6.1.3. Fuel feed pump 1) General descriptions and construction The P-type injection pump is mounted with K-ADS or KP type feed pump.These pumps have the same basic construction and operation, and the general descriptions of the KP type pump are given below : The figures show its construction (right figure) and operation (below figure). The piston in the fuel feed pump is driven by the push rod and tappet via the camshaft of injection pump and performs reciprocating operation to control the suction and delivery of fuel. When the cam reaches the Bottom Dead Center as shown in the figure, the fuel is drawn in through the check valve on the inlet side.
플라이밍 펌프 Priming pump Check valve 첵크 밸브 Check valve 첵크 밸브 Inlet side 흡입 토출 Outlet side Tappet 피스톤 Piston 타 펫 Cam shaft 캠 축 EQM40 EQM4019I - 135 - MAINTENANCE OF MAJOR COMPONENTS