Internal combustion engine having an auxiliary combustion chamber without an intake valve

摘要

An internal combustion engine having a main combustion chamber associated with intake and exhaust valves and an auxiliary combustion chamber having no intake valve. The auxiliary combustion chamber is positioned adjacent the intake port and has an electrode of a spark plug or plugs positioned therewithin. A plurality of passages fluidly communicate the main and auxiliary combustion chambers. One passage opens toward the intake valve and at least one other passage opens asymmetrically relative to the first passage about the central axis of the auxiliary combustion chamber. The auxiliary combustion chamber is free of any internal fluid flow obstructions. A stream of sucked gas introduced into the auxiliary combustion chamber through the one passage is turned by the interior walls of the auxiliary combustion chamber to flow in a path in the form of a loop and is then expelled through the other passage.