Internal combustion engines

Details Internal combustion engines Internal combustion engines

2000-03-10

2001-03-20

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Transmission mechanism from piston

Crankshaft and connecting rod

C123S0780AA, C123S197300

Reexamination Certificate

active

06202623

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to internal combustion engines of reciprocating piston type and is concerned with such engines which include one or more pistons, each of which is mounted to reciprocate in a respective cylinder and is pivotally connected to a connecting rod which is connected to a respective crank on a crankshaft, the connecting rod being pivotally connected to one end of an elongate link member which is pivotably connected to the associated crank at a point intermediate its ends and whose other end constitutes a rod which is restrained by a mounting such that it may pivot about a pivotal axis parallel to the axis of the crankshaft. The invention is also particularly, though not exclusively, concerned with engines of the general type disclosed in EP-A-0591153.
SUMMARY OF THE INVENTION
This prior document discloses an engine in which the or each piston is caused to move over at least a portion of the cycle at a rate which is such that the graph of its displacement against time differs from the sinusoidal shape which is inherently produced in conventional engines in which each piston is connected to a respective crank on a crankshaft by a respective connecting rod. In such a conventional engine attempts are made to match the combustion of the fuel/air mixture to the motion of the piston but the philosophy underlying the construction of the prior document is that the combustion is permitted to proceed in the optimum manner and the piston is caused to move in a manner which “follows” the combustion and is related to the nature and progress of the combustion process.
BRIEF DESCRIPTION OF THE DRAWING
Further features and details of the invention will be apparent from the following description of one specific embodiment which is given by way of example with reference to the accompanying highly diagrammatic drawing, which is a partly sectional scrap view of part of a multi-cylinder four stroke engine of which only one cylinder and the associated piston and the piston connecting mechanism are shown.


REFERENCES:
patent: 2506088 (1950-05-01), King
patent: 4890589 (1990-01-01), Miyate
patent: 5218933 (1993-06-01), Ehrlich
patent: 6009845 (2000-01-01), Ehrlich
patent: 0 248 655 (1987-12-01), None

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