Mercedes-Benz U 4023, Техническое руководство, Страница: 3 / 121

Contents – Part A
Overview of models and components ................................ 6
Product concept ................................................................... 7
Unimog model series in comparison .................................. 7
Extreme off-road capability ................................................ 8
The Unimog concept for extreme torsional flexibility ......... 9
Angle of approach / departure and ramp breakover angle 10
Fording capability ............................................................. 11
Optional equipment – fording capability .......................... 12
Frame ................................................................................... 13
Frame concept ................................................................. 13
Optional equipment – frame ............................................ 15
Engine .................................................................................. 17
Engine concept ................................................................ 17
Drive clutch ...................................................................... 19
High-performance engine brake ....................................... 20
Engine control .................................................................. 20
Exhaust gas aftertreatment – BlueTec 6 .......................... 21
Exhaust emissions – limiting values ................................. 23
Regeneration .................................................................... 24
Radiator system .............................................................. 25
Optional equipment – engine ........................................... 26
Transmission ....................................................................... 27
Main transmission ............................................................ 27
Overview .......................................................................... 28
Engine management ........................................................ 29
Electronic Quick Reverse (EQR) ....................................... 30
Optional equipment – transmission ................................. 31
Axles .................................................................................... 33
Portal axles ...................................................................... 33
Axle suspension ............................................................... 35
Torque tube technology .................................................... 36
Drive system .................................................................... 37
Single tyres ...................................................................... 38
Optional equipment – axles.............................................. 39
Brakes .................................................................................. 43
Dual-circuit braking system .............................................. 43
4-channel ABS .................................................................. 44
Optional equipment – brakes ........................................... 45
Steering ............................................................................... 46
Power steering ................................................................. 46
Optional equipment – steering ......................................... 47
Technical Manual
Mercedes-Benz Special Trucks 2
Contents