Internal-combustion engines – Multiple cylinder – Cylinders in-line
Patent
1982-12-20
1985-11-19
Feinberg, Craig R.
Internal-combustion engines
Multiple cylinder
Cylinders in-line
123 78F, 123332, F02B 7526
Patent
active
045535086
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
Technical Field
The present invention relates to internal combustion engines and particularly to an internal combustion engine the compression ratio of which can be changed during operation.
Most internal combustion engines operate inefficiently over a portion of their speed range because of incomplete combustion. Thus, combustion may fail to take place all the way to the peripheral walls of the cylinder or all the way to the bottom of the stroke. Not only does efficiency suffer, but also objectionable unburned or partially burned products of the combustion process are emitted. Altering the engine compression ratio at various speeds in a manner such that more constant combustion takes place at the various speeds would be of advantage. However, difficult practical problems have been encountered heretofore in changing the compression ratio of an operating engine.
DISCLOSURE OF INVENTION
In accordance with the present invention in a principal embodiment thereof, a plurality of cylinders each receive a piston therewithin to define a combustion chamber and each cylinder combustion chamber is provided with means for selectively communicating a fuel-air mixture thereto and for communicating exhaust gases therefrom. A plurality of connecting rods, one extending from each of said pistons, are provided with cam followers and each engages a rotating cam means such that upon respective power strokes the cam followers bear against the cam means and rotate the same for delivering output power. According to a feature of the present invention, the cam means and the cam followers are relatively moveable toward and away from the cylinders to vary the compression ratio of the engine.
In accordance with another feature of the present invention, supercharging chambers are defined by said cylinders on the opposite sides of said pistons from the combustion chambers. A fuel-air mixture is compressed by the supercharging chambers and delivered to the combustion chambers.
In accordance with another feature of the present invention, the respective pistons are each provided with a helical end surface for producing a swirling action with respect to gases within the corresponding combustion chambers.
It is accordingly an object of the present invention to provide an improved and more efficient internal combustion engine.
It is a further object of the present invention to provide an improved internal combustion engine which emits a decreased proportion of unburned or partially burned products of the combustion process.
It is another object of the present invention to provide an improved internal combustion engine, the compression ratio of which may be readily altered.
It is another object of the present invention to provide an improved internal combustion engine having an improved horsepower-to-weight ratio.
Also in accordance with a feature of the new engine, an adjustable follower for a valve operating cam can bring about an adjustable valve opening period. Thus the relative time the intake valve is opened can be increased with increased engine speed so as to provide a more adequate fuel-air mixture intake to compress.
As an additional feature, an intake device may be employed to substantially shut off the supply from the carburetor to the engine when decelerating. At that time, an alternate passage provides increased air as an intake to the engine such that objectionable emissions are reduced.
The subject matter which I regard as my invention is particularly pointed out and distinctly claimed in the concluding portion of this specification. The invention, however, both as to organization and method of operation, together with further advantages and objects thereof, may best be understood by reference to the following description taken in connection with the accompanying drawings wherein like reference characters refer to like elements.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a perspective view of an internal combustion engine according to a first embodiment of the present invention with portions broken away for
REFERENCES:
patent: 1666539 (1928-04-01), Michell
patent: 1788140 (1931-01-01), Woolson
patent: 2237621 (1941-05-01), Herrmann
patent: 2237989 (1941-05-01), Herrmann
patent: 2243817 (1941-05-01), Herrmann
patent: 2243818 (1941-05-01), Herrmann
patent: 2243819 (1941-05-01), Herrmann
patent: 2243820 (1941-05-01), Herrmann
patent: 2243821 (1941-05-01), Herrmann
patent: 2243822 (1941-05-01), Herrmann
patent: 2284319 (1942-05-01), Herrmann
patent: 2957463 (1960-10-01), Schnabel
patent: 2966899 (1961-01-01), Herrmann
patent: 2983264 (1961-05-01), Herrmann
patent: 3016110 (1962-01-01), Herrmann
patent: 3598094 (1971-08-01), Odawara
patent: 4022167 (1977-05-01), Kristiansen
patent: 4090478 (1978-05-01), Trimble et al.
patent: 4149498 (1979-04-01), Ferrell
patent: 4157079 (1979-06-01), Kristiansen
patent: 4294139 (1981-10-01), Bex et al.
Hall; "More Power From Less Engine"; SAE Journal (Transactions), vol. 47, No. 6; Dec. 1940; pp. 504-519.
"Transportation Pistons Times Two"; Popular Mechanics; Jan. 1982; p. 149.
Palmer et al; "The Dyna-Cam Engine"; Sport Aviation; Sep. 1981; pp. 41, 42 and 84.
Dellett John P.
Feinberg Craig R.
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