Multi-thickness film layer bearing cartridge and housing
View Patent ↗An exemplary squeeze film bearing cartridge for a turbocharger includes a center section, two outer sections having a first outer diameter and two intermediate sections having a second outer diameter, the intermediate sections positioned intermediate the center section and a respective one of the outer sections and wherein the first outer diameter exceeds the second outer diameter. Various exemplary bearing cartridges, housings, assemblies, etc., are also disclosed.
1. A squeeze film bearing cartridge for a turbocharger comprising:
a center section;
two outer sections having a first outer diameter;
two intermediate sections having a second outer diameter, the intermediate sections positioned intermediate the center section and a respective one of the outer sections and wherein the first outer diameter exceeds the second outer diameter; and
a first well intermediate the center section and one of the intermediate sections and a second well intermediate the center section and the other of the intermediate sections wherein the wells include one or more openings to allow lubricant to enter the bearing cartridge.
2. A squeeze film bearing cartridge for a turbocharger comprising:
a center section;
two outer sections having a first outer diameter;
two intermediate sections having a second outer diameter, the intermediate sections positioned intermediate the center section and a respective one of the outer sections and wherein the first outer diameter exceeds the second outer diameter;
a first well intermediate the center section and one of the intermediate sections and a second well intermediate the center section and the other of the intermediate sections; and
a first grind relief intermediate one of the intermediate sections and one of the outer sections and a second grind relief intermediate the other of the intermediate sections and the other of the outer sections.
3. The bearing cartridge of claim 2 wherein the first grind relief and the second grind relief comprise curvilinear cross-sections.
4. The bearing cartridge of claim 2 wherein the first grind relief and the second grind relief comprise polygonal cross-sections.
5. A squeeze film bearing cartridge for a turbocharger comprising:
a center section;
two outer sections having a first outer diameter;
two intermediate sections having a second outer diameter, the intermediate sections positioned intermediate the center section and a respective one of the outer sections and wherein the first outer diameter exceeds the second outer diameter;
a well positioned between the center section and one of the intermediate sections and another well positioned between the center section and the other of the intermediate sections; and
a first step intermediate one of the intermediate sections and one of the outer sections and a second step intermediate the other of the intermediate sections and the other of the outer sections.
6. A squeeze film bearing cartridge for a turbocharger comprising:
a center section;
two outer sections having a first outer diameter;
two intermediate sections having a second outer diameter, the intermediate sections positioned intermediate the center section and a respective one of the outer sections and wherein the first outer diameter exceeds the second outer diameter;
a well positioned between the center section and one of the intermediate sections and another well positioned between the center section and the other of the intermediate sections; and
an opening to axially locate the cartridge in a housing wherein the opening comprises a lubricant exit.
7. The bearing cartridge of claim 6 wherein the wells include one or more openings to allow lubricant to enter the bearing cartridge.