Patent Number: 7,762,236

Title: Piezoelectric fuel injector having a temperature compensating unit

Abstract: The present invention provides a fuel injector, comprising a housing having a sealable injector seat; a fuel injector pin disposed within the housing proximate to the injector seat such that the injector seat may be sealed and unsealed by displacing the fuel injector pin; a resilient element biasing the fuel injector pin in an unsealed direction; a piezoelectric actuator disposed within the housing proximal to the fuel injector pin configured to actuate to force the injector pin towards the injector seat to seal the injector seat; and a thermal compensating unit disposed within the housing proximal to the actuator and configured to compensate for thermal expansion or contraction of a component of the fuel injector.

Inventors: Frick; Michael J. (Newbury Park, CA), Cheiky; Michael C. (Thousand Oaks, CA)

Assignee: Transonic Combustion, Inc.

International Classification: F02M 51/00 (20060101); F02M 53/00 (20060101)

Expiration Date: 7/27/12018