Volvo 819 E Service Manual page 51

24
EZ- 117K
B230FIFT
F/FT;
(740 : B 230 760 : B 230
The control unit (1 computes
pulses to the power stage (2) at
primary winding of the ignition
priate spark plug by the distributor
The timing is computed
- The engine load signal
with load signals by the
- A Hall generator in the distributor
- Knock is indicated by
the throttle
- Any tendency of the engine
the timing by if the throttle
th e optimum timing based
exactly the right
coil (3). The high-tension
(4).
by the control unit on the basis
is supplied by the fuel injection system
meter.
(4) supplies
the knock sensor (24).
is ind icated by the throttle switch
t o overheat is indicated by
is closed. (This applies only
Design and function
2
EZ-117K
on signals from the
instant. At this point, the power stage interrupts the current
cu rrent induced in the
of the following
(lH· 2.21 control
an engine speed and crankshaft
(19).
a thermostat (20).
to B 230 FT
28
Group Ignition systems
- System descriptions
various sensors and transmits
secondary is delivered to
information :
unit (12) wh ich, in
position signaL
In this event, the con trol
variants.!
ignition
in the
the appro-
turn , is supplied
49