As with the previous advance system, the rotor’s force is transferred to the cam ring during injection. This force continually urges the piston toward the…

A second light load advance system, shown in Figure 4-61, is available for automotive applications that use min-max governing. In addition to the normal speed…

As noted previously, inlet metered pumps characteristically retard the start of pumping at light loads. To correct this condition, several forms of light load advance…

The inlet metered DB2 pump (Figure 4-60) has a pumping period with a variable beginning and a constant ending. That is, at minimum throttle positions…

When the pump is operating, the force required to displace the plungers inward plus the momentum of the rotor assembly transmitted by the rollers, produces…

The speed advance device (Figure 4-58) is used to achieve best engine performance through the operating speed range of the engine. Timing advance is needed…

All Stanadyne Diesel Systems DB2 Automotive pumps are equipped with electrical shut-off solenoids. (Figure 4-57). Illustrated here is an energized to run solenoid. When this…

The return oil system (Figure 4-55) performs the following functions. 1.) A controlled flow through the housing maintains stable conditions for the internal parts. 2.)…

Another unique and very simple feature of the DB2 automotive pump is a viscosity compensating device. This component ensures proper transfer pump pressure regardless of…

In order to understand how designed fuel pressures are maintained over a broad range of conditions we’ll now take a closer look at regulator assembly…