WO1998051926A1 - Placement d'une machine a fonction de demarreur-generateur sur un moteur a combustion interne - Google Patents

Placement d'une machine a fonction de demarreur-generateur sur un moteur a combustion interne Download PDF

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Publication number
WO1998051926A1
WO1998051926A1 PCT/DE1998/001228 DE9801228W WO9851926A1 WO 1998051926 A1 WO1998051926 A1 WO 1998051926A1 DE 9801228 W DE9801228 W DE 9801228W WO 9851926 A1 WO9851926 A1 WO 9851926A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical machine
internal combustion
drive unit
combustion engine
unit according
Prior art date
Application number
PCT/DE1998/001228
Other languages
German (de)
English (en)
Inventor
Gerhard Koelle
Barlas Turgay
Peter Glauning
Original Assignee
Robert Bosch Gmbh
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
Priority claimed from DE19745997A external-priority patent/DE19745997A1/de
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1998051926A1 publication Critical patent/WO1998051926A1/fr

Links

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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • 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
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/18—Heater
    • F01P2060/185—Heater for alternators or generators

Definitions

  • the invention relates to an arrangement of a combined starter-generator machine on an internal combustion engine, preferably for use in motor vehicles according to the features mentioned in the preamble of claim 1.
  • internal combustion engines are usually equipped with a generator that is constantly running, which on the one hand ensures a permanent supply to the electrical system and on the other hand charges the voltage source necessary for operating the starter motor.
  • This generator also referred to as an alternator, is usually driven by means of a V-belt or toothed belt via the crankshaft of the internal combustion engine.
  • the generator typically delivers its nominal power at a medium speed, but must be dimensioned such that it can already deliver sufficient electrical power at low speeds, corresponding to the idling speed of the internal combustion engine. At the same time, however, it must be designed for the maximum speed of the internal combustion engine and still have to be adequately cooled. Cooling at higher speeds is usually carried out by air ventilation, which is supported by attached fan blades.
  • there is usually a pronounced torque ripple in the internal combustion engine which is usually equipped with reciprocating pistons, as well as a mass inertia of the generator, which makes belt drive sensible and necessary.
  • the problem of dimensioning and dimensioning first arises the operating or nominal speed.
  • a relatively high output at low speed is required because the internal combustion engine only has to be started below the idling speed.
  • the coupling described above is selected with a gear pair on the motor side, which is disconnected automatically after the start of the internal combustion engine or by a switch actuated by the operator.
  • the generator on the other hand, must be able to ensure sufficient power output over a wide and much higher speed range, namely from idle speed to the maximum speed of the internal combustion engine, and without being exposed to the risk of overheating at maximum speed. If the generator is also to be designed for high electrical power output, as is necessary for modern motor vehicles with a large number of electrical consumers, such as servomotors and servo motors, the conventional belt drive previously used will soon reach the limits of its performance.
  • the older patent application DE 196 29 839.3 further describes an internal combustion engine for motor vehicles, with a transmission acting on the drive wheels of the motor vehicle, a transmission input shaft being able to be coupled to an output shaft of the internal combustion engine, and with an electric machine which can be coupled to the transmission via an intermediate transmission and which can be switched both as a starter motor for starting the internal combustion engine and as a generator for energizing an electrical system of the motor vehicle.
  • a starter motor with high torque at low speeds, which is at the same time unfavorable for operation as a generator at higher speeds.
  • the invention is therefore based on the object of developing a combined starter-generator machine of high power for an internal combustion engine which delivers sufficient mechanical power when the engine is started and can transmit it safely, and also a high electrical power when operating as a generator at higher speeds Can deliver performance.
  • the drive unit according to the invention with the features mentioned in claim 1 has the advantage that when the electrical machine is positioned in the drive train, either behind the clutch on the transmission input shaft or before the clutch on the output shaft of the internal combustion engine, as well as a rotationally fixed gear connection with this one rigid connection is created that can transmit very high mechanical power.
  • An operative connection at a point behind the clutch has a relatively low torque ripple, which enables a rigid connection of the electrical machine and a power transmission by means of gearwheels, such as a pair of bevel gears.
  • Coupling the electrical machine in the drive train of a motor vehicle provided with automatic power transmission is also advantageous.
  • the electrical machine can either be coupled directly to the output shaft of the internal combustion engine, that is to say in front of a hydrodynamic torque converter that is usually present.
  • a coupling between the torque converter and the automatic transmission is also possible, which has the particular advantage that the torque ripples Internal combustion engine at this point are already strongly damped by the torque converter.
  • Another advantage of such a rigid coupling of the electrical machine is the possibility of providing an automatic swing utilization system, that is to say generator operation when the vehicle is rolling and the internal combustion engine is switched off. This operation would not be conceivable in the case of a belt-driven generator, since sufficient torque cannot be transmitted with the V-belts or toothed belts that are usually used.
