EP 0902169 A1 19990317 - Mechanical device for varying the phase between a drive shaft and a camshaft of an internal combustion engine
Title (en)
Mechanical device for varying the phase between a drive shaft and a camshaft of an internal combustion engine
Title (de)
Mechanische Vorrichtung zur Winkelverstellung einer Nockenwelle gegenüber einem Antriebsrad in einer Brennkraftmaschine
Title (fr)
Dispositif mécanique pour varier la phase entre un arbre à cames et son entraînement dans un moteur à combustion interne
Publication
Application
Priority
IT PD970198 A 19970911
Abstract (en)
In a mechanical device for varying the phase between a drive shaft and a camshaft (3) of an internal combustion engine, in which the phase variation is achieved by varying the angular position of a body (5), connected kinematically to the drive shaft, relative to that of a shaft (2), connected kinematically to the camshaft (3), by the movement of a piston (4) interposed between the body and the shaft to each of which it is connected by toothed portions (15 17), there are provided stop means (30) for stopping the relative rotation of the body and the shaft, causing the piston (4) to be stopped by engagement in the toothed portions (16, 18) of the shaft (2) and of the body (5) in the stop positions. At least one of those toothed portions has at least one gap (36, 38, 40) in the axial profile of the respective sides of the toothed portions (16, 18), which gap is in a position such that it straddles the edge (19, 20) of the piston (4) in the corresponding stop position. The gap extends for a distance adjacent to the toothed portion (15, 17) of the piston (4) and for a further distance beyond that toothed portion in the direction of further travel beyond the stop position. <IMAGE>
IPC 1-7
IPC 8 full level
F01L 1/344 (2006.01)
CPC (source: EP)
F01L 1/34406 (2013.01)
Citation (applicant)
EP 0711238 A1 19960515 - LOSI BRUNO [IT]
Citation (search report)
- [A] EP 0742350 A2 19961113 - CARRARO SPA [IT]
- [A] EP 0702132 A2 19960320 - NIPPON DENSO CO [JP]
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
EP 0902169 A1 19990317; EP 0902169 B1 20020626; DE 69806211 D1 20020801; DE 69806211 T2 20030227; IT 1294653 B1 19990412; IT PD970198 A1 19990311
DOCDB simple family (application)
EP 98203013 A 19980909; DE 69806211 T 19980909; IT PD970198 A 19970911