Fuel injector

摘要

A fuel injector comprises a first needle (13), and a second needle (20) slidably within a passage formed in the first needle (13). The needles (13, 20) are engageable with respective seatings to control fuel delivery through respective groups of outlet openings. Load transmitting means are provided whereby movement of the first needle (13) can be transmitted to the second needle (20). Also described is an injector in which a second needle (20) is provided with formations defining an integral resilient biasing arrangement.