Engine speed affects pump flow in the following ways:1. As engine speed increases, so does oil flow rate per any given swashplate position. For anygiven flow request, the ECM will DESTROKE the pump to maintain oil flow if engine speedincreases.2. As engine speed decreases, so does the oil flow rate at any given swashplate position. For anygiven flow request, the ECM will UPSTROKE the pump to maintain oil flow if engine speeddecreases.