EP1043499A1 - Method and apparatus to avoid belt sliding - Google Patents

Method and apparatus to avoid belt sliding Download PDF

Info

Publication number
EP1043499A1
EP1043499A1 EP00104204A EP00104204A EP1043499A1 EP 1043499 A1 EP1043499 A1 EP 1043499A1 EP 00104204 A EP00104204 A EP 00104204A EP 00104204 A EP00104204 A EP 00104204A EP 1043499 A1 EP1043499 A1 EP 1043499A1
Authority
EP
European Patent Office
Prior art keywords
generator
slip
belt
slippage
shaft
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.)
Granted
Application number
EP00104204A
Other languages
German (de)
French (fr)
Other versions
EP1043499B1 (en
Inventor
Michael Dr. Maurer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1043499A1 publication Critical patent/EP1043499A1/en
Application granted granted Critical
Publication of EP1043499B1 publication Critical patent/EP1043499B1/en
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
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/08—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing being of friction type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators

Definitions

  • the invention relates to a method and a device for avoidance a belt slip according to the preamble of claim 1 and the Claim 8.
  • Generators are conventionally used, for example, in motor vehicles driven by a belt from the crankshaft. At high values the rotational acceleration or deceleration of the crankshaft it, especially due to the inertia of the generator, to one Slip will come between the belt and the pulleys. This Slip not only leads to excessive wear but causes also an increased noise emission.
  • EP 0 136 384 A proposes that of the auxiliary units caused load on a prime mover during a start or an acceleration process the drive machine by decoupling. Belt slippage can thus be partially prevented.
  • the object of the invention is to prevent slippage or the risk of slippage with a method or a device of the type mentioned at the beginning Reduce.
  • the electrical machine in this way operated that it actively reduces the slip.
  • the acceleration values of the crankshaft are too high, those of the internal combustion engine driven belt the pulley of the electrical machine want to overtake, the electrical machine is actively accelerated, i.e. the Electrical machine is supplied with electricity so that it works like an electric motor works and so accelerates itself. The belt slip is thus reduced.
  • crankshaft deceleration values are too great, where the electrical machine want to overhaul the belt due to their kinetic energy, the electrical machine is actively decelerated, i.e. of the electrical machine electricity is drawn so that it works like an electric brake and brakes itself like this. The belt slip is reduced. Conveniently the electrical current is withdrawn from the electrical machine is supplied to the vehicle network.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The method involves determining a measure of the danger of belt slip and if this value exceeds a threshold value, braking or accelerating the generator so that slip or the danger of slip is reduced. The shaft angular acceleration or deceleration can be as the measure of the danger of slipping. An Independent claim is also included for an arrangement for preventing belt slip.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Vermeidung eines Riemenschlupfes gemäß dem Oberbegriff des Anspruchs 1 bzw. des Anspruchs 8.The invention relates to a method and a device for avoidance a belt slip according to the preamble of claim 1 and the Claim 8.

Herkömmlicherweise werden Generatoren beispielsweise in Kraftfahrzeugen über einen Riemen von der Kurbelwelle aus angetrieben. Bei hohen Werten der rotatorischen Beschleunigung oder Verzögerung der Kurbelwelle kann es, insbesondere bedingt durch die Trägheit des Generators, zu einem Schlupf zwischen dem Riemen und den Riemenräder kommen. Dieser Schlupf führt nicht nur zu einem übermäßigen Verschleiß sondern verursacht auch eine erhöhte Geräuschemission.Generators are conventionally used, for example, in motor vehicles driven by a belt from the crankshaft. At high values the rotational acceleration or deceleration of the crankshaft it, especially due to the inertia of the generator, to one Slip will come between the belt and the pulleys. This Slip not only leads to excessive wear but causes also an increased noise emission.

In der EP 0 136 384 A wird vorgeschlagen, die von den Nebenaggregaten verursachte Last auf eine Antriebsmaschine bei einem Start oder einem Beschleunigungsvorgang der Antriebsmaschine durch Abkoppelung zu verringern. Ein Riemenschlupf kann damit teilweise unterbunden werden.EP 0 136 384 A proposes that of the auxiliary units caused load on a prime mover during a start or an acceleration process the drive machine by decoupling. Belt slippage can thus be partially prevented.

Bekannt sind ferner Systeme, bei denen statt einer elektrischen Maschine, die nur Strom erzeugt, Maschinen im Riementrieb eingesetzt werden, die zusätzlich den Verbrennungsmotor auch starten können.Systems are also known in which, instead of an electrical machine, which only generates electricity, machines are used in the belt drive, which can also start the internal combustion engine.

Aufgabe der Erfindung ist es, den Schlupf oder die Gefahr eines Schlupfes bei einem Verfahren oder einer Vorrichtung der eingangs genannten Art zu vermindern. The object of the invention is to prevent slippage or the risk of slippage with a method or a device of the type mentioned at the beginning Reduce.

Diese Aufgabe wird verfahrensmäßig durch die im Anspruch 1 genannten und vorrichtungsmäßig durch die im Anspruch 8 genannten Merkmale gelöst.This task is procedurally by those mentioned in claim 1 and solved in terms of device by the features mentioned in claim 8.

