US2518427A - Engine power analyzer - Google Patents

Engine power analyzer Download PDF

Info

Publication number
US2518427A
US2518427A US748286A US74828647A US2518427A US 2518427 A US2518427 A US 2518427A US 748286 A US748286 A US 748286A US 74828647 A US74828647 A US 74828647A US 2518427 A US2518427 A US 2518427A
Authority
US
United States
Prior art keywords
engine
switch
sweep
cycle
cylinder
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 - Lifetime
Application number
US748286A
Other languages
English (en)
Inventor
Jr John E Lindberg
Clifford L Sackett
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.)
LINDBERG JR
Original Assignee
LINDBERG JR
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 to NL76862D priority Critical patent/NL76862C/xx
Application filed by LINDBERG JR filed Critical LINDBERG JR
Priority to US748286A priority patent/US2518427A/en
Priority to GB13038/48A priority patent/GB653912A/en
Priority to FR966225D priority patent/FR966225A/fr
Application granted granted Critical
Publication of US2518427A publication Critical patent/US2518427A/en
Priority to DES20346A priority patent/DE945796C/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02P17/02—Checking or adjusting ignition timing
    • F02P17/04—Checking or adjusting ignition timing dynamically
    • F02P17/08—Checking or adjusting ignition timing dynamically using a cathode-ray oscilloscope
    • 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
    • G01M15/12—Testing internal-combustion engines by monitoring vibrations

