Internal-combustion engines – Frame construction – Horizontal cylinder
Reexamination Certificate
2002-03-11
2004-12-07
Yuen, Henry C. (Department: 3747)
Internal-combustion engines
Frame construction
Horizontal cylinder
Reexamination Certificate
active
06827057
ABSTRACT:
BACKGROUND OF INVENTION
1. Field
The present invention concerns piston/cylinder type engines, particularly internal combustion engines and gas compressors, wherein in accordance with the present invention the cylinders are angle bored, e.g., up to about 15 degrees or more with respect to the bore of conventional engines wherein each cylinder bore is aligned with both of its associated crankpin axis and crankshaft axis at top dead center and bottom dead center of the piston. The present angle bore gives enhanced operation to the engine such as increased horsepower and/or efficiency.
2. Prior Art
The concept of parallel offsetting of the cylinder bore axis to one side of the crankshaft axis in order to enhance the operations of internal combustion engines and compressors is well documented in the literature as evidenced by U.S. Pat. Nos. 3,985,475; 5,186,127; 5,394,839; and 5,076,220, the disclosures of which are hereby incorporated herein in their entireties.
It is apparent from these disclosures that at least most of the major structural components of these engines such as cylinder block, crankshaft, crankpin, connecting rod, camshaft, head, intake and exhaust systems and the like must be specifically designed to accommodate the offset, as well as altering operative elements of combustion such as ignition timing. In other words such offset engines are, for the most part, manufactured from the ground up rather than by a simple modification of existing conventional engines or of their manufacturing processes.
The present invention makes it a relatively simple matter however, to modify an actual existing conventional single cylinder, “in-line” or “V” engine, or to modify its manufacturing process to produce the present angle bored cylinder engine whereby giving the cylinder bore an angled axis is the only significant structural alteration required.
SUMMARY OF THE INVENTION
The present invention is summarized as a piston/cylinder type engine wherein the basic components of the engine are constructed and arranged as a standard production single cylinder, “in-line”, “opposed cylinder”, or “V” engine, but wherein one or more cylinders are bored at an angle “&agr;” of from about 0.025° up to about 15° around the axis or very near, e.g., a few thousandths of an inch, the axis of the wrist pin affixing the piston to a connecting rod at TDC, to thereby rotate the bore axis generally laterally of the crankshaft axis while retaining intersection of the crankshaft axis with the wrist pin axis as in conventional engines.
REFERENCES:
patent: 5131355 (1992-07-01), Bukovics et al.
patent: 5203857 (1993-04-01), Terwilliger et al.
patent: 5947697 (1999-09-01), Morrison
patent: 6158402 (2000-12-01), Taguchi et al.
patent: 6244238 (2001-06-01), Takahashi et al.
patent: 02149731 (1990-06-01), None
Ali Hyder
Yuen Henry C.
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