EP1721068B1 - Dispositif regulateur destine aux petits moteurs thermiques - Google Patents

Dispositif regulateur destine aux petits moteurs thermiques Download PDF

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Publication number
EP1721068B1
EP1721068B1 EP04805684A EP04805684A EP1721068B1 EP 1721068 B1 EP1721068 B1 EP 1721068B1 EP 04805684 A EP04805684 A EP 04805684A EP 04805684 A EP04805684 A EP 04805684A EP 1721068 B1 EP1721068 B1 EP 1721068B1
Authority
EP
European Patent Office
Prior art keywords
tension
motor speed
lever
spring
regulation
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
EP04805684A
Other languages
German (de)
English (en)
Other versions
EP1721068A1 (fr
Inventor
Claude Cavaciuti
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.)
Simcoo SARL
Original Assignee
Simcoo SARL
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 Simcoo SARL filed Critical Simcoo SARL
Priority to PL04805684T priority Critical patent/PL1721068T3/pl
Publication of EP1721068A1 publication Critical patent/EP1721068A1/fr
Application granted granted Critical
Publication of EP1721068B1 publication Critical patent/EP1721068B1/fr
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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/04—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by mechanical control linkages
    • 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
    • F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0208—Arrangements; Control features; Details thereof for small engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/023—Engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0264—Arrangements; Control features; Details thereof in which movement is transmitted through a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/06—Small engines with electronic control, e.g. for hand held tools

Definitions

  • the present invention relates to the field of mechanics and more particularly to motorization machines.
  • It relates more particularly to a regulator device for small thermal engines 2 or 4 times.
  • the subject of the invention is therefore a device for regulating the speed of the engine, which consists of modifying the tension of the regulation spring by means of a tension tab which is folded inwards or towards the engine. outside, under the influence of a tilting means rotatably mounted about an axis of rotation and driving the tension spring about a median position between a tension position and a spring expansion position.
  • the control system according to the invention further comprises a protection device of the housing type, consisting of a plate preventing the collision of all the points of the control system by foreign objects, to hide the system in the eyes of the user, so that it is not tempted to change the setting, and thus to disrupt it, and thus make it very difficult to change the engine speed adjustment without having appropriate tools.
  • a protection device of the housing type consisting of a plate preventing the collision of all the points of the control system by foreign objects, to hide the system in the eyes of the user, so that it is not tempted to change the setting, and thus to disrupt it, and thus make it very difficult to change the engine speed adjustment without having appropriate tools.
  • the tension tab is in the form of a rigid metal plate, terminated by a deformable arm where is fixed the tension spring.
  • the tension spring is secured at the other end to the tilting lever controlled by the regulating pin exiting the engine cylinder.
  • the present device ensures the increase or decrease of decreasing the tension of the control spring and, consequently, the speed of the motor by folding a tab which acts on the tension of the control spring.
  • the document US5,722,369 discloses a fuel injection pump which comprises a regulating spring and an adjustable idling spring (8) fixedly attached to the housing.
  • the idle spring (8) is adjusted, by means of a coupling system, between a minimum idle position and a maximum idle position according to a setting of the throttle (22).
  • the device according to the invention therefore aims to simplify the throttle control and the adjustment of the maximum speed of the engine, significantly reduce manufacturing costs, improve the accuracy of the engine speed adjustment for better compliance with the "noise" standard of the gardening equipment on which the motor is applied and, at the same time, to improve the protection of the assembly so as to prevent, and even forbid the unsuspecting user to make any changes as well caused by an accidental cause as resulting from a voluntary intervention of the user.
  • the device according to the invention is intended to be used on small thermal engines tumbled (OHV) or overhead camshaft (OHC).
  • OHC overhead camshaft
  • the single figure shows in plan the control device according to the invention. It comprises the following parts, seen from above.
  • the spring (D) is fixed to the end of the plate (C). In this way, any movement of the lever (C) around the axis (E) is transmitted to the spring (D).
  • the regulation of the engine speed (3000 rpm) is effected by deformation applied to the point (G) of the adjustment lever.
  • the maximum speed increases. If the tension of the spring is decreased by bringing it into position (G "), the maximum engine speed decreases.
  • the entire control device is protected from external shocks by the protections (H) and (H ').
  • the tilting lever (C) is controlled by one or more vertical control levers (F ') and (F ").