Definitions

  • This invention relates to improvements in apparatus and methods including means for analyzing power conditions of prime movers having particular reference to internal combustion engine analyzers for determining faults and operating conditions thereof in order to effectively maintain the operation of such engines at maximum power output and efficiency.
  • this invention permits the operation of internal combustion engines to better advantage, it has ⁇ special value when used to analyze. the operation of aircraft engines either singly or in multiple units, so as to determine their 1 proper operation and capabilities.
  • this inspection may be useless, for the technician may find even aftersuch inspection in search of a remedy that the difficulty is actually in some other component, for example, in the magneto or in the engine harness rather than in the spark plugs.
  • it may be necessary to test the harness by means of a high tension voltage leakage check or a low tension continuity check.
  • these spark plugs maywarrant inspection in a high pressure flh'amber for cracked porcelain, fouling, etc.
  • the present invention discloses in a preferred embodiment quick, accurate, portable, and airborne means for determining the operating condition of each component of the ignition system of an aircraft engine without disturbing the engines electrical wiring, or in any way affecting its performance while in flight.
  • the present apparatus provides continuous analysis of complete aincraft power plants either on the ground and/or in flight.
  • the analyzer which includes pictorial indicating means enables an aircraft flight engineer to obtain a complete, visual and overall picture of the optime during flight.
  • the indicator By means of the indicator,
  • predetermined electrical delineations or characizing patterns are observed representing conditions of engine vibration, ignition system performance, mixture distribution, engine and magneto synchronization, engine roughness and, when desired, hydraulic and/or electrical associated accessories.
  • the night engineer may detect, locate and identify mal,-
  • the prima object, therefore, of the presentinvlention is Ato provide simple and complete means 'for analyzing all types of engine faults and for detecting imperfect performance in either single engines or in multiple engine combinationsof power plants.
  • Another object of this invention is to allow for the detection and location of engine ignition faults.
  • a further object of the invention is to detect and locate fuel injection, carburetor or air induction system failures.
  • a still further object of the invention is to make possible means for checking the timing and synchronization of all magnetos on an internal comy sired engine cycle position so as to avoid hydraulic lock following shut down of the engine and/or to place the crankshaft in proper cyclic position to permit various maintenance adjustments to be made.
  • Still another object of the invention is to make possible remote detection of engine roughness.
  • Yet another object of the invention is to make possible detection and location of detonation in any cylinder of the power plant.
  • a further object of the invention is to determine the place of failure or misadjustment of a valve system of an engine.
  • Fig. l is a schematic wiring diagram of a power plant analyzer system illustrative of a, preferred embodiment of the present invention
  • Figs. 2 and 3 are illustrations of the faces of the condition selector and cylinder cycle selector switches used in the present embodiment of the invention
  • Fig. 3A is a cross sectional view of the cylinder cycle selector switch
  • Fig. 4 illustrates characteristic patterns formed on the indicator of the engine analyzer. forl vai*- iousengine conditions;l and v Fig. 5 is a vibration diagram exhaust valve'closing. v
  • the novel-power plant analyzer nses a cathode ray tube indicator to plot the primary magneto-voltage or vibration pickup voltage of a crafts engines as the ordinate of a v graph and plots'timingfdegrees of the engine as the abscissa of the same graph.
  • the abscissa of the graph is -at all times synchronized with the actual rotational position of the engine crankshaft by means of a. trip action sweep generator circuit controlled by means of individual engine driven switches. se'.
  • Fig. 1 there is illustrated a preferred embodiment of the engine power analyzer as used in an aircraft having four eighteen-cylinder engines with dual ignition, although it will be apparent that the invention may be applied with advantage to any cyclically operable power plant.
  • the dual ignition system is indicated schematically in the drawing as right and left magnetos. However, an explanation of the invention in conjunction with left magneto 20 is deemed sumcient to disclose its manner of operation with any conventional ignition system.
  • Magneto 2D is a standard Well-known unit. The type shown is diagrammatic of the rotating permanent magnet type.
  • the distributor 25 is driven by engine and magneto gearing at one-half engine speed. Rotation of the permanent magnet induces current ow in the primary coil 23 when the breaker points 22 are closed. At a timed point of maximum current flow in the primary winding 23 the breaker points 22 are opened inducing a high voltage in the secondary coil winding 24 causing a high voltage current flow across the gap of the distributor 25 and across the gap of the spark plug 26 'selected by the distributor.
