Technical data

Appendix D
(Reference)
Adjustment Parameters of Fuel Pumps
Table D1 – Adjustment parameters of the 4UTNI, 4UTNI-T fuel pumps
Parameters
Unit of
measure-
ment
4UTNI 4UTNI-T
D-241 D-242 D-243 D-244 D-245 D-245.2 D-245.5
1. Angle of the beginning of fuel in-
jection by the section according to
meniscus before the top dead centre
(over the cam profile)
град
571 571 571 571 571 571 571
2. Rated rotational speed of the pump
camshaft
rpm
1,0505 9005 1,1005 8505 11005 11005 9005
3. Fuel delivery per cycle at the rated
rotational speed
mm
3
/cycle
721.4 741.4 771.4 721,4 941,4 1081.7 821.3
4. Rotational speed at the beginning
of action of the governor
rpm 1,065-
1,080
915-930 1,115-
1,130
865-880 1,115-
1,125
1,115-
1,125
915-925
5. Irregularity of the fuel delivery be-
tween the sections at the rater rota-
tional speed, not more than
% 6 6 6 6 6 6 6
6. Rotational speed corresponding to
the diesel engine idling
rpm 1,110 950 1,160 900 1,175 1,180 960
7. Fuel delivery per cycle at the max-
imum rotational speed of idling, not
more than
mm
3
/cycle 22.5 22.5 22.5 22.5 22.5 22.5 22.5
8. Irregularity of the fuel delivery be-
tween the sections at the maximum
rotational speed of idling, not more
than
% 35 35 35 35 35 35 35
9. Rotational speed corresponding to
the maximum torque
rpm
8505
670
+30
8505
630
+30
700-850 700-850 700-800
10. Rotational speed corresponding
to disengaging the corrector
rpm 980-1,040 830-890 1,030-
1,090
780-845 not more
than
1,090
1,040-
1,090
840-890