Vorteilhafte Maßnahmen sind in den Unteransprüchen definiert.Advantageous measures are defined in the subclaims.

Erfindungsgemäß wird in Betriebsfällen, wo eine Gefahr eines übermäßigen Schlupfes besteht oder sogar Schlupf vorliegt, die elektrische Maschine derart betrieben, daß sie den Schlupf aktiv vermindert.According to the invention in operating cases where there is a risk of excessive There is slip or even slip, the electrical machine in this way operated that it actively reduces the slip.

Die Maßnahmen sollen für eine Kurbelwelle eines Verbrennungsmotors erläutert werden.The measures are intended to be explained for a crankshaft of an internal combustion engine become.

Bei zu großen Beschleunigungswerten der Kurbelwelle, wo der vom Verbrennungsmotor angetriebene Riemen das Riemenrad der elektrischen Maschine überholen möchte, wird die elektrische Maschine aktiv beschleunigt, d.h. der elektrischen Maschine wird Strom zugeführt, so daß sie wie ein Elektromotor arbeitet und sich so selbst beschleunigt. Der Riemenschlupf wird somit abgebaut.If the acceleration values of the crankshaft are too high, those of the internal combustion engine driven belt the pulley of the electrical machine want to overtake, the electrical machine is actively accelerated, i.e. the Electrical machine is supplied with electricity so that it works like an electric motor works and so accelerates itself. The belt slip is thus reduced.

Bei zu großen Verzögerungswerten der Kurbelwelle, wo die elektrische Maschine aufgrund ihrer kinetischen Energie den Riemen überholen möchte, wird die elektrische Maschine aktiv verzögert, d.h. der elektrischen Maschine wird Strom entnommen, so daß sie wie eine elektrische Bremse arbeitet und sich so selbst abbremst. Der Riemenschlupf wird dabei abgebaut. Günstigerweise wird der elektrische Strom, der der elektrischen Maschine entzogen wird, dem Fahrzeugnetz zugeführt.If the crankshaft deceleration values are too great, where the electrical machine want to overhaul the belt due to their kinetic energy, the electrical machine is actively decelerated, i.e. of the electrical machine electricity is drawn so that it works like an electric brake and brakes itself like this. The belt slip is reduced. Conveniently the electrical current is withdrawn from the electrical machine is supplied to the vehicle network.

Durch das erfindungsgemäße Verfahren bzw. die erfindungsgemäße Vorrichtung wird der Schlupf und der mit ihm verbundene Verschleiß sowie das dadurch verursachte Geräusch vermieden.By the method according to the invention or the device according to the invention the slip and the wear associated with it as well as the noise caused thereby avoided.

Claims (10)