  • spark plug 26 spark plug leads 21, and distributor 25, as well as the condition of breaker points 22 and breaker point condenser 28 will all effect the voltages which appear initially across primary coil 23 and subsequently thereacross by reection.
  • both the primary and secondary coils 23 and 24, respectively, are wound about a, common core.
  • this type of winding may not be required since the voltages induced in thesecondary coil donot necessarily require a common core relationship or connection.
  • having a screen 33 on which a voltage vs. timegraph of a chosen phase of engine function may -be studied, for example, detonation.
  • Avoltage which is indicative of the studied condition appears as a vertical deviation that repres/ents an ordinate of the graph.
  • 'I'he abscissa of this graph is a horizontal type sweep generated as hereinafter discussed.
  • a multiple selector point engine driven switch 32 whose rotation may be conveniently converted into time or degrees of engine crank shaft rotation, is individually provided for each engine of the power plant.
  • Engine driven switch 32 may be mounted at each engine on the spare tachometer drive or other convenient point. and is. as stated, driveny at one-half engine speed; i. e., one complete engine switch cycle per engine cycle. Switch 32 may further be conveniently designed so as to have as many selector points I--I3 as there are cylinders for the engine. e
  • selector points i-Il will be arranged in cylinder ilring order and are so geared and timed to the engine under observation so as to make effective contact once with each selector point corresponding to a cylinder at the same I dead center of its cylinder power stroke.
  • Engine driven switch 32 is used to trigger a.
  • a horizontal grid of engine timing degrecs can be Vprovided on the screen 30 of the cathode-ray tube as shown in Fig. 4.
  • 'Ihis grid may also provide a vertical scale calibrated in voltage.
  • Fig. 5 an alternate method ofjproviding a reference horizontal grid scale is shown.
  • a 720 vibration pickup pattern is shown for a selected cylinder.
  • 'I'he cycle selector has been placed at exhaust valve closing; therefore the pattern is initiated with the pattern oi exhaust valve closin'g.
  • This engine driven switch 32 is connected to section 33 of another switch.
  • Section 33 is the cycle selecting portion of a lcoaxialtype, multiunit, cylinder cycle selector switch 34 (more full shown in Figs. 3 and 3A).
  • the cycle selecting portion 33 of switch 34 selects the point in the engine timing diagram at which the cathode ray tube horizontal sweep will l be initiated and therefore determines theinitial point of the timing diagram to appear on the screen.
  • the cycle selector ⁇ portion 33 of switch 34 selects the cylinder ignition patternit is desired to study as indicated by the cycle selector pointer.
  • the cylinder (vibration pickup) selecting portion 35 of switch 34 selects any chosen cylinder vibration pickup for observation, and the cycle selecting portion 33 of switch 34 then determines the portion of the engine cycle diagram to appear on the screen 39.
  • the engine driven switch 32 and the cycle selector switch 33 bothfhave their segments numbered in ring order of the engine and corresponding numbered points are connected as shownin Fig. 1.y i
  • a condition selector switch 40 also a multiunit type of switch, is used' to select for observation the desired engine of the aircraft and the condition for which the performance of the engine is to be tested and analyzed.
  • condition selector switch 40 is connected to any desired magneto primary through t0 ground. In each of the electrical circuits connecting condition selector switch 40 to the primary of a magimmediately prior to ignition in the selected cylinder may bedetermined and chosen.
  • a protective resistor 42 which is usually placedat each magneto grounding switch 43 in' the flight control panel of an aircraft. These resistors are important in that they protect the engines of the power plant from being affected in any way by any possible fault, including a complete electrical short circuit developed in the analyzer.
  • the analyzer is essentially a voltage measuringsystem operating at avery highimpedance, it is not appreciably affected by the series protective resistor which is usually about 3,000 ohms.
  • the magneto primary voltage is applied directly through resistor 42 to the upper vertical deflection plate 48 of the cathode ray tube.
  • the lower kvertical deection plate 49 of the cathode ray tube is here shown las being grounded.
  • condition selector switch lll which properly selects the condition desired to be analyzed and it is the cylinder cycle switch 3B which determines the cylinder and ⁇ phase of the cylinder cycle for which the selected condition is to be tested.
  • a voltage pattern indicative of such condition and of such cyclic portion of a selected cylinder is, by means of these switches placed upon a cathode ray tube whose horizontal sweep is synchronizecl and triggered by its associated engine driven switch v32.
  • the sweep circuit constants are adjusted so as toV alter the sweep duration a-nd thus enable the several patterns for the individual cylinders to be read thereon.
  • condition selector switch has been divided into separate sections according to the power plant function desired to be studied.
  • the switch has four sections marked respectively: Ignition, Sync (synchronization), Vib (vibration analysis) and Special (external analysis).
  • Thepresent engine power analyzer includes the use of vibration or detonation pickups such as 50, 5l for all or part of the cylinders of the alrcraft engine.
  • vibration or detonation pickups such as 50, 5l for all or part of the cylinders of the alrcraft engine.
