Abstract: A piezoelectric actuator for use in a fuel injector, the actuator comprising a stack of one or more piezoelectric elements for receipt within an accumulator chamber of the injector, distribution electrode means for generating an electric field within the stack and an electrical connector arrangement including a body member defining an external boundary and including a base portion and a stem portion projecting from the base portion. The base portion defines a base end face for abutment with an adjacent end face associated with the stack. Terminal means are provided for connection with an external power supply. The terminal means includes first and second terminal members disposed internal to the external boundary of the body member. The first and second terminal members are arranged side by side and disposed internal to the external boundary of the body member.

Abstract: A piezoelectric actuator for use in a fuel injector, the actuator comprising a stack of one or more piezoelectric elements for receipt within an accumulator chamber of the injector, distribution electrode means for generating an electric field within the stack and an electrical connector arrangement including a body member defining an external boundary and including a base portion and a stem portion projecting from the base portion. The base portion defines a base end face for abutment with an adjacent end face associated with the stack. Terminal means are provided for connection with an external power supply. The terminal means includes first and second terminal members disposed internal to the external boundary of the body member. The first and second terminal members are arranged side by side and disposed internal to the external boundary of the body member.