Deep Dive: Chrysler Pacifica Hybrid Transaxle (w/ Video)


Chrysler Pacifica Hybrid

The new-for 2017 Chrysler Pacifica hybrid represents the first mainstream attempt to bring hybrid technology to the North American minivan market. Part of what makes the trend-setting minivan so unique is its innovative Si-EVT Hybrid yransmission.

All those letters in the Chrysler Pacifica Hybrid tranny nomenclature stand for Single-input (Si) Electronically Variable Transaxle (EVT), which tells you a few things right off the bat. Namely, that there’s a single power input and that it features some sort of CVT that uses electronics, rather than inertia/rpm alone, to select its gear ratios. Which, I mean, those are fine things to know if you want a basic overview of the van Kyle considered calling “perfect” when he wrote about it earlier this month- but if you’re a tech nerd (and I’m a tech nerd), you might find yourself wanting more.

That’s what this hour-plus long deep dive from Weber State University’s automotive technology department comes in. You can get into the hows and why’s of the new Chrysler Pacifica Hybrid transmission is all about, and how it contributes to the van’s awesome 84 MPGe fuel economy rating, below. Enjoy!


2017 Chrysler Pacifica Si-EVT Hybrid Transaxle

    The 2017 Chrysler Pacifica Si-EVT Hybrid Transaxle – A Video Deep Dive into the components, service and operation of the Chrysler Single Input Electronic Variable Transaxle (Si-EVT) transaxle. Weber State University (WSU) – Department of Automotive Technology – Transmission Lab.


Source | Images: Weber Auto.

About the Author

I’ve been in the auto industry 1997, and write for a number of blogs in the IM network. You can also find me on Twitter, at my Volvo fansite, or chasing my kids around Oak Park, IL.

  • Ed

    Wow! Marvelous complexity. I am pleased Chrysler is offering this vehicle…but it is yet another reminder of how complex our ICE vehicles have become in trying to meet future needs..

    • Keep in mind, though- we’re increasing complexity and improving reliability at the same time. If you bought a new car in 1987, it would have to be pretty well maintained to reach 150,000 miles. In 2017, thirty years later, the car probably makes 200% more power, gets 50% better fuel economy, puts out maybe 20% of the harmful emissions, and even a basic Kia will get you to 150,000 miles in air conditioned, Pandora-listening comfort without much effort.

      • Ed

        Indeed. Today’s cars are truly outstanding in value and reliability. The downside is that even the cleanest ICE will pollute more in its first mile of travel than an EV in 100,000 miles.

        • I don’t think that’s true. You’re better off keeping an existing car running another 100,000 miles, I think, than going through the trouble of building an all new car from scratch- even an EV. If you’re buying new- if you MUST buy new, that is- then, yeah. An EV is probably way better.

          • Ed

            Hard to argue against that logic.
            As recently as last year, I don’t think any of us could foresee that the success of Nissan and Tesla in showing that an EV could meet well over 95% of personal vehicle needs would influence so many city, state and national governments to write regulations against fuel-burning vehicles. That puts a whole new view to “what comes next.”