Diesel Distributor Fuel-Injection Pumps VE - Gnarlodious

Cold-start compensationThe diesel engine’s cold-start characteristicsare improved by fitting a coldstartcompensation module which shiftsthe start of injection in the “advance”direction. Operation is triggered eitherby the driver using a bowden cable inthe cab, or automatically by means ofa temperature-sensitive advance mechanism(Fig. 11).Mechanical cold-start accelerator(KSB) on the roller ringMechanical cold-start accelerator (KSB)engaging in roller ring (cold-start position)1 Lever, 2 Access window, 3 Ball pin,4 Longitudinal slot, 5 Pump housing, 6 Roller ring,7 Roller in the roller ring, 8 Timing-device piston,9 Torque-control pin, 10 Sliding block. 11 Timingdevicespring, 12 Shaft, 13 Coil spring.1 2 3 456Add-onmodulesand shutoffdevicesDesign and constructionThe KSB is attached to the pumphousing, the stop lever being connectedthrough a shaft to the inner leveron which a ball pin is eccentricallymounted. The ball pin’s head extendsinto the roller ring (a version is availablein which the advance mechanism engagesin the timing-device piston). Thestop lever’s initial position is definedby the stop itself and by the helicalcoiled spring. Attached to the top ofthe stop lever is a bowden cable whichserves as the connection to the manualor to the automatic advance mechanism.The automatic advance mechanism ismounted on the distributor pump, whereasthe manual operating mechanism isin the driver’s cab (Fig. 12).Fig. 1113 1210 9Method of operationAutomatically and manually operatedcold-start accelerators (KSB) differ onlywith regard to their external advancemechanisms. The method of operation isidentical. With the bowden cable notpulled, the coil spring pushes the stoplever up against the stop. Ball pin androller ring are in their initial position. Theforce applied by the bowden cableMechanical cold-start accelerator (KSB), advance mechanism with automatic operation(cold-start position)1 Clamp,2 Bowden cable,3 Stop lever,4 Coil spring,5 KSB advance lever,6 Control devicesensitive to thetemperature ofthe coolant andthe surroundings.1 21178UMK0373YFig. 123 4 5 6UMK0372Y41