Fuel system
fuel delivery pump
Fuel primary pressure "low pressure"
(overflow valve in the Y091 dispensing unit)
bar
Approx. 6
Fuel delivery rate (at rated engine speed: 2100 rpm)
Note:
The delivery rate is dependent on:
- speed of the fuel delivery pump
- fuel temperature
- primary and counter pressure at the fuel delivery pump
l/min
5
Specification applies to: 839/../...to - 842/../....
Injection system
System
-
Deutz Common Rail
(DCR)
Electronic engine management
-
Bosch EDC 17
High-pressure pump
-
Bosch PF 45-20
Injector
-
Bosch CRIN 3.3
Mapping field of regulated rail pressure (min/max)
bar
350 to 1950
DBV - rail pressure limit (2-stage DBV) opening pressure/
holding pressure
bar
2300/400 to 980
Mapping field of regulated start of delivery (SD)
-
Bosch EDC 17
Mapping of dependent pre-injection
-
Bosch EDC 17
Specification applies to: 839/../...to - 842/../....
Valves
Number of inlet valves
Units
2
Number of exhaust valves
Units
2
Valve clearance: inlet valve / exhaust valve
with a cold engine (under 80°C)
degrees
75/120
Locknut on valve adjustment screw
Nm
20
Valve recess, inlet valve
(measured from the valve head to the cylinder head sealing
surface)
mm
0.9 +0.15/-0.1
1. Overall system/tractor
1-38
FENDT 800 Vario S4
X990.005.530.013
