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US 11,988,135 B2Granted
Cleaner, more efficient engines
OwnerRonald A. Hollandinventor
Life of this patent
Estimating the term…
Abstract
An internal combustion engines keeps the pistons at or near the End Of Stroke (EOS) for the whole time or most of the time that fuel is burning or while fuel is injected into the engine. A scotch yoke embodiment includes a curved slot to extend the piston's time at (EOS). A second embodiment includes a cam on the crankshaft and a follower. The shape of the cam extends the piston's time at (EOS).
Claims20
A thermodynamic cycle of operation of internal combustion engines, the improvement comprising:
- coupling at least one piston to at least one crankshaft by at least one follower fixedly attached to the at least one piston and translating with the at least one piston;
- the at least one follower in intimate contact with the at least one crankshaft converting rotation of the at least one crankshaft to linear motion of the at least one piston;
- and
- the cooperation of the at least one crankshaft and the at least one follower holding the at least one piston at or near End of Stroke (EOS) longer than a convention internal combustion engine.
1 more element
A two stroke per cycle internal combustion engine comprising:
- at least one cylinder having a centerline (CL);
- at least one piston;
- at least one follower fixedly attached to the at least one piston, the at least one follower translating with the at least one piston parallel with the centerline (CL) of the at least one cylinder;
- at least one crankshaft coupled to the at least one piston by intimate contact of the at least one follower with the at least one crankshaft to push the at least one piston into the at least one cylinder during a compression stroke;
- the at least one piston coupled to the at least one crankshaft by the at least one follower to rotate the at least one crankshaft during a power stroke;
- and
- wherein the coupling holds the at least one piston at or near End Of stroke (EOS) longer than a convention internal combustion engine.
4 more elements
A two strokes per cycle, direct fuel oil injected, internal combustion engine comprising:
- at least one cylinder;
- at least one crankshaft;
- at least one piston and follower;
- a follower portion of the at least one piston and follower in intimate contact with the at least one crankshaft to couple rotation of the at least one crankshaft with translation of the a piston portion of the piston and follower translating within the at least one cylinder,
- wherein the cooperation of the at least one piston and follower with the at least one crankshaft holds the at least one piston portion at or near Top Dead Center (EOS) longer than a convention internal combustion engine.
2 more elements
Dependencies are inferred from the claim text.