New designs and adaptation methods are experimented to ensure compliance to ever increasing\nemissions and efficiency requirements of modern diesel engines. Piston head structure which influences\nthe mixing rate and timing of the fuel within in the combustion chamber is known to enable\nincrease in combustion efficiency and thus lower emission rates. In this paper, computation\nanalysis of flow within a diesel engine cylinder with a twin swirl combustion chamber design\nthroughout a full cycle is presented. The results obtained indicate that the effect of the twin swirl\ncombustion chamber on the cold flow conditions is noteworthy and further analysis together with\nexperiments may reveal information that may prove to be useful in further new designs.
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