EP0136384A1 - Accouplement pour poulie de vilebrequin de moteur - Google Patents

Accouplement pour poulie de vilebrequin de moteur Download PDF

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Publication number
EP0136384A1
EP0136384A1 EP83401933A EP83401933A EP0136384A1 EP 0136384 A1 EP0136384 A1 EP 0136384A1 EP 83401933 A EP83401933 A EP 83401933A EP 83401933 A EP83401933 A EP 83401933A EP 0136384 A1 EP0136384 A1 EP 0136384A1
Authority
EP
European Patent Office
Prior art keywords
engine
crankshaft
output shaft
power output
vehicle
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Withdrawn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
EP83401933A
Other languages
German (de)
English (en)
Inventor
Allen W. Dejong
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.)
Canadian Fram Ltd
Original Assignee
Canadian Fram 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 Canadian Fram Ltd filed Critical Canadian Fram Ltd
Priority to EP83401933A priority Critical patent/EP0136384A1/fr
Publication of EP0136384A1 publication Critical patent/EP0136384A1/fr
Withdrawn legal-status Critical Current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
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/001—Arrangements thereof
    • 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
    • F02B67/06—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 driven by means of chains, belts, or like endless members
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/06—Endless member is a belt

Definitions

  • This Invention relates to an automobile in which the belt driven engine accessories are disconnected when the vehicle is cranked upon starting and when the vehicle is accelerated.
  • the present invention proposes that all of the belt driven engine accessories are disconnected when the vehicle engine is started or when the vehicle engine is accelerated, but are reconnected when the engine starts, when a vehicle acceleration is terminated, or after a predetermined time period has elapsed during a vehicle acceleration to prevent damage to the engine components during a long acceleration.
  • the power robbing effects of the belt driven accessories are eliminated during an engine acceleration, thereby providing an increase in acceleration and power similar to that provided by supercharging or terbocharging, at a fraction of the cost.
  • a substantial reduction in starting drag is provided, thereby permitting use of smaller, and therefore lighter weight, batteries and less powerful starting motors.
  • the device proposed by the present invention is associated with a motor vehicle having an engine, a starting motor for cranking the engine when the latter is started, a plurality of belt driven accessories driven by the engine which has a power output shaft, and drive belt means interconnecting the power output shaft with the accessories for providing a driving connection therebetween.
  • the present clutch disconnects the accessories during the lag time between the time the throttle is moved in a full accelerating position and the engine responds.
  • the belt-driven accessories are disconnected before the engine and vehicle begin accelerating, removing the parasitic drag of the accessories and thereby boosting engine power.
  • a control is also provided to provide an electrical signal disconnecting the clutch when the engine is cranked, thereby also removing the parasitic drag of the belt-driven engine accessories when the engine is started.
  • the present device is characterized in that an electrically actuated clutch is provided between the power output shaft of the engine and the drive belt means, and switch means for causing the electrically actuated clutch to disengage when the starter motor cranks the engine and when the engine is started, and also when the engine is accelerated.
  • the present invention has the advantage of disconnecting the belt-driven accessories when the vehicle throttle lever is moved to an accelerative position. Accordingly, the accessories are disconnected during the lag time between the time the vehicle throttle is moved into accelerated position and the engine responds, so that the parasitic drag of the belt-driven engine accessories is removed during the engine acceleration. Furthermore, starting of the engine is facilitated because the belt-driver accessories, which consume a substantial fraction of the total power of the starting motor when the engine is cranked, are also disconnected when the engine Is started. In this way, since the belt-driven accessories are disconnected during engine acceleration, a.i effect similar to providing a supercharger or turbocharger on the engine Is achieved, but at a substantially lower cost.
  • a supercharger Is a belt-driven engine accessory
  • use of the supercharger adds to the difficulty in starting the engine.
  • the present invention facilitates engine starting.
  • a substantial weight reduction over a turbocharger or supercharger is provided by the present invention, since the supercharger and the turbocharger add weight to the vehicle engine, and any weight added by the clutch provided in the present invention Is offset by reduction in the battery weight.
  • a smaller engine may be used while obtaining performance similar to a larger engine, thereby providing substantial fuel savings.
  • Figure 1 illustrates schematically a typical vehicle engine generally indicated by the numeral 10.
  • the engine 10 is typically a relatively small engine used on a relatively heavy vehicle such that a substantial percentage of the power output of the engine is necessary to accelerate the vehicle and the engine drag provided by the engine accessories represents a substantial proportion of the power available.
  • the engine 10 is illustrated as a V-6 engine, the invention is perhaps even more applicable to smaller four-cylinder engines.
  • the typical vehicle engine Includes a crankshaft 12 which mounts a clutch and pulley assembly 14.
