FUEL INJECTOR AND METHOD OF MANUFACTURING

摘要

A fuel injector for an internal combustion engine includes a preassembled permanently mated needle and valve body group contained in a main housing assembly. The valve body group is assembled so that the maximum allowable stroke of the needle is established by a stop abutment, which is permanently attached to the valve body. An injector assembled according to the present method does not require the use of various shims in order to set the air gap. Moreover, precision grinding is not needed to establish the needle lift.