Two part piston assembly

Internal-combustion engines – Adjustable combustion chamber – Piston in head adjusted

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Details

123 78B, F02B 7504

Patent

active

045151148

ABSTRACT:
A two-part piston assembly is disclosed for increasing the removal of exhaust gases from an internal combustion engine during the exhaust stroke. The two-part piston (14a), (16a), shown in several embodiments, may include an appropriately adjusted spring assembly (54), (56), (50), (52) to insure that the assembly will be in a compressed state during compression and a distended state during exhaust. This can also be accomplished by a cam mechanism (78) having a ratchet (110) with pawls (114), which operate on the angular movement of the crankshaft (18) with the cam operating a cam follower (80) producing the same result as in the previous embodiments.

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