some hybrids are capable of driving the wheels mechanically from the
engine, ones with a range extender can only charge the battery from the
engine and run the motor from the battery ...
I see that Geely (old London Taxis International) are now producing a
van version of their electric taxi, which might do alright for them I
On Saturday, 25 July 2020 12:34:09 UTC+1, T i m wrote:
Nissan Leaf segues into the E-NV200 series vans and combis which can be ada
pted as camper vans.
When you see how many times the little red Royal Mail vans get stopped and
started every day, and that both hybrids and electrics are particularly goo
d in such usage situations, it seems very sad that every RM van appears to
be diesel. (They might have some non-diesels somewhere, but I don't see any
On Saturday, 25 July 2020 15:36:00 UTC+1, Dave Liquorice wrote:
Both charles and Dave have made pertinent points with which I agree.
I can also see that RM might well value the possibility of one vehicle bein
g able to do a double-round for various reasons. A multi-hour recharge time
makes that impossible. (Yes, I know there are some quick-charge to 80% opt
ions. Also, some have problems doing more than one quick recharge.)
Of course - with enough battery capacity. The point being if you know the
sort of miles it's going to do each day and it's fairly consistent you can
design for it.
London taxis seem to manage pretty well. And the numbers are increasing.
Can't see a London cabbie paying out for something that gave him grief.
*Never underestimate the power of stupid people in large groups.
Dave Plowman email@example.com London SW
Depends on whether your taxi regulations allow any
old car to be selected for service.
Around here, I doubt a taxi driver would bother with a BEV.
They really seem to like "Toyota Prius" :-) Why exactly, who knows.
Maybe it's just less engine idling that they like. Like sitting
at a taxi stand and listening for calls.
I think that (accurate) delineation happens more in / around London
than anywhere in else in the UK and probably around the world (and not
just because they are 'Hackney Carriages' etc). ;-)
eg, Apart from the Tuc Tuc, I think the London 'Taxi' (as opposed to a
'minicab' in London) being mostly the traditional Black Cab is one of
the few examples of using a highly specialised vehicle for that role.
Looking down the Wiki list it seem one of the most commonly used
brands is Toyota, but they all seem to use std production cars.
I wonder if the reason the Prius was picked up quickly by our
Minicabbers was because of how we charge (congestion / emissions etc)
in London? I think other congested cities only allow drivers in on
alternate days etc (so no cost savings for running an EV / Hybrid,
although there may be some of that as well)?
Cheers, T i m
A Prius is much more fuel efficient in stop/go traffic, which is where a lot
of minicabs spend their time. Taxis spend a lot of money on fuel, so they
make a lot of sense for city driving. Also, the Toyota hybrid transmission
is pretty bomb-proof so no clutches, no DPFs, no cambelts, much less engine
wear. They go for 200-400K miles with relatively modest servicing.
Electric motor pullaway, regen braking? (Didn't the Mk1 Prius have
about a 3 mile range on electric only)?
Cool. And that seems to resonate worldwide (so over many driving
conditions, Toyotas in general, not the Prius particularly).
I guess there would be a sweet spot for battery size / capacity and
return on investment for that sort of role.
eg, It might still take a while for battery capacity to catch up with
non-stop IC fuel range and in long trip scenarios, hybrids probably
don't offer much in the way of savings (if any, if you amortise the
initial cost compared with a straight IC car)?
For urban stop start, (and ignoring kerbside emissions for a sec) you
only need as big a battery as required to pull away on electric and
recover as much energy as possible (for the same urban use) without
having any bigger battery than necessary?
I guess that's why the Mk1 Prius had such a small electric only range
(it was never really designed for that use)?
Cheers, T i m
Yes, although pullaway is fairly taxing. Early Priuses didn't have enough
motor power to do a decent electric pullaway up to 30mph so would start the
engine when reaching about 20mph if you weren't extremely gentle on the
accelerator. They've improved that since the Mk3 (2010). Pure electric is
mostly used on low speed cruise (<30mph) where it can stop the engine and
doesn't need much effort to maintain speed.
In stop/start you're creeping a lot so you only get to a few mph before you
need to brake - that can be all electric. And reversing is all electric too
(no need for reverse on the gearbox which simplifies things), and aircon is
electric too (makes a big difference to efficiency if you run aircon when
stationary - no need for continuous engine running).
It depends, but the other things it simplifies can make it worthwhile, both
in terms of reduced component costs (no DPF etc) and reduced maintenance.
Especially if you're going automatic so need an auto gearbox anyway.
Indeed. You can force it into EV mode but it's less efficient than using
the battery in the parts of the cycle where it's most useful It isn't really
an electric car, although the early ones got attention from aftermarket PHEV
conversions (one of which I happen to have in my shed...)
The system has been around for 23 years now. Having driven 2006 and 2016 Toyota
hybrids, things improved quite a lot in that time.
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