Understanding the Acura Sport Hybrid

See the impressive Hybrid 7-Speed Dual-Clutch Transmission (DCT) used in the Acura MDX Sport Hybrid and the Acura RLX Sport Hybrid. Watch how this complex transaxle functions mechanically and with the assistance of an electric motor. Clarifications. E-Drive is a marketing term used on the Acura.com sales website to describe this system. Intelligent Dual Clutch Drive (i-DCD) is an engineering term to describe this system. TIMELINE: 0:00 Start 0:12 Introduction 1:52 Performance differential and counter gear 3:48 Secondary shaft for even-numbered gears 4:10 Main shaft for odd-numbered gears 4:43 Dual-clutch components and operation 6:50 The clutch pack for the odd-numbered gears 7:25 The clutch pack for the even-numbered gears 8:20 Power flow from the engine to the main shaft for odd-numbered gears 8:40 Power flow from the engine to the secondary shaft for even-numbered gears 9:54 Recommended automatic transmission fluid - Honda ATF DW-1 10:30 MUST SEE: Dual hydraulic apply pistons for dual-clutch packs 13:17 How power is transferred in the even-numbered gears 18:02 How power is transferred in the odd-numbered gears 21:20 MUST SEE: electric motor assist 22:31 Planetary gear set for first gear and power transfer from motor 24:10 First gear operation and calculations 25:50 Second gear operation and calculations 27:56 Third gear operation and calculations 29:34 Fourth gear operation and calculations 30:30 Fifth gear operation and calculations 31:30 Sixth gear operation and calculations 32:30 Seventh gear operation and calculations 33:20 How the electric motor contributed power in all gears 34:24 The reverse gears and the gear ratio mystery 3.66:1?** 35:37 Summary and Three modes of operation 36:27 The motor stator and case 36:49 Wrap-up **The reverse mystery has been solved! A big thank you to Michel Kraus. Solution: "Even Gears" clutch engaged to the reverse idler to the reverse gears to the planetary gear set to the 5th gear. (54/34) * (51/54) * (35/63) * (1+(111/39)) * (48/42) = 3.663003663:1 ABOUT US Weber State University (WSU) Davis Campus - Automotive Technology Department - Advanced Vehicles Lab. A technical description and demonstration of the Acura Integrated Motor Dual Clutch Transmission (DCT) used in the 2018 - 2020 Acura MDX Sport Hybrid and the 2014 - 2020 Acura RLX Sport Hybrid. We teach current vehicle technologies to our automotive students at Weber State University and online. For more information, visit: http://www.weber.edu/automotive This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see http://www.weber.edu/automotive/J_Kel... ADDITIONAL TRAINING FOR YOU Join us for hybrid and electric vehicle training with two online courses and a 5-day on-campus boot camp with Professor John D. Kelly. See http://www.weber.edu/evtraining DONATE TO OUR DEPARTMENT Please consider a donation to the Department of Automotive Technology at Weber State University here: http://advancement.weber.edu/Automotive