| 摘要 |
An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke. |
| 主权项 |
1. An internal combustion engine, comprising:
an engine body including a plurality of left bank combustion chambers and a plurality of right bank combustion chambers; and a first intake manifold positioned on the left bank side and a second intake manifold positioned on the right bank side, each of the first and second intake manifolds attached to the engine body and including a longitudinally extending airflow passage, a body interior surface forming the longitudinally extending airflow passage, a plurality of inlet openings formed in the body interior surface, a plurality of outlet openings, and a plurality of transverse airflow passages, each of the plurality of transverse airflow passages extending between at least one of the plurality of inlet openings and at least one of the plurality of outlet openings and including a longitudinal transverse passage axis, and a passage interior surface, further including at least one fin portion extending radially inward from the passage interior surface into each of the plurality of transverse airflow passages the at least one fin being shaped and sized so as to increase uniformity in combustion between the left and right cylinder banks, the longitudinal transverse passage axis curved to form a transverse passage angle, the transverse airflow passage positioned to intersect the longitudinally extending airflow passage at a transverse passage connection angle. |
