Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1999-07-28
2000-03-07
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9037, F01L 1344
Patent
active
060326263
ABSTRACT:
A vane-type camshaft adjusting device for an internal combustion engine, comprising a drive pinion (2) connected in driving relationship to a crankshaft, and a winged wheel (8) connected rotationally fast to a camshaft (7), the drive pinion (2) comprises a hollow space (6) which is defined by a circumferential wall (3) and two side walls (4, 5), into which hollow space (6) is inserted the winged wheel (8) having at least one wing (10) on its wheel hub (9), limiting walls (11) defining at least one working chamber (13) in the hollow space (6) of the drive pinion (2), which working chamber (13) is divided into two hydraulic pressure chambers (16, 17) by a wing (10) of the winged wheel (8) with the limiting walls (11) of the drive pinion (2) in sealing contact by axial sealing elements or by sealing gaps with the wheel hub (9) of the winged wheel (8), while the wings (10) of the winged wheel (8) are in sealing contact by axial sealing elements with the circumferential wall (3) of the drive pinion (2) wherein the free end face (14) of each wing (10) of the winged wheel (8) and/or the free end face (12) of each limiting wall (11) of the drive pinion (2) comprises an elastic sealing spring (18) which is configured as a one-piece sealing element between two pressure chambers (16, 17) of the device (1) and which can be pressed by the pressure of the hydraulic pressure medium against the inner surface of the circumferential wall (3) of the drive pinion (2) or against the wheel hub (9) of the winged wheel (8).
REFERENCES:
patent: 5794577 (1998-08-01), Kira
patent: 5823152 (1998-10-01), Ushida
patent: 5860397 (1999-01-01), Schafer
patent: 5875750 (1999-03-01), Iwasaki et al.
Ina Walzlager Schaeffler OHG
Lo Weilun
LandOfFree
Device for varying valve timing of gas exchange valves of intern does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for varying valve timing of gas exchange valves of intern, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for varying valve timing of gas exchange valves of intern will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-353584