EP0851113A1 - Winkelverstellvorrichtung für eine Einspritzpumpenwelle einer Brennkraftmaschine - Google Patents

Winkelverstellvorrichtung für eine Einspritzpumpenwelle einer Brennkraftmaschine Download PDF

Info

Publication number
EP0851113A1
EP0851113A1 EP97403019A EP97403019A EP0851113A1 EP 0851113 A1 EP0851113 A1 EP 0851113A1 EP 97403019 A EP97403019 A EP 97403019A EP 97403019 A EP97403019 A EP 97403019A EP 0851113 A1 EP0851113 A1 EP 0851113A1
Authority
EP
European Patent Office
Prior art keywords
pulley
injection pump
adjustment device
angular
sleeve
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Withdrawn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
EP97403019A
Other languages
English (en)
French (fr)
Inventor
Vincent Baron
Eric Charles
Pascal Le Neel
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.)
Renault SA
Original Assignee
Renault SA
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 Renault SA filed Critical Renault SA
Publication of EP0851113A1 publication Critical patent/EP0851113A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives

Definitions

  • the subject of the present invention is a device for adjusting the angular position of a fuel injection pump shaft intended for equip an internal combustion engine.
  • Injection pumps of combustion engines internal type of those used on engines with compression ignition are mainly of the type volumetric and based on the cam / piston principle.
  • a cam actuated by the pump drive shaft, displaces a piston subjected to the antagonistic action of a return spring so as to charge a quantity predetermined fuel to a given injector.
  • the piston or pistons have roles dispensers or distributors.
  • the shaft drive when the engine is four-stroke, the shaft drive must be driven at half speed engine so as to operate a cylinder injection per cycle, i.e. every two crankshaft turns.
  • the rotation of the pump drive shaft injection is therefore conventionally operated for a four-stroke engine, using the timing belt distribution of the latter.
  • the angular setting of the pump shaft injection usually takes place after immobilized the crankshaft in the neutral position Top of a reference cylinder, by rotating the pulley secured to the shaft until it matches marks carried on the one hand by the belt and on the other hand by the pulley.
  • the angular setting itself then operated by rotating the pump body whose fasteners cooperate with oblong holes, until the distributor the pump corresponding to the reference cylinder in a predetermined position.
  • Such an operation requires an important place as well as a certain flexible pipes.
  • the object of this request is to propose an improvement to the device for adjusting the angular position of the shaft of an injection pump angular internal combustion engine set in rotation with a pulley.
  • the adjustment device angle of a pump drive shaft of injection is characterized in that it comprises a sleeve integral with the drive shaft on which is axially immobilized the pulley and means for adjustments extending between the pulley and the sleeve, these adjustment means which make it possible to operate the angular displacement of the shaft relative to the pulley being made at least in part with materials suitable for low coefficients of friction.
  • the adjustment means consist of a feed ring and a adjustment integral in translation, this ring of adjustment which comprises two series of keys intended to slide in corresponding grooves carried respectively by the pulley and the sleeve, being performed at least as regards the keys with materials suitable for low coefficients of friction.
  • suitable materials incorporate a lubricant in solid form.
  • suitable materials incorporating a lubricant in solid form are based fluorinated polymers such as PTFE.
  • suitable materials are thermoplastics.
  • suitable materials are thermoplastics loaded with glass fibers.
  • angular adjustment device interposed between a pulley 11 intended to cooperate with a toothed belt and the drive shaft 10 of an injection pump not shown, for example of the rotary distributor type comprising a single distributor piston, this piston being both rotated by the shaft drive and moved axially in its housing by a cam plate against the antagonistic action of a return spring, the cam plate also being driven in rotation by the drive shaft.
  • the adjustment device which is the subject of the invention, includes an adapter sleeve 9 made for example in aluminum.
  • the sleeve 9 is secured to the shaft 10 which surrounds it.
