Quote:
Originally Posted by rickjames8
One thing I could never quite picture was how the gas pedal would work?? Two cables which would somehow be switched?
Recently I found a website where a guy installed a turbo engine in the REAR of his Honda CRX.
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Any chance you have a link for that CRX project?
I've also thought about some sort of project to take a front wheel drive vehicle and add a drive system to the back end, but that sounds like a pretty major thing to do to a car. I don't have much major fabrication skills that something like that would take.
Part of what I would like to do is something that could be repeatable. I'd like to be able to show it off and have somebody else be able to think "yeah, I could do that!"
As for a throttle to control two different drive systems simultaneously.... That's one of the fun details to figure out, but I already have some ideas.
A) Thumb throttle for the electric. Drive the engine with your foot, but have a n electronic thumb-style scooter throttle right on the steering wheel. This would allow the driver to use as much throttle as wanted on either system.
B) Drive by wire cars and EVs sometimes overlap. My friend Tom built an AC Dodge Neon. The mechanical cable goes to the physical throttle body, where it is connected to a , wait for it...... 0-5Kohm potentiometer! He took out the engine, but left the throttle and connected that as the pot for his motor controller!
C) OBD2 connector. On a '96 or newer car one of the parameters of the data from the OBD2 connector is THROTTLE DATA. Connect the OBD2 to some sort of microcontroller (Arduino or something) to grab the throttle data and convert it into whatever type of signal the motor controller needs. Then you still have a mechanical gas pedal to the engine AND have an electronic one to the motor controller. You could also put programming in there that would limit its output to only certain situations, so you could design it to only run the motor on hard acceleration, or under certain speeds, etc.
That's basically the idea behind the EMIS system.
EMIS - Engine Motor Interface System
In other weird thoughts....
If an electric motor was connected to something other than a transmission, an electric reverse would be needed (as you couldn't use reverse gear) but on a hybrid, it might not be. You could always use the engine to back up. I'm just trying to think of what extra parts in an EV system you could skip, because space will be at a premium with both ICE and EV components.