Internal-combustion engines – Means to whirl fluid before – upon – or after entry into... – Structural projection on working piston causes whirling
Patent
1980-09-22
1982-11-16
Lall, P. S.
Internal-combustion engines
Means to whirl fluid before, upon, or after entry into...
Structural projection on working piston causes whirling
123193CH, 123193CP, 123193P, 123193H, 123290, 123262, 123269, 123257, F02B 2308
Patent
active
043590276
ABSTRACT:
Disclosed is a two-cycle, internal combustion engine including an engine block, and a cylinder in the engine block having a head and generally opposed inlet and outlet walls respectively including at least one intake port through which a fresh charge is admitted into the cylinder and at least one outlet port through which exhaust gases are exhausted from the cylinder. A piston is mounted for reciprocative movement inside the cylinder between a first position spaced from the cylinder head wherein the intake port is uncovered, a top dead center position, and a third position wherein the piston approaches the top dead center position. The piston has a top, an inlet face portion which periodically covers and uncovers the intake port and an outlet face portion which periodically covers and uncovers the outlet port. The piston and cylinder have a configuration causing increased swirling of the fresh charge in the cylinder as the piston moves from the third position to the top dead center position. The piston and cylinder are constructed so as to form two spaced apart chambers in the cylinder when the piston is in the third position and for causing that portion of the charge in one of the chambers to be forced into the other of the chambers as the piston moves to the top dead center position.
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Lall P. S.
Outboard Marine Corporation
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