gmbh Ignition system for an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0344349A1 (fr) * 1988-06-03 1989-12-06 Robert Bosch Gmbh Détection d'un défaut d'allumage dans les moteurs à allumage par étincelles
US5201293A (en) * 1990-11-09 1993-04-13 Robert Bosch Gmbh Method of monitoring the operation of an internal combustion engine
US5438268A (en) * 1990-12-10 1995-08-01 Robert Bosch Gmbh Ignition system for detecting arc voltage of spark plug
US5490489A (en) * 1991-12-05 1996-02-13 Robert Bosch Gmbh Ignition system for an internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10356448A1 (de) * 2003-12-03 2005-07-07 Volkswagen Ag Zündspulentester
CN109444548A (zh) * 2018-12-20 2019-03-08 天津斯巴克瑞汽车电子股份有限公司 一种汽车多组输出线圈自动静态测试台及实现方法

Also Published As

Publication number Publication date
ATE360875T1 (de) 2007-05-15
EP1388869A3 (fr) 2006-04-26
DE50307122D1 (de) 2007-06-06
EP1388869B1 (fr) 2007-04-25

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