EP0576639B1 - Verfahren und vorrichtung zum betreiben eines an einer brennkraftmaschine angeordneten nebenaggregateantriebes - Google Patents

Verfahren und vorrichtung zum betreiben eines an einer brennkraftmaschine angeordneten nebenaggregateantriebes Download PDF

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Publication number
EP0576639B1
EP0576639B1 EP92924692A EP92924692A EP0576639B1 EP 0576639 B1 EP0576639 B1 EP 0576639B1 EP 92924692 A EP92924692 A EP 92924692A EP 92924692 A EP92924692 A EP 92924692A EP 0576639 B1 EP0576639 B1 EP 0576639B1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
speed
drive
phase generator
internal
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
EP92924692A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0576639A1 (de
Inventor
Donatus Wichelhaus
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0576639A1 publication Critical patent/EP0576639A1/de
Application granted granted Critical
Publication of EP0576639B1 publication Critical patent/EP0576639B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • 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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
    • 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • 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
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/62—Load

Definitions

  • the invention relates to a method and an apparatus for carrying out the method according to the preambles of claims 1 and 6.
  • a generator system for an internal combustion engine in which a generator is driven by the internal combustion engine via an intermediate drive.
  • the generator speed can thus be influenced independently of the speed of the internal combustion engine.
  • the generator speed can be reduced via this electronically controllable intermediate drive. Complete decoupling at full load is also possible.
  • This intermediate drive can be used to adapt the generator speed to the voltage requirements of the vehicle electrical system.
  • the generator control can take place on the basis of different maps, which were determined by test bench tests and take into account different criteria such as power requirement, consumption, exhaust gas and driving behavior.
  • a time-controlled excitation current is fed to the three-phase generator.
  • the excitation current is set at one time interval
  • the controller is switched on and off in such a way that a specific, first average excitation current is set at a constant on-board voltage. So that at a second, higher generator speed, the on-board voltage permitted for the on-board electrical system of the motor vehicle is regulated to its setpoint, the controller changes the clock signal in such a way that the switched-off time components increase and a second, middle excitation current is set, which is lower than the first.
  • the on-board voltage induced in the generator which is dependent on the excitation current and the speed, remains constant.
  • DE-PS 31 24 102 discloses a consumer-current-dependent switchover between a higher and a lower drive speed of an alternator.
  • the transmission upstream of the alternator has a clutch actuated by a control device, which performs the speed changeover in such a way that the higher drive speed is only maintained when a low engine speed and at the same time a high current requirement is present at the alternator.
  • the current requirement is fed to a regulator for the excitation current, which in turn is fed to the control device.
  • a planetary gear is arranged coaxially on a crankshaft stub, the sun gear of which is provided with an electromagnetically lockable clutch disc and the ring gear of which drives auxiliary units.
  • the clutch disc is switched depending on several parameters, for example the battery charging current or the cooling water temperature of the internal combustion engine.
  • the invention is based on the object of providing a method and a device for operating an auxiliary unit drive of an internal combustion engine which enables demand-controlled drive of a three-phase generator and at least one additional auxiliary unit.
  • This method advantageously enables a demand-controlled drive of individual auxiliary units, such as, for example, by engaging the excitation current supplied to the three-phase generator (alternator) in combination with a differential gear arranged between the internal combustion engine and the auxiliary units. a water pump.
  • the power delivered by the internal combustion engine to the differential gear at a constant speed can be assumed to be constant and is distributed to these units in an initially constant torque ratio depending on the gearbox design.
  • the drive torque of the water pump can be assumed to be constant, while that of the alternator depends on the excitation current.
  • the controller When the internal combustion engine is cold started, the controller is supplied, for example, with a signal dependent on the cooling water temperature, which changes the clocking of the alternator excitation current. With a cold internal combustion engine, little or no cooling water throughput is desired.
