GB1434721A - Spark voltage indicator - Google Patents

Spark voltage indicator

Info

Publication number
GB1434721A
GB1434721A GB180572A GB180572A GB1434721A GB 1434721 A GB1434721 A GB 1434721A GB 180572 A GB180572 A GB 180572A GB 180572 A GB180572 A GB 180572A GB 1434721 A GB1434721 A GB 1434721A
Authority
GB
United Kingdom
Prior art keywords
capacitor
spark
voltage
breakdown
gap
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
GB180572A
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.)
Macdonald R W D
Original Assignee
Macdonald R W D
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 Macdonald R W D filed Critical Macdonald R W D
Priority to GB180572A priority Critical patent/GB1434721A/en
Publication of GB1434721A publication Critical patent/GB1434721A/en
Expired legal-status Critical Current

Links

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
    • F02P17/12—Testing characteristics of the spark, ignition voltage or current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/40—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses
    • 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
    • F02P2017/006—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines using a capacitive sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (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)

Abstract

1434721 Testing spark gaps R W D MACDONALD 16 April 1973 [14 Jan 1972] 1805/72 Heading G1U Spark voltage is measured by connecting a measuring capacitor to the generating system such that the spark power generates a voltage on the capacitor, the peak value of which is measured. In Fig. 1 (not shown) a standard gap is connected to a high voltage line and to earth via a measuring capacitor. When the spark occurs, the breakdown voltage is applied to the capacitor. In Fig. 2 (not shown), a pair of capacitors is connected in parallel with the spark gap, the "earthy" capacitor having a diode across it. At the breakdown of the gap, the "earthy" capacitor receives a charge proportional to the breakdown voltage. For testing I.C. engine ignition systems, the circuit of Fig. 1, in unit 5 calibrates the system with the switches SW1, SW2 in position 1, using the standard gap in switch SW2. With the switches in position 3, the unit 6, (the circuit of Fig. 2) measures the breakdown of spark-plug. In position 2, the extended gap in SW2 allows any insulation breakdown to be detected. Peak voltage indication may be by a chain of neons across a ladder of resistors in parallel to the measuring capacitor, Fig. 6, (not shown) or by using the capacitor voltage to control the current through a Darlington pair Figs. 3, 4 (not shown).
GB180572A 1972-01-14 1972-01-14 Spark voltage indicator Expired GB1434721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB180572A GB1434721A (en) 1972-01-14 1972-01-14 Spark voltage indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB180572A GB1434721A (en) 1972-01-14 1972-01-14 Spark voltage indicator

Publications (1)

Publication Number Publication Date
GB1434721A true GB1434721A (en) 1976-05-05

Family

ID=9728324

Family Applications (1)

Application Number Title Priority Date Filing Date
GB180572A Expired GB1434721A (en) 1972-01-14 1972-01-14 Spark voltage indicator

Country Status (1)

Country Link
GB (1) GB1434721A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570189A2 (en) * 1992-05-12 1993-11-18 Ngk Spark Plug Co., Ltd A spark plug voltage detecting probe device for use in internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570189A2 (en) * 1992-05-12 1993-11-18 Ngk Spark Plug Co., Ltd A spark plug voltage detecting probe device for use in internal combustion engine
EP0570189A3 (en) * 1992-05-12 1994-12-07 Ngk Spark Plug Co A spark plug voltage detecting probe device for use in internal combustion engine.

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Legal Events

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