Patent ID: 8469005
Filing Date: 2013-06-25
Classification: F02M

Abstract:
1. A fuel injection system for injecting fuel into a combustion chamber of an internal combustion engine, the fuel injection system, 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 force the injector pin towards the injector seat to seal the injector seat; 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, wherein the thermal compensating unit is configured to compensate for thermal expansion or contraction of the component by viscous dampening or hydraulic pressure; a lower fuel chamber adjacent to the sealable injection seat; and a heating element heating fuel in the lower fuel chamber prior to injection to a temperature between 400° F. and 1400° F.