Method for pretreating a piezoelectric ceramic and method for adjusting an injection valve

摘要

In a method for pretreating a piezoelectric ceramic ( 1 ) and a method for adjusting an injection valve ( 7 ), the piezoelectric ceramic ( 1 ) is exposed to environmental conditions, leading to a reduction of polarization and also a reduction of the length of the ceramic ( 1 ). The obtained length exhibits a greater long-term stability due to said adjusting phase. Consequently, the injection valve ( 7 ) can be re-adjusted before use. As a result, renewed adjustment thereof is required only after a long period in service.