Damper for centrifugally-adjusted engine injection-timing - has spring acting axially and delaying relative rotation between driving and driven shafts

摘要

The timing mechanism has centrifugal weights moved in opposition to return springs and sliding along smooth concave curved paths. They cause relative rotation between the driving and fuel-pump shafts.Damping is by a purely mechanical spring (1) acting in the axial direction of the timing mechanism (2). This delays the relative rotation between the driving (3) and pump (6) shafts. Where there is a screw acting via a washer so as to clap a driven shaft onto that of the fuel pump, the washer having a stop flange and a centring spigot, the spring system can consist of a plate spring (1) bearing against the washer (6) and the driving shaft. ADVANTAGE - Protects against effect of shock-loads from pump without affecting speed of timing adjustment.