Applied-ignition internal combustion engine with two cylinder-specific valves and method for mixture formation in internal combustion engine of said type

Abstract

An applied-ignition internal combustion engine having two cylinder-specific valves and a method of forming a mixture in an internal combustion engine of this type are disclosed. The applied-ignition internal combustion engine having at least one cylinder head comprising at least one cylinder and having a rotatably mounted crankshaft is provided. In the internal combustion engine each cylinder hasan inlet opening, which is adjoined by an intake line, and an outlet opening, which is adjoined by an exhaust-gas line, each opening being equipped with a valve, each cylinder comprises a combustion chamber which is jointly formed by a piston crown of a cylinder-specific piston, by a cylinder liner and by the cylinder head. Additionally, the crankshaft is articulably connected to the piston of each cylinder, such that, as the crankshaft rotates about an axis of rotation, the piston oscillates along a cylinder longitudinal axis, where the cylinder longitudinal axis is perpendicular to the axisof rotation of the crankshaft.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from German Patent Application No. 102018207581.6 filed on May 16, 2018. The entire content of the aforementioned application is hereby incorporated by reference for all purposes. technical field [0003] The present specification generally relates to an engine having an inlet valve and intake line arrangement that reduces the tendency to knock in a combustion chamber. Background technique [0004] Previous internal combustion engines have attempted to reduce knock by promoting flow mixing through swirl and tumble flow patterns created in the combustion chamber. Additionally, some engine designs have incorporated vertically aligned valves to increase the engine's compression ratio. However, since the previous intake duct design matched the vertical valves, aligning the valves vertically reduces the amount of tumble in the combustion chamber. Thus, in previous engine designs, there ma...

AI Technical Summary

Problems solved by technology

However, since the previous intake duct design matched the vertical valves, aligning the valves vertically reduces the amount of tumble in the combustion chamber

Therefore, in previous engine designs, there may have been a trade-off between increased compression ratio and the occurrence of roll

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