  • a drive belt 16 interconnects the assembly 14 with a pulley 18 driving the vehicle air pump; a pulley 20 which drives the vehicle air conditioning compressor; a pulley 22 which drives the vehicle alternator; a pulley 24 which drives the vehicle power steerIng pump, and a pulley 26 which drives the vehicle water pump and which also drives a shaft 28 to which the fan of the vehicle is secured.
  • a slip ring assembly 30 and electrical lead 32 transmit an electrical signal actuating the clutch and pulley assembly 14.
  • the clutch mechanism which couples and uncouples the crankshaft 12 and pulley 14 is disclosed in detail.
  • the clutch mechanism is substantially similar to the clutch mechanism Illustrated in my prior U.S. Patent No. 4,239,095, owned by the assignee of the present invention.
  • the clutch and pulley assembly 14 includes a driving member 34 which is mounted for rotation with the crankshaft 12, so that the driving member 34 is rotated by operation of the engine.
  • the clutch and pulley assembly 14 also includes a pulley 36 mounted for rotation relative to crankshaft 12 by bearing 38.
  • the pulley 36 has a conventional V-groove 40 which receives the belt 16.
  • the slip ring assembly 30 is carried on the outer end of the crankshaft 12 and Includes a member 42 which is fixed for rotation with the crankshaft 12 and a slip member 44 which is mounted so that the member 42 can rotate relative to the member 44.
  • Connecting wires 32, 46 extend from the members 42 and 44 respectively, so that an electrical connection is provided between the connecting wires 32 and 46 by the members 42 and 44 of the slip ring assembly 30.
  • the connecting wires 32 and 46 are connected as illustrated in Figure 4, which will be described in detail hereinafter.
  • the driving member 34 also carries a circumferentially extending bracket 48 which is made of magnetic material and which is mounted for rotation with the criving member 39.
  • the bracket 48 includes a pair of axially spaced, circumferentially extending pole piece portions 50, 52 which circumscribe the driving member 34 and which cooperate with one another to define a cavity 54 therebetween.
  • An electromagnetic coil 56 is disposed in the cavity 54, and comprises windings which are wrapped circumferentially around the driving member 34.
  • the coil 56 is connected to the connecting wire 46, so that when an electrical signal Is transmitted through the connecting wire 46, electrical current will be transmitted to the coil 56 by the connecting wire 46, the slip ring 30, and the connecting wire 32.
  • the pulley 36 includes an axially projecting, ctrcumferential- ly extending surface 58 which circumscribes the pole piece portions 50 and 52. Surface 58 of the pulley 36 cooperates with the outer c'rcumferential edges 60, 62 of the pole piece portions 50 and 52 to define a gap 64 therebetween.
  • a circumferentially extending band 66 is disposed in the gap 64.
  • the band 66 includes an Inner band member 68 and an outer band member generally indicated by the numeral 70.
  • the Inner band member 68 is made from magnetic material, as are the pole pieces 50, 52, so that a magnetic circuit is defined consisting of pole piece portions 50, 52, and the inner band member 68.
  • the outer peripheral portions 72, 74 of the radially Inner edge of the inner band member 68 are adapted to engage the outer circumferential ecges 60, 62 of the pole piece portions 50, 52 when the clutch Is engaged. Accordingly, it will be noted that the inner band member 68 bridges the cavity 54 in which the magnetic coil 56 is housed.
  • the outer band member 70 includes a strip of resilient, nonmagnetic material 76 and a corresponding strip of a frictional material 78 which is bonded to the outer circumferential surface of the strip 76.
  • the strip of frictional material 78 may be of any conventional type well-known to those skilled in the art.
  • the magnetic coil 56 is illustrated schematically and is connected through leads 46, 32 and slip ring 30 to one terminal of a conventional throttle position switch 82.
  • the throttle position switch is normally closed, but opens when the vehicle throttle lever is moved to a predetermined position when the vehicle is accelerated.
  • a timer 84 is connected to the switch 82 to close the switch 82 a predetermined time period after It is opened, so that the water pump will not be disconnected for a sufficiently long time period to cause engine damage.
  • the switch 82 is connected In series with the vehicle ignition switch 86. ignition switch 86 is movable between "start” and “run” positions. When the ignition switch is moved to the "start” position for engine cranking, the circuit between the battery 88 and the coil 56 is intercepted.
  • the switch 82 is opened to thereby again permit the crankshaft 12 to rotate relative to the pulley 36 so that the belt-driven engine accessories are also disconnected during engine accelerations, to improve vehicle performance by eliminating the power drag of the belt-driven accessories.
  • the timer 84 closes switch 82 after a predetermined time period even if the throttle lever remains In a position which would otherwise cause the switch 82 to remain open. Since the engine may be damaged If some of the accessories, such as the water pump, remain turned off for too long a time period, the timer 84 is necessary to make sure the switch 82 is closed after a relatively brief time period.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
EP83401933A 1983-10-03 1983-10-03 Accouplement pour poulie de vilebrequin de moteur Withdrawn EP0136384A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP83401933A EP0136384A1 (fr) 1983-10-03 1983-10-03 Accouplement pour poulie de vilebrequin de moteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83401933A EP0136384A1 (fr) 1983-10-03 1983-10-03 Accouplement pour poulie de vilebrequin de moteur

Publications (1)

Publication Number Publication Date
EP0136384A1 true EP0136384A1 (fr) 1985-04-10

Family

ID=8191446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401933A Withdrawn EP0136384A1 (fr) 1983-10-03 1983-10-03 Accouplement pour poulie de vilebrequin de moteur

