Generator for vehicle fuel flowmeter - has hollow cylindrical housing with generator servo piston, slidable between closing and flow position

摘要

The generator casing has a fuel inlet and outlet ports and houses a generator body, at least partly of magnetic material, and exposed to the fuel flow. According to the flow rate the body slides in the casing. A retaining coil forms part of an LC-oscillation circuit. The coil inductivity is affected by the position of the generator body. The casing (2) is of tubular shape, in which the generator body forms a servo-piston (3). The piston sliding takes place between a stop position (a) and a flow position (b). The piston skirt (5) abuts sealingly on the inner wall (6) of the casing. The fuel inlet port (9) is arranged in one casing front side (8), forming the stop position end. The fuel outlet port (14) is formed in a part (10) of the casing wall covered by the piston skirt in its stop position, while being free in the pistons flow position.