Diesel Engine Wet Cylinder Sleeve:

Most diesel engines are multi-cylinder engines and classically have their cylinders arranged in one of two ways, an in-line or a "V", while other combinations exits. In an in-line engine, as the name denotes, all the cylinders are in a row. Within a "V" categories engine the cylinders are arranged in two rows of cylinders set at an angle to every other which align to a general crankshaft. Every group of cylinders making up one side of the "V" is referred as a bank of cylinders.

Figure: Diesel Engine Wet Cylinder Sleeve