Patent ID: 7318514
Filing Date: 2008-01-15
Classification: C10M,C10N,F16C,F16H,Y10T

Abstract:
1. A low-friction sliding member in a transmission, the sliding member being at least one of a plurality of sliding members which are in slidable contact with each other in the presence of a transmission oil composition, the low-friction sliding member comprising: a base material having a sliding section; and a hard carbon thin film coated at a sliding surface of the sliding section of the base material, the hard carbon thin film containing hydrogen in an amount not more than 20 atomic %, wherein the transmission oil composition comprises at least one organic oxygen-containing compound selected from the group consisting of a monohydric alcohol, a polyhydric alcohol, a carboxylic acid, an ether, a derivative of a monohydric alcohol, a derivative of a polyhydric alcohol, a derivative of a carboxylic acid, a derivative of an ether, a derivative of an ester, the organic oxygen-containing compound being contained in an amount ranging from 0.05 to 3.0% based on total amount of the transmission oil composition, and wherein the transmission comprises a continuously variable transmission.