About 82 results
https://drivepatents.com/patents/1109582 · 4 Oct 2001
The invention describes a fuel injection system with a piezoelectric element (10, 20, 30, 40, 50 or 60) for controlling the amount of injected fuel by charging and/or discharging the piezoelectric element (10, 20, 30, 40, 50 or 60), wherein the piezoelectr...
https://drivepatents.com/patents/1109578 · 4 Oct 2001
The invention describes a method and an apparatus for detecting a load decrease when driving a piezoelectric element, for example, used as an actuator in a fuel injection system of an internal combustion engine. The method and apparatus are characterized i...
https://drivepatents.com/patents/1109574 · 4 Oct 2001
A method and an apparatus for diagnosing a fault in a system utilizing a piezoelectric element are described. The system is preferably a fuel injection system. The method is characterized in that piezoelectric elements are used as detectors of a fault in t...
https://drivepatents.com/patents/1109563 · 4 Oct 2001
The invention describes a method and an apparatus for charging a piezoelectric element, for example, used as an actuator in a fuel injection system of an internal combustion engine. The method and apparatus are characterized in that the piezoelectric eleme...
https://drivepatents.com/patents/1109561 · 4 Oct 2001
The invention describes a method and an apparatus for charging and discharging a piezoelectric element, for example, used as an actuator in a fuel injection system of an internal combustion engine. The method and apparatus are characterized in that the pie...
https://drivepatents.com/patents/1109559 · 4 Oct 2001
The invention describes a method and an apparatus for charging a piezoelectric element, for example, used as an actuator in a fuel injection system of an internal combustion engine. The method and apparatus are characterized in that the piezoelectric eleme...
https://drivepatents.com/patents/1109551 · 4 Oct 2001
Fuel injection system comprising a piezoelectric element for controlling the amount of injected fuel and further comprising a control unit for determination of a possible fault of the piezoelectric element or of an electric circuitry driving the piezoelect...
https://drivepatents.com/patents/1109547 · 4 Oct 2001
The invention describes a method and an apparatus for performing a correction to a fuel injection system for, for example, an internal combustion engine. The apparatus is characterized in that a voltage difference deviation is determined for a voltage appl...
https://drivepatents.com/patents/1109540 · 4 Oct 2001
A control method and a control apparatus for a multiple-acting valve (10) within a fuel injection system are described. The method is characterized in that the multiple-acting valve (10) is controlled by a control unit (120) as according to a predefined co...
https://drivepatents.com/patents/1109528 · 4 Oct 2001
Online optimization of injection systems having piezoelectric elements which are used, for example, as actuators in a fuel injection system of an internal combustion engine, wherein the piezoelectric element is activated by an activation voltage having a v...