# US 10,767,553 B2 · Turbocharger with a turbine housing to which is attached an actuator housing of a waste gate valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,553 B2 - Document ID: US10767553B2 - Status: Granted - Kind: B2 - Application number: 15/309,206 - Filed: 2015-02-19 - Published: 2017-03-23 - Granted: 2020-09-08 - Earliest claimed: 2014-05-09 - Assignees: Pierburg GmbH - Applicants: Pierburg GmbH - Inventors: Martin Nowak; Michael-Thomas Benra; Axel Hemsing; Andreas Koester - Web page: https://patentgrep.com/patent/US10767553B2 ## CPC - F02B 37/186: {Arrangements of actuators or linkage for bypass valves} - F01D 5/04: for radial-flow machines or engines - F01D 17/105: {by passing part of the fluid} - F01D 25/24: Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) - F02B 33/40: of non-positive-displacement type - F02B 39/005: {Cooling of pump drives} - F05D 2220/40: in turbochargers - Y02T 10/12: Improving ICE efficiencies - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A turbocharger includes a waste gate valve, a compressor, a turbine, a turbine housing which houses the turbine, a bypass channel which includes an opening cross-section, the bypass channel bypassing the turbine, a bypass channel portion formed in the turbine housing, an actuator housing which includes a separate first coolant channel having a coolant inlet port and a coolant outlet port, an electric motor arranged in the actuator housing, a transmission which includes an output shaft, the transmission being arranged in the actuator housing, and a control body coupled to the output shaft. The actuator housing is formed separately and is secured to the turbine housing. The control body controls the opening cross-section of the bypass channel. ## Claims ### Claim 1 A turbocharger comprising: a waste gate valve; a compressor; a turbine; a turbine housing configured to house the turbine; a bypass channel comprising an opening cross-section, the bypass channel being configured to bypass the turbine; a bypass channel portion formed in the turbine housing; an actuator housing comprising a separate first coolant channel which comprises a coolant inlet port and a coolant outlet port, the actuator housing being formed separately and being secured to the turbine housing; an electric motor arranged in the actuator housing; a transmission comprising an output shaft, the transmission being arranged in the actuator housing; and a control body coupled to the output shaft, the control body being configured to control the opening cross-section of the bypass channel, wherein, the first coolant channel is configured to radially surround the electric motor when viewed along a longitudinal axis of the electric motor. ### Claim 2 (depends on 1) The turbocharger as recited in claim 1, further comprising: screws; and screw domes arranged at the actuator housing, the screw domes being configured so that the actuator housing can be fastened to the turbine housing via the screws. ### Claim 3 (depends on 1) The turbocharger as recited in claim 1, wherein the actuator housing further comprises a two-part design. ### Claim 4 (depends on 3) The turbocharger as recited in claim 3, wherein, the two-part design of the actuator housing comprises a drive housing and a bearing housing which are connected with each other, the electric motor is arranged in the drive housing, and the output shaft is supported in the bearing housing. ### Claim 5 (depends on 4) The turbocharger as recited in claim 4, further comprising: an electronics unit; and a space delimited by the drive housing and the bearing housing, wherein, the transmission and the electronics unit are arranged in the space. ### Claim 6 (depends on 5) The turbocharger as recited in claim 5, wherein the electronics unit comprises a connector and a position sensor. ### Claim 7 (depends on 4) The turbocharger as recited in claim 4, further comprising: at least one partition wall arranged between the coolant inlet port and the coolant outlet port, wherein, the first coolant channel is interrupted in a circumferential direction of the electric motor by the at least one partition wall. ### Claim 8 (depends on 7) The turbocharger as recited in claim 7, wherein, the at least one partition wall comprises two partition walls which extend radially and which, when viewed along the longitudinal axis of the electric motor, are arranged on either side of the coolant inlet port, and the two partition walls are configured to interrupt the first coolant channel in the circumferential direction. ### Claim 9 (depends on 8) The turbocharger as recited in claim 8, wherein, the coolant inlet port, the coolant outlet port, the first coolant channel, a first coolant inlet channel, and a first coolant outlet channel are each formed at the drive housing, a second coolant inlet channel, a second coolant channel, and a second coolant outlet channel are each formed at the bearing housing, the first coolant outlet channel of the drive housing opens into the second coolant inlet channel of the bearing housing, and the second coolant outlet channel of the bearing housing opens into the first coolant inlet channel of the drive housing. ### Claim 10 (depends on 9) The turbocharger as recited in claim 9, further comprising a bearing configured to support the output shaft, the bearing being completely radially surrounded by the second coolant outlet channel when viewed along a longitudinal axis of the bearing. ### Claim 11 (depends on 9) The turbocharger as recited in claim 9, further comprising: walls configured to delimit the first coolant outlet channel of the drive housing, wherein, the two partition walls which are configured to interrupt the first coolant channel in the circumferential direction extend over an entire height of the first coolant channel, and the two partition walls are formed as an extension of the walls. ### Claim 12 (depends on 1) The turbocharger as recited in claim 1, wherein the control body is mounted on the output shaft. ### Claim 13 (depends on 1) The turbocharger as recited in claim 1, further comprising: a flap shaft having a common axis of rotation with the output shaft, wherein, the control body is coupled with the flap shaft. ### Claim 14 (depends on 13) The turbocharger as recited in claim 13, wherein the flap shaft is coupled with the output shaft via an Oldham coupling.