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GB2018067A - Timing method and device - Google Patents

Timing method and device

Info

Publication number
GB2018067A
GB2018067A GB7906996A GB7906996A GB2018067A GB 2018067 A GB2018067 A GB 2018067A GB 7906996 A GB7906996 A GB 7906996A GB 7906996 A GB7906996 A GB 7906996A GB 2018067 A GB2018067 A GB 2018067A
Authority
GB
United Kingdom
Prior art keywords
timing
pulses
time
pulse
leading edge
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
GB7906996A
Other versions
GB2018067B (en
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 US05/892,447 external-priority patent/US4158305A/en
Priority claimed from US05/892,222 external-priority patent/US4141242A/en
Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB2018067A publication Critical patent/GB2018067A/en
Application granted granted Critical
Publication of GB2018067B publication Critical patent/GB2018067B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means
    • 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
    • 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
    • G01M15/09—Testing internal-combustion engines by monitoring pressure in fluid ducts, e.g. in lubrication or cooling parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The invention relates to apparatus for and a method of dynamically timing an apparatus such as an internal combustion engine which method includes cyclically generating reference pulses (K), and at least first and second timing pulses (L, M) the time between which is to be measured. The number of pulses of the reference signal in a generating cycle is counted and the time between a leading edge (N) of the first timing pulse (L) and a leading edge (P) of the preceding reference pulse (Q), measured. This time is divided by the period of the reference pulse to produce a first timing fraction. The time between a leading edge (R) of the second timing pulse (M) and a leading edge (S) of the preceding reference pulse (T) is measured and this time divided by the period of the reference pulse to produce a second timing fraction. The number of whole reference pulses (K) between the leading edges (N, R respectively) of the first and second timing pulses is counted, the first timing fraction subtracted from the count and the second timing fraction added to the count thereby producing a timing measurement between the first and second timing pulses (L, M) in terms of reference signal pulses (K). <IMAGE>
GB7906996A 1978-03-31 1979-02-28 Timing method and device Expired GB2018067B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/892,447 US4158305A (en) 1978-03-31 1978-03-31 Method for dynamically timing an apparatus
US05/892,222 US4141242A (en) 1977-06-07 1978-03-31 Apparatus for dynamically timing a diesel engine

Publications (2)

Publication Number Publication Date
GB2018067A true GB2018067A (en) 1979-10-10
GB2018067B GB2018067B (en) 1982-05-19

Family

ID=27129005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7906996A Expired GB2018067B (en) 1978-03-31 1979-02-28 Timing method and device

Country Status (2)

Country Link
JP (1) JPS54135930A (en)
GB (1) GB2018067B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144935A (en) * 1983-08-06 1985-03-13 Bosch Gmbh Robert Device for measuring the time between two events
EP0242994A3 (en) * 1986-04-25 1988-04-13 General Motors Corporation Engine top dead centre locating method
EP2546657A1 (en) * 2011-07-15 2013-01-16 Askey Technology (Jiangsu) Ltd. Method and system for measuring speed.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57108425A (en) * 1980-12-26 1982-07-06 Hino Motors Ltd Detecting method of fuel injection timing in diesel engine
JPS59160855U (en) * 1983-04-14 1984-10-27 日産自動車株式会社 Diesel engine fuel injection timing detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144935A (en) * 1983-08-06 1985-03-13 Bosch Gmbh Robert Device for measuring the time between two events
EP0242994A3 (en) * 1986-04-25 1988-04-13 General Motors Corporation Engine top dead centre locating method
EP2546657A1 (en) * 2011-07-15 2013-01-16 Askey Technology (Jiangsu) Ltd. Method and system for measuring speed.

Also Published As

Publication number Publication date
JPH0262703B2 (en) 1990-12-26
JPS54135930A (en) 1979-10-22
GB2018067B (en) 1982-05-19

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee