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Machine description
Machine description
Diesel engine
The machine is equipped with a four-cylinder,
water-cooled diesel engine with direct injection.
The engine has an overlying camshaft and the cylinder
head is shared by all the cylinders.
The engine is also equipped with a system for
after-treatment of exhaust fumes (DPF Diesel Particle
Filter).
Exhaust after-treatment system
To minimize particles and hydrocarbons, the engine is
fitted with a diesel particle filter, as well as a control
unit for after-treatment of exhaust fumes. The diesel
particle filter incorporates active burnout.
When the engine is running, particles are collected in
the DPF, and the particles have be burned away in
order to clean the filter.
During the burnout/regeneration process, the exhaust
gas temperature increases significantly above the
normal temperature in the exhaust pipe.
Electrical system
The machine has the following control units (ECU,
Electronic Control Unit) and electronic units.
• Main ECU (for the machine)
• Diesel engine control unit (ECM)
Propulsion system/Transmission
The propulsion system is a hydrostatic system with a
hydraulic pump supplying two motors connected in
parallel, one for the rear axle and one for the drum.
The speed of the machine is proportional to the angle
of the control lever (the deflection of the
forward/reverse lever regulates the speed). A flow
divider is available as an option.
Brake system
The brake system comprises a service brake,
secondary brake and parking brake. The service brake
system produces retardation of the propulsion system,
i.e. hydrostatic braking.
Reserve/Parking brake
The reserve and parking brake system consists of
sprung multiple disc brakes in the rear axle and the
drum drive, which are released by hydraulic pressure.
2023-05-26
4812165001.pdf
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