  • additional gear synchronization can also be advantageously implemented. For example, a short torque surge can be applied by the electrical machine when changing the switching stages in order to match the speeds of the intermeshing gearwheels.
  • the electrical machine can be braked by briefly applying a strong electrical load and thereby decelerate the speed of the transmission input shaft in such a way that the transmission gears can fit together.
  • the mounting of the pinion shaft requires great care.
  • the compact design and ease of installation are also important. Therefore, a pair of angular contact ball bearings or a pair of tapered roller bearings are particularly suitable for this purpose. This creates a compact, ready-to-assemble design.
  • the resulting radial and axial forces can be supported well via the clutch or transmission housing.
  • the separate configuration of a bearing housing can be omitted, since the outer ring of the bearing pair is advantageously designed as a flange and is therefore screwed onto the gear housing.
  • the rigid coupling of the electrical machine makes it possible to connect generators with a very high output, which also opens up the possibility of a hybrid drive.
  • Figure 1 is a perspective sectional view of an exemplary arrangement of the electrical machine, driven by a bevel gear pair from the transmission input shaft;
  • Figure 2 is a sectional view of the bearing of the pinion shaft of the electrical machine
  • Figure 3 shows an alternative bearing design for the storage of the pinion shaft.
  • FIG. 1 shows a sectional illustration of an exemplary arrangement of the electrical machine 1 in a perspective view.
  • part of the power transmission of the vehicle from the internal combustion engine can be seen via a disk clutch 5 located in a clutch housing 4 to a transmission input shaft 7.
  • a disk or bevel gear 6 On the end of the transmission input shaft 7 which projects into the clutch housing 4 and is connected in a rotationally fixed manner to the clutch 5, there is a disk or bevel gear 6 which is also connected in a rotationally fixed manner to the transmission input shaft 7, for example by a press connection fertilizer
  • the embodiment shown in FIG. 1 with an active connection between the electrical machine 1 and the transmission input shaft is only exemplary and can also be designed as an active connection between the electrical machine 1 and the output shaft of the internal combustion engine.
  • the coupling of the electrical machine 1 lies in the drive train between the clutch and the internal combustion engine.
  • the gearwheel connection of the electrical machine 1 to the transmission input shaft 7 is designed, for example, as a bevel gearwheel pair 6, 8, as a result of which a 90 ° arrangement of the intermediate shaft 3 to the transmission input shaft 7, which is non-rotatably connected to the rotor of the electrical machine 1 .
  • Such a 90 ° position would also arise if the gear pair 6, 8 were designed with a ring gear and a pinion.
  • a bevel gear pair is also conceivable that enables an angle other than 90 °.
  • an operative connection via conventional gearwheels is possible, which would result in an axially parallel installation position of the electrical machine 1 to the transmission input shaft 7.
  • the gear connection 6, 8 for driving the rotor of the electrical machine 1 is located within the clutch housing. Since in most vehicles such disc clutches located between the internal combustion engine and the manual transmission are designed as so-called dry clutches, the tooth wheel pair 6, 8 thus not sufficiently lubricated. It will therefore be necessary to provide an additional wall, not shown here, by means of which the coupling 5 is spatially separated from the gear pair 6, 8.
  • the transmission input shaft 7 is passed through this partition and provided with a sealing ring. This ensures the oil lubrication of the gearwheel pair 6, 8 connected to the transmission by the transmission ⁇ -1.
  • the electrical machine 1 must accordingly be sealed against the housing 4, which is expediently to be ensured by a sealing ring, for example a sealing ring, on the intermediate shaft 3.
  • the cooling duct in a water-cooled electrical machine 1 is expediently connected via a cooling duct which is guided in the coupling housing 4 and is connected via lines to a cooling duct of the internal combustion engine.
  • the flow rates of the cooling water are set using appropriately adapted pipe diameters. If there is sufficient circulation with sufficiently cool air, water cooling can be dispensed with.
  • FIG. 2 shows an exemplary embodiment of the mounting of the drive shaft of the electrical machine 1 in a sectional illustration. Since the built-in is relatively limited, but the bearing must support large axial and radial forces due to the alternating operation of the electrical machine 1 as a starter or generator, preferably a pair of angular contact ball bearings or a tapered roller bearing is used. In the embodiment shown in Figure 2, a pair of angular contact ball bearings 10 is provided. However, other bearing designs are also conceivable that can serve this purpose.
  • the pinion shaft 3 with the pinion 8 mounted thereon in a rotationally fixed manner has an internal toothing 12 on the other shaft end for the rotationally fixed connection to the rotor shaft 2 of the electrical machine 1.
  • the pair of angular contact ball bearings 10, combined in a 0 arrangement in a common outer ring 14 with flange 15, is pushed onto the pinion shaft 3.
  • the adjustment of the bearing, necessary for the required rigidity, takes place via a shaft nut 16, which is screwed onto a thread on the pinion shaft 3.
  • the pinion unit preassembled in this way is fastened to the housing 4 by means of a plurality of screws 20, centered on a fitting collar 18 on the gearbox or coupling housing 4.
  • the axial fine adjustment is carried out using shims 22. If a lifetime lubrication is provided in the bearing 10 by a grease filling, the sealing rings 24 and 25 seal the interior of the bearing.
  • FIG. 3 shows an alternative bearing design for the mounting of the pinion shaft 3, namely a tapered roller bearing pair 11, which ensures stable axial and radial mounting of the pinion shaft 3 leading to the electrical machine 1 with the pinion 8 located thereon.
  • the flange 15 can also be seen, which has a plurality of bores (not shown here) for screwing to the coupling housing 4.
  • the seals 24 and 25 can be seen, which seal the interior of the bearing with its grease filling.

