01-08-2017, 07:40 AM
(This post was last modified: 01-08-2017, 07:44 AM by ppppenguin.)
I hadn't realised that London already some pure electric buses:
http://www.standard.co.uk/news/transport...67256.html
https://tfl.gov.uk/info-for/media/press-...ntral-lond
There are loads of hybrid buses in London though from what I've seen and heard they are very shallow hybrids. They seem to pull away from a stop on batteries but then switch to diesel within a few seconds. Even if the electrics are just doing some load levelling it may be a worthwhile saving as diesels work more efficiently with a more constant output.
The new Routemaster "Boris Bus" I think is a series hybrid (electric motor always drives the wheels) which is relatively unusual. I also think that their powertrain has been unreliable. This is not a damnation of series hybrids in general, just poor engineering in this case.
With their stop-start running, precisely known routes and proper depots they're an obvious choice for pure electric. Likewise any urban stop/start vehicle with well defined routes. That would include delivery vans and dustcarts. http://www.dennis-eagle.co.uk/pdfs/press...015%20.pdf
Most hybrid cars are parallel hybrids, with both the petrol engine and electric motor(s) capable fo driving the wheels. This needs a relatively complex gearbox to combine the 2 sources of power. Unless you take the BMW approach of driving front wheels with one and rear with the other. This is done on their I8 sports car. Also with their 225xe which I'll be getting. I test drove an i3 which ran in pure electric throughout the test drive. It was a lovely car but a bit too small for my needs. If I wanted a city car and didn't mind the high price I'd buy one in an instant. The pure electric version rather than the hybrid which is series hybrid. A small petrol engine recharges the onboard battery as required. It's a very deep hybrid with 100+ miles range on battery alone.
Somebody I know test drove a big Tesla a year or so ago. She's a complete petrolhead and pronounced it the most fantastic car she'd ever driven. If she'd had the money she'd have likely placed an order there and then.
http://www.standard.co.uk/news/transport...67256.html
https://tfl.gov.uk/info-for/media/press-...ntral-lond
There are loads of hybrid buses in London though from what I've seen and heard they are very shallow hybrids. They seem to pull away from a stop on batteries but then switch to diesel within a few seconds. Even if the electrics are just doing some load levelling it may be a worthwhile saving as diesels work more efficiently with a more constant output.
The new Routemaster "Boris Bus" I think is a series hybrid (electric motor always drives the wheels) which is relatively unusual. I also think that their powertrain has been unreliable. This is not a damnation of series hybrids in general, just poor engineering in this case.
With their stop-start running, precisely known routes and proper depots they're an obvious choice for pure electric. Likewise any urban stop/start vehicle with well defined routes. That would include delivery vans and dustcarts. http://www.dennis-eagle.co.uk/pdfs/press...015%20.pdf
Most hybrid cars are parallel hybrids, with both the petrol engine and electric motor(s) capable fo driving the wheels. This needs a relatively complex gearbox to combine the 2 sources of power. Unless you take the BMW approach of driving front wheels with one and rear with the other. This is done on their I8 sports car. Also with their 225xe which I'll be getting. I test drove an i3 which ran in pure electric throughout the test drive. It was a lovely car but a bit too small for my needs. If I wanted a city car and didn't mind the high price I'd buy one in an instant. The pure electric version rather than the hybrid which is series hybrid. A small petrol engine recharges the onboard battery as required. It's a very deep hybrid with 100+ miles range on battery alone.
Somebody I know test drove a big Tesla a year or so ago. She's a complete petrolhead and pronounced it the most fantastic car she'd ever driven. If she'd had the money she'd have likely placed an order there and then.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
