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
Churn prediction and management system
Laboratory spatula
Hardware/software debugging using memory access parameters
Digital media content distribution
Parallel power inverter motor drive system
Process for the enzymatic reduction of enoates
Near-field transducers for focusing light
  Randomly Featured Patents
Apparatus and method for providing digital multimedia broadcast service using an external device and a digital TV
Method for forming aggregation body by thermocompression
Aqueous dispersion, internally silylated and dispersed polyurethane resins, and surfaces containing same
Cellulose compound hollow fiber membrane
Control panel for an engine operated generator
Image-forming optical system
Umbrella handle
Self-planarized gap-filling by HDPCVD for shallow trench isolation
Block copolymers
Conveyance apparatus and related method of operation