cycleops612
10 kW
This is madness. Why such slow penetration for hybrid (optionally plug in) in areas where its a cost saving no brainer, like stop start utility vehicles?
Instead of targeting obvious low hanging fruit, marketing and fantasyland tree huggers have hijacked EVs into some "statement" that clearly isnt cost effective - ie. is having little effect on total ~petrol consumption.
Here is how simple it is to have an anybrand urban delivery vehicle or bus. Take one existing model, swap the unpowered front or back wheels for wheels with hub motors. Add suitable battery and cheap ~stock electronic controllers from the ebike world.
The important parameter is that maximum use be made of regen braking. Initial acceleration should maximise use of electric, even if it flattens the battery. Getting rolling is what electric is stunning at, and what iceS and their drive trains are horrible at.
As the motors are focused on this single task, no gearing is needed.
If engines only had to engage at even 5kph, an entirely new and less wasteful ICE could be used (as in prius atkinson engine)
https://en.wikipedia.org/wiki/Atkinson_cycle
Whatever, for an unsuited ICE to provide initial rolling torque, is a major restriction on ideal efficient ICE design.
The battery should prioritise fast charge and discharge, and of course weight.
The engine remains similar, but can be lesser power & weight, given the highway and acceleration are lesser considerations.
Batteries dont have to be big, heavy,costly. Just sufficient to make good use of regen.
I have a simple & cheap idea for rapid charge/discharge storage that adds ~no weight. Make the spare tire a flywheel.
I cant believe this ~philosophy isnt a good deal for urban buses, even in the 3rd world as retrofits on old buses.
The greater the mass and the more stop start, the more the benefit.
Instead of targeting obvious low hanging fruit, marketing and fantasyland tree huggers have hijacked EVs into some "statement" that clearly isnt cost effective - ie. is having little effect on total ~petrol consumption.
Here is how simple it is to have an anybrand urban delivery vehicle or bus. Take one existing model, swap the unpowered front or back wheels for wheels with hub motors. Add suitable battery and cheap ~stock electronic controllers from the ebike world.
The important parameter is that maximum use be made of regen braking. Initial acceleration should maximise use of electric, even if it flattens the battery. Getting rolling is what electric is stunning at, and what iceS and their drive trains are horrible at.
As the motors are focused on this single task, no gearing is needed.
If engines only had to engage at even 5kph, an entirely new and less wasteful ICE could be used (as in prius atkinson engine)
https://en.wikipedia.org/wiki/Atkinson_cycle
Whatever, for an unsuited ICE to provide initial rolling torque, is a major restriction on ideal efficient ICE design.
The battery should prioritise fast charge and discharge, and of course weight.
The engine remains similar, but can be lesser power & weight, given the highway and acceleration are lesser considerations.
Batteries dont have to be big, heavy,costly. Just sufficient to make good use of regen.
I have a simple & cheap idea for rapid charge/discharge storage that adds ~no weight. Make the spare tire a flywheel.
I cant believe this ~philosophy isnt a good deal for urban buses, even in the 3rd world as retrofits on old buses.
The greater the mass and the more stop start, the more the benefit.