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Description

  • La présente invention se rapporte au domaine de la mécanique et plus particulièrement aux engins de motorisation.
  • Elle a plus particulièrement pour objet un dispositif régulateur destiné aux petits moteurs thermiques à 2 ou 4 temps.
  • Elle a spécifiquement pour objet un dispositif de régulation destiné à l'ensemble des petits moteurs thermiques, utilisés principalement sur des matériels de jardinage, tels que tondeuses à gazon, motoculteurs, pompes à eau, groupes électrogènes, etc...
  • L'invention a donc pour objet un dispositif de régulation du régime du moteur qui consiste en ce que l'on modifie la tension du ressort de régulation au moyen d'une patte de tension que l'on plie vers l'intérieur ou vers l'extérieur, sous l'influence d'un moyen de basculement monté rotatif autour d'un axe de rotation et entraînant le ressort de tension autour d'une position médiane entre une position de tension et une position de détente du ressort.
  • Le système de régulation selon l'invention comporte, en outre, un dispositif de protection du type carter, constitué par une plaque empêchant la collision de tous les points du système de régulation par des objets étrangers, pour cacher le système aux yeux de l'utilisateur, afin que celui-ce ne soit pas tenté d'en modifier le réglage, et ainsi de le dérégler, et de rendre ainsi très difficile toute opération de modification du réglage du régime moteur sans disposer d'un outillage approprié.
  • La patte de tension se présente sous la forme d'une plaque métallique rigide, terminée par un bras déformable où vient se fixer le ressort de tension. Le ressort de tension est assujetti à l'autre extrémité au levier de basculement commandé par l'axe régulateur sortant du cylindre moteur.
  • A la différence de la très grande majorité des systèmes de régulation mécaniques centrifuges, dans lesquels le réglage du régime du moteur est obtenu par modification de la tension du ressort de régulation, et qui peut se dérégler, le présent dispositif assure l'augmentation ou la diminution de la tension du ressort de régulation et, par voie de conséquence, le régime du moteur par pliage d'une patte qui agit sur la tension du ressort de régulation.
  • Le document US 5,722,369 décrit une pompe à injection de carburant qui comprend un ressort de régulation et un ressort de ralenti réglable (8) fixé à demeure au carter. Le ressort de ralenti (8) se règle, au moyen d'un système d'accouplement, entre une position de ralenti minimale et une position de ralenti maximale en fonction d'un réglage de la manette des gaz (22).
  • Le dispositif selon l'invention a donc pour but de simplifier la commande d'accélérateur ainsi que le réglage du régime maximum du moteur, de réduire de manière importante les coûts de fabrication, d'améliorer la précision du réglage du régime moteur pour un meilleur respect de la norme « bruit » du matériel de jardinage sur lequel ledit moteur est appliqué et, en même temps, d'améliorer la protection de l'ensemble de façon à empêcher, voire même interdire, à l'utilisateur non averti d'apporter toute modification éventuelle aussi bien provoquée par une cause accidentelle que résultant d'une manière volontaire de l'intervention de l'utilisateur.
  • Le dispositif selon l'invention est destinée à être utilisé sur des petits moteurs thermiques culbutés (OHV) ou à arbre à cames en tête (OHC). On réalise ainsi une application particulière, à savoir le maintient d'un régime fixe sur moteur OHV et sur moteur OHC.
  • La figure unique montre en plan le dispositif de régulation selon l'invention. Il comporte les pièces suivantes, vue par au-dessus. On voit, en A, la plaque de fixation du levier de régulation, en (C) le levier de régulation, en (D), le ressort de régulation et en (E) l'axe de régulation monté rotatif permettant le basculement du levier de régulation (C). Le ressort (D) est fixé à l'extrémité de la plaque (C) De cette façon, tout déplacement du levier (C) autour de l'axe (E) se transmet au ressort (D).
  • Avec un tel dispositif, la régulation du régime du moteur (3000 t/min) est effectuée par déformation appliquée au point (G) du levier d'ajustement. En augmentant la tension du ressort vers la position (G'), le régime maximum augmente. Si l'on diminue la tension du ressort en l'amenant en position (G"), le régime maximum du moteur diminue.
  • De cette façon, on peut régler d'une manière permanente le régime du moteur et on peut opérer, selon les besoins, à un régime de moteur constant approprié pour le travail demandé et homologué.
  • L'ensemble du dispositif de régulation est protégé des chocs extérieurs par les protections (H) et (H'). Le levier de basculement (C ) est commandé par un ou des leviers verticaux de régulation (F') et (F").