  • Such pickups are now known in the art, a preferred form being shown in the application to Lancor, Serial No. 517,657.
  • These pickups are connected to condition selector switch 40 through the cylinder selector portion 35 of the cylinder cycle switch 34. This provides means for selecting any particular vibration pickup for vibration analysis and for placing its voltage output on.the indicator screen for characterization study.
  • the vibration pickups may be capacitively coupled to'the wires connecting cycle selecnumber of cylinders as shown in Fig. 1 so that ⁇ the. synchronizing pulse engine driven switch pulse will not blank an important section of the vibration pickup pattern.
  • the corresponding connections are made between the cylinder (vibration pickup) selector switch 35 and the conductors at the switch ⁇ 33 to thus complete the com nection from each vibration pickup to its corresponding switch section 35.
  • separate direct conductors could be run from each cylinder vibration pickup to its corresponding point on the switch 35.
  • the extreme versatility and range of the power analyzer may be evident from the many other operating conditions that may be predeterminedly selected for study in accordance with the switch positions on both the condition selector switch 4D and the cylinder cycle selector switch 34. In this way many operational difculties may be preliminarily located and often anticipated prior to actual occurrence.
  • the characteristic patterns for both magnetos of any engine may be placed for comparison purposes upon the screen of the cathode ray tube indicator.
  • the sweep of the cathode ray tube indicator may be calibrated in terms -of degrees, this comparison may be e'iectively determined as a differential in degrees in operating conditions of both magnetos.
  • of the condition selection switch is adapted so that it may connect either one or both of the magneto contacts L, R. If the switch connects both contacts L, R, the left and right magnetos will have their characteristic ignition patterns placed on ythe indicator screen 39 simultaneously.
  • valve operation is known to be satisfactory, it is substantially certain that the'lack of combustion in the presence of ignition in a fuel injection engine is caused by injector failure.
  • the cathode ray tube horizontal sweep may be locked with the A engine as standard.y By placingignition energy from any other engine switch such as D on the vertical deiiecting plates of the cathode ray tube the synchronization between these engines can be checked.
  • each of the aircraft engines may be synchronized very accurately and simply against A engine as standard.
  • make it possible for the iiight or ground crew to position any engine in any chosen crankshaft engine cycle position. This enables an aircraft crew always to position the engine to that point which is least likely to rel sult in hydraulic lock in the engine when left Y idle for some length of time.
  • the procedure used is to place the cylinder cycle selector switch 3l in the engine cycle position at which it is desired to leave the engine and then turn the engine around manually or by means of the starter until a horizontal sweep appears on the screen.
  • This procedure can also be of use as a position indicating device to permit the engine to be turned to certain desired cyclic positions while doing maintenance work on the engine.
  • the cyclic position of the engine can always be checked by rotating the cylinder cycle selector switch 34 until the indicator tube sweeps and then reading the position of the cycle selector switch.
  • condition selector switch 40 the cylinder vibration characteristics of any engine may be selected for analysis; by means of the cylinder selector portion 35 of the cylinder cycle selector switch any cylinder vibration pick-up on that engine may be studied.
  • the analyzer is provided ⁇ with a cylinder cycle timing ,disc 35 which invibration pattern appears on the screen, as shown in Fig. 5 started on the left by the vibration energy of the exhaust valve closing.
  • the cycle selector can be pressed to engage a lock with the cylinder selector 35, as shown in Fig. 3A, and the two selector switches turned in locked phase relation to allow successive study on the screen of the same condition and the identical phase of the cycle in each of the cylinders in their firing order.
  • external jack points and 90a are provided on the condition selector switch 40 marked "special to choose and analyze the time function curve of these units. From electrical accessories and circuits, representative voltage energy is 'applied to the vertical deflecting plates of the indicator. For hydraulic accessories the pressure to an electric pickup is used to provide a voltage that can be applied to the vertical deflection plates of the indicator. The resulting pressure or voltage vs. time curves show existing accessory faults.
  • An ignition system analyzer for an internal combustion engine including a cathode ray tube, vertical and horizontal deflection means for the electron beam in said tube, means to impress signals from all spark plugs of the engine seriatim on said vertical deflection means, a ysweep voltage generating device to impress deflecting voltages on said horizontal deflection means, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle.