  • the on-board voltage induced in the alternator depends directly on the excitation current and the drive speed of the alternator. If the excitation current falls and the drive torque of the alternator is reduced by a certain amount, the differential speed increases the drive speed and thereby keeps the on-board voltage constant. Due to the balancing effect of the planetary gear, the drive speed of the water pump is reduced.
  • a high gear ratio with respect to the alternator can be achieved, so that the electrical requirement e.g. is covered even at idle speed.
  • the alternator can thus be operated in a favorable efficiency range of its map.
  • the second auxiliary unit for example a water pump.
  • the power consumption is based on the cooling water throughput of the internal combustion engine at full load and maximum speed. At partial load or at low engine speeds, the cooling requirement of the internal combustion engine drops to up to a third of the maximum cooling capacity.
  • the method according to the invention enables a demand-controlled drive of the water pump, in which, when the cooling water temperature is low, the differential gear lowers the drive speed of the water pump and increases the increased cooling demand when the internal combustion engine is heated.
  • the load- or cooling water temperature-dependent signal is supplied only when the cooling water temperature falls below a specified limit. If the current cooling water temperature is below the limit value, the clocking of the excitation current is changed so that this excitation current drops. As a result, the drive torque of the alternator drops and its speed increases, the speed of the water pump decreases.
  • a locking device can be arranged between the output of the planetary gear and the water pump, which stops the water pump on a cold start. This increases the speed of the alternator.
  • the cooling capacity can additionally be regulated between a third and zero of the maximum cooling capacity.
  • an auxiliary unit drive driven by a crankshaft 1 is arranged.
  • the crankshaft 1 is connected to a planet carrier 2 of a differential gear designed as a planetary gear 3.
  • a first output 5 designed as a ring gear 4 drives a three-phase generator 7 acting as an alternator by means of a belt drive 6.
  • a second output 9 acting as a sun gear 8 is connected to a water pump 11 by means of a further belt transmission 10.
  • a belt 12 of the transmission 10 wraps around a disk 13 of the water pump 11, an electromagnetic clutch 15 acting as a locking device being arranged between this disk 13 and a shaft 14 of the water pump 11.
  • a control unit 20 processes the speed NL of the generator 7, the speed n of the internal combustion engine, a load-dependent signal SL and a cooling water temperature-dependent signal ST.
  • a lower limit GT for the signal ST is stored in the control unit 20.
  • the clutch 15 is switched on or off by the control unit 20 as required, via a line 21.
  • a controller 22 for an excitation current IE supplied to the generator 7 is supplied with a clock signal TN as a function of the speed NL and a clock signal TS as a function of the signals SL and ST.
  • the excitation current IE is clocked in a known manner as a function of the generator speed NL via the signal TN.
  • the total power PG transmitted from the internal combustion engine into the differential is divided into a drive torque ML with the speed NL supplied to the generator 7 and a drive torque MW supplied with the water pump 11 with a speed NW according to the number of teeth of the planetary gear 3.
  • the belt transmission 6 has a transmission ratio of one to two point five (1: 2.5), that of the transmission 10 is one to one (1: 1).
  • the torque ratio ML / MW depends on the characteristic diagrams of the auxiliary units in which the power is plotted against the drive speed and can be assumed, for example, to be four.
  • the clock signal TS overlaps the clock signal TN and the excitation current IE directly regulates the drive torque ML as required and indirectly via the planetary gear 3 the speed NW of the water pump 11.
  • a change in the alternator speed LM by e.g. 1000 l / min results in a change in the speed of the ring gear 4 of 400 1 / min due to the transmission ratio of the belt operation 6 of 1: 2.5.
  • the water pump speed NW changes by 1600 l / min.
  • the value can be reduced by a certain amount if the limit value GT is undershot Water pump 11 are braked by means of the clutch 15.
  • the speed NL increases and the excitation current IE is further reduced to keep the on-board voltage UB constant.
  • the cooling capacity can additionally be regulated in the range from zero to approximately 0.3 of the full-load cooling capacity.
  • the load signal SL which e.g. Depends directly on the throttle valve position on the internal combustion engine, only has an influence on the controller 22 as long as ST is below the limit value GT.
  • crankshaft 1 can e.g. be connected to the sun gear 8 and the water pump 11 to the planet carrier 2.
  • a second transmission gear can be arranged between the crankshaft 1 and the differential gear.
  • additional auxiliary units such as a secondary air pump required during a cold start can be installed in the auxiliary drive.

