DL06 Operation and Maintenance z Oil gallery cooling is used for the piston of the engine. The design of the gallery, the design and location of the oil spray nozzle and the quantity of oil flowing in the gallery are critical in order to achieve the desired temperature reduction. The cross section shape of the gallery should be designed to achieve sufficient oil movement to maximize cooling efficiency. 2.3.1. Cylinder block z The cylinder block is a single piece of alloy cast iron. To increase its stiffness, it is extended to a level below the crankshaft center line. The engine has replaceable dry cylinder liners and a cylinder head. 2.3.2.
Piston, connecting rod, crank shaft z The forged crankshaft has screwed-on the balance weights. Radial seals with replaceable wearing rings on crankshaft and flywheel are provided to seal the crankcase penetrations. z The connecting rods are die-forged, diagonally split and can be removed through the top of the cylinders together with the pistons. Crankshaft and connecting rods run in steel-backed lead bronze ready-to fit type bearings. 2.3.3. Electric control unit : ECU z This electric control unit is used to control the engine feed fuel. z ECU is connected with various sensors, control the engine to keep the optimum condition on the basis of input values from this sensors.
21 Technical Information Printed in Nov. 2006 PS-MMA0418-E1A