  • An ignition system analyzer for an internal combustion engine including a cathode ray tube, vertical and horizontal deiiection means for the electron beam in said tube, means to impress signals fromall spark plugs of the engine seriatim on said vertical deflection means, a sweep voltage generating device to impress deflecting voltages on said horizontal deiiection means, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle, said last-recited means comprising a potential source adapted when connected to the sweep circuit to initiate its operation, a, multiple contact switch having a contact for each engine Il' L appreciationcylinder arranged in cylinder firing order, a wiper y arm for said :switch-connected to said potential source and arranged to wipe each contact dur-l second switch connected to said sweep circuit,
  • An ignition system analyzer for an internal combustion engine including a cathode ray tube, vertical and horizontal deflection means for the electron beam in said tube, means to impress signals from all spark plugs of the engine seriatim on said vertical deflection means, a sweep voltage generating device to impress deflecting voltages on said horizontal deflection means, the time constant of said sweep generating device being such that a spark plug ring is completed during the electron beam trace, means to vary the time constant of the 'sweep generating device whereby an engine cycle is completed during the electron beam trace, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle, said last-recited means comprising a potential source adapted when connected to the sweep circuit to initiate its operation, a multiple contact switch having a contact for each engine cylinder arranged in cylinder firing order, a, wiper arm for said switch connected to said potential source and arranged to Wipe each contact during each engine cycle, a second switch having contacts corresponding to and connected to the contacts of the first switch,
  • a vibration analyzer for an internal combustion engine having a vibration pickup device mounted on each cylinder thereof, said analyzer inclding a cathode ray tube, vertical and horizontal deflection means for the electron beam in said tube, means to impress signals from the vibration pickup devices seriatim on said verticall deflection means, a sweep voltage generating device to impress deecting voltages on said horizontal deflection means. and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle.
  • a vibration analyzer for an internal combustion engine having a vibration pickup device mounted on each cylinder thereof, said analyzer including a cathode ray tube, vertical and horizontal deflection means for the electron beam in said tube, means to impress signals from the vibration pickup devices seriatim on said vertical deflection means, a sweep voltage generating device to impress deflecting voltages on said horizontal deflection means, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle, said last-recited means comprising a potential source adapted when connected to the sweep circuit to initiate its operation, a multiple contact switch having a contact for each engine cylinder arranged in cylinder ilring order, a wiper arm for said switch connected to said potential source and arranged to wipe each contact during each engine cycle, a second switch having contacts corresponding to and connected to the contacts of the first switch, a wiper arm for said second switch connected to said sweep circuit, and means selectively to engage the wiper arm of the second switch with any of its contacts.
  • a vibration analyzer for an internal combustion engine4 having-a vibration pickup device mounted on eachcylinder thereof, said analyzer including a cathode ray tube, vertical and horizontal deection meansfor theelectronbeam in said tube, means to imDrSsSignaIs from the vibration pickup devices seriatimon said vertical deflection means, a sweep voltage generating device to impress deilecting voltages on said horizontal deflection means, the time constant of said sweep generating device being such that a pre determined fraction of an engine cycle is com-I pleted during the electron beam trace, means to vary the time constant of the sweep generating device whereby an engine cycle is completed during the electron beam trace, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle, said last-recited means comprising a pOtential source adapted when connected to the sweep circuit to initiate its operation, a multiple contact switch having a contact for each engine cylinder arranged in cylinder ilring order, a wiper arm for said switch connected to said potential source
  • a vibration analyzer for a cyclically operable engine having a vibration pickup device mounted thereon said analyzer including a cathode ray tube, ilrst coordinate and second coordinate deilection means for the electron beam in said tube, means to impress signals from the vibration pickup device on one of said deflection means, a sweep voltage generating device to impress deflecting voltages on the other of said deflection means, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle.
  • a performance analyzer for a cyclically operable engine including a cathode ray tube, rst coordinate and second coordinate deflection means for the electron beam in said tube, means to impress signals from the ring meansY of the engine on one of said deflection means, a sweep voltage generating device to impress deilecting voltages on the other of said deflection means, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle.
  • a performance analyzer for a cyclically operable engine including a cathode ray tube, rst coordinate and second ⁇ coordinate deflection means for the electron beam in said tube, engine driven means to impress signals from the firing means of the engine on one of said deflection means, a sweep voltage generating device to im- 'press deilecting voltages on the other of said deilection means, and engine driven means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle.
