초록 ▼

A single piston internal combustion engine is described that produces two power impulses per revolution of the crankshaft, precise mechanical balance, zero side thrust upon the piston, and purified exhaust gas. The lubrication oil is isolated from contamination by blowby and fuel dilution. Total eng

A single piston internal combustion engine is described that produces two power impulses per revolution of the crankshaft, precise mechanical balance, zero side thrust upon the piston, and purified exhaust gas