Saab 95 1967, Руководство по обслуживанию

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Idling system
When the engine is idling, the throttle valve IS almt0:;ere
fully closed (regulated by the idling screw) 50 tha
will be a large vacuum under the throttle valve. the
The vacuum in the idle air channel emanating Md” be
throttle valve, will then be so great as to cause fuel'tloidle
drawn up through the main jet and throlJQ!1 a Spec'a ccu-
fuel channel up to the idle fuel jet, consustmg 0f a: Z is
rately calibrated constriction of the channel. The l: ecial
then partly mixed with the air admitted through : peon-
air channel. The fuel-air mixture then passes anot er
d receives more air "0m a pressure~equalising
strictlon,an. laced further down in the neck of the Car-
hole. which I5 Prpose of this is to get the correct rela-
buretor. The 9:" fuel and air, before the mixture — via
tionship betwentrol scl' ew __ is suctioned into the engine,
the mixture coke the transition from idling system to
In order to "13 re uniform’ there is -— in the carburetor
main System m: the idle mixture control screw — a slot,
neck, Just abo‘; visible when the throttle valve is opened,
Tyczyzzginfleives its fuel from the idling system.
IS
8 5274
IDLING SYSTEM
1. Idle air jet
2. Idle air channel, mixing air
3. Idle fuel channel
4. Idle mixture control screw
200—16 ‘