EP0096367A2 - Einrichtung zum Verhindern des Festlaufens einer Turboladerantriebswelle durch Wärmedehnung - Google Patents

Einrichtung zum Verhindern des Festlaufens einer Turboladerantriebswelle durch Wärmedehnung Download PDF

Info

Publication number
EP0096367A2
EP0096367A2 EP83105458A EP83105458A EP0096367A2 EP 0096367 A2 EP0096367 A2 EP 0096367A2 EP 83105458 A EP83105458 A EP 83105458A EP 83105458 A EP83105458 A EP 83105458A EP 0096367 A2 EP0096367 A2 EP 0096367A2
Authority
EP
European Patent Office
Prior art keywords
shaft
turbo
bearings
engine
ignition switch
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.)
Withdrawn
Application number
EP83105458A
Other languages
English (en)
French (fr)
Other versions
EP0096367A3 (en
Inventor
Noboru Yamaguchi
Sachiro Kataoka
Ikuya Kato
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of EP0096367A2 publication Critical patent/EP0096367A2/de
Publication of EP0096367A3 publication Critical patent/EP0096367A3/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • 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
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/005—Cooling of pump drives

Definitions

  • the present invention relates to an engine cooling fan control apparatus, and more particularly to apparatus for preventing thermal seizure of the drive shaft of a turbo-supercharger installed in the engine.
  • the drive shaft common to the exhaust turbine and the compressor of the turbo-supercharger is subjected to hot exhaust gas so that the shaft has a tendency to be seized by its bearings.
  • the present invention provides an apparatus which senses the temperature of exhaust to drive a turbo-supercharger shaft cooling means when the sensed temperature exceeds a predetermined value, thereby preventing seizure of the shaft by its bearings.
  • a battery 1 is adapted to supply electrical power to a fan motor 4, installed to cool the engine compartment, via a fusible link 2 and a fuse 3 when the circuit is closed, thereby driving fan motor 4 to cool the engine compartment and therefore the exhaust turbine shaft and its bearings which are subjected .to hot exhaust.
  • Switch 5 acting as a thermal sensor, is closed when the exhaust temperature exceeds a predetermined value, and is open when the exhaust temperature falls below the predetermined value. Fusible link 2 and fuse 3 are for protection of battery 1 and the whole circuit from short- circuiting and/or malfunction of motor 4.
  • FIG. 2 there is shown a second embodiment of a turbine shaft cooling apparatus according to the present invention.
  • this embodiment ensures that the turbine shaft and bearing will be cooled for a predetermined interval after the ignition key is turned off when the exhaust temperature exceeds the predetermined value because the temperature of the engine compartment tends to rise greatly after the engine is turned off.
  • battery 1 has one electrode grounded and the other electrode connected via fusible link 2 and fuse 3 to one terminal of fan motor 4, the other terminal of which is connected to a control terminal C of a timer 6 which serves to control the operating interval of motor 6.
  • the power supply for timer 6 is provided by connection of a power supply terminal B thereof to the output of fuse 3.
  • Timer 6 has an ignition detection terminal Ig to detect the off state of an ignition switch 7.
  • Terminal Ig is connected via a fuse 8 to a terminal of ignition switch 7, the input of which is connected to the output of fusible link 2.
  • Fuse 8 has the same function as fuse 3.
  • power supply terminal B is connected via a stabilizing power source SB and an analog switch AS to a power supply line B' for an amplifier 10.
  • analog switch AS is actuated via input terminal Ig and a resistor r 1 to supply the stabilized supply voltage via B ' to amplifier 10.
  • an exhaust temperature sensor 9 provided in the exhaust manifold, not shown, senses the temperature of exhaust and outputs a signal to amplifier 10 when the sensed temperature is above a predetermined value, for example 700°C.
  • Sensor 9 may be a conventional semiconductor thermal sensor.
  • Amplifier 10 amplifies the signal from sensor 9 and supplies the amplified signal S T to timer 6.
  • Amplifier 10 is supplied with electrical power from terminal B' only while ignition switch is on.
  • Timer 6 may have a structure such as shown in Fig. 3. In this particular structure, an AND gate receives a drive input via resistor r 1 and an inverter INV from terminal Ig while ignition switch 7 is open.
  • a level adjust circuit including a Zener diode Z D , a resistor r 2 and a capacitor C 1 adjusts the voltage at the control input terminal of analog switch AS and at inverter INV to a desired value.
  • Another drive input S T is supplied from amplifier 10 to the AND gate.
  • a hold circuit comprising a resistor r 3 and a capacitor C 2 holds the value of S T for a short time, for example 1 second. The time constant determined by r 3 and C 2 is selected to be greater than that determined by C 1 and r 2 of the level adjust circuit.
  • a monostable multivibrator M/M When the AND gate outputs a high level signal, a monostable multivibrator M/M produces a high level signal continuing for a short predetermined time of from 1 to 3 minutes, thereby turning on a transistor Tr via an OR gate for that interval to operate fan motor 4. For as long as the signal S T persists, transistor Tr is also turned on via the OR gate, thereby operating fan motor 4 for that interval during which the exhaust temperature exceeds the predetermined value.
  • exhaust temperature sensor 9 continuously checks the temperature of exhaust.
  • sensor 9 detects that the temperature of exhaust exceeds the predetermined value (700°C in this particular embodiment)
  • sensor 9 outputs a signal and therefore amplifier 10 outputs a constant-level d.c. voltage signal as signal S T to timer 6 which drives motor 4 via the OR gate and transistor Tr for as long as signal S T persists.
  • ignition switch 7 is opened, the Ig control input to analog switch AS disappears, and analog switch AS is turned off, thereby interrupting the supply of electrical power to amplifier 10.
  • the output signal S T from amplifier 10 disappears, but the value of S T immediately before S T disappears is held by the hold circuit.
  • both inputs to AND gate are high so that monostable multivibrator M/M produces an output continuously for 1 to 3 minutes.
  • the engine compartment, turbo-supercharger shaft and bearings are cooled whereby seizure of the drive shaft is prevented.
  • the temperature of exhust corresponds accurately to the temperature of turbine shaft. After engine stops, the temperature of the exhaust system can rise to a value higher than any other system in the engine compartment. Thus, it is most recommendable to sense the temperature of exhaust itself in order to prevent seizure of the turbo-supercharger shaft by its bearings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Supercharger (AREA)
EP83105458A 1982-06-04 1983-06-01 Apparatus for preventing thermal seizure of a turbo-supercharger drive shaft Withdrawn EP0096367A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9581682A JPS58211521A (ja) 1982-06-04 1982-06-04 車両用エンジンの冷却フアン制御回路
JP95816/82 1982-06-04

