NA-05 - Cleaning: Vehicles and Technology

Pumps

High-pressure pump comparison

Table: 
Comparison of the types of high-pressure pumps used in cleaning vehicles according to [Jurth1997]
Characteristic feature
Piston pump
Hydraulic pressure transducer
Max. Pressure up to 170 bar
 		 up to 200 bar
 
Max. Pump performance capacity in liters bis 390 l/min bis 500 l/min
Required motor speed approx. 1.300 bis 1.800 U/min max. 1.500 U/min
Drive via a drive shaft mounted to the auxiliary drive; torque is transmitted via v-belt
 		 via a hydraulic motor mounted to the auxiliary drive; power transmission from the hydraulic motor to the pump
 
Driving power at 325 l/min equal to 110 kW at 340 l/min equal to 137 kW
Relief valve required
 		 not required
 
Water return line required
 		 not required
 
Sensitivity to dirt particles in the flushing water very sensitive; stringent requirements regarding water quality
 		 relatively insensitive; much less stringent requirements regarding water quality
 
Number of strokes 500 to 750 strokes/min 22 strokes/min
Wear high low
Maintenance costs high low
Acquisition costs low high
Space requirements less space requirements due to compact construction
 		 large space requirements
 
Noise emission high very low
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