# US 2006/0130601 A1 · Hybrid powertrain system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2006/0130601 A1 - Document ID: US20060130601A1 - Status: Published application - Kind: A1 - Application number: 10/747,993 - Filed: 2003-12-30 - Published: 2006-06-22 - Earliest claimed: 2003-12-30 - Assignees: Eaton Corporation - Inventors: Douglas Hughes - Web page: https://patentgrep.com/patent/US20060130601A1 ## CPC - B60K 6/36: characterised by the transmission gearings - B60K 6/387: Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means - B60K 6/40: characterised by the assembly or relative disposition of components - B60K 6/48: Parallel type - F16H 3/006: {power being selectively transmitted by parallel flow paths, e.g. dual clutch transmissions} - B60K 2006/4825: {Electric machine connected or connectable to gearbox input shaft} - B60Y 2400/428: Double clutch arrangements; Dual clutches - F16H 61/688: with two inputs, e.g. selection of one of two torque-flow paths by clutches - F16H 2200/0047: the gear ratios comprising five forward speeds - Y02T 10/62: Hybrid vehicles - Y10T 74/111: Speed controlled - Y10T 74/19223: Disconnectable counter shaft - Y10T 74/19228: Multiple concentric clutch shafts - Y10T 74/19288: Double clutch and interposed transmission - 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 - F16H: GEARING - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A powertrain system is provided that includes a first prime mover and change-gear transmission having a first input shaft and a second input shaft. A twin clutch is disposed between the first prime mover and the transmission. The twin clutch includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned between the first prime mover and the second input shaft. The powertrain system also includes a second prime mover operably connected to one of the first and second input shafts. ## Claims ### Claim 1 A powertrain system, comprising: a change-gear transmission having a first input shaft and a second input shaft; a first prime mover; a twin clutch that includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned between the first prime mover and the second input shaft; a second input shaft clutch positioned between the first input shaft and the second input shaft to selectively fix rotation of the first and second input shafts; and a second prime mover operably connected to one of the firs and second input shafts. ### Claim 2 (depends on 1) The powertrain system of claim 1, wherein the transmission includes a rotational output member. ### Claim 3 (depends on 2) The powertrain system of claim 2, further including a first input shaft clutch positioned between the first input shaft and the rotational output member to selectively fix rotation of the first input shaft with the rotational output member. ### Claim 4 (canceled) ### Claim 5 (depends on 1) The powertrain system of claim 1, wherein the first prime mover is an internal combustion engine and the second prime mover is one of an electric motor and a hydraulic motor. ### Claim 6 (depends on 1) The powertrain system of claim 1, wherein the first input shaft includes at least one first input gear and the second input shaft includes at least one second input gear. ### Claim 7 (depends on 6) The powertrain system of claim 6, wherein the first and second input gears are secured to the first and second input shafts, respectively, for rotation therewith. ### Claim 8 (depends on 6) The powertrain system of claim 6, wherein the transmission includes a countershaft having at least two countershaft gears, and wherein each of the first and second input gears are meshed with a corresponding countershaft gear. ### Claim 9 (depends on 8) The powertrain system of claim 8, wherein the countershaft gears are rotatably supported on the countershaft. ### Claim 10 A powertrain system, comprising: a change-gear transmission having a first input shaft, a second input shaft and a rotational output member, the change-gear transmission also including a first input shaft clutch positioned between the first input shaft and the rotational output member to selectively fix rotation of the first input shaft with the rotational output member and a second input shaft clutch positioned between the first input shaft and the second input so to selectively fix rotation of the first and second input shafts; a first prime mover operably connected to one of the first and second input shafts; a twin clutch th includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned been the first prime mover and the second input shaft; and a second prime mover operably connected to the other of the first and second input shafts. ### Claim at position 11 11-19. (canceled) ### Claim 20 A transmission and clutch arrangement for a dual prime mover powertrain system, comprising; a change-gear transmission having a first input shaft, a second input shaft and a rotational output member, the change-gear transmission also including a first input shaft clutch positioned between the first input shaft and the rotational output member to selectively fix rotation of the first input it with the rotational output member and a second input shaft clutch positioned between the fist input shaft and the second input shaft to selectively fix rotation of the first and second input shafts; a twin clutch that includes a first main clutch configured to selectively transfer power between a first prime mover and the first input shaft and a second main clutch configured to selectively transfer power between the first prime mover and the second input shaft; and wherein at least one of the first and second input shaft is configured for connection to a second prime mover.