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  #1  
Old 05-28-2016, 06:54 PM
michaeljayclark michaeljayclark is offline
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Default Nikola Motors Electric Semi Truck

Is this even possible with a 400 KW Gas Turbine for an onboard generator?

https://nikolamotor.com/one
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  #2  
Old 05-29-2016, 01:52 PM
Hollie Maea Hollie Maea is offline
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Default Re: Nikola Motors Electric Semi Truck

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Originally Posted by michaeljayclark View Post
Is this even possible with a 400 KW Gas Turbine for an onboard generator?

https://nikolamotor.com/one
Yes it is.
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  #3  
Old 05-29-2016, 01:57 PM
michaeljayclark michaeljayclark is offline
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Default

What would the electricity requirement to propel a 80,000 pound vehicle up a 5% grade for 5 miles?

I've heard gas turbines become less efficient the larger they get

I just have serious doubts 400 KW would be enough to do the job of driving the vehicle up a mountain while weighing 80,000 pounds
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Old 05-29-2016, 02:40 PM
Hollie Maea Hollie Maea is offline
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Default Re: Nikola Motors Electric Semi Truck

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Originally Posted by michaeljayclark View Post
What would the electricity requirement to propel a 80,000 pound vehicle up a 5% grade for 5 miles?

I've heard gas turbines become less efficient the larger they get

I just have serious doubts 400 KW would be enough to do the job of driving the vehicle up a mountain while weighing 80,000 pounds
I can't give you any of the numbers. But I can assure you that this vehicle was sized for the job.

Keep in mind that hills don't last forever. So the truck can draw significantly more than 400kW when going up a hill, due to the 315kWh battery. The whole point of a series hybrid is that the range extender must cover only the average load. 400kW is enough for that.
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Old 05-29-2016, 04:50 PM
ishiwgao ishiwgao is offline
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Default Re: Nikola Motors Electric Semi Truck

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Originally Posted by Hollie Maea View Post
I can't give you any of the numbers. But I can assure you that this vehicle was sized for the job.
ooo this sounds like you were involved in the project! cant wait to hear more in the future when you can release details
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Old 05-29-2016, 05:17 PM
Duncan Duncan is offline
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Default Re: Nikola Motors Electric Semi Truck

Gas turbines become MORE efficient as they get larger
and 400Kw is 533Hp -
Some (only a few) of today's truck engines exceed 600hp - BUT they only achieve that power at maximum rpm
Using an electric drive this truck would have 400Kw available all of time + being able to pull from the battery
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Old 05-29-2016, 08:11 PM
Hollie Maea Hollie Maea is offline
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Default Re: Nikola Motors Electric Semi Truck

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Originally Posted by Duncan View Post
Gas turbines become MORE efficient as they get larger
and 400Kw is 533Hp -
Some (only a few) of today's truck engines exceed 600hp - BUT they only achieve that power at maximum rpm
Using an electric drive this truck would have 400Kw available all of time + being able to pull from the battery
Exactly. The peak power of the truck is actually 1.5 Megawatts. With the turbine running, the battery can supply the other 1.1Megawatts. Of course as you drive this way, the battery SOC starts to drop. But there isn't a hill in the country long enough to deplete the batteries. And then of course you regen down the other side. With 80,000 lbs, regen starts to be a lot more significant.
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Old 05-29-2016, 08:31 PM
Duncan Duncan is offline
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Default Re: Nikola Motors Electric Semi Truck

Hi Hollie

Is 1.5 Mw not just a wee bit of overkill?
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Old 05-29-2016, 08:36 PM
Hollie Maea Hollie Maea is offline
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Default Re: Nikola Motors Electric Semi Truck

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Hi Hollie

Is 1.5 Mw not just a wee bit of overkill?
They wanted to be able to go 65mph up a 6% grade with a 80,000 lb load.

Who am I to judge?
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Old 04-02-2017, 01:08 AM
Caballus Caballus is offline
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Default Re: Nikola Motors Electric Semi Truck

I don't think the trucking industry is aware of the big changes that are coming soon. Drivetrain technology for heavy trucks have been mostly stagnant for decades (more so than cars). I guess it is a consequence of an industry with only a few competitors (Cummings, CAT, International, Detroit, etc.) and very conservative customers. Brand loyalty is fierce in trucking, almost religious.

In the end, fleets demand efficiency. The manufacturer that brings a platform to market that delivers better performance with significant efficiency gains than current trucks will have a winner. We know it works, but convincing this industry is the hard part.
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