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)
EP92924692A 1992-01-16 1992-12-08 Verfahren und vorrichtung zum betreiben eines an einer brennkraftmaschine angeordneten nebenaggregateantriebes Expired - Lifetime EP0576639B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4200918A DE4200918C1 (enrdf_load_stackoverflow) 1992-01-16 1992-01-16
DE4200918 1992-01-16
PCT/EP1992/002837 WO1993014560A1 (de) 1992-01-16 1992-12-08 Verfahren und vorrichtung zum betreiben eines an einer brennkraftmaschine angeordneten nebenaggregateantriebes

Publications (2)

Publication Number Publication Date
EP0576639A1 EP0576639A1 (de) 1994-01-05
EP0576639B1 true EP0576639B1 (de) 1996-03-20

Family

ID=6449582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92924692A Expired - Lifetime EP0576639B1 (de) 1992-01-16 1992-12-08 Verfahren und vorrichtung zum betreiben eines an einer brennkraftmaschine angeordneten nebenaggregateantriebes

Country Status (5)

Country Link
US (1) US5429082A (enrdf_load_stackoverflow)
EP (1) EP0576639B1 (enrdf_load_stackoverflow)
JP (1) JPH06506582A (enrdf_load_stackoverflow)
DE (2) DE4200918C1 (enrdf_load_stackoverflow)
WO (1) WO1993014560A1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2752016B1 (fr) * 1996-07-31 1998-09-11 Renault Dispositif de refroidissement d'un moteur a combustion interne
JP4000863B2 (ja) * 2002-02-15 2007-10-31 株式会社デンソー 車両用発電システム
US8475317B2 (en) 2011-08-03 2013-07-02 Ford Global Technologies, Llc Vehicle accessory drive system
US20150083069A1 (en) * 2013-09-26 2015-03-26 Steven H. Horn Chain drive assembly
DE102015005344A1 (de) 2015-04-28 2016-11-03 Volkswagen Aktiengesellschaft Nebenaggregatsantriebsvorrichtung
DE102016201229A1 (de) 2016-01-28 2017-08-03 Schaeffler Technologies AG & Co. KG Antriebsanordnung sowie Verfahren zum Betreiben der Antriebsanordnung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2213303C2 (de) * 1972-03-18 1985-12-12 Daimler-Benz Ag, 7000 Stuttgart Von der Brennkraftmaschine abgeleiteter Hilfsgeräteantrieb für Hilfsaggregate wie Kühlluftgebläse, Kühlwasserpumpe, Servodruckpumpe und dgl.
DE2732279A1 (de) * 1977-07-16 1979-02-01 Daimler Benz Ag Regelbarer antrieb fuer die nebenaggregate von brennkraftmaschinen, insbesondere von kraftfahrzeug-brennkraftmaschinen
DE2801812A1 (de) * 1978-01-17 1979-07-19 Daimler Benz Ag Antriebsvorrichtung fuer nebenaggregate von brennkraftmaschinen, insbesondere kraftfahrzeugantriebsmaschinen
FR2485293A1 (fr) * 1980-06-19 1981-12-24 Sev Marchal Procede de commande d'un embrayage d'entrainement d'alternateur notamment pour vehicules automobiles et dispositif pour la mise en oeuvre dudit procede
JPS601328A (ja) * 1983-06-16 1985-01-07 Diesel Kiki Co Ltd エンジン補機駆動制御装置
DE3729772A1 (de) * 1987-09-05 1989-03-16 Bosch Gmbh Robert Generatoranlage

Also Published As

Publication number Publication date
DE4200918C1 (enrdf_load_stackoverflow) 1993-03-11
JPH06506582A (ja) 1994-07-21
DE59205774D1 (de) 1996-04-25
EP0576639A1 (de) 1994-01-05
US5429082A (en) 1995-07-04
WO1993014560A1 (de) 1993-07-22

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