Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method of operating a piezoelectric actuator










Image Number 5 for United States Patent #7576473.

A method of operating an injector having an injector valve needle and a piezoelectric actuator for controlling movement of the injector valve needle, the method comprising reducing the voltage across the actuator at a first rate (RT1) in order to initiate an initial injection, increasing the voltage across the actuator in order to terminate the injection, and once the initial injection has terminated and before a subsequent injection is initiated, reducing the voltage across the actuator at a second rate (RT2; RT3), which is lower than the first rate (RT1), so as to de-energise the actuator but without initiating an injection. The invention ensures the injector spends a significantly reduced period of its life with a high voltage across its actuator.








 
 
  Recently Added Patents
Circuit board, method of manufacturing the same, and resistance element
Outlet box adaptor
Garment with lumbar traction device
Method and an apparatus for processing an audio signal
Systems, devices, methods for delivering hydrogel compositions with self-purging to prevent clogging
Flash memory apparatus capable of extending data retention and improving data reliability, and method for controlling the same
Tool fastenable to a drive shaft of a hand-held power tool driveable in an oscillating manner
  Randomly Featured Patents
Lubricant remover for a wrap spring clutch
Interference cancellation system and method
Drilling mud degasser apparatus and method
Method of forming a via overlap
Image processing apparatus
High frequency transmission line capable of improving an intermodulation distortion characteristic in a high frequency device
Personal communications service using wireline/wireless integration
Salmasian inflatable intra-uterine device
tktA
Air-fuel ratio controller for internal combustion engines