"Capitol" wrote in message
...


Doctor Drivel wrote:

Much wrongness again. The petrol motor is one of two motors that
combine as
"one entity" to give the power/torque characteristics of one electric
motor.
There is no CVT/gearbox between only one of the motors and the wheels,
as
the two motors are as one.

You have big trouble grapsing this simple concept.


True, your grasp is not complete!
The gearbox is an epicyclic,

There is no gearbox. You refer to the power splitter

with 3 driven shafts and 3 motors. Two of which can function as
generators.
This produces a CVT transmission

It does not produce a CVT transmission at all. No more than an electric
motor on an EV is an electric CVT transmission. The power splitter presents
the two motors as one total motor that can deliver the power/torque to the
diff. THERE IS NO in-line CVT!!!!

An electric transmission is: a petrol motor genny - electric motor -
wheels. All in line. Ferdinad Porche stared out using this with two large
motors reaching 80mph in the 1900s.

CVT: petrol motor-CVT gearbox-wheels. All in-line

Prius:
petrol motor:-
:- wheels
electr motor:-

Note: no CVT

which is then geared down to road speed
with the chain reduction drive and differential gears.

The only variable aspect is the management system varying power splitter to
attain the output characteristics of one electric motor, which is presented
to the wheels.

(apparently, they only changed the epicyclic gear ratios on the later
Prius, although they relabeled it as CVT) The effect of using the
Atkinson cycle is to produce an ICE which will only operate
satisfactorily at certain rotational speeds, thus the electric motors
have to compensate for the engine shortcomings. The effect when you
drive the car hard, can be similar to the unwanted gearshifting of a
poor auto gearbox, with the torque applied at the wheels suddenly
changing when you don't want it to as the 3 power components don't quite
mesh perfectly!

Not my experience at all..

It is of interest to note, that the latest
Toyota eco car that I have
seen, has a diesel engine

Oh no!

and I believe a normal CVT transmission.

Oh no.

This gives 100mpg claimed!

With appalling performance, smelly , noisy, complex, high emissions, bla,
bla, bla. Give it a miss.

BTW, the Prius is longer then the Mk1 1 Avensis saloon, wider and higher,
with more interior space. The Avensis is not a small car by UK standards.