PARALLEL CIRCUIT
Figure 40. Two motors in parallel circuit.
Two motors in parallel circuit generate double torque and run half slower than one
motor with the same flow rate and pressure.
Note:
The flow distribution of the motors must be ensured, if the operating
conditions are very slippery or if some of the powered wheels carry much
smaller load. The system prefers to rotate only the motor, which has the
least resistance.
The flow distribution may be done by sizing the working lines to a certain
flow rate or by throttling them slightly.
Ordinary flow divider valve can not be used in most cases, because its
resistance of flow increases too much as the speed of the vehicle
increases.
The flow distribution is usually required only when starting to move the
vehicle. A reliable solution is a flow divider valve, which can be bypassed
or switched on when necessary.
Figure 41. A pilot controlled flow divider valve.
SERIES CIRCUIT
Figure 42. Two motors in series circuit.
Two motors in series circuit generate same torque and rotate as fast as one motor
with the same flow rate and pressure.
Attention:
The minimum pressure and a sufficient feed flow must be ensured for all
motors.
The use of series circuit is challenging and therefore is not recommended.
System Design
40
Product Manual
