Internal-combustion engines – Multiple cylinder – Simultaneous compression – distinct pistons – restricted...
Patent
1997-07-11
1998-11-17
Okonsky, David A.
Internal-combustion engines
Multiple cylinder
Simultaneous compression, distinct pistons, restricted...
123 532, 1231974, F01B 902, F02B 7532
Patent
active
058362738
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a reciprocating machine having a cyclical kinematic chain and has been devised particularly though not solely as a cylinder, reciprocating piston and rotary crank shaft assembly for use in an internal combustion engine (I.C.E.). It should be appreciated that this same technology may be applied to similar assemblies in hydraulic apparatus such as pumps and motors and other similar such means in addition to conventional use in combustion engines.
BACKGROUND ART
Reciprocating machines having cyclical kinematic chains described in previous patent specifications disclosing piston, cylinder and shaft assemblies for I.C.E., specifically U.S. Pat. No. 4,809,646, Japan 57-171001, Japan 01-73102 and Germany 4013754 have included dual crank shafts with dual connecting rods (conrods) one from each piston to a respective counter rotating crank shaft, the crank shafts being substantially equidistant from the centre line of travel of the piston. An advantage of such assemblies has been identified as a decrease in friction on the walls of the cylinder.
It is an object of the present invention to provide a reciprocating machine having a cyclical kinematic chain which at least provides the public with a useful choice.
DISCLOSURE OF THE INVENTION
Accordingly, the invention consists in a reciprocating machine including a cyclical kinematic chain in which power is transferred between translational and rotational motion said kinematic chain including a translational means cyclically reciprocatable along a line of motion through a first stroke between a first position and a second position and through a second stroke from said second position back to said first position, said kinematic chain having rotational means in the form of a pair of crank shafts having axes substantially symmetrically disposed on opposite sides of and normal to said line of motion of said translational means, said translational means having a pair of pivotal connecting means the axes of which are parallel and said axes in motion follow paths parallel to said line of motion, said crank shafts each having a crank pin the axis of which follows an orbital path of predetermined diameter in motion, a pair of connecting rods, each having a first end and a second end, the first end of each connecting rod being connected by pivotal connecting means through attaching means to said translational means, axes of said pivotal connecting means being disposed between said translational means and a line between the axes of said crank shafts and said second end of each said connecting rods being rotationally connected to respective said crank pins, the distance between said crank shafts axes, the length of said connecting rods, the position of said pivotal connecting means in relation to said translational means and said predetermined diameter of said orbital paths and the construction and arrangement being such that in motion the ratio of the length of each said strokes to said predetermined diameter is at least 1.1 to 1.
BRIEF DESCRIPTION OF THE DRAWINGS
One preferred form of the invention and modifications thereof will now be described with reference to the accompanying drawings in which:
FIG. 1 is a cross sectional view through a reciprocating machine having a cylinder, piston and kinematic chain in accordance with a preferred embodiment of this invention,
FIG. 2 is a cross sectional elevational view through a part of the machine of FIG. 1,
FIG. 3 is a cross sectional plan view of an alternative arrangement of the part of the machine of FIG. 2,
FIGS. 4, 5, 6 are cross sectional views of further embodiments of the invention showing the effect of different dimensions and dispositions of the elements thereof,
FIG. 7 is a further alternative cross sectional elevation to that part shown in FIG. 2,
FIG. 8 is a cross sectional view of a still further embodiment of the invention showing an alternative translational means, and
FIG. 9 is a cross section on the be 9--9 of FIG. 8.
MODES FOR CARRYING OUT THE INVENTION
As shown
REFERENCES:
patent: 1585796 (1926-05-01), Stahlberger
patent: 3521615 (1970-07-01), Trammell
patent: 4690113 (1987-09-01), Deland
patent: 4809646 (1989-03-01), Paul et al.
patent: 5435232 (1995-07-01), Hammerton
patent: 5595147 (1997-01-01), Feuling
Okonsky David A.
Qintessential Concepts Limited
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