Patented SALERI waterpump solution helps to reduce consumption
In order to decrease the level of CO2 emissions the major contribution asked to water pumps in new generation engines is to reduce the warm-up phase.
Traditional water pumps, cooling down the engine when it is still cold, prolong the heat-up phase: Saleri’s solution, enables to “block” the pump outlet, therefore allowing the engine to reach faster the working temperature.
The EECU (Electronic Engine Control Unit) though electrical impulses manages a vacuum actuator that is connected to a regulation valve. A membrane inside the actuator moves attracting the arm linked to the throttle valve, which closes.
In this situation the water pump, even if working, does not generate any flow rate (not needed when engine is cold).
The device is “fail-safe” : in case of failure the valve remains open, enabling the water pump to work ordinarily. In this way the advantages linked to the regulation are lost, but there is no risk of overheating the engine with the consequent possible damages.
When the engine reaches the working temperature, the EECU stops providing the vacuum to the actuator, which opens the valve enabling the water pump to start cooling the circuit.
Fitting a different actuator (not “on-off” but characterized by different positions), the device can provide a progressive inlet flow-rate and therefore a progressive cooling action, according to the needs of the engine.
This solution patented by Saleri assures an optimal outcome, both in terms of reduction of consumptions and pollutant emissions, through a simple, light and economical device.
Moreover, the system is really versatile, because it can easily be adapted to all-kind of engines and existing mechanical water pumps, which is why it could become a favourite option for vehicle manufacturers in the future.
