From WeberAuto.
Join me as I redo a demonstration of the Toyota Hybrid System (THS) transmission operation I produced fifteen years ago. Explore the components involved and their functions.
TIMELINE:
0:00 Introduction
0:18 The internal combustion engine (ICE) crankshaft
0:37 Flywheel and torque-damping/limiting clutch
1:12 The planet carrier, gears, and shaft
1:42 The sun gear and motor/generator one
2:55 The ring gear and motor/generator two
3:25 The completed assembly of parts
3:40 The functions of motor/generator two (MG2)
3:50 The functions of motor/generator one (MG1)
4:01 MG1 starting the ICE
4:28 MG1 as a generator for the high-voltage (HV) battery
4:44 The ICE and MG1 combine to provide variable gear ratios from the crankshaft to the wheels.
5:13 Direct drive 1:1 gear ratio
5:42 Underdrive (greater than a 1:1 gear ratio) for acceleration
6:25 Overdrive (less than a 1:1 gear ratio) for higher vehicle speeds
7:52 Electronic Continuously Variable (eCVT)
8:15 Electric vehicle mode – Forward movement
8:48 Electric vehicle mode – Reverse movement
8:55 Series-Parallel transmission in Series Mode
9:38 Series-Parallel transmission in Parallel Mode
10:35 Regerative Braking
10:57 My 2010 YouTube video on this topic has a few errors, so I decided to reshoot it for its 15th anniversary.
ABOUT US
Weber State University (WSU) Davis Campus – Automotive Technology Department – Hybrid and Electric Vehicles Lab.
We teach current vehicle technologies to our automotive students at Weber State University and online. For more information, visit: https://www.weber.edu/automotive
This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see https://www.weber.edu/automotive/J_Kelly.html
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 https://www.weber.edu/evtraining
DONATE TO OUR DEPARTMENT
Please consider a donation in my name to the Department of Automotive Technology at Weber State University here: https://advancement.weber.edu/Automotive
