Fuel injection valve for direct injection of fuel into combustion chamber of internal combustion engine, has nozzle body with castellated structure around its periphery

摘要

When an actuator is in a non-actuated state, a valve-closing body is held so as to seal against a valve seat surface (6) by the action of a return spring acting on a valve needle. The nozzle body (3) has a castellated structure around its periphery comprising gaps and protrusions. The number of protrusions and gaps is variable.