  • An ignition system analyzer for an internal combustion engine including a cathode ray tube, rst coordinate and second coordinate deflection means for the electron beam in said tube, means to impress signals from all spark plugs of the engine seriatim on one of the deflection means, a sweep voltage generating device to impress deflecting voltages on the other deflection means, the time constant of the sweep generating device il; being such that a spark plug firing is completed during the electron beam trace, means to va the time constant of the sweep generating device whereby an engine cycle is completed during the electron beam trace, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle.
  • a vibration analyzer for an internal combustion engine having a vibration pickup device mounted on each cylinder thereof, said analyzer including a cathode ray tube, first coordinate and second coordinate deflection means for the electron Ibeam in said tube, means to impress signals from the vibration pickup devices seriatim on one of the deflection means, a sweep voltage generating device to impress deflecting voltages on the other deflection means, the time constant of the sweep generating device being such that a predetermined fraction of an engine cycle is completed during the electron beam trace, means to Avary the time constant of the sweep generating device whereby an engine cycle is completed during the electron beam trace, and means to initiate Athe operation of the sweep generating device selectively at any desired point in an engine cycle.
  • a performance analyze for an internal combustion engine having a. plurality of signal pickup devices mounted thereon, said analyzer including a cathode ray tube, first coordinate and second coordinate deflection means for the electron beam in said tube, means to impress signals from the pickup devices seriatim on one of the deflection means, a sweep voltage generating device to impress deflecting voltages on the other deflection means, the time constant of the sweep generating device being such that a predetermined fraction of an engine cycle is completed during the electron beam trace, means to vary the time constant of the sweep generating device ywhereby an engine cycle is completed during the electron beam trace, vand means to initiate the operation lof the sweep generating device seleci tively at any desired point in an engine cycle.
  • means comprising engine driven means to transmit a sweep initiating signal at a predetermined point in the combustion cycle of each engine cylinder, and means selectively to apply said initiating signals to the sweep generating device.
  • An ignition system analyzer for an internal Y combustion engine including a cathode ray tube.
  • first coordinate and second coordinate deflection means for theelectron beam in said tube means to impress signals from all spark plugs of the engine seriatim on one ofthe deflection means.
  • a sweep voltage generating device to impress deilecting voltages on the other deflection means, the time constant of the sweep generating device being such that a spark plug firing is completed during the electron beam trace, means to vary the time constant of the sweep ⁇ generating device whereby an engine cycle is completed during the electron beam trace, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle, said last recited means comprising engine driven means. to transmit a sweep initiating signal at a predetermined point in the combustion cycle of each engine cylinder, and means selectively to apply said initiating signals to the sweep generating device.
  • An ignition system analyzer including a cathode ray tube, first coordinate and second coordinate deilection means for the electron beam in said tube. means to impress signals from the ignition system on one of said deflection means, a sweep voltage generating device to impress deflecting voltages on the other of said deflection means, and means to initiate the operation of the sweep generating device selectively at any desired point in an ignition system cycle.
  • a performance analyzer for an engine having signal pickup means mounted thereon said analyzer including a cathode ray tube.
  • first coordinate and second coordinate deflection means for the electron beam in said tube means to impress signals from the signal pickup means on one of said deflection means, a sweep voltage generating device to impress deilecting voltages on the other of said deflection means, and means to initiate the operation of the sweep generating device selectively at any desired point in an engine cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Engines (AREA)
US748286A 1947-05-15 1947-05-15 Engine power analyzer Expired - Lifetime US2518427A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL76862D NL76862C (enrdf_load_stackoverflow) 1947-05-15
US748286A US2518427A (en) 1947-05-15 1947-05-15 Engine power analyzer
GB13038/48A GB653912A (en) 1947-05-15 1948-05-12 Improvements in or relating to electrical apparatus for indicating cyclically varying phenomena in an internal combustion power plant
FR966225D FR966225A (fr) 1947-05-15 1948-05-14 Appareil indicateur de phénomènes à variation cyclique dans un groupe moteur à combustion interne
DES20346A DE945796C (de) 1947-05-15 1950-10-03 Mit einer Kathodenstrahlroehre arbeitende Pruefeinrichtung fuer Brennkraftmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US748286A US2518427A (en) 1947-05-15 1947-05-15 Engine power analyzer

