FUEL INJECTION SPRAY PATTERNS FOR OPPOSED-PISTON ENGINES

摘要

A combustion chamber for an opposed-piston engine includes a squish zone defined between circumferential peripheral areas of opposing end surfaces of the pistons, a cavity defined by one or more bowls in the end surfaces, and at least one injection port that extends radially through the squish zone into the cavity. The cavity has a cross-sectional shape that imposes a tumbling motion on air flowing from the squish zone into the cavity. Opposing spray patterns of fuel are injected into the combustion chamber. Charge air is admitted into the bore from the intake port (224) as the pistons move from respective bottom dead center positions in the bore, a tumble component (343) is added to the motion of the air in the combustion chamber (300), and spray patterns (381) of fuel (248) are injected into the combustion chamber (300) in opposing radial directions of the cylinder.