Publications (2)

Publication Number Publication Date
EP0096367A2 true EP0096367A2 (de) 1983-12-21
EP0096367A3 EP0096367A3 (en) 1984-12-27

Family

ID=14147942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105458A Withdrawn EP0096367A3 (en) 1982-06-04 1983-06-01 Apparatus for preventing thermal seizure of a turbo-supercharger drive shaft

Country Status (3)

Country Link
EP (1) EP0096367A3 (de)
JP (1) JPS58211521A (de)
AU (1) AU1526783A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0304259A1 (de) * 1987-08-17 1989-02-22 Isuzu Motors Limited Turbolader
US4977743A (en) * 1987-12-28 1990-12-18 Honda Giken Kogyo Kabushiki Kaisha Cooling control system for internal combustion engines equipped with superchargers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1180192B (de) * 1959-11-04 1964-10-22 Geraetebau Eberspaecher O H G Lagerschutzeinrichtung bei Abgasturboladern fuer Brennkraftmaschinen
US4078531A (en) * 1975-05-23 1978-03-14 Hewitt John T Exhaust temperature monitoring system
DE2645733A1 (de) * 1976-10-09 1978-04-13 Bayerische Motoren Werke Ag Schaltanordnung fuer einen luefter- motor
JPS55127832U (de) * 1979-03-06 1980-09-10

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0304259A1 (de) * 1987-08-17 1989-02-22 Isuzu Motors Limited Turbolader
US4884406A (en) * 1987-08-17 1989-12-05 Isuzu Motors Limited Turbocharger
US4977743A (en) * 1987-12-28 1990-12-18 Honda Giken Kogyo Kabushiki Kaisha Cooling control system for internal combustion engines equipped with superchargers

Also Published As

Publication number Publication date
JPS58211521A (ja) 1983-12-09
EP0096367A3 (en) 1984-12-27
AU1526783A (en) 1983-12-08

Similar Documents

Publication Publication Date Title
US4168456A (en) Apparatus for controlling an electric motor for driving a cooling fan of an internal combustion engine
US3938479A (en) Exhaust gas sensor operating temperature detection system
US7725238B2 (en) System and method for smart system control for flowing fluid conditioners
US6247300B1 (en) Gas turbine engine
US4890459A (en) Monitor for refrigeration system
GB2190807A (en) Method of ventilation or heat transfer
KR0137362B1 (ko) 공기조절 시스템의 압축기 제어 방법
KR880009191A (ko) 내연기관의 회전수 제어장치
US4854292A (en) Ignition system for internal combustion engine
EP0096367A2 (de) Einrichtung zum Verhindern des Festlaufens einer Turboladerantriebswelle durch Wärmedehnung
US5844383A (en) Gas turbine engine starting system and method
US4280059A (en) Detecting power loss in free turbines
JPH02218839A (ja) 内燃機関のアイドル回転数制御装置
US3362388A (en) Safety ignition system
US6702457B1 (en) Method and apparatus for a thermal wake-up circuit
US4889101A (en) Arrangement for calculating the fuel injection quantity for an internal combustion engine
USRE27108E (en) Cm o cm
GB2120414A (en) Automatic control of a cooling system for a turbocharger
US4329725A (en) Control circuitry for multistage fans
JP2545566B2 (ja) ターボチャージャ付内燃エンジンの冷却制御装置
JPS60240842A (ja) 水温センサ−故障時のフエイルセ−フ装置
JPS57119125A (en) Cooler of automotive electronic circuit
JPS63306278A (ja) 内燃機関用点火装置
JPH0643822B2 (ja) ガスエンジンの失火制御装置
JPH0736098Y2 (ja) 内燃機関用のアイドリング継続装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19830601

AK Designated contracting states

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

PUAF Information related to the publication of a search report (a3 document) modified or deleted

Free format text: ORIGINAL CODE: 0009199SEPU

AK Designated contracting states

Designated state(s): DE FR GB

18W Application withdrawn

Withdrawal date: 19841013

D17D Deferred search report published (deleted)
RIN1 Information on inventor provided before grant (corrected)

Inventor name: YAMAGUCHI, NOBORU

Inventor name: KATO, IKUYA

Inventor name: KATAOKA, SACHIRO