Bukh DV36/48 Workshop Manual - page 67

009W2329.XLS

H7 

Fuel System 

The fuel is pumped by a lift pump (29 from the tank via a fine filter (30) to the internal wing 

feed pump. This feed pump gives a constant quantity/revolution. 

Through the pressure control valve (31), after the feed pump, a pressure is produced. Most 

of the fuel flows through the pressure control valve back to the suction side. The remaining 

part of the fuel flows through the inner chamber of the pump (fuel chamber) (25) to the high 

pressure chamber of the distributor head and then it is led to cooling and bleeding and then 

back to the tank through the overflow throttle (14). 

The distributor piston (23) is activated by the drive shaft (2). By means of the cam disc (26) 

and the rollers in the roller cage (28) the piston obtains an axial motion besides the rotary 

motion. 

The delivery (high pressure) takes place by means of the axial motion of the piston. The 

distribution to the individual outlets (22) is through a slit in the distributor piston. 

The injection stops when the governor slide (24) disengages the transversing hole in the 

distributor piston. The fuel flows back into the fuel chamber of the pump (25). 

The governor slide (24) is controlled by the centrifugal governor.