Wiper system with injection by differential pressure valve

A wiping system for a motor vehicle, comprising:

• a wiper blade configured to wipe a visibility zone of a windshield of the vehicle;
• at least one first spray element able to receive cleaning fluid and to spray the cleaning fluid;
• at least one second spray element able to receive cleaning fluid and to spray the cleaning fluid;
• an injection assembly which is able to selectively inject cleaning fluid toward the at least one first spray element or toward the at least one second spray element, the injection assembly comprising-includes at least a first dual-pressure pump able to inject cleaning fluid at at least a first pressure level and a second pressure level, the injection assembly also includes a first differential pressure valve, the first valve being able to receive cleaning fluid and to transmit the cleaning fluid toward the at least one first spray element when the cleaning fluid is received at the first pressure level and to transmit the cleaning fluid toward the at least second spray element when the cleaning fluid is received at the second pressure level.