GB1398090A - Internal combustion engine ingition timing devices - Google Patents

Internal combustion engine ingition timing devices

Info

Publication number
GB1398090A
GB1398090A GB5255171A GB5255171A GB1398090A GB 1398090 A GB1398090 A GB 1398090A GB 5255171 A GB5255171 A GB 5255171A GB 5255171 A GB5255171 A GB 5255171A GB 1398090 A GB1398090 A GB 1398090A
Authority
GB
United Kingdom
Prior art keywords
ignition
transistor
stable
meter
input
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
Application number
GB5255171A
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.)
BLMC Ltd
Original Assignee
British Leyland Motor Corp Ltd
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 British Leyland Motor Corp Ltd filed Critical British Leyland Motor Corp Ltd
Priority to GB5255171A priority Critical patent/GB1398090A/en
Publication of GB1398090A publication Critical patent/GB1398090A/en
Expired 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
    • H01T13/58—Testing
    • H01T13/60—Testing of electrical properties
    • 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
    • F02P17/02—Checking or adjusting ignition timing
    • F02P17/04—Checking or adjusting ignition timing dynamically

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)

Abstract

1398090 Testing I C engines BRITISH LEYLAND MOTOR CORP Ltd 1 Nov 1972 [12 Nov 1971] 52551/71 HeadingGlU The invention provides method and apparatus for measuring ignition timing of a spark ignition internal combustion engine by providing first signals corresponding to the instant that the rotation of the engine corresponds to an arbitrary datum angle, second signals corresponding to the instant of the ignition spark and sensing and displaying the phase difference between the first and second signals. NAND gates 11, 12 are crosscoupled to provide a bi-stable circuit whose output 13 is connected to the positive supply 15 via a meter 14 and resistance 16. Pulses occurring at 45 degrees before T.D.C. are derived from a conventional pick-up and fed via pulse shaping transistor 19 to the first input 17 of the bi-stable. The output 13 changes, causing current to be drawn through the meter. Ignition pulses are detected by a toroidal coil wound around the low tension lead of the ignition coil and are passed via transistor 24 to the second input 22 of the bi-stable causing it to reset. The current pulses through the meter are averaged by the meter inertia to provide a measure of the timing which is displayed as an angle relative to T.D.C. After the input pulse from transistor 19, diode 33 becomes reverse biased and capacitor 31 begins to charge. Transistor 34 thus begins to conduct reducing the voltage or bi-stable 30 input. If no ignition pulse is received from transistor 24, the bi-stable is automatically reset, before the next reference signal input pulse.
GB5255171A 1971-11-12 1971-11-12 Internal combustion engine ingition timing devices Expired GB1398090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5255171A GB1398090A (en) 1971-11-12 1971-11-12 Internal combustion engine ingition timing devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5255171A GB1398090A (en) 1971-11-12 1971-11-12 Internal combustion engine ingition timing devices

Publications (1)

Publication Number Publication Date
GB1398090A true GB1398090A (en) 1975-06-18

Family

ID=10464347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5255171A Expired GB1398090A (en) 1971-11-12 1971-11-12 Internal combustion engine ingition timing devices

Country Status (1)

Country Link
GB (1) GB1398090A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2259990A (en) * 1991-09-25 1993-03-31 Thomson Consumer Electronics Testing printed circuit boards

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2259990A (en) * 1991-09-25 1993-03-31 Thomson Consumer Electronics Testing printed circuit boards

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee