WO2001088348A9 - Power supply unit - Google Patents
Power supply unitInfo
- Publication number
- WO2001088348A9 WO2001088348A9 PCT/BE2001/000082 BE0100082W WO0188348A9 WO 2001088348 A9 WO2001088348 A9 WO 2001088348A9 BE 0100082 W BE0100082 W BE 0100082W WO 0188348 A9 WO0188348 A9 WO 0188348A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- internal combustion
- combustion engine
- power supply
- supply unit
- temperature
- Prior art date
Links
Classifications
-
- 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
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
-
- 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
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/048—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using electrical drives
-
- 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
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
- F02B63/042—Rotating electric generators
Definitions
- This invention relates to a power supply unit which comprises an internal combustion engine which is cooled by a cooling fluid, a power generator coupled to this internal combustion engine, a cooling circuit for the cooling fluid which extends over the internal combustion engine, and a cooler for cooling down the fluid, which cooler is of the type comprising a radiator taken up in the cooling circuit and a fan cooperating therewith.
- such power supply units are mobile units which are used for supplying alternating current at locations without a mains supply, or as an emergency unit for supplying power when the mains supply is out of order.
- These power supply units must supply power at a constant frequency, mostly 50 Hz or 60 Hz, which means that the motor, mostly a diesel engine, must have a constant number of revolutions.
- the fan of the cooler is driven at a constant number of revolutions, mostly by means of a transmission, in most cases, a belt trans- mission, by means of the crankshaft of the internal combustion engine.
- the cooler then is calculated such that it can cool this fluid in a sufficient manner even in the worst circumstances, this is with a maximum load of the internal combustion engine and at the highest environmental temperature.
- the load on the internal combustion engine may vary strongly, for example, from 5% to 100%, whereas also the environmental temperature may vary strongly, for example, between -10°C and 45°C.
- An excess cooling of the motor can be avoided by means of a thermostate in the cooling circuit.
- the invention aims at a power supply unit which does not show the aforementioned disadvantages and has a better energetic efficiency.
- this aim is achieved in that a control device is coupled to the internal combustion engine, which device controls critical parameters of the internal combustion engine, amongst which at least the temperature of the cooling fluid, and whereby the fan comprises an electric motor with adjustable speed which, for its power supply, is coupled to the outlet of the generator, by means of a controlling apparatus which, in function of the signal from the control device and, thus, at least in function of the temperature of the cooling fluid regulates the speed of the electric motor.
- the temperature of the cooling fluid corresponds to the temperature of the internal combustion engine and depends on the load and the environmental temperature.
- the controlling apparatus regulates this number of revolutions such that it is minimum for each degree of load of the internal combustion engine and, thus, diminishes as the load diminishes, without, however, dropping below the number of revolutions at which the internal combustion engine no longer can work safely.
- the controlling apparatus regulates this number of revolutions such that the maximum temperature of the cooling fluid is not exceeded. Possibly, the number of revolutions also is regulated such that the maximum temperature of another fluid having a critical maximum temperature, such as the maximum temperature of the lubricating oil of the internal combustion engine or the maximum temperature of the air suctioned by this latter, is not exceeded.
- This maximum temperature of the cooling fluid depends on the type of motor, however, can be provided by the manufacturer.
- the controlling apparatus can comprise a frequency transformer and therefore can be of the type which controls the speed of the electric motor by altering the requency.
- the power supply unit represented in the figure is mounted in a preferably mobile housing, of which only the basis 1 is represented, and substantially consists of a diesel engine 2, an A.C. generator or alternator 4 coupled thereto by means of a coupling 3, for example, a 400 V/50Hz alternator, a cooler 5 consisting of a radiator 6 mounted in the cooling circuit 7 of the diesel engine 2, and a fan 8 driven by an electric motor 9 with an adjustable number of revolutions which is controlled by means of a controlling apparatus 10.
- a branch is connected where the electric energy is branched off which, by means of the controlling apparatus 10, serves for driving the motor 9 of the fan 8.
- the motor 9 is, for example, an induction motor, the number of revolutions of which depends on the frequency of its supply.
- the controlling apparatus 10 comprises a frequency transformer 14 which can vary the frequency between, for example, 0 and 100 Hz, which, by means of a signal transformer 15, is coupled to a control device 16 which is coupled to the diesel engine 2 and which observes one or more critical parameters of this diesel engine 2.
- This control device 16 observes at least the temperature of the cooling fluid, to wit, the cooling water, which is pumped through the cooling circuit 7, and therefore comprises a thermometer 16A which is provided at the exit or downstream of the internal combustion engine in or at this cooling circuit 7.
