Idle Final Speed Control

When adjusting the injection pump, the injection rate is adapted to the requirements of the engine's required load rate. With the constant valve, the fuel injection pump is to raise the injection curves with speed and constant control valve travel. This rising injection rate curve is in a partial load range, because the injection rate rises faster than the engine's required load rate.

There are unstable control ranges (hesitation while driving). Consequently the duty of partial load adjustment is to reduce the injection rate in partial load range with constant load and increasing speed.