Essential Technical Parameters; Technical Specifications Of Engines Of Tractors Z 6421 - Z 8441 - Zetor Proxima 6421 Supplement Operators Manual

TECHNICAL SPECIFICATIONS OF ENGINES OF TRACTORS Z 6421 - Z 8441

Type of tractor
Type of engine
Engine
Engine design
Number of cylinders
Stroke volume
Bore x stroke
Nominal speed
Order of injection
Compression ratio
Max. override speed
Idle speed
Net power at nominal speed,
measured acc. to ISO 2288
Specific fuel consumption at
the given power
Max. torque (Mt)
Excess of Mt
Lubrication of engine
Max. consumption of oil after
100 Mh of engine running-in
Pressure of oil at engine
nominal speed and tempera-
ture of oil 80 °C
Minimum pressure of oil at
750 rpm and oil temp. 80 °C
Max. temp. of cooling fluid

ESSENTIAL TECHNICAL PARAMETERS

Z 6421/Z 6441
7205
compression ignition, 4-stroke cycle, direct fuel injection, turbo-
3
cm
mm
-1
min
-1
min
-1
min
kW 45
-1 -1
g.kW .h 257
265
Nm
% 35
-1 -1
g.kW .h 0.7
MPa 0.2 - 0.5
MPa 0.05
°C
Z 7421/Z 7441
1105
charged
in-line, vertical, water-cooled
4
4156
105x120
2,200
1-3-4-2
17
2,460
800±25
53
255
310
35
Pressure system with gear pump
0.7
0.2 - 0.5
0.05
106
34
Z 8421/Z 8441
1205
60
257
351
35
0.7
0.2 - 0.5
0.05