초록 ▼

A thrust bearing arrangement for a turbocharger including a thrust bearing unit having separate normal and reverse thrust bearings, and a thrust member provided on a turbine shaft and interposed between the normal and reverse thrust bearings. Both the normal and reverse thrust bearings are spaced fr

A thrust bearing arrangement for a turbocharger including a thrust bearing unit having separate normal and reverse thrust bearings, and a thrust member provided on a turbine shaft and interposed between the normal and reverse thrust bearings. Both the normal and reverse thrust bearings are spaced from the turbine shaft in a radial direction of the turbine shaft and a lubrication oil is supplied to a first contact area between the normal thrust bearing and the thrust member. An oil guide portion is formed on a bearing housing for further supplying the lubrication oil to a second contact area between the thrust member and the reverse thrust bearing. A seal member is provided on the turbine shaft in slidable contact with an inner peripheral face of the normal thrust bearing.

대표청구항 ▼

[ What is claimed is:] [1.] A thrust bearing arrangement for a turbocharger, comprising:a thrust bearing unit having both a normal thrust bearing and a reverse thrust bearing separate from the normal thrust bearing, the normal and reverse thrust bearings being spaced from each other in an axial dire

[ What is claimed is:] [1.] A thrust bearing arrangement for a turbocharger, comprising:a thrust bearing unit having both a normal thrust bearing and a reverse thrust bearing separate from the normal thrust bearing, the normal and reverse thrust bearings being spaced from each other in an axial direction of a turbine shaft and spaced from the turbine shaft in a radial direction of the turbine shaft;a bearing housing for housing the thrust bearing unit with both the normal and reverse thrust bearings being fixed to the bearing housing;said normal thrust bearing having a normal pad surface facing axially of said turbine shaft and said reverse thrust bearing having a reverse pad surface facing axially of said turbine shaft in the direction opposite to that of the normal thrust bearing;said normal and reverse pad surfaces being spaced from one another axially of the turbine shaft and facing one another;a single thrust member provided on the turbine shaft and having two bearing surfaces facing in opposite directions axially of the turbine shaft, said thrust member being interposed between the normal and reverse pad surfaces of the normal and reverse thrust bearings with said two bearing surfaces being engageable respectively with the normal and reverse pad surfaces of the normal and reverse thrust bearings, and with a lubrication oil being supplied to a first contact area between the normal thrust bearing and the thrust member;a guide portion formed on the bearing housing for further supplying the lubrication oil to a second contact area between the thrust member and the reverse thrust bearing; anda seal member provided on the turbine shaft and received in a spacing between the normal thrust bearing and the turbine shaft such that the seal member is in slidable contact with an inner periphery of the normal thrust bearing.