| 摘要 |
PCT No. PCT/JP94/00922 Sec. 371 Date Dec. 11, 1995 Sec. 102(e) Date Dec. 11, 1995 PCT Filed Jun. 8, 1994 PCT Pub. No. WO94/29581 PCT Pub. Date Dec. 22, 1994The present invention is concerned with a torque variation restraining device of an engine accessory driving system. It is possible to reduce the gear grating noise of the engine gear system and reduce a load on the gear tooth surfaces by restraining torque and/or rotation variations of the driving shaft and the gear system, which variations are generated as the driven torque of the engine accessory varies sharply. For this purpose, a compartment is provided between a retainer housing (4) and the driving shaft (1) of the engine accessory, a friction damper (6) which surrounds the outer periphery of the driving shaft (1) is disposed in this compartment, and an oil supply means (10) introduces engine lubricating oil between the friction damper (6) and the retainer housing (4). The friction damper (6) is brought into contact with the driving shaft (1) by a lubricating oil pressure, and the frictional braking force to the driving shaft (1) resulting from this contact increases as the lubricating oil pressure increases with an increase in the engine rotation speed.
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