All of the conditions above are driver inputs. Not dynamic conditions. Push accelerator, push nothing, push brake. This mirrors how exhaust braking works. Push accelerator and exhaust brake disengages even if the RV is not yet accelerating. No input to accelerator or brake pedal and exhaust...
The key capability to be able to flat tow an EV is being able to decouple the motors. This was earlier in the thread. Being able to actively couple and decouple the motors also allows for higher efficiencies . Decoupled wheels are allowed to spin freely without the spin loss of the motors...
I honestly have no clue what you arenāt understanding about how regen and flat tow would work. It is incredibly simple because the problem has already been solved for when and how to break. That combined with decoupling you can cover all flat towing scenarios sufficiently.
Accelerate, coast...
It sounds like you havenāt driven a car with regen braking before ā I apologize if that is a wrong assumption. Regen braking is dynamic. When the car is coasting or the breaks are applied the regen breaking automatically kicks in. In many vehicles you can adjust the strength of the regen...
You canāt do that. You canāt regen brake a full battery. You wonāt want to set it to regen only because you will want the brake force consistent and more predictable like pressing the break pedal. The only real change to put in for flat towing an EV would be whether to regen while coasting -...
Way overthinking this. Flat tow breaking is not that complicated. Often flat tow system are set up to simply put braking force to a flat x% based on the receiving a breaking signal through the connection. Others are relative to the breaking force applied to the RV.
The math for breaking...
This is why I wrote the person does not understand flat towing that wrote it would be a burden. Rengen braking would replace regular breaking while the Rivian is towed (if they do it right.
When you flat tow a vehicle and apply the RV break it turns on the Car brakes as well to assist in slowing both vehicles.
This is effectively āfreeā energy which would otherwise be burnt off as heat in the brakes.
Man, this would be great news. Haha you can tell whoever said that doesnāt understand that you use the flat tow vehicle to help you slow down. If done right it shouldnāt be a āburdenā.
This is an old service model that will be replaced. People expect you to come to them or to come get their car. This will become the new white glove service.
Come to me and fix the car on site
Come to me and swap the car for a loaner
My most valuable thing is my time
Why do you keep saying āat nightā. Lidar is an active system and more effective at night and significantly better than neural net imaging at night because it does not require external light. Yes it is negatively effected by certain weather conditions, but that makes the combination of imaging +...
I initially bought into this explanation as as well. The reality is that full self drive should have multiple overlapping redundancies, and lidar is one of them. Also lidar is an active system where imaging cameras are a passive system that is dependent on the surrounding lighting conditions...
Iāll have to find the article, but there was a great article about the mindset that Rivian could take being partnered with Amazon. The skateboard platform is an unprecedented opportunity for car manufacturing to become much more like the production of other pieces of technology like phones...
Yes, it could result in a lower end work truck EV (Ford version) and a high-end Rivian based vehicle. As the pricing improves for the skateboard it will move down to the lower cost/higher volume models.
Thanks for posting this. This is more proof IMO that they have learned many of the lesson that others have not. The skateboard is what they are ultimately selling. The high end SUV and Pickup market is the proof of concept that they will make a name for themselves. The math on fleet vehicles...
Its not a whole other car. They are going to use the same skateboard for multiple vehicles (again a lesson learned from Tesla that Tesla leaned the hard way). The difference for Rivian is that their skateboard is already the size to create these type of vehicles where the Model 3 chassis is...