EVBob
Posts: 108
Joined: Tue Apr 18, 2017 6:06 am

Workhorse W-15 Truck will use the i3 REx engine to get 310 miles...how?

Sat May 12, 2018 12:28 pm

It looks like Workhorse will indeed use the 3 cylinder i3 REx engine/generator for the pickup
s (w-15) range extender. : https://www.trucks.com/2018/03/12/workh ... ric-truck/

Workhorse mentioned they were testing other (bigger) gas engine generators - I am kinda surprised they decided to stick with the i3 REx engine...I found it just barely covers slightly slower than average highway driving in Eco-Pro - I wouldn't think it would have enough output for a much heavier/larger pickup truck (it has two larger traction motors vs the single in the i3) that will be hauling around more cargo....For it to get 310 miles with the 40kwh available battery that will get 80 miles by itself (they will use a 60kwh passive cooled battery - but only allow 40kwh to be utilized) , unless the REx was set to start running at 90% battery and its Rev speed wasn't tied to speed of the vehicle...

Though I will say I am very interested in the power export option (7.2kw initially, but 14.4kw may be offered later) http://workhorse.com/pickup/ -- this could be a very interesting option to have during Hurricane/Severe Storm seasons where power could be knocked out for days....

Magazine snippet from their prototype:
http://workhorse.com/storage/app/media/ ... ne2017.pdf

Brochure:
http://workhorse.com/storage/app/media/ ... e_2017.pdf


Your thoughts?

alohart
Posts: 1200
Joined: Sat Nov 01, 2014 7:36 pm
Location: Honolulu, HI

Re: Workhorse W-15 Truck will use the i3 REx engine to get 310 miles...how?

Sat May 12, 2018 7:21 pm

EVBob wrote:It looks like Workhorse will indeed use the 3 cylinder i3 REx engine/generator for the pickup
s (w-15) range extender. : https://www.trucks.com/2018/03/12/workh ... ric-truck/

Minor nit: the 3-cylinder description is incorrect; this engine has only 2 cylinders.

EVBob wrote:Workhorse mentioned they were testing other (bigger) gas engine generators - I am kinda surprised they decided to stick with the i3 REx engine...I found it just barely covers slightly slower than average highway driving in Eco-Pro - I wouldn't think it would have enough output for a much heavier/larger pickup truck (it has two larger traction motors vs the single in the i3) that will be hauling around more cargo....For it to get 310 miles with the 40kwh available battery that will get 80 miles by itself (they will use a 60kwh passive cooled battery - but only allow 40kwh to be utilized) , unless the REx was set to start running at 90% battery and its Rev speed wasn't tied to speed of the vehicle...

I think Workhorse envisions this truck being used at moderate city and suburban speeds rather than long distances at highway speeds. I'm sure that the REx engine will be able to be started manually in situations where its output is less than the power being consumed which would slow the discharge of the battery pack. Maybe it would turn on automatically when the power being consumed exceeds the REx engine's maximum output.

We'll have to wait until a production version of the truck can be tested to learn more.
Aloha,
Art

2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging, JuiceBox EVSE

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