Country Status (1)

Country Link
EP (1) EP0136384A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996009464A1 (fr) * 1994-09-23 1996-03-28 Regie Nationale Des Usines Renault Dispositif d'entrainement des accessoires d'un moteur a combustion interne de vehicule automobile
EP1043499A1 (fr) * 1999-04-08 2000-10-11 Bayerische Motoren Werke Aktiengesellschaft Méthode et dispositif pour empêcher le glissement de courroie
EP1126143A3 (fr) * 2000-02-18 2002-07-31 Volkswagen Aktiengesellschaft Dispositif d'entraínement d'au moins un auxiliaire d'un moteur à combustion
WO2005028901A1 (fr) 2003-09-17 2005-03-31 Plastech Engineering Gmbh Entrainement a groupe auxiliaire destine a un moteur de vehicule comportant une poulie a courroie decouplable et groupe auxiliaire
GB2449099A (en) * 2007-05-09 2008-11-12 Paul Clifford Vehicle Power Management System
FR2929176A1 (fr) * 2008-04-01 2009-10-02 Peugeot Citroen Automobiles Sa Procede de commande d'un embrayage d'une poulie et vehicule.
CN102859222A (zh) * 2010-02-09 2013-01-02 标致·雪铁龙汽车公司 轴和带轮之间的联接装置和适合安装到机动车中的发动机组
WO2014146659A1 (fr) * 2013-03-19 2014-09-25 Schaeffler Technologies Gmbh & Co. Kg Procédé de commande d'un embrayage électromagnétique d'un véhicule automobile et dispositif pour mettre en œuvre un tel procédé
US8844278B2 (en) 2009-12-23 2014-09-30 Caterpillar Inc. System and method for controlling an electro-hydraulic charging system
CN108999736A (zh) * 2018-09-10 2018-12-14 常熟理工学院 一种柴油机减阻起动装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2066972A1 (fr) * 1969-11-04 1971-08-13 Daimler Benz Ag
US3712766A (en) * 1971-11-08 1973-01-23 Curtiss Wright Corp Rotary internal combustion engine with low starting drag
GB2069595A (en) * 1980-02-07 1981-08-26 Borg Warner Drive system for internal combustion engine accessories

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2066972A1 (fr) * 1969-11-04 1971-08-13 Daimler Benz Ag
US3712766A (en) * 1971-11-08 1973-01-23 Curtiss Wright Corp Rotary internal combustion engine with low starting drag
GB2069595A (en) * 1980-02-07 1981-08-26 Borg Warner Drive system for internal combustion engine accessories

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996009464A1 (fr) * 1994-09-23 1996-03-28 Regie Nationale Des Usines Renault Dispositif d'entrainement des accessoires d'un moteur a combustion interne de vehicule automobile
FR2724881A1 (fr) * 1994-09-23 1996-03-29 Renault Dispositif d'entrainement des accessoires d'un moteur a combustion de vehicule automobile
EP1043499A1 (fr) * 1999-04-08 2000-10-11 Bayerische Motoren Werke Aktiengesellschaft Méthode et dispositif pour empêcher le glissement de courroie
DE19915834C1 (de) * 1999-04-08 2000-11-16 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zur Vermeidung eines Riemenschlupfes
EP1126143A3 (fr) * 2000-02-18 2002-07-31 Volkswagen Aktiengesellschaft Dispositif d'entraínement d'au moins un auxiliaire d'un moteur à combustion
WO2005028901A1 (fr) 2003-09-17 2005-03-31 Plastech Engineering Gmbh Entrainement a groupe auxiliaire destine a un moteur de vehicule comportant une poulie a courroie decouplable et groupe auxiliaire
GB2449099A (en) * 2007-05-09 2008-11-12 Paul Clifford Vehicle Power Management System
FR2929176A1 (fr) * 2008-04-01 2009-10-02 Peugeot Citroen Automobiles Sa Procede de commande d'un embrayage d'une poulie et vehicule.
US8844278B2 (en) 2009-12-23 2014-09-30 Caterpillar Inc. System and method for controlling an electro-hydraulic charging system
CN102859222A (zh) * 2010-02-09 2013-01-02 标致·雪铁龙汽车公司 轴和带轮之间的联接装置和适合安装到机动车中的发动机组
CN102859222B (zh) * 2010-02-09 2015-11-25 标致·雪铁龙汽车公司 轴和带轮之间的联接装置和适合安装到机动车中的发动机组
WO2014146659A1 (fr) * 2013-03-19 2014-09-25 Schaeffler Technologies Gmbh & Co. Kg Procédé de commande d'un embrayage électromagnétique d'un véhicule automobile et dispositif pour mettre en œuvre un tel procédé
CN108999736A (zh) * 2018-09-10 2018-12-14 常熟理工学院 一种柴油机减阻起动装置
CN108999736B (zh) * 2018-09-10 2020-11-03 常熟理工学院 一种柴油机减阻起动装置

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

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Effective date: 19851210

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Inventor name: DEJONG, ALLEN W.