Double crankshaft valved two cycle engine
OwnerChester L. Herbertinventor
Life of this patent
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Abstract
A two cycle engine is disclosed wherein a pair of pistons reciprocate within a common cylinder to operate a pair of crankshafts mounted at opposite ends of said cylinder. Intake mixtures for the cylinder are crankcase-pumped, and both the intake and output ports of each crankcase are valved. This valving prevents combustion within the crankcase and limits the compression volume in order to assure the highest compression of intake gases possible. A piston ring is included at the lower end of the skirt of each piston in order to further reduce the compressed volume.
Claims9
A two cycle internal combustion engine having a power stroke on each rotation of the crankshaft, comprising:
- a cylinder open at both ends and including a plurality of intake ports passing through the cylindrical wall of said cylinder at one end and a plurality of exhaust ports passing through the cylindrical wall of said cylinder at the other end;
- a pair of crankcases connected at opposite ends of said cylinder, each of said crankcases including inlet and output ports;
- a pair of crankshafts mounted in said pair of crankcases;
- a pair of pistons each having a skirt and each connected to one of said crankshafts for reciprocation in opposite ends of said cylinder, the skirt of one of said pistons periodically covering and uncovering said cylinder intake ports and thereby opening and closing said intake ports to said cylinder during said reciprocation and the other of said pistons periodically covering and uncovering said cylinder exhaust ports and thereby opening and closing said exhaust ports to said cylinder during said reciprocation;
- means for connecting both of said crankshafts to a single output shaft to produce output power;
- means for conducting a mixture of fuel and air to said inlet ports of each of said crankcases;
- a manifold connected exclusively to said outlet ports of both of said crankcases and to said plural intake ports of said cylinder;
- a high speed valve mounted on each of said crankcases to periodically open and close said inlet ports of each of said crankcases;
- and
- high speed valve means for preventing detonation of fuel contained in said crankcases, said means mounted on each of said crankcases to periodically open and close said outlet ports of each of said crankcases.
A two cycle internal combustion engine having a power stroke on each rotation of the crankshaft, comprising:
- a cylinder open at both ends, said cylinder including an intake port passing through the cylindrical wall of said cylinder at one end of said cylinder and an exhaust port passing through the cylindrical wall of said cylinder at the other end of said cylinder;
- a pair of pistons reciprocating in opposite ends of said cylinder, said pistons operating to periodically block and unblock said intake and exhaust ports during said reciprocation;
- a pair of compression enclosures mounted and sealed to opposite ends of said cylinder;
- an intake conduit connected exclusively between each of said compression enclosures and said intake port;
- and
- a pair of high speed valve means for preventing the detonation of fuel contained in said compression enclosures, said means mounted at the junction of each of said compression enclosures and said intake conduit for periodically opening and closing each of said compression enclosures to said intake conduit.
Dependencies are inferred from the claim text.