2585383 - Introduction - ENGINE CRANKCASE
The cylinder block/crankcase is made from cast iron with closed-deck type cylinder liners/bores.The crankshaft is supported by five main bearings.There are special channels in the engine block walls which allow the flow of coolant and lubricating oil.Oil jets cool the pistons.
The diagram below illustrates the oil jets for cooling the pistons.
Operation
There are four oil jets (1) for cooling the piston crown located in the lower part of the cylinder liner/bore (2). The oil jet is directed so that it partly lubricates the machined housing of the connecting rod and piston gudgeon pin.The jets incorporate a ball valve which opens at a pressure of about 1.1 bar.Components
Oil jets for cooling the pistons.
Components
There are four jets (1) in the lower part of the cylinder liners/bores from which oil is sprayed; the jet is directed in such a way that it cools the piston crown and lubricates the gudgeon pin machined housing.