# US 10,119,418 B2 · Split turbocharger bearing assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,418 B2 - Document ID: US10119418B2 - Status: Granted - Kind: B2 - Application number: 15/824,839 - Filed: 2017-11-28 - Published: 2018-03-22 - Granted: 2018-11-06 - Earliest claimed: 2014-11-17 - Assignees: Ford Global Technologies, LLC - Applicants: Ford Global Technologies, LLC - Inventors: Sam Penzato - Web page: https://patentgrep.com/patent/US10119418B2 ## CPC - F01D 25/162: {Bearing supports} - F01D 21/003: {Arrangements for testing or measuring (for measuring vibrations G01H)} - F02C 6/12: Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure - F02C 7/06: Arrangements of bearings (bearings F16C); Lubricating ({of turbo machines F01D25/18; of machines or} engines in general F01M) - F04D 29/056: Bearings - F05D 2220/40: in turbochargers - F05D 2230/50: Building or constructing in particular ways - F05D 2240/54: Radial bearings - F05D 2240/60: Shafts - F16C 19/28: with two or more rows of rollers - F16C 19/54: Systems consisting of a plurality of bearings with rolling friction (spindle bearings F16C35/08) - F16C 35/067: Fixing them in a housing (with interposition of an element F16C35/07) - F16C 2360/24: Turbochargers - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS ## Abstract A turbocharger bearing assembly of a split turbocharger for an engine is disclosed in which key rotational parts are rotatably supported by a pair of spaced apart bearings located in a bore of a tubular bearing housing forming part of a bearing assembly. The rotational parts of the turbocharger bearing assembly are balanced as a unit before the turbocharger bearing assembly is assembled to a cylinder block of the engine by insertion into a bore formed in the cylinder block. ## Claims ### Claim 1 A method of assembling a split turbocharger on an engine comprising: assembling a drive shaft, a compressor rotor, a turbine rotor, and at least two bearings to a tubular body of a bearing housing to form a turbocharger bearing assembly, the tubular body of the bearing housing sized to fit a transverse cylindrical bore through an engine block of the engine, wherein the transverse cylindrical bore is located between a crankshaft of the engine and an engine cylinder and extends from a first side of the engine block to a second side of the engine block opposite the first side; rotating the drive shaft and the attached compressor and turbine rotors at a speed to balance rotating parts; and after balancing the rotating parts, inserting the balanced turbocharger bearing assembly into the transverse cylindrical bore through the engine and securing the balanced turbocharger bearing assembly to the engine. ### Claim 2 (depends on 1) The method of claim 1, further comprising: fastening a compressor housing to the first side of the engine block so as to cover the compressor rotor and form a compressor, the compressor rotor having an outer diameter equal to or smaller than an outer diameter of the tubular body of the bearing housing, and the tubular body of the bearing housing sized to fit through the transverse cylindrical bore through the engine. ### Claim 3 (depends on 2) The method of claim 2, further comprising: fastening a turbine housing to the second side of the engine block so as to cover the turbine rotor and form a turbine, the second side located opposite the first side. ### Claim 4 (depends on 1) The method of claim 1, wherein the assembling includes inserting the at least two bearings into a bore in the tubular body of the bearing housing and engaging the drive shaft with the at least two bearings so as to rotatably support the drive shaft. ### Claim 5 (depends on 4) The method of claim 4, wherein inserting the balanced turbocharger bearing assembly through the transverse cylindrical bore through the engine and securing the balanced turbocharger bearing assembly to the engine comprises engaging the tubular body of the bearing housing with the transverse cylindrical bore formed in the engine block, and fastening the tubular body in position in the transverse cylindrical bore, wherein a length of the balanced turbocharger bearing assembly along an axis of rotation of the drive shaft is greater than a length of the transverse cylindrical bore. ### Claim 6 (depends on 4) The method of claim 4, wherein the assembling further includes fastening one of the compressor rotor and the turbine rotor to one end of the drive shaft before it is engaged with the at least two bearings. ### Claim 7 (depends on 6) The method of claim 6, wherein the assembling further includes fastening an other of the compressor rotor and the turbine rotor to an opposite end of the drive shaft after the drive shaft has been engaged with the at least two bearings, the opposite end located opposite the one end having the one of the compressor rotor and the turbine rotor fastened thereto.