  • the coupling in rotation of the sleeve 9 on the shaft 10 is operated using a disk key 4.
  • a nut 5, which is screwed on the axial end threaded from the shaft 10, ensures the axial locking of the sleeve 9.
  • the toothed pulley 11 is mounted free in rotation on corresponding bearing surfaces of the sleeve 9. It is immobilized in axial translation against a radially projecting shoulder of the sleeve 9 to using a flange 8, a hollow screw 7 coming screw inside a threaded bore of the sleeve adapter 9 surrounding the nut 5 and a brake screw 6.
  • Adjusting the angular position of the pulley 11 with respect to the shaft 10 is obtained by adjustment means which make it possible to rotate the shaft 10 relative to the pulley 11 after having immobilized the latter in rotation.
  • These adjustment means consist of two separate rings extending between the sleeve 9 and the pulley 11, these two rings 1 and 3 being integral between them axially but free in rotation one compared to each other.
  • the first ring called advance ring 3 has a single net on its outer surface to cooperate with a thread carried by the central bore in the hub of the pulley 11.
  • This first ring 3 has a projecting annular flange which is received in a corresponding groove carried by the second ring called angular adjustment ring 1.
  • the second ring 1 is made of a material low coefficient of friction, such as TECHNYL which is a PA66 type thermoplastic loaded with glass fibers.
  • This adjustment ring angular 1 comprises coupling means with respectively the pulley 11 and the sleeve 9. These means coupling consist of keys 12, projecting towards the outside of the ring 1, which are intended for slide in corresponding grooves 2 of the toothed pulley 11, and keys 13, projecting towards the inside of the ring 1, which are intended for slide in corresponding grooves 14 of the sleeve 9.
  • This annular ring therefore includes three keys with straight sides 12 regularly distributed on its outer surface which are therefore intended to slide in three grooves 2 corresponding to the toothed pulley 11. These three keys 12 extending inwards by three keys with helical sides 13, which are therefore intended to slide in three helical grooves corresponding 14 machined at the periphery of the sleeve 9.
  • the keys 12, 13 and the corresponding grooves 2, 14 in which they slide are adapted from so that the axial displacement of the ring 1 determines an angular displacement of the drive shaft 10 relative to the pulley.
  • the operation of the adjustment device angular is as follows.
  • the crankshaft not figured from engine being immobilized in a suitable position such that at Top Dead Center of a reference cylinder, we places the toothed belt on the pulley 11 in making the marks carried by the pulley coincide and the belt.
  • This first positioning being carried out the pulley 11 is then immobilized in rotation.
  • an angular adjustment ring 1 made of materials with a low coefficient of friction thus makes it possible to limit the friction between the three keys with helical sides 13 and grooves corresponding fitted at the periphery of the sleeve 9. This reduction in friction limits the wear of the keys 13 and therefore allows the device to keep excellent adjustment precision throughout the engine life, even after many adjustments.
  • the angular adjustment ring 1 according to the invention is therefore made of a material with low coefficient of friction. We can use this fine, all materials meeting the specifications desired mechanical and thermal resistance, which have this characteristic. We can use especially materials that incorporate into their structure itself, a lubricant in solid form, such than a reinforced fluorinated polymer for example a reinforced PTFE of a woven stainless steel frame.
  • the low coefficient of friction of the ring 1 can be obtained by surface treatment, for example by covering it with a coating of NIFLOR.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
EP97403019A 1996-12-31 1997-12-12 Winkelverstellvorrichtung für eine Einspritzpumpenwelle einer Brennkraftmaschine Withdrawn EP0851113A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9616310 1996-12-31
FR9616310A FR2757899B1 (fr) 1996-12-31 1996-12-31 Dispositif de reglage angulaire d'un arbre de pompe d'injection de moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP0851113A1 true EP0851113A1 (de) 1998-07-01

Family

ID=9499382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97403019A Withdrawn EP0851113A1 (de) 1996-12-31 1997-12-12 Winkelverstellvorrichtung für eine Einspritzpumpenwelle einer Brennkraftmaschine

Country Status (2)

