Fuel injection valve has piezoelectric or magnetostrictive actuator in chamber with seal containing at least two elastomer seals arranged in series to form permeation-resistant seal

摘要

The fuel injection valve has a piezoelectric or magnetostrictive actuator (10) in an actuator chamber (11) sealed against the fuel and a valve closure body (5) that can be actuated by the actuator via a valve needle (6) that works in conjunction with a valve seat surface (4) to form a seal seat. The seal contains at least two elastomer seals (20,21) arranged in series to form a permeation-resistant seal.