Claims (5)

  1. Utilisations d'un dispositif de régulation du régime d'un moteur thermique de petite puissance à une valeur fixe, par variation de la tension d'un ressort (D) placé sur l'axe régulateur sortant du cylindre moteur assujetti à un levier de régulation (C) le dit levier de régulation (C) comportant à l'extrémité opposée une patte de tension (A) réglable, formée d'un bras déformable (L) pourvu d'un ressort, et dans laquelle la tension du ressort (D) est modifiable autour d'une position médiane (G), placée entre une position de tension (G") et une position de détente (G') par basculement de la patte de tension (A) dans laquelle la patte de tension (A) est constituée par une pièce métallique rigide terminée par un bras (L), support du ressort de tension (D) et le dispositif de régulation comprend un levier de basculement (C), assujetti à un levier vertical de régulation (F',F"), placé sur l'axe régulateur sortant du moteur.
  2. Utilisation du dispositif de régulation du régime du moteur selon la revendication 1 pour réaliser des moteurs thermiques culbutés à régime fixe.
  3. Utilisation du dispositif de régulation du régime du moteur selon la revendication 2 pour réaliser des moteurs thermiques culbutés du type OHV à régime fixe.
  4. Utilisation du dispositif de régulation du régime du moteur selon la revendication 2 pour réaliser des moteurs thermiques culbutés du type OHC à régime fixe.
  5. utilisation du dispositif de régulation du régime du moteur selon l'une des revendications précédentes en vue de la réalisation de matériel de jardinage, choisi parmi les tondeuses à gazon, les motoculteurs, les pompes à eau, et les groupes électrogènes.
EP04805684A 2003-12-12 2004-12-10 Dispositif regulateur destine aux petits moteurs thermiques Expired - Lifetime EP1721068B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04805684T PL1721068T3 (pl) 2003-12-12 2004-12-10 Urządzenie regulacyjne przeznaczone dla małych silników cieplnych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0314586A FR2863663B1 (fr) 2003-12-12 2003-12-12 Dispositif regulateur destine aux petits moteurs thermiques
PCT/FR2004/003186 WO2005059334A1 (fr) 2003-12-12 2004-12-10 Dispositif regulateur destine aux petits moteurs thermiques

Publications (2)

Publication Number Publication Date
EP1721068A1 EP1721068A1 (fr) 2006-11-15
EP1721068B1 true EP1721068B1 (fr) 2011-09-28

Family

ID=34610608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04805684A Expired - Lifetime EP1721068B1 (fr) 2003-12-12 2004-12-10 Dispositif regulateur destine aux petits moteurs thermiques

Country Status (5)

Country Link
EP (1) EP1721068B1 (fr)
AT (1) ATE526497T1 (fr)
FR (1) FR2863663B1 (fr)
PL (1) PL1721068T3 (fr)
WO (1) WO2005059334A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1478516A (fr) * 1966-03-10 1967-04-28 Cem Comp Electro Mec Perfectionnements aux dispositifs automatiques de démarrage pour moteurs asynchrones
JPS5910762A (ja) * 1982-07-07 1984-01-20 Yanmar Diesel Engine Co Ltd 内燃機関用調速装置
DE3406119A1 (de) * 1984-02-21 1985-08-22 Fa. Andreas Stihl, 7050 Waiblingen Zweitaktmotor
DE3931144A1 (de) * 1989-09-19 1991-03-28 Daimler Benz Ag Betaetigungsvorrichtung fuer eine in einer ansaugleitung einer dieselbrennkraftmaschine angeordneten drosselklappe
FR2720786B1 (fr) * 1994-06-07 1996-07-26 Renault Dispositif de commande du débit d'une pompe d'injection et mécanisme de régulation de la vitesse de croisière d'un véhicule équipé d'une telle pompe.
DE4443114A1 (de) * 1994-12-03 1996-06-05 Bosch Gmbh Robert Kraftstoffeinspritzpumpe für Brennkraftmaschinen
US6612286B1 (en) * 2002-07-15 2003-09-02 Textron Inc. Governor system for gasoline powered vehicles

Also Published As

Publication number Publication date
WO2005059334A8 (fr) 2005-10-27
FR2863663B1 (fr) 2006-06-16
EP1721068A1 (fr) 2006-11-15
PL1721068T3 (pl) 2012-04-30
ATE526497T1 (de) 2011-10-15
FR2863663A1 (fr) 2005-06-17
WO2005059334A1 (fr) 2005-06-30

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