The pneumatically switched flow (PSF) – water pump is based on a conventional centrifugal pump.

A switch unit is integrated in the pump, connected with the low-pressure system of the vehicle. If the coolant pump is switched on, a slide moves over the vane wheel and interrupts the volume flow. The coolant circulation is stopped, and engine warm-up accelerates. This principle can lead to significant fuel saving.

Special features

• Control unit PSF realises switching durations up to 0.1 seconds
• High efficiency

Product specifications

Operating pressure: 2,7 bar

Flow rate: 320 l/min up to 8.450 rpm

A constant water pump is driven by a belt and is based on the principle of a centrifugal pump. With a rotating impeller the centrifugal force is used for transporting liquids.

The coolant, which enters axially into the pump, is forced by the impeller in a circular path to the outside. The stored energy in the fluid increases the pressure in the pump, and pushes the liquid in the spiral and the connected components. The coolant flow rate is directly related to the engine speed.

Special features

• Compact design
• Small installation space
• Good dry-running properties
• Robust components

Product specifications

Flow Rate: 413 l/min

Operating Pressure: 2.7 bar

Temperature Range: -40°C to +110°C

Speed: 0-8500 rpm

The electrically powered auxiliary oil pump based on the displacement principle and Gerotor design. The pump is driven directly by an electric motor via an intermediate shaft. Speed adjustable variably from 0 to approx. 4,000 rpm.

As needed, auxiliary oil pump is activated in fractions of a second and supports the mechanically powered main oil pump, for example, during shifting processes, with up to 20 bar system pressure. Secondary function is the clutch cooling mode with low pressure and high volumetric flow rates (up to 12l/min).

Special features

• Robust
• Long-lasting
• Temperature compensation
• Constant gap over all temperatures
• Lower losses at high temperatures
• Individual, efficiency-optimised Gerotor
• Compact design space
• Improved cold start behaviour
• Reduced internal friction

Product specifications

Flow rate: 345 l/min at 8067 rpm

Operating pressure: 2,45 bar bei 8067 rpm

Temperature range: -40°C up to +140 °C

Speed: 0-10300 rpm

The Switchable ECF (Electro hydraulically Controlled Flow) Water Pump is based on a hydraulic control of the internal control unit. This one is working on the on-/off-principle.

When the water pump is in the deenergised state ("on"), the coolant flow is unhindered transported from the spiral channel into the engine block of the internal combustion engine.

In the energised state ("off") the magnet valve is triggered and this causes that the internal hydraulic circuit is closed. Thereafter it builds up a pressure and the control slide moves mechanically through the impeller. This results in an interruption of the coolant flow rate ("standing water"). The return of the control slide in the deenergised state is saved by a return spring.

Special Features

• Independent from vacuum
• Fast engine heating causes a reduction of fuel consumption and emissions
• Minimisation of leakage risk due to the elimination of static sealing points
• Low installation space needed
• Power reserves when switching
• Fail-safe function: a full delivery is guaranteed even if there is a control failure

Product Specifications

Flow Rate: 230 l/min @ 4800 rpm

Operating Pressure: 1.5 bar @ 4800 rpm

Temperature Range: -40°C up to +140°C

Speed: 0-6230 rpm

The pneumatically switched flow (PSF) – water pump is based on a conventional centrifugal pump.

A switch unit is integrated in the pump, connected with the low-pressure system of the vehicle. If the coolant pump is switched on, a slide moves over the vane wheel and interrupts the volume flow. The coolant circulation is stopped, and engine warm-up accelerates. This principle can lead to significant fuel saving.

Special features

• Control unit PSF realises switching durations up to 0.1 seconds
• High efficiency

Product specifications

Operating pressure: 2,7 bar

Flow rate: 320 l/min up to 8.450 rpm

A constant water pump is driven by a belt and is based on the principle of a centrifugal pump. With a rotating impeller the centrifugal force is used for transporting liquids.

The coolant, which enters axially into the pump, is forced by the impeller in a circular path to the outside. The stored energy in the fluid increases the pressure in the pump, and pushes the liquid in the spiral and the connected components. The coolant flow rate is directly related to the engine speed.

Special features

• Compact design
• Small installation space
• Good dry-running properties
• Robust components

Product specifications

Flow Rate: 413 l/min

Operating Pressure: 2.7 bar

Temperature Range: -40°C to +110°C

Speed: 0-8500 rpm

The electrically powered auxiliary oil pump based on the displacement principle and Gerotor design. The pump is driven directly by an electric motor via an intermediate shaft. Speed adjustable variably from 0 to approx. 4,000 rpm.

As needed, auxiliary oil pump is activated in fractions of a second and supports the mechanically powered main oil pump, for example, during shifting processes, with up to 20 bar system pressure. Secondary function is the clutch cooling mode with low pressure and high volumetric flow rates (up to 12l/min).

Special features

• Robust
• Long-lasting
• Temperature compensation
• Constant gap over all temperatures
• Lower losses at high temperatures
• Individual, efficiency-optimised Gerotor
• Compact design space
• Improved cold start behaviour
• Reduced internal friction

Product specifications

Flow rate: 345 l/min at 8067 rpm

Operating pressure: 2,45 bar bei 8067 rpm

Temperature range: -40°C up to +140 °C

Speed: 0-10300 rpm