- This temperature is equal to the temperature of the diesel engine 2 which is a function of the load and the temperature of the environment.
- the controlling apparatus 10 regulates the number of revolutions of the motor 9 such that the maximum temperature of the cooling fluid and, thus, the maximum temperature of the diesel engine 2 is not exceeded.
- control device 16 also observes other critical parameters of the diesel engine 2, such as the temperature of the lubricating oil in the carter of the motor and the temperature of the air suctioned by the diesel engine for combustion, and thus comprises a thermometer 16B in the carter and a thermometer 16C in the air inlet 17 of the diesel engine 2.
- the controlling apparatus 10 controls the motor 9 such that the temperature of another fluid with critical maximum temperature, such as the temperature of the lubricating oil of the diesel engine 2, or the temperature of the air suctioned by this latter, do not exceed their allowed maximum.
- another fluid with critical maximum temperature such as the temperature of the lubricating oil of the diesel engine 2, or the temperature of the air suctioned by this latter, do not exceed their allowed maximum.
- the fuel temperature can be measured.
- control device also can comprise a thermometer measuring the temperature of the intermediate cooler.
- This intermediate cooler also may comprise a radiator which can be mounted next to the radiator 6 of the cooler 5 and, thus, is cooled by said fan 8, driven by motor 9.
- This signal then is transformed in the signal transformer 15 to a current controlling the frequency transformer 14, such that the speed of the motor 9 of the fan 8 is minimum, without the danger that the operation of the diesel engine 2 is not safe.
- the frequency of the motor 9 will be reduced when the load and, thus, the temperature of the cooling fluid in the cooling circuit 7 is reduced.
- the control can take these temperatures into account by means of the controlling apparatus 10, such that the diesel engine 2 remains working safely.
- the lubricating oil itself can be cooled and be pumped through a circuit in which a cooling radiator is mounted and which also is mounted opposite to said fan 8 driven by the motor 9.
- this signal can be used for regulating the speed of the motor 9 of the fan 8.
- the number of revolutions of the motor 9 of the fan 8 does not necessarily have to be adjusted by means of a frequency transformer.
- Other electronically adjustable motors are known, the speed of which can be regulated in other ways than by regulating the frequency.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU59963/01A AU5996301A (en) | 2000-05-12 | 2001-05-10 | Power supply unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2000/0323A BE1013435A3 (en) | 2000-05-12 | 2000-05-12 | Power generator. |
BE20000323 | 2000-05-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001088348A1 WO2001088348A1 (en) | 2001-11-22 |
WO2001088348A9 true WO2001088348A9 (en) | 2002-02-14 |
Family
ID=3896524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BE2001/000082 WO2001088348A1 (en) | 2000-05-12 | 2001-05-10 | Power supply unit |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU5996301A (en) |
BE (1) | BE1013435A3 (en) |
WO (1) | WO2001088348A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITRM20130011A1 (en) * | 2013-01-09 | 2014-07-10 | Bruno S R L | ELECTROGEN GROUP WITH IMPROVED EFFICIENCY AND SILENCE. |
NL2021031B1 (en) * | 2018-05-31 | 2019-12-11 | Bredenoord Holding B V | Operating a fan of an engine-generator |
JP7225790B2 (en) * | 2018-12-26 | 2023-02-21 | マツダ株式会社 | Compression ignition engine with supercharger |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE958349C (en) * | 1952-12-14 | 1957-02-14 | Hans Still Ag | Fan system for internal combustion engines |
JPH02218813A (en) * | 1989-02-17 | 1990-08-31 | Rusoo Kk | Generator set |
ES2063588T3 (en) * | 1991-06-03 | 1995-01-01 | Siemens Ag | FAN INSTALLATION. |
JPH07174366A (en) * | 1993-12-17 | 1995-07-14 | Yanmar Diesel Engine Co Ltd | Outdoor machine power supplying mechanism for engine heat pump |
DE19508102C1 (en) * | 1995-03-08 | 1996-07-25 | Volkswagen Ag | Method for regulating a cooling circuit of an internal combustion engine, in particular for motor vehicles |
DE19719792B4 (en) * | 1997-05-10 | 2004-03-25 | Behr Gmbh & Co. | Method and device for regulating the temperature of a medium |
-
2000
- 2000-05-12 BE BE2000/0323A patent/BE1013435A3/en not_active IP Right Cessation
-
2001
- 2001-05-10 WO PCT/BE2001/000082 patent/WO2001088348A1/en active Application Filing
- 2001-05-10 AU AU59963/01A patent/AU5996301A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
AU5996301A (en) | 2001-11-26 |
BE1013435A3 (en) | 2002-01-15 |
WO2001088348A1 (en) | 2001-11-22 |
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