GB1357392A - Apparatus for monitoring the temperatures at a plurality of monitoring sites - Google Patents

Apparatus for monitoring the temperatures at a plurality of monitoring sites

Info

Publication number
GB1357392A
GB1357392A GB4906371A GB4906371A GB1357392A GB 1357392 A GB1357392 A GB 1357392A GB 4906371 A GB4906371 A GB 4906371A GB 4906371 A GB4906371 A GB 4906371A GB 1357392 A GB1357392 A GB 1357392A
Authority
GB
United Kingdom
Prior art keywords
amplifier
contact
thermocouple
switch
output
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
GB4906371A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1357392A publication Critical patent/GB1357392A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G01K7/021—Particular circuit arrangements
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating or supervising devices
    • F02B77/085—Safety, indicating or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
    • F02B77/086—Sensor arrangements in the exhaust, e.g. for temperature, misfire, air/fuel ratio, oxygen sensors

Abstract

1357392 Measuring temperature electrically SIEMENS AG 21 Oct 1971 [21 Oct 1970] 49063/71 Heading G1N Apparatus for measuring the temperature of the exhaust gas streams from the combustion chambers of an I.C. engine comprises a plurality of thermocouples 1a-n, one per chamber, each connected by a respective amplifier 13 to respective amplifier 13 to respective first input terminals E1 of comparison devices 10a-n and by switches 15 to an average-forming summing amplifier 11, the output signal from which corresponds to the mean exhaust gas temperature and which is connected simultaneously to each of the second input terminals E2 of the comparison devices, whereby when the difference between the average and an individual temperature exceeds a predetermined magnitude this is indicated by device 14 or an alarm is set off. The gain of the amplifier 11 relative to each input is inversely proportional to n, the number of cylinders monitored. The third contact of each switch 15 is connected to the first contact of the next switch so that if a thermocouple fails it is switched out of circuit and the voltage from the adjacent thermocouple is applied to the input terminal which would have been supplied by the failed thermocouple and the first contact of each switch is connected to the amplifier 11 while the second contact goes to El. In an alternative embodiment Fig. 2 (not shown) the third contact of each switch is connected in common with the output terminal of the amplifier so that if a thermocouple fails it is switched out of circuit and the average voltage at the output of amplifier 11 connected in its place. In the Fig. 3 embodiment the inputs 11a. to n of the averaging device 11 are connected through like resistances 16 to a common point 17 which is connected through an amplifier 18, having high input impedance, to the output 12 of the device 11. The voltage at the point 17 represents mean gas temperature and a faulty thermocouple may be removed from circuit by operation of the appropriate make/break switch 15. Each resistance 16 is combined in a set 20 with the components 10a, 13, 15 appropriate for each monitoring site.
GB4906371A 1970-10-21 1971-10-21 Apparatus for monitoring the temperatures at a plurality of monitoring sites Expired GB1357392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702051538 DE2051538A1 (en) 1970-10-21 1970-10-21 Device for monitoring the exhaust gas temperatures of an internal combustion engine

Publications (1)

Publication Number Publication Date
GB1357392A true GB1357392A (en) 1974-06-19

Family

ID=5785664

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4906371A Expired GB1357392A (en) 1970-10-21 1971-10-21 Apparatus for monitoring the temperatures at a plurality of monitoring sites

Country Status (4)

Country Link
DE (1) DE2051538A1 (en)
FR (1) FR2113029A5 (en)
GB (1) GB1357392A (en)
NL (1) NL7113017A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2344895A (en) * 1998-12-17 2000-06-21 Cummins Engine Co Inc Determining a fault condition of an internal combustion engine from intake air temperature measurements
CN102733951A (en) * 2012-06-29 2012-10-17 中国北车集团大连机车车辆有限公司 Flameout monitoring and alarming method for first cylinder of diesel engine
CN111239635A (en) * 2018-11-29 2020-06-05 丰田自动车株式会社 Power supply system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2344895A (en) * 1998-12-17 2000-06-21 Cummins Engine Co Inc Determining a fault condition of an internal combustion engine from intake air temperature measurements
US6101442A (en) * 1998-12-17 2000-08-08 Cummins Engine Co. Inc. System and method for detecting a valve-related fault condition for an internal combustion engine
GB2344895B (en) * 1998-12-17 2003-07-23 Cummins Engine Co Inc A system and method for detecting a fault condition in an internal combustion engine
CN102733951A (en) * 2012-06-29 2012-10-17 中国北车集团大连机车车辆有限公司 Flameout monitoring and alarming method for first cylinder of diesel engine
CN111239635A (en) * 2018-11-29 2020-06-05 丰田自动车株式会社 Power supply system
CN111239635B (en) * 2018-11-29 2022-06-03 丰田自动车株式会社 Power supply system

Also Published As

Publication number Publication date
NL7113017A (en) 1972-04-25
DE2051538A1 (en) 1972-04-27
FR2113029A5 (en) 1972-06-23

Similar Documents

Publication Publication Date Title
GB1125215A (en) Device for the monitoring of mechanical and thermal stresses of internal combustion engines
US3632451A (en) Thermoelectric device having parallel circuits interconnected at equal potential points
GB1357392A (en) Apparatus for monitoring the temperatures at a plurality of monitoring sites
GB1291827A (en) Improvements in or relating to temperature measuring apparatus
US3135873A (en) Sequential measuring system
GB1010595A (en) Improvements relating to alarms
GB1375389A (en)
US4151374A (en) Bus connection detector circuit for bus connection matrix circuit
GB1379204A (en) Flamedetection methods and apparatus
GB999905A (en) Apparatus responsive to the electrical conductivity of a liquid
US3713019A (en) Electronic scanpoint matrix having means for detecting electrical failures therein
GB1235878A (en) Electrical measuring system
SU507887A1 (en) Output device for functional control systems
SU373703A1 (en) ALL-UNION
SU406201A1 (en) DEVICE FOR CONTROL OF ELECTRICAL PARAMETERS OF ELECTRONIC CIRCUITS
US3543093A (en) Power supply monitor
SU483634A1 (en) Device for automatic control of complex electrical circuits
SU1637031A1 (en) Individual grounding device
US3294943A (en) Resistance measuring circuit
SU1453504A1 (en) Device for monitoring operational state of relay protection unit
US2374030A (en) Indicating system
JPH0418003Y2 (en)
SU558340A1 (en) Interlock device
SU800908A1 (en) Device for determining damager wire of electric detonator
SU443321A1 (en) Device for controlling electrical parameters

Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed