Table of Contents
Advertisement
IDROCONVERT TRANSMISSION
353
With selector lever in neutral poslUon (or in
gear
with
knob switch closed) and selector switch
turned to connect terminals 30 and 15/64, current
energises relay (3) and switch (4) and
is
connect-
ed to earth via neutral switch (6) or knob switch (7).
When energised, relay (3) and switch (4) close
the circuit.
More specifically. when relay (3) contacts. make_
the solenoid circuit
is
c:osed.
Operation of the
solenoid will cause the plunger valve to move and
bring about clutch disengagement.
Moreover, when switch (4) contacts flnake. cur-
rent
nows
to starter relay (9); to achieve this
it
will be sufficient to connect terminal (30) to ter
w
minal
(SO).
Upon selection of any gear, switch
(6)
opens
and switch (7) closes.
In
this condition the current
flow remains unaltered so long as the driver clasps
the selector lever knob.
As
soon
as
the driver withdraws
his
hand from
the selector lever, switch (7)
will
open; the cur-
rent
is
cut-off and both relay and switch, as well
as the solenoid, are de-energised.
As
it moves
back, the solenoid operates the plunger valve and
brings about clutch engagement.
DRIVING
THE
CAR
Starting is only possible if the engine is discon-
nected from the transmission.
To achieve this
move selector lever to neutral position.
N. B .• To start the engine with the transmission
in gear slightly depress the knob switch on
selec-
tor lever.
Traditional Driving.
The driver acts
as
with a conventional transmis-
sion - take-off in 1st or 2nd gear and subsequent
up-shifting according to road profile and conditions.
During traditional driving the Idroconvert transmis-
sion enables the driver to obtain the same perfor-
mance as with a conventional gearbox.
The one difference is that gear changing only
requires the movement of the gear selector lever.
Never allow the hand to rest on the selector lever
knob while driving.
Automatic Driving.
During automatic driving It IS possible to obtain
the most suitable gear ratio at
all
times without
having to intervene manually.
IT the driver decides to accelerate, the increase
in engine r .p.m.
will
bring about a speed differ-
ential between impeller and turbine; consequently,
the resulting torque increase is proportional to the
speed differential between turbine and impeller.
The transmission ratio will, therefore. be automatic-
ally determined by the speed differential between
the two rotating members.
When the vehicle slows down owing to road
gradient, etc., the resulting deceleration brings
about a speed differential, and the degree of torque
multiplication
will
be directly proportional to the
reduction of vehicle speed, Le. turbine speed.
The greater the speed differential between im-
peller and turbine the greater
will
be torque mul-
tiplication.
However, torque multiplication does not increase
above a certain limit; the torque converter is de-
signed to give a 2 to I limit above which it will be
necessary to use a gearbox.
The Idroconvert transmission
is
therefore coupled
to a conventional 4-speed gearbox which should be
used according to the instructions given below.
Upon selection of the most suitable gear demanded
Fig. 572 - Car controls.
1. Brake pE:dal. - 2. Accelerator hand control. - 3. Gear selector
leller with integral knob switch.
Advertisement
Table of Contents