Abstract

La présente invention concerne le placement d'une machine électrique sur un moteur à combustion interne (1), destiné de préférence à des véhicules, ayant fonction de démarreur lorsque le moteur à combustion interne se met en route, et commuté ensuite de manière à fonctionner comme générateur pour alimenter le réseau électrique de bord. Ladite machine électrique est positionné de telle manière dans le groupe motopropulseur, entre le moteur à combustion interne et la boîte de vitesses du véhicule, qu'elle est constamment en liaison fonctionnelle. Cette liaison fonctionnelle peut être activée par couplage à engrenage conique, ce qui permet la transmission d'une puissance mécanique soutenue.
PCT/DE1998/001228 1997-05-09 1998-05-04 Placement d'une machine a fonction de demarreur-generateur sur un moteur a combustion interne WO1998051926A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19719214 1997-05-09
DE19719214.9 1997-05-09
DE19745997.8 1997-10-20
DE19745997A DE19745997A1 (de) 1997-05-09 1997-10-20 Anordnung einer kombinierten Starter-Generator-Maschine an einer Brennkraftmaschine

Publications (1)

Publication Number Publication Date
WO1998051926A1 true WO1998051926A1 (fr) 1998-11-19

Family

ID=26036384

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/001228 WO1998051926A1 (fr) 1997-05-09 1998-05-04 Placement d'une machine a fonction de demarreur-generateur sur un moteur a combustion interne

Country Status (1)

Country Link
WO (1) WO1998051926A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19911924A1 (de) * 1999-03-17 2000-09-21 Man Nutzfahrzeuge Ag Anordnung und antriebsmäßige Anbindung von Nebenaggregaten an einer Brennkraftmaschine
DE19911925A1 (de) * 1999-03-17 2000-09-21 Man Nutzfahrzeuge Ag Anordnung und antriebsmäßige Anbindung wenigstens eines Anlassers/Generators an einer Brennkraftmaschine
EP1902945A3 (fr) * 2001-09-11 2011-08-17 Yanmar Co. Ltd. Système de génération électrique et de propulsion d'un navire

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450382A1 (fr) * 1979-02-27 1980-09-26 Labourier Robert Coupleur differentiel pour vehicule utilisant deux moteurs dont un thermique et l'autre electrique
DE3117425A1 (de) * 1981-05-02 1982-11-18 Audi Nsu Auto Union Ag, 7107 Neckarsulm Antriebsbaugruppe fuer ein kraftfahrzeug
JPS63198556A (ja) * 1987-02-10 1988-08-17 Mitsubishi Electric Corp エンジンの始動兼充電装置
WO1991008919A1 (fr) * 1989-12-19 1991-06-27 Larguier Rene Groupe moto-propulseur pour vehicules
EP0492152A1 (fr) * 1990-12-21 1992-07-01 MAN Nutzfahrzeuge Aktiengesellschaft Propulsion hybride pour véhicules
DE19730858A1 (de) * 1996-07-24 1998-01-29 Bosch Gmbh Robert Kennungswandler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450382A1 (fr) * 1979-02-27 1980-09-26 Labourier Robert Coupleur differentiel pour vehicule utilisant deux moteurs dont un thermique et l'autre electrique
DE3117425A1 (de) * 1981-05-02 1982-11-18 Audi Nsu Auto Union Ag, 7107 Neckarsulm Antriebsbaugruppe fuer ein kraftfahrzeug
JPS63198556A (ja) * 1987-02-10 1988-08-17 Mitsubishi Electric Corp エンジンの始動兼充電装置
WO1991008919A1 (fr) * 1989-12-19 1991-06-27 Larguier Rene Groupe moto-propulseur pour vehicules
EP0492152A1 (fr) * 1990-12-21 1992-07-01 MAN Nutzfahrzeuge Aktiengesellschaft Propulsion hybride pour véhicules
DE19730858A1 (de) * 1996-07-24 1998-01-29 Bosch Gmbh Robert Kennungswandler

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 481 (E - 694) 15 December 1988 (1988-12-15) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19911924A1 (de) * 1999-03-17 2000-09-21 Man Nutzfahrzeuge Ag Anordnung und antriebsmäßige Anbindung von Nebenaggregaten an einer Brennkraftmaschine
DE19911925A1 (de) * 1999-03-17 2000-09-21 Man Nutzfahrzeuge Ag Anordnung und antriebsmäßige Anbindung wenigstens eines Anlassers/Generators an einer Brennkraftmaschine
EP1902945A3 (fr) * 2001-09-11 2011-08-17 Yanmar Co. Ltd. Système de génération électrique et de propulsion d'un navire

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