Internal combustion engine

Details Internal combustion engine Internal combustion engine

2007-06-12

2007-06-12

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Transmission mechanism from piston

Crankshaft and connecting rod

C123S0480AA, C123S0780AA

Reexamination Certificate

active

11313683

ABSTRACT:
An internal combustion engine includes a piston reciprocating in a cylinder; a crankshaft; and a multilink piston-crank mechanism linking the piston with the crankshaft. The multilink piston-crank mechanism includes an upper link having a first end connected with the piston by a piston pin; a lower link mounted rotatably on a crankpin of the crankshaft and having a first end connected with a second end of the upper link by a first connection pin; a control link having a first end connected with a second end of the lower link by a second connection pin; a control shaft connected movably with a second end of the control link and configured to rotate in synchronization with the crankshaft and at a half rotational speed of the crankshaft; and a phase adjusting section configured to variably adjust a phase of rotation of the control shaft relative to the crankshaft in accordance with an operating condition of the engine. The multilink piston-crank mechanism is configured to variably control a piston stroke characteristic of the engine.

REFERENCES:
patent: 4517931 (1985-05-01), Nelson
patent: 5732673 (1998-03-01), Mandella
patent: 6390035 (2002-05-01), Moteki et al.
patent: 1 178 194 (2002-02-01), None
patent: 1 347 159 (2003-09-01), None
patent: 2001-227367 (2001-08-01), None
patent: 2003/013764 (2003-01-01), None
patent: 2005-171857 (2005-06-01), None

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