Verfahren zur Verminderung des Riemenschlupfes bei einem Riemen, der einen Generator mit einer Welle eines Motors verbindet, wobei der Generator auch als Antriebsmotor (Starter) betreibbar ist,
dadurch gekennzeichnet, daß ein Maß für die Gefahr eines Riemenschlupfes ermittelt wird und daß bei Überschreiten eines Grenzwertes der Generator derart beaufschlagt, nämlich abgebremst oder beschleunigt wird, daß ein Schlupf oder die Gefahr für einen Schlupf verringert wird. Method for reducing belt slip in a belt that connects a generator to a shaft of an engine, the generator also being operable as a drive motor (starter),
characterized, that a measure of the risk of belt slip is determined and that when a limit value is exceeded, the generator is acted upon, namely braked or accelerated, in such a way that slippage or the risk of slippage is reduced. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß als Maß für die Gefahr eines Riemenschlupfes die Beschleunigung oder die Verzögerung der Wellenumdrehungsgeschwindigkeit verwendet wird. Method according to claim 1,
characterized, that the acceleration or deceleration of the shaft rotation speed is used as a measure of the risk of belt slippage. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Drehzahl der Welle erfaßt wird, daß die Drehzahl des Generators erfaßt wird, daß aus beiden Drehzahlen der Schlupf des Riemens ermittelt wird und daß der Generator derart beaufschlagt, nämlich beschleunigt oder abgebremst wird, daß sich der Schlupf vermindert. Method according to claim 1,
characterized, that the speed of the shaft is detected, that the speed of the generator is detected, that the slip of the belt is determined from both speeds and that the generator is acted upon, namely accelerated or braked, so that the slip is reduced. Verfahren nach Anspruch 3,
dadurch gekennzeichnet, daß ein erster Schlupf-Grenzwert vorgegeben ist, ab dem die Schlupfverminderung aktiviert wird. Method according to claim 3,
characterized, that a first slip limit value is specified, from which the slip reduction is activated. Verfahren nach Anspruch 3 oder 4,
dadurch gekennzeichnet, daß ein zweiter Schlupf-Genzwert vorgegeben ist, ab dem die Schlupfverminderung deaktiviert wird. Method according to claim 3 or 4,
characterized, that a second slip limit value is specified, from which the slip reduction is deactivated. Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß der Generator bei seiner Beschleunigung nach Art eines Elektromotors betrieben wird. Method according to one of claims 1 to 5,
characterized, that the generator is operated in the manner of an electric motor when it accelerates. Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß der Generator bei seiner Verzögerung nach Art einer elektrischen Bremse betrieben wird. Method according to one of claims 1 to 6,
characterized, that the generator is operated in the manner of an electric brake when it is delayed. Vorrichtung zur Verminderung des Riemenschlupfes mit einem Riemen, der einen Generator mit einer Welle eines Motors verbindet, wobei der Generator derart ausgebildet ist, daß er auch als Antriebsmotor (Starter) betreibbar ist,
dadurch gekennzeichnet, daß eine erste Einrichtung zur Ermittlung der Gefahr eines Riemenschlupfes auf der Grundlage der Beschleunigung oder der Verzögerung der Wellenumdrehungsgeschwindigkeit vorgesehen ist, daß eine Steueranordnung vorgesehen ist, die mit der ersten Einrichtung verbunden ist und die den Generator derart beaufschlagt, nämlich beschleunigt oder abbremst, daß sich der Schlupf oder die Gefahr für einen Schlupf vermindert. Device for reducing belt slip with a belt that connects a generator to a shaft of an engine, the generator being designed in such a way that it can also be operated as a drive motor (starter),
characterized, that a first device for determining the risk of belt slippage is provided on the basis of the acceleration or deceleration of the shaft rotation speed, that a control arrangement is provided which is connected to the first device and which acts on the generator in such a way, namely accelerates or brakes, that the slippage or the risk of slippage is reduced. Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet, daß eine zweite Einrichtung zur Erfassung der Drehzahl der Welle vorgesehen ist, daß eine dritte Einrichtung zur Erfassung der Drehzahl des Generators vorgesehen ist, daß eine vierte Einrichtung vorgesehen ist, um aus den beiden Drehzahlen den Schlupf des Riemens zu ermitteln. Device according to claim 8,
characterized, that a second device for detecting the speed of the shaft is provided, that a third device is provided for detecting the speed of the generator, that a fourth device is provided to determine the slippage of the belt from the two speeds. Vorrichtung nach einem der Ansprüche 8 bis 9,
dadurch gekennzeichnet, daß die Welle eine Kurbelwelle eines Verbrennungsmotors ist. Device according to one of claims 8 to 9,
characterized, that the shaft is a crankshaft of an internal combustion engine.
EP00104204A 1999-04-08 2000-03-01 Method and apparatus to avoid belt sliding Expired - Lifetime EP1043499B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19915834A DE19915834C1 (en) 1999-04-08 1999-04-08 Method and device for preventing belt slippage
DE19915834 1999-04-08

Publications (2)

Publication Number Publication Date
EP1043499A1 true EP1043499A1 (en) 2000-10-11
EP1043499B1 EP1043499B1 (en) 2003-12-17

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EP00104204A Expired - Lifetime EP1043499B1 (en) 1999-04-08 2000-03-01 Method and apparatus to avoid belt sliding

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EP (1) EP1043499B1 (en)
DE (2) DE19915834C1 (en)
ES (1) ES2212760T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2876297A1 (en) * 2013-11-25 2015-05-27 Peugeot Citroën Automobiles Sa Method for controlling an electric machine for restarting a motor vehicle
DE102005035052B4 (en) * 2005-07-27 2017-01-12 Schaeffler Technologies AG & Co. KG Method for quickly restarting a deactivated internal combustion engine with a belt-driven starter generator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727410A (en) * 1954-11-19 1955-12-20 Wico Electric Co Motor-generator gearing
DE1073806B (en) * 1960-01-21 St. Georgen Hermann Papst (Schwarzw.) Clutch for gears of starting alternators for internal combustion engines
EP0136384A1 (en) * 1983-10-03 1985-04-10 Canadian Fram Limited Engine crankshaft pulley clutch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073806B (en) * 1960-01-21 St. Georgen Hermann Papst (Schwarzw.) Clutch for gears of starting alternators for internal combustion engines
US2727410A (en) * 1954-11-19 1955-12-20 Wico Electric Co Motor-generator gearing
EP0136384A1 (en) * 1983-10-03 1985-04-10 Canadian Fram Limited Engine crankshaft pulley clutch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005035052B4 (en) * 2005-07-27 2017-01-12 Schaeffler Technologies AG & Co. KG Method for quickly restarting a deactivated internal combustion engine with a belt-driven starter generator
EP2876297A1 (en) * 2013-11-25 2015-05-27 Peugeot Citroën Automobiles Sa Method for controlling an electric machine for restarting a motor vehicle
FR3013915A1 (en) * 2013-11-25 2015-05-29 Peugeot Citroen Automobiles Sa METHOD FOR CONTROLLING AN ELECTRIC MACHINE FOR RE-STARTING A MOTOR VEHICLE

Also Published As

Publication number Publication date
DE50004761D1 (en) 2004-01-29
DE19915834C1 (en) 2000-11-16
EP1043499B1 (en) 2003-12-17
ES2212760T3 (en) 2004-08-01

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