Publications (1)

Publication Number Publication Date
US2518427A true US2518427A (en) 1950-08-08

Family

ID=25008801

Family Applications (1)

Application Number Title Priority Date Filing Date
US748286A Expired - Lifetime US2518427A (en) 1947-05-15 1947-05-15 Engine power analyzer

Country Status (5)

Country Link
US (1) US2518427A (enrdf_load_stackoverflow)
DE (1) DE945796C (enrdf_load_stackoverflow)
FR (1) FR966225A (enrdf_load_stackoverflow)
GB (1) GB653912A (enrdf_load_stackoverflow)
NL (1) NL76862C (enrdf_load_stackoverflow)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651195A (en) * 1950-02-21 1953-09-08 Ibm Apparatus for indicating variable conditions in machines
US2679746A (en) * 1949-10-31 1954-06-01 Phillips Petroleum Co Detonation analyzer
US2736192A (en) * 1956-02-28 ryerson etal
DE945796C (de) * 1947-05-15 1956-07-19 John Emery Lindberg Jun Mit einer Kathodenstrahlroehre arbeitende Pruefeinrichtung fuer Brennkraftmaschinen
US2787760A (en) * 1952-12-19 1957-04-02 Sperry Rand Corp Automotive engine analyzer
US2842956A (en) * 1953-12-28 1958-07-15 Pure Oil Co Apparatus for detecting uncontrolled combustion within internal combustion engines
US2867766A (en) * 1955-05-25 1959-01-06 Sperry Rand Corp Engine analyzer system
US2959732A (en) * 1954-10-05 1960-11-08 Jr John E Lindberg Engine analyzer employing radiofrequency oscillations
US2974274A (en) * 1955-12-13 1961-03-07 Lindberg Secondary-emission cathode-ray tube and engine analyzer employing the same
US2985011A (en) * 1956-07-16 1961-05-23 Walker Brooks Micro-timer
US3056918A (en) * 1955-10-14 1962-10-02 Lindberg Engine analyzer employing cathoderay tube
US3289461A (en) * 1963-12-05 1966-12-06 Phillips Petroleum Co Detonation meter
US3540262A (en) * 1967-07-10 1970-11-17 Sinclair Research Inc Knock and rumble detector for internal combustion engines
US4091656A (en) * 1977-05-12 1978-05-30 Avco Corporation Detonation analyzer for piston engine
USRE29810E (en) * 1967-01-06 1978-10-24 Applied Power Inc. Analyzer for multi-cylinder internal combustion engine having means for identifying individual cylinders
US20100127894A1 (en) * 2008-11-24 2010-05-27 Honeywell International Inc. Magneto sensor for an aircraft ignition system
CN108051217A (zh) * 2017-11-30 2018-05-18 四川泛华航空仪表电器有限公司 航空发动机点火激励器在线故障检测方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875402A (en) * 1956-11-09 1959-02-24 Heyer Ind Inc Trace brightening circuit
AT397579B (de) * 1982-05-12 1994-05-25 List Hans Einrichtung zur kontrolle des ventilspiels

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2082030A (en) * 1936-05-26 1937-06-01 Rca Corp Phase indicator
US2085203A (en) * 1935-08-21 1937-06-29 Socony Vacuum Oil Co Inc Engine indicator
US2133437A (en) * 1933-03-30 1938-10-18 Dodds Edwin Mathieson Apparatus for indicating the variation of one quantity relatively to another quantity
US2355363A (en) * 1942-09-29 1944-08-08 Allen B Dumont Lab Inc Cathode-ray ignition analyzer
US2366355A (en) * 1942-12-22 1945-01-02 Rca Corp Indicating device
US2430154A (en) * 1943-06-26 1947-11-04 Rca Corp Oscillograph timing circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB598360A (en) * 1944-01-10 1948-02-17 Sperry Gyroscope Co Inc Improvements in and relating to vibration pick-up devices and to systems and apparatus utilising them
NL76862C (enrdf_load_stackoverflow) * 1947-05-15 1954-08-16

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2133437A (en) * 1933-03-30 1938-10-18 Dodds Edwin Mathieson Apparatus for indicating the variation of one quantity relatively to another quantity
US2085203A (en) * 1935-08-21 1937-06-29 Socony Vacuum Oil Co Inc Engine indicator
US2082030A (en) * 1936-05-26 1937-06-01 Rca Corp Phase indicator
US2355363A (en) * 1942-09-29 1944-08-08 Allen B Dumont Lab Inc Cathode-ray ignition analyzer
US2366355A (en) * 1942-12-22 1945-01-02 Rca Corp Indicating device
US2430154A (en) * 1943-06-26 1947-11-04 Rca Corp Oscillograph timing circuit

