About 82 results
https://drivepatents.com/patents/1109523 · 4 Oct 2001
Fuel injection system having a piezoelectric element for controlling the amount of injected fuel into a combustion engine, wherein electric power for driving the piezoelectric element is supplied by an electric power source, and wherein the fuel injection ...
https://drivepatents.com/patents/1109519 · 4 Oct 2001
The invention describes a fuel injection system comprising a piezoelectric element for controlling an amount of injected fuel, by charging and discharging the piezoelectric element using a driving circuitry, and a current diagnosis unit capable of detectin...
https://drivepatents.com/patents/1109507 · 4 Oct 2001
A method and an apparatus for controlling system parameters, in particular for controlling the voltage applied to piezoelectric elements (10, 20, 30, 40, 50, 60) within a circuit (A) for charging and discharging piezoelectric elements (10, 20, 30, 40, 50, ...
https://drivepatents.com/patents/1109509 · 4 Oct 2001
The invention describes a method and an apparatus for a fuel injection system with a piezoelectric element for controlling the amount of injected fuel by charging and/or discharging the piezoelectric element, wherein the fuel injection system comprises a c...
https://drivepatents.com/patents/1109502 · 4 Oct 2001
The invention describes a method and an apparatus for uniformly polarizing a piezoelectric element that, for example, can be used as an actuator in a fuel injection system of an internal combustion engine. The method and apparatus are characterized in that...
https://drivepatents.com/patents/1109500 · 4 Oct 2001
A method and an apparatus for controlling system parameters, particularly in fuel injection systems are described. The method is characterized in that first system parameters, in particular voltages across piezoelectric elements, are modified by modificati...
https://drivepatents.com/patents/1109494 · 4 Oct 2001
Fuel injection system and method for operating the fuel injection system, in which a piezoelectric element drives a valve for closing a pressurized fuel supply line by applying a voltage to said piezoelectric element, wherein the voltage necessary to close...
https://drivepatents.com/patents/1109496 · 4 Oct 2001
The invention describes a method and an apparatus for charging a piezoelectric element of a fuel injection system for, for example, an internal combustion engine. The apparatus is characterized in that the piezoelectric element is activated by an activatio...
https://drivepatents.com/patents/1109483 · 4 Oct 2001
The invention describes a method and apparatus for operating a fuel injection system having a piezoelectric element (10, 20, 30, 40, 50 or 60) for controlling the amount of fuel injected into a combustion engine, characterized in that the piezoelectric ele...
https://drivepatents.com/patents/1109485 · 4 Oct 2001
Fuel injection system comprising a piezoelectric element for controlling the amount of injected fuel into a combustion engine, the fuel injection system further comprising a driving circuitry for driving the piezoelectric element, the driving circuitry com...