Patent ID: 8820294
Filing Date: 2014-09-02
Classification: F01B,F02B,F02M,F16C,Y02T

Abstract:
1. A method for operating an internal combustion engine including at least one cylinder with an exhaust port longitudinally-separated from an intake port, a pair of pistons disposed in opposition to one another in a bore of the cylinder, and a combustion chamber defined in the bore between end surfaces of the pistons, in which charge air is admitted into the bore from the intake port as the pistons move from respective bottom dead center positions in the bore, an elongated, ellipsoidal combustion chamber is formed between bowls on the end surfaces of the pistons, a tumble component is added to the motion of the air in the combustion chamber, and spray patterns of fuel are injected into the combustion chamber in opposing radial directions of the cylinder.