Country Link
EP (1) EP0851113A1 (de)
FR (1) FR2757899B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989121A1 (fr) * 2012-04-10 2013-10-11 Peugeot Citroen Automobiles Sa Pompe a carburant comportant un moyen d'indexation entre un arbre d'entree et une roue d'entrainement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2259391A1 (en) * 1974-01-25 1975-08-22 Maillet Raymond Automatic advance for engine injector pump - comprises two inertial masses guided by blocks on rotating disc
US4142498A (en) * 1977-01-17 1979-03-06 Caterpillar Tractor Co. Fuel injection pump timing mechanism
US4337747A (en) * 1980-02-08 1982-07-06 Lucas Industries Limited Fuel injection pumping apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2259391A1 (en) * 1974-01-25 1975-08-22 Maillet Raymond Automatic advance for engine injector pump - comprises two inertial masses guided by blocks on rotating disc
US4142498A (en) * 1977-01-17 1979-03-06 Caterpillar Tractor Co. Fuel injection pump timing mechanism
US4337747A (en) * 1980-02-08 1982-07-06 Lucas Industries Limited Fuel injection pumping apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989121A1 (fr) * 2012-04-10 2013-10-11 Peugeot Citroen Automobiles Sa Pompe a carburant comportant un moyen d'indexation entre un arbre d'entree et une roue d'entrainement

Also Published As

Publication number Publication date
FR2757899B1 (fr) 1999-03-19
FR2757899A1 (fr) 1998-07-03

Similar Documents

Publication Publication Date Title
EP1740810B1 (de) Einstellvorrichtung für einen motor mit veränderlichem verdichtungsverhältnis
EP0100713A1 (de) Dichtungselement für eine Gaszyklus-Regelvorrichtung einer Brennkammer
EP0689642A1 (de) Verbesserte viertaktbrennkraftmaschine mit variablem verdichtungsverhältnis
WO1996014496A1 (fr) Pompe a pistons
FR2786819A1 (fr) Pompe a piston radiaux
FR2475631A1 (fr) Dispositif de debrayage pour l'accouplement et le desaccouplement de vilebrequins
EP0851113A1 (de) Winkelverstellvorrichtung für eine Einspritzpumpenwelle einer Brennkraftmaschine
FR2475629A1 (fr) Moteur a combustion interne comprenant un dispositif de debrayage pour l'accouplement et le desaccouplement d'un premier vilebrequin et d'au moins un second vilebrequin
CA1170520A (fr) Dispositif de pompage et d'injection pour moteur a combustion interne
EP1608893B1 (de) Riemenscheibe, detektionsvorrichtung mit einer derartigen riemenscheibe und brennkraftmaschine mit einer solchen vorrichtung
EP3586045B1 (de) Bewegungsübertragungsvorrichtung für einen verbrennungsmotor
FR3128742A1 (fr) Pompe à haute pression pour moteur à combustion interne de véhicule automobile
EP0267068A1 (de) Keramik-Drehsteuerungsvorrichtung mit unterbrochener Drehsteuerung für Brennkraftmaschine, Kolbenkompressor, oder Pulso-Brennkammer
US20140196692A1 (en) Hydraulically-actuated fuel delivery timing advance mechanism for diesel engines with mechanical fuel injection pumps
FR3040437A1 (fr) Ensemble pour moteur a combustion interne comprenant un systeme de variation de rapport volumetrique
FR2756895A1 (fr) Dispositif de positionnement d'un volant d'inertie de moteur a combustion interne
FR2741396A1 (fr) Dispositif pour la fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne
FR2641577A1 (fr) Procede pour empecher la rotation des segments de pistons
FR2471481A1 (fr) Pompe d'injection de combustible
FR3040436B1 (fr) Ensemble pour moteur a combustion interne comportant un systeme de variation du rapport volumetrique
CH524063A (fr) Pompe d'injection de combustible permettant de réaliser deux injections par cycle dans les moteurs
FR3040459A1 (fr) Bielle pour machine comprenant un piston et un vilebrequin
FR2713278A1 (fr) Dispositif de détection de la position angulaire d'un arbre à cames de moteur à combustion interne.
FR2764959A1 (fr) Dispositif d'articulation entre une bielle et un piston d'un moteur a combustion interne
FR3042572A1 (fr) Procede de montage d’un ensemble piston-bielle a rotule

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid
RBV Designated contracting states (corrected)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19990105