Subaru Crosstrek PHEV Swap Project
Posted: Tue Oct 10, 2023 2:13 pm
Hello all!
I'm looking for resources/information on what it takes to control an E-CVT in its intended configuration but an aftermarket application. By E-CVT I mean specifically the Subaru/Toyota TH-2A, but could be generalized to any CVT with this type of configuration (2 MG units, no belt). From browsing this forum a bit it seems like for pure EV applications these types of "transmissions" are used with the ICE input constrained and the unit as a whole used purely as an electric drive system. I'm curious if anyone has used on of these e-CVTs with an ICE and used aftermarket inverters/controllers hardware or software.
I've been tossing around the idea of swapping this transmission (the TH2A) into an older Subaru, and using it as it was intended by Subaru in the Crosstrek Hybrid. The goal would be to create a Subaru platform plug-in hybrid with an unrestricted ICE (the one in the crosstrek PHEV is de-tuned to 130hp) and the ability to combine ICE & EV power like in the Rav4 Prime, rather than what Subaru does in the crosstrek which is limit power (combined output is ~150hp). My two main concerns are:
Any help/ideas/input would be awesome, thanks!
I'm looking for resources/information on what it takes to control an E-CVT in its intended configuration but an aftermarket application. By E-CVT I mean specifically the Subaru/Toyota TH-2A, but could be generalized to any CVT with this type of configuration (2 MG units, no belt). From browsing this forum a bit it seems like for pure EV applications these types of "transmissions" are used with the ICE input constrained and the unit as a whole used purely as an electric drive system. I'm curious if anyone has used on of these e-CVTs with an ICE and used aftermarket inverters/controllers hardware or software.
I've been tossing around the idea of swapping this transmission (the TH2A) into an older Subaru, and using it as it was intended by Subaru in the Crosstrek Hybrid. The goal would be to create a Subaru platform plug-in hybrid with an unrestricted ICE (the one in the crosstrek PHEV is de-tuned to 130hp) and the ability to combine ICE & EV power like in the Rav4 Prime, rather than what Subaru does in the crosstrek which is limit power (combined output is ~150hp). My two main concerns are:
- The reason Subaru detuned the ICE and doesn't combine ICE and EV power in the Crosstrek is because it would blow up the transmission.
- Designing a control system to elegantly switch between EV/ICE modes and vary speed/power between the two MG units and the ICE would be insanely complex.
Any help/ideas/input would be awesome, thanks!