# US 11,305,631 B2 · Drive train unit for a hybrid vehicle, transmission unit and drive train > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,631 B2 - Document ID: US11305631B2 - Status: Granted - Kind: B2 - Application number: 15/733,922 - Filed: 2019-05-10 - Published: 2021-07-22 - Granted: 2022-04-19 - Earliest claimed: 2018-06-04 - Assignees: Schaeffler Technologies AG & Co. KG - Applicants: Schaeffler Technologies AG & Co. KG - Inventors: Ivo Agner - Web page: https://patentgrep.com/patent/US11305631B2 ## CPC - B60K 6/20: the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs - B60K 6/48: Parallel type - B60K 6/387: Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means - F16D 13/72: Features relating to cooling - F16D 21/08: Serially-arranged clutches interconnecting two shafts only when all the clutches are engaged (F16D13/08, F16D13/12 take precedence) - F16D 25/0638: with more than two discs, e.g. multiple lamellae - B60K 6/405: Housings - B60K 2006/4808: {Electric machine connected or connectable to gearbox output shaft} - B60K 2006/4833: {Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range} - B60Y 2200/92: Hybrid vehicles - F16D 2048/029: {Hydraulic circuits combining clutch actuation with clutch lubrication or cooling} - Y02T 10/62: Hybrid vehicles - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A drive train unit for a vehicle includes a housing, an input shaft rotatably mounted in the housing and arranged for rotationally fixed attachment to an output of a transmission, a first clutch operable between a rotor of an electric machine and the input shaft, and a coolant delivery device integrated in the housing. The coolant delivery device is arranged to generate a coolant circuit from the input shaft outwardly in a radial direction when the input shaft is rotated. The coolant delivery device has a discharge element for deflecting coolant flowing in a circumferential direction into a channel inwardly in the radial direction. The drive train unit may include the electric machine with the rotor. The drive train may have an output shaft and a second clutch operable between the input shaft and the output shaft. ## Claims ### Claim 1 A drive train unit for a vehicle, comprising: a housing comprising: a first housing region; a second housing region; and a housing wall separating the first housing region from the second housing region; an input shaft rotatably mounted in the housing and arranged for rotationally fixed attachment to an output of a transmission; a first clutch operable between a rotor of an electric machine and the input shaft; and a coolant delivery device integrated in the housing; an output shaft; and a second clutch operable between the input shaft and the output shaft, wherein: the coolant delivery device is arranged to generate a coolant circuit from the input shaft outwardly in a radial direction when the input shaft is rotated; the coolant delivery device comprises a discharge element for deflecting coolant flowing in a circumferential direction into a channel inwardly in the radial direction; the first clutch is arranged in the first housing region; and the second clutch is arranged in the second housing region. ### Claim 2 (depends on 1) The drive train unit of claim 1, further comprising the electric machine comprising the rotor. ### Claim 3 (depends on 1) The drive train unit of claim 1, wherein: the first clutch comprises a plurality of first friction plates; and the coolant circuit extends outwardly in the radial direction to the plurality of first friction plates. ### Claim 4 (depends on 1) The drive train unit of claim 1, wherein: the second clutch comprises a plurality of second friction plates; and the coolant circuit extends outwardly in the radial direction to the plurality of second friction plates. ### Claim 5 (depends on 1) The drive train unit of claim 1 further comprising a first actuating unit, wherein: the housing comprises: an outside; and a first bulk-head element projecting radially from the outside into the first housing region to divide the first housing region into: a first subspace accommodating the first clutch; and a second subspace accommodating the first actuating unit. ### Claim 6 (depends on 1) The drive train unit of claim 1 further comprising a second actuating unit, wherein: the housing comprises: an outside; and a second bulk-head element projecting radially from the outside into the second housing region to divide the second housing region into: a third subspace accommodating the second clutch; and a fourth subspace accommodating the second actuating unit. ### Claim 7 (depends on 1) The drive train unit of claim 1, wherein the discharge element is a first discharge element that generates the coolant circuit to supply the first clutch. ### Claim 8 (depends on 1) The drive train unit of claim 1, wherein the discharge element is a second discharge element that generates the coolant circuit to supply the first clutch. ### Claim 9 (depends on 1) The drive train unit of claim 1, wherein the coolant delivery device comprises a jet pump arranged to support the coolant circuit in an operating state. ### Claim 10 (depends on 1) The drive train unit of claim 1, wherein: the coolant delivery device comprises a jet pump arranged to support the coolant circuit in an operating state; and the jet pump is attached to the housing wall. ### Claim 11 (depends on 1) A transmission unit for a hybrid vehicle, comprising: the drive train unit of claim 1; and the transmission connected to the input shaft. ### Claim 12 (depends on 11) A drive train for a hybrid vehicle, comprising: the transmission unit of claim 11; and a differential gear coupled to the output shaft in a rotationally fixed manner.