7 The 2-stroke diesel engine is an internal combustion engine with the five events common to all such engines. First is intake, when a blower forces air alone into the cylinder. Compression, squeezing the air into a small volume. This is when fuel is sprayed into the chamber. Ignition. Just as with a 4-stroke diesel engine, the heat of the ThePV diagram of a 2 stroke diesel engine helps engineers analyze the overall performance of the engine, including factors such as compression ratio, cylinder pressure, heat release rate, and work produced by the engine. By studying the PV diagram, engineers can optimize the engine’s design and operation to achieve better efficiency usedfour-stroke diesel engines is the Selandia. The ship sailed the ocean with 8-cylinder four-stroke engines, housed within enormous containers more than twice the height of an average sailor (Marine Diesels). 2.2. Engine Process The four-stroke engine makes use of four distinct piston strokes for its operating cycle (see fig. 1). Atwo-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being LargeDiesels: f~ 55% ~ 98% ideal efficiency ! Diesel Engine Characteristics (compared to SI engines) Better fuel economy. Overall lean, thermodynamically efficient. Large displacement, low speed – lower FMEP. Higher CR. CR limited by peak pressure, NOx emissions, combustion and heat transfer loss. maintainedfour-stroke trunk piston diesel . Fig. 3 – Example of on board fuel treatment plant. engine will consume some 0.3 to 0.5 g/kWh of lubricating oil. The two-stroke crosshead engine case . In the four-stroke trunk piston engine, the cylinder liner is virtually “over-lubricated” with, as mentioned above, an oil scraper Theburning of fuel in an engine cylinder (2 stroke or 4 stroke diesel engine) will result in the production Email * of power at an output shaft, some of the power produced in the cylinder will be used to drive the rotating masses of the engine. Typical indicator diagram for a 2 stroke engine is shown in figure below. This power card or pv marine2 -stroke dies el engine . Figure 2 shows a schematic diagram of the two -stage turbo-charging system and diesel cycle of the 2 -stroke engine. The two-stage turbo charging configuration consists of turbines and com-pressors at the low -and high-pressure ends, and between the com-pressor and the engine for each high-pressure cooler. and low .

2 stroke diesel engine diagram