Chrysler Pacifica Hybrid Transaxle

Chrysler Pacifica Hybrid Transaxle

Check out the first-ever video showcasing the Si-EVT Hybrid Transaxle found in the Chrysler Pacific Hybrid plug-in minivan.

It's a highly complex unit, as expected, but luckily Weber Auto has once again released an amazingly detailed video explaining everything you've ever wanted to know about this unit in easy-to-understand form.

Video Description:

The 2017 Chrysler Pacifica Si-EVT Hybrid Transaxle - A Deep Dive into the components, service and operation of the Chrysler Single Input Electronic Variable Transaxle (Si-EVT) transaxle.

This video helps cover content related to the 2017 National Automotive Technicians Education Foundation (NATEF) Master Automobile Service Technology (MAST) Standard task 2.C.5 - Describe the operational characteristics of a hybrid vehicle drive train.

Weber State University (WSU) - Department of Automotive Technology - Transmission Lab.

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Video timeline:

Introduction at 0:12

Single Input (Si) components at 0:48 Two motors can propel vehicle at 2:44 One way Sprag clutch support at 4:20 One way Sprag clutch components at 5:05 Power Split Device (PSD) planet carrier at 11:20 Motor A and the PSD sun gear at 11:55 PSD ring gear at 12:23 Torque limiting clutch components at 13:05 Torque limiting clutch operation at 18:29 MUST SEE: How the engine is prevented from spinning backwards at 21:04 Electronic Variable Transaxle (EVT) portion of the transaxle at 22:26 Counter drive gear at 25:00 Final drive differential at 26:05 Mechanical oil pump drive gear at 26:35 Counter driven gear (transfer gear) at 27:45 Parking gear at 28:18 Motor B (Traction Motor) at 28:48 Parking pawl and linkage at 29:25 MUST SEE: How park is obtained at 30:00 PSD installation at 30:48 Motor A (Generator/Starter/Motor) at 32.36 Parallel Axis Power flow at 33:14 MUST SEE: EV Mode - How Motor A can help Motor B propel the vehicle at 38:08 MUST SEE: Hybrid Mode - Power Split operation at 40:00 Motor resolvers (position sensors) at 41:50 Motor A Stator at 43:54 Rear case half at 45:07 Fluid level check at 45:23 Fluid type at 46:02 Inside the rear case half at 48:39 Gear driven gerotor oil pump and filter at 49:10 3-phase auxiliary electric trochoid oil pump at 51:34 Fluid heat exchanger at 54:34 Stator A cooling at 57:25 Stator B cooling at 59:09 Resolver installations at 1:01:26 Internal harness installation at 1:03:43 High Voltage pass through connectors at 1:05:32 Oil pump removal at 1:06:53 Stator A installation at 1:07:32 Stator B installation at 1:08:32 Temperature sensor connections at 1:09:20 Counter driven gear bearing support fixture at 1:10:12 Power inverter module (PIM) (pre-production) information at 1:12:30 PIM installation at 1:14:43 Park pawl actuator installation at 1:17:48

Final summary at 1:18:45