What's the Gas + EV (Harvester) version going to sound like? Fake exhaust sound?

[JCintheSJs]

Given that it's basically an EV with a gas powered generator in it somewhere, what's it going to sound like driving on of these? I assume it's not going to sound like a typical generator running. Are they going to pipe in fake ICE exhaust noise? Something else?

 

[Noplacelikeloam]

I hope it only kicks in above 30mph or so. Otherwise we are all going to look like we are driving lawn mowers.

 

[timmyhil]

Its not a hybrid. So nothing will be kicking on at above 30mph. It will probably have a limit on what percentage of battery left that it turns on.

The generator is gonna have a 3 zone muffler and cat system, so you wont hear any noise(possibly very faintly). Its also a inline 3.

 

[Noplacelikeloam]

Its not a hybrid. So nothing will be kicking on at above 30mph. It will probably have a limit on what percentage of battery left that it turns on.

The generator is gonna have a 3 zone muffler and cat system, so you wont hear any noise(possibly very faintly). Its also a inline 3.

interesting, I didn’t catch that detail. Was it in the presentation somewhere?

 

[timmyhil]

interesting, I didn’t catch that detail. Was it in the presentation somewhere?

It’s not a Hybrid it’s a EREV(Extended Range Electric Vehicle). My guess is that when the battery start to reach around 35 the generator will kick on and start to spin some type of alternator that will “harvest” electricity. And put it back into the battery allow you to drive farther. But it won’t be any way able to run off of the Engine since it’s not connected to the drivetrain in any way other than making juice for the battery.

The Inline 3 is what’s the rumors around whats going into it, and from my experience in the automotive industry to keep the truck pretty much carbon neutral it would need to have a 3 muffler and catalytic compact system. Which is why in the presentation for the harvester you see 3 large-ish cylinders.

 

[timmyhil]

I’ll try to find out who’s making the muffler/cat combo Unit.

EDIT: From what I’m finding it seems Walker Exhausts would be a good guess since they are made in Virginia, and they make Muffler/Cat Combo Unit.

 

[timmyhil]

Would you like a gold medal or something? For just expanding and making a lengthier version of what i said.

 

[bilash31]

An EREV is a Series-Hybrid. EREV is a marketing name conjured up because most non-technical people don't understand there are two types of hybrid vehicles: Parallell Hybrid (i.e. Prius) and Series Hybrid (i.e. Volt* or BMW i3).

*the Volt was unique in that its transmission could switch to parallel hybrid operation under specific circumstances.

Hybrids are divided into two architectures: (a) Parallel Hybrid and (b) Series Hybrid.

Parallel Hybrid means the gas motor (it can be gasoline or diesel) runs in parallel with the electric drivetrain to power the electric motors and charge the battery and has a mechanical connection to the road wheels. There are several sub-variations of the Parallell hybrid system.

Series Hybrid means the gas engine operates to create electricity that powers the electric drive motors and charge the battery. The gas engine is not mechanically connected to the road wheels. It's called "series" because the engine-powered electric generator has to make electricity first before the car will move. Make electricity first means the generator either supplies the electric drive motors with power or charges the battery, or both.

It appears the Harvester architecture will also be a PHEV (Plug-in Hybrid Electric Vehicle), which means it can be plugged in to a charger to charge the battery in advance of the engine-generator supplying power to the electric drivetrain. Once the battery reaches a predetermined level of energy depletion the engine-generator starts and begins powering the electric drivetrain.

Thanks. I actually recommend you
consider make this a stand alone thread. I’ve been understanding it better the more I read through the info here and this will be my first hybrid. But I agree it gets confusing when someone says it’s not a hybrid then others explain it is. I am sure there are enough first timers like me (there always are on forums) that would benefit from understanding the basics.

 

[timmyhil]

You said an EREV is not a Hybrid. That is an incorrect statement. You are confusing people who may not understand the difference between a battery electric vehicle and a hybrid electric vehicle.

Understandable, lets move on now. It supposed to be a happy place here not one to bash others.

 

[Timmdodge60]

It’s not a Hybrid it’s a EREV(Extended Range Electric Vehicle). My guess is that when the battery start to reach around 35 the generator will kick on and start to spin some type of alternator that will “harvest” electricity. And put it back into the battery allow you to drive farther. But it won’t be any way able to run off of the Engine since it’s not connected to the drivetrain in any way other than making juice for the battery.

The Inline 3 is what’s the rumors around whats going into it, and from my experience in the automotive industry to keep the truck pretty much carbon neutral it would need to have a 3 muffler and catalytic compact system. Which is why in the presentation for the harvester you see 3 large-ish cylinders.

I take it you mean that the range extending ICE (Harvester) will automatically turn on when the remaining battery capacity gets down to 35%. That makes sense, but I think it might be a good idea to make that function adjustable or available to immediately set at any level on demand, based on the current driving conditions, what you are towing, and total weight of the cargo. It may be necessary to start regenerating the battery earlier than at 35% in order for the ICE to keep up with the power demand during that particular trip and load. I'm not sure if this is true so I'm interested in finding out more from someone that is knowledgeable about it.

 

[RMK!]

Given that it's basically an EV with a gas powered generator in it somewhere, what's it going to sound like driving on of these? I assume it's not going to sound like a typical generator running. Are they going to pipe in fake ICE exhaust noise? Something else?

Having owned 3 Chevy Volts, the generator charger kicked in when the battery was at or very close to empty. Unfortunately, it did make noise and it wasn't the pleasant exhaust note of some ICE cars but depending upon the load e.g. rapid acceleration, it sounded like crap. That is the main reason I changed from Harvester to BEV only. Other considerations were maintenance and the fact that after driving BEV's for 4 years, 350 miles of range is plenty for 95% of my use cases.

 

[RMK!]

I take it you mean that the range extending ICE (Harvester) will automatically turn on when the remaining battery capacity gets down to 35%. That makes sense, but I think it might be a good idea to make that function adjustable or available to immediately set at any level on demand, based on the current driving conditions, what you are towing, and total weight of the cargo. It may be necessary to start regenerating the battery earlier than at 35% in order for the ICE to keep up with the power demand during that particular trip and load. I'm not sure if this is true so I'm interested in finding out more from someone that is knowledgeable about it.

Interesting but I think we are getting into KISS principle territory here. I really like BEV's for their reliability and lack of maintenance of the drive system. If you tow big stuff, then the Harvester might just be the answer. Horses for courses.

 

[Timmdodge60]

Interesting but I think we are getting into KISS principle territory here. I really like BEV's for their reliability and lack of maintenance of the drive system. If you tow big stuff, then the Harvester might just be the answer. Horses for courses.

I definitely want the BEV without the Harvester. I reserved the Terra BEV. I'm ready to get rid of oil changes.