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736192A (en) * 1956-02-28 ryerson etal
DE945796C (de) * 1947-05-15 1956-07-19 John Emery Lindberg Jun Mit einer Kathodenstrahlroehre arbeitende Pruefeinrichtung fuer Brennkraftmaschinen
US2679746A (en) * 1949-10-31 1954-06-01 Phillips Petroleum Co Detonation analyzer
US2651195A (en) * 1950-02-21 1953-09-08 Ibm Apparatus for indicating variable conditions in machines
US2787760A (en) * 1952-12-19 1957-04-02 Sperry Rand Corp Automotive engine analyzer
US2842956A (en) * 1953-12-28 1958-07-15 Pure Oil Co Apparatus for detecting uncontrolled combustion within internal combustion engines
US2959732A (en) * 1954-10-05 1960-11-08 Jr John E Lindberg Engine analyzer employing radiofrequency oscillations
US2867766A (en) * 1955-05-25 1959-01-06 Sperry Rand Corp Engine analyzer system
US3056918A (en) * 1955-10-14 1962-10-02 Lindberg Engine analyzer employing cathoderay tube
US2974274A (en) * 1955-12-13 1961-03-07 Lindberg Secondary-emission cathode-ray tube and engine analyzer employing the same
US2985011A (en) * 1956-07-16 1961-05-23 Walker Brooks Micro-timer
US3289461A (en) * 1963-12-05 1966-12-06 Phillips Petroleum Co Detonation meter
USRE29810E (en) * 1967-01-06 1978-10-24 Applied Power Inc. Analyzer for multi-cylinder internal combustion engine having means for identifying individual cylinders
US3540262A (en) * 1967-07-10 1970-11-17 Sinclair Research Inc Knock and rumble detector for internal combustion engines
US4091656A (en) * 1977-05-12 1978-05-30 Avco Corporation Detonation analyzer for piston engine
US20100127894A1 (en) * 2008-11-24 2010-05-27 Honeywell International Inc. Magneto sensor for an aircraft ignition system
CN108051217A (zh) * 2017-11-30 2018-05-18 四川泛华航空仪表电器有限公司 航空发动机点火激励器在线故障检测方法
CN108051217B (zh) * 2017-11-30 2019-09-17 四川泛华航空仪表电器有限公司 航空发动机点火激励器在线故障检测方法

Also Published As

Publication number Publication date
GB653912A (en) 1951-05-30
DE945796C (de) 1956-07-19
FR966225A (fr) 1950-10-04
NL76862C (enrdf_load_stackoverflow) 1954-08-16

Similar Documents

Publication Publication Date Title
US2518427A (en) Engine power analyzer
US2355363A (en) Cathode-ray ignition analyzer
US4684896A (en) Testing method for ignition systems of internal combustion engines in motor vehicles
US4379263A (en) Engine analyzers
US3650149A (en) Engine ignition and power analyzer
US2366355A (en) Indicating device
US3572103A (en) Analyzer for multi-cylinder internal combustion engine having means for identifying individual cylinders
US4643023A (en) Vibration testing apparatus
US2608093A (en) Test apparatus for internalcombustion engines
US2787760A (en) Automotive engine analyzer
US2622441A (en) Internal-combustion engine power analyzer
US2607215A (en) Multiple mixing circuit for electronic detonation pickups
US2941396A (en) Electronic engine analyzer
US3035438A (en) Test apparatus for internal combustion engines
US5189907A (en) Internal combustion engine mapping apparatus and method
US3101611A (en) Analyzer for internal combustion engines
US3005948A (en) Engine analyzer
US2225381A (en) Electric pressure indicator for internal combustion engines
US2471968A (en) Indicating device
USRE31656E (en) Engine ignition and power analyzer
US3677075A (en) Method for the detection and classification of defects in internal combustion engines
US4135154A (en) CRT Display of condition in cylinders of internal combustion engine
Winch et al. A method for identifying preignition
CA1050112A (en) Ignition analyzer time base
US4091656A (en) Detonation analyzer for piston engine