Hybrid AWD conversion

[freebeard]

cRiPpLe_rOoStEr -- Permalink #13.

Should be biking -- Everything you describe is needed for any electric installation, hybrid or pure EV. At Permalink #5 I pointed to the thread on installing the Toyota MGR. I don't think anyone has succeeded, at least with MPaulHolmes' Open Revolt controller. I wanted a pure EV install in my Beetle, but it is as you describe.

The easier option would be an GM E-assist altermotor installed on the MR2 ICE replacing the alternator and starter. ecomodder.com/forum/showthread.php/controller-mods-build-e-assist-altermotor. You can get by on 72-115V, much less expensive and dangerous.

But the ask is for four-wheel drive.

[Tahoe_Hybrid]

Originally Posted by freebeard

cRiPpLe_rOoStEr -- Permalink #13.

Should be biking -- Everything you describe is needed for any electric installation, hybrid or pure EV. At Permalink #5 I pointed to the thread on installing the Toyota MGR. I don't think anyone has succeeded, at least with MPaulHolmes' Open Revolt controller. I wanted a pure EV install in my Beetle, but it is as you describe.

The easier option would be an GM E-assist altermotor installed on the MR2 ICE replacing the alternator and starter. ecomodder.com/forum/showthread.php/controller-mods-build-e-assist-altermotor. You can get by on 72-115V, much less expensive and dangerous.

But the ask is for four-wheel drive.

buy a RWD suv then convert it


the E assist is interesting wouldn't applying an external power screw with the ignition timing ?? also what if the transmission was not married to the engine speed... i.e cvt


i'm interested in the E assist.. so i could run it a cruising speed my has auto stop below 30mph... this presents an issue

[Autobahnschleicher]

Originally Posted by freebeard

cRiPpLe_rOoStEr -- Permalink #13.

Should be biking -- Everything you describe is needed for any electric installation, hybrid or pure EV. At Permalink #5 I pointed to the thread on installing the Toyota MGR. I don't think anyone has succeeded, at least with MPaulHolmes' Open Revolt controller. I wanted a pure EV install in my Beetle, but it is as you describe.

The easier option would be an GM E-assist altermotor installed on the MR2 ICE replacing the alternator and starter. ecomodder.com/forum/showthread.php/controller-mods-build-e-assist-altermotor. You can get by on 72-115V, much less expensive and dangerous.

But the ask is for four-wheel drive.

That wouldn't allow me to drive without the ICE engaged, wich would be significantly less efficient.
The main reason for hybridisation is to run purely electric whenever possible.
Also there isn't any space for a larger alternator in the engine bay of the MR2 Spyder.
The alternator is cramped between cylinder head, block, intake, firewall and part of the roof.

[Isaac Zachary]

Another idea would be to go "all EV" but add a small ICE as a range extender.

The problem is finding a small water cooled engine that provides enough power. Of course if you drive down the Autobahn you'll need more power to keep your speed up. Maybe a modified outboard motor off a boat.

Another problem is small ICE to generator to motor efficiency will likely get you worse gas mileage.

[cRiPpLe_rOoStEr]

Originally Posted by freebeard

Permalink #13

That's a different transmission, 2WD only and no dual-range.

[Piotrsko]

Originally Posted by Isaac Zachary

The problem is finding a small water cooled engine that provides enough power. Of course if you drive down the Autobahn you'll need more power to keep your speed up.

I think I figured out that a proper voltage reconfigured genset of 6hp was enough wattage capacity to drive my Ranger at street speeds up to 40mph. A dual cylinder 25 hp genset should do enough watts to drive pretty much everything else modern

[Autobahnschleicher]

Originally Posted by Piotrsko

I think I figured out that a proper voltage reconfigured genset of 6hp was enough wattage capacity to drive my Ranger at street speeds up to 40mph. A dual cylinder 25 hp genset should do enough watts to drive pretty much everything else modern

25 hp would be sufficient for 135 km/h in case of my car, but IMHO it would be easier to just have a seperate electric drivetrain for shorter trips as well as using it in combination with the ICE for longer trips in what would essentialy be a very stretched out pulse&glide strategy.

[Isaac Zachary]

One idea I had once was to bolt a sprocket to each of the CV axle flanges coming out of the transaxle and to hook up two small electric motors, one to each chain drive to each sprocket. Is finding the room to do that that's the hard part. Also the motors would be always connected, which would not be ideal for long distance cruising but would double as a hybrid system if it has regenerative braking.

[Autobahnschleicher]

Originally Posted by Isaac Zachary

One idea I had once was to bolt a sprocket to each of the CV axle flanges coming out of the transaxle and to hook up two small electric motors, one to each chain drive to each sprocket. Is finding the room to do that that's the hard part. Also the motors would be always connected, which would not be ideal for long distance cruising but would double as a hybrid system if it has regenerative braking.

Yea, that's usualy not a bad idea, but in my case the motor would be wedged between the engine and the exaust header with little airflow.
That's a little hot for an electric motor...

[Isaac Zachary]

Water cooled motor?