Piezoelectric operated fuel control valve has a flexible membrane to transmit the movement of the actuator to the valve

摘要

The piezoelectric actuator (2) pushes a bar (4) against a spring (6) and protrusions (5) deflect the membrane (3) so that a portion in the centre (30) between semi-circular bearings (8) is urged upwards opening the valve (14) supplying fuel to the injection piston (22).