Hi,
The first battery powered car I read about. had the expected electric motor and batteries but also a small petrol generator to charge the batteries.
The generator ran constantly, and was set to run at Best Condition, so charged the batteries at a steady rate.
The electric motor had to handle the intermittent, and variable, drain caused by hills and acceleration, but overall, consumption and generation balanced out. It's hills and acceleration that drink the amber liquid.
This was a home brew, maybe 50 to 60 years ago. 125 mpg was claimed.
Slightly more recently. COMMERCIAL MOTOR (I think) MAGAZINE put a Citroen 2CV powered van (the name escapes me) through their "Four Stops per Mile" test.
Standing start ... accelerate hard to 30mpg ... cruise ... stop at the quarter mile post ... repeat ad nauseum.
The Citroen achieved 18mpg, probably because there was scarcely any cruising involved.
A Moskvich van, with a 1500cc engine (BMW copy) achieved 26mpg for the same test ... and normal running.
Different information source, the 1958 Jaguar 2.4 (Inspector Morse shape) returned 18mpg (normal driving) and 18mpg (cruising at a steady 100mpg).
The above seems to suggest that an IC (or CI) engine running at a steady speed, coupled to a electric generator to smooth the "humps" demanded of a battery powered vehicle, has much to commend it.
What's the fuel consumption of an electro-diesel railway locomotive .... steady speed, no hills, and gentle accelaration ... but heavy? And will it fit into an S2?
602
Overtaken by Gareth ...
You’d think with the name E-Up! it would be made in Yorkshire!!
Should I copyright the model name ..... "Ekky-Thump" ?