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-   -   Hyllion ERX - A Natural Gas Hybrid Electric Semi (https://ecomodder.com/forum/showthread.php/hyllion-erx-natural-gas-hybrid-electric-semi-38459.html)

JSH 06-30-2020 02:59 PM

Hyllion ERX - A Natural Gas Hybrid Electric Semi
 
This is Hyliion's new hybrid system. It is an electric truck with a natural gas powered generator to charge the battery. It can run EV only for 25 miles to enter EV only areas in cities and cruise 1,300 mile on a tank.

This is a great idea for a realistic way to transition long-haul trucking to alternative fuels. Natural gas stations already exist and NG trucks have very low emissions. It is likely actually simpler than a modern diesel truck with all the emission controls and little fuel economy tweeks.

https://www.hyliion.com/erx-page/#/performance

https://i.ytimg.com/vi/Sn4hI7CjcEY/maxresdefault.jpg

MeteorGray 07-04-2020 08:14 AM

Amazing it can hold enough CNG to run 1300 miles working a load. Or can it?

Piotrsko 07-04-2020 10:21 AM

Using 6mpg, you need 216 gallons of diesel so perhaps 1000 gallon high pressure gas. The tanks shown look almost big enough for1/2 that, one on each side.

The CNG transit vans I drove had a 50 gallon tank where the gasoline tank was but I could only get maybe 60 miles out of it before refill. Some days I refilled 3 times.

cRiPpLe_rOoStEr 07-05-2020 10:17 PM

Quote:

Originally Posted by Piotrsko (Post 627370)
The CNG transit vans I drove had a 50 gallon tank where the gasoline tank was but I could only get maybe 60 miles out of it before refill. Some days I refilled 3 times.

Do you remember how many GGEs it could hold?

JSH 07-06-2020 06:43 AM

Quote:

Originally Posted by MeteorGray (Post 627362)
Amazing it can hold enough CNG to run 1300 miles working a load. Or can it?

It has a side tank on each side and a giant cabinet tank behind the cab.

Also as a hybrid it should be more efficient than CNG converted diesel.

EDIT: I believe the 1300 mile range is for liquid natural gas which is about 4x denser than compressed natural gas.

Piotrsko 07-06-2020 09:34 AM

Quote:

Originally Posted by cRiPpLe_rOoStEr (Post 627435)
Do you remember how many GGEs it could hold?

The outfit I worked for was hugely non technical, so, unfortunately no. They had issues scheduling how far I could run before refueling even after I gave them a tank range.

Liquid gas is comparable to gasoline for BTU content, so if that's the case 1300 miles is much easier.

redpoint5 07-06-2020 11:31 AM

I wonder what happened to that one guy who was on a mission to improve MPGs on a huge fleet? He kept going on and on about HHO, insisting that testing proved a benefit.

JSH 07-07-2020 12:27 PM

Some more detail now that I have access to a computer:

Agility LNG side tanks are up to 160 DGE each
Agility CNG side tanks are up to 60 DGE each
Agility CNG Cabinet tanks are up to 175 DGE

redpoint5 07-07-2020 05:38 PM

What is a DGE? Distance per Gallon Equivalent?

samwichse 07-07-2020 08:44 PM

Quote:

Originally Posted by redpoint5 (Post 627548)
What is a DGE? Distance per Gallon Equivalent?

Diesel gallon equivalent


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