Skoda 105 s 1980 Workshop Manual page 62

Choke - Cold-storting Device (Fig.2.1916)
Bosicolly, the choke is o self-contoined cor-
burettor consisting of o fuel reservoir, o petrol
jet, on oir iet, o vocuum controller, ond o throttle
volve. The mixture is formed in the throttle
volve zone where it is sucked out from under
the corburettor throttle disc.
At increosing engine speed, the rising vocuum
moves the plunger of the choke vocuum control,
t h e h o l e s i n t h e p l u n g e r o v e r l o p o n d t h u s t h e
mixture is enriched outomoticclly. The driver
controls the richness of the mixture by opening
or closing the choke throttle volve.
Auxiliory Devices
Vqcuum connection for the vocuum odvonce
control picks up vocuum (the underpressure)
o b o v e t h e t h r o t t l i n g d i s c o f s t o g e | ( s e e F i g .
2.1st4).
The suction connecticri is led out of the cor-
burettor lower flonge os o tube from under the
throttle disc of stoge ll. The suction prevents
o generotion of vocuum (underpressure) in the
F i 1 . 2 . 1 9 1 4 - S t o g e
16 - Ff oot chomber cover, 17 - Floot chomber
body, 18 - Stoge ll control, complete, 19 - Dio-
phrogm spring, 20 - Diophrogm, 21- Diophrogm
control oir volve - stoge ll, 21A - Diophrogm
c r o n k c o s e d u r i n g i d l e r u n o n d i t r e m o v e s f o r
burning ony residues of unburnt hydrocorbons
which hove got into the cronkcose.
Fi1.2.1913 - Econostot - Rich-mixture System
13 - Econostot oir iet, 14 - Econostot petrol iet,
15 - Econostot mixture iet "2"
I Control Elements
control oir volve - sttfge l, 22- Vocuum con-
nection, 1 ST ond 2 ST - Corburettor stoge I
o n d l l
i:lr
62