Zetor Proxima 6421 User Manual

34
ESSENTIAL TECHNICAL PARAMETERS
TECHNICAL SPECIFICATIONS OF ENGINES OF TRACTORS Z 6421 - Z 8441
Type of tractor Z 6421/Z 6441 Z 7421/Z 7441 Z 8421/Z 8441
Type of engine 7205 1105 1205
Engine compression ignition, 4-stroke cycle, direct fuel injection, turbo-
charged
Engine design in-line, vertical, water-cooled
Number of cylinders 4
Stroke volume cm
3
4156
Bore x stroke mm 105x120
Nominal speed min
-1
2,200
Order of injection 1-3-4-2
Compression ratio 17
Max. override speed min
-1
2,460
Idle speed min
-1
800±25
Net power at nominal speed,
measured acc. to ISO 2288
kW 45 53 60
Specific fuel consumption at
the given power
g.kW
-1
.h
-1
257 255 257
Max. torque (Mt) Nm 265 310 351
Excess of Mt % 35 35 35
Lubrication of engine Pressure system with gear pump
Max. consumption of oil after
100 Mh of engine running-in
g.kW
-1
.h
-1
0.7 0.7 0.7
Pressure of oil at engine
nominal speed and tempera-
ture of oil 80 °C
MPa 0.2 - 0.5 0.2 - 0.5 0.2 - 0.5
Minimum pressure of oil at
750 rpm and oil temp. 80 °C
MPa 0.05 0.05 0.05
Max. temp. of cooling fluid °C 106

Zetor Proxima 6421 Specifications

General

Brand	Zetor
Model	Proxima 6421
Category	Tractor
Language	English