Pump has valve(s), preferably inlet valve(s), that determines parameter(s) dependent on pressure in pump cylinder and switching time of valve depending on the measured parameter

摘要

The pump has at least one valve, preferably an inlet valve (8) with a sensor (10), that determines the parameter(s) dependent on the pressure in the pump cylinder (3), especially the pressure change per unit time and the switching time of the valve depending on the measured parameter. The valve is actuated electromagnetically and the opening or closing times are determined using stored tables or characteristic fields.