Human/Prius Centipede

You'd be better off using the wire to take the signal from the go pedal to the inputs of both cars' power management control ECUs, and let each ECU control the throttle of its own car. I suspect you could get away with the pedal going to two ECUs' inputs without having to worry about input impedance getting too low.

Even so, there would need to be a whole lot more to the story. Are you sure you don't just want the Prius in back to have adaptive cruise?

 

This is catastrophe waiting to happen.... physically and financially.... I can't even begin to think of the liability involved with this going south and killing someone. Wonder what law enforcement is going to say when they see this rig......

 

duplicate

 

Assuming the load weights are carefully matched so they will accelerate and decelerate similarly ...

Remember that a fairly large portion of highway losses are from air drag. The rear vehicle will be doing extreme drafting, so will have very significantly reduced air drag. That means when these vehicles are controlled to put out the same propulsion power, the rear car will be continually pushing the front car.

 

Set the front car for PWR and the back one for ECO?

 

Waaay gnarly dude!!! Don’t let people here stop ya. Liability and law enforcement are just dream killers.

 

In many ways, I absolutely love this. Steering might be a bit of an issue.

I want to see the rear hatch of the first car removed and the front windshield of the second car removed.

And then fabricate an air-tight connection between the two cars, so that it is really one car. So the interior would be from the front dash in the first car to the rear hatch of the second car.

Prius camping would be awesome! It would be like a two-bedroom RV.

Parking might be a bit of an issue. There's also cooling for the second car's ICE.

But all of these are minor problems, easily overcome, I'm sure.

 

The Onion was there first.

 

well.. since you aren't trying to marry the two HV systems just the "throttle"... but wait, are they welded together? need more details. connected from to frame and the rear Prius doesn't steer? But will the rear Prius steer as well? I mean CANBUS is there, I think that's your easiest Um, way. A CANBUS controller. I never thought about it that way, my usage is using CANBUS and the throttle position to control an added rear electric motor on the rear axle of my Gen 3. To control a 2nd CANBUS vehicle with the CANBUS of the 1st vehicle, I'd have to think through that one.

 

you know, I think outside of the box often but I have yet to reach the space nebula region you are in. Bravo!

 

As suggested in post #2, the go pedal is wired to the power management control ECU. You can probably go to the rear car, unplug its go pedal, and parallel wire the front car's go pedal to both ECUs. I am guessing that the pedal's output impedance is low enough to serve two ECU inputs without getting loaded down. You'd probably want to use some heavier wire to bond the two cars' grounds together (unless your welded metal frame will accomplish that anyway). And you might want to treat the VCP1 and VCP2 lines with some extra care: each ECU will be trying to source a regulated 5 volts onto those lines, but the two ECUs could have slightly different opinions of what's exactly 5 volts.

At the same time, post #2 was pretty much tongue-in-cheek. There is a whole lot left out of a plan like that. With the cars rigidly joined together, who knows, maybe you'd get something to work.

 

Because NO two cars are exactly the same, not even when new, not even if they were next to each other in the assembly line. Throw in some years of use, wear and tear, and who knows? Same reason why 2010 Prius "car A" gets 50 mpg and "car B" gets 48, even if driven exactly the same. You seem hell bent on doing it, so I hope it works out for you. I just hope you don't kill yourself or some other poor sonofagun driving down the road minding their business.

p.s....if you're going to fake out the throttle, the brakes may be worth thinking about also. I wonder if seat occupant detection has any interaction?

I would be surprised if you actually made it to your destination without being stopped by law enforcement. They're responsible for road safety and what you're contemplating is by no means safe. Even if you decide to just tow it, you're putting yourself and others in danger. There's a reason companies like U-Haul require minimum weight differences between the hauler and haulee.

 

Help me out with this one, I may be misunderstanding. The OEM HV battery is rated at 6.5ah. You're building a 1500ah battery?

KWh = Ah x V / 1000

=1500x202/1000
=300+KWH

That's a big battery. Aren't tesla batteries around 85-90?
How will it be installed in the car?

 

A quick tailgating ticket and he's on his way.

 

Is it tailgating if they're attached?

 

PLAID is 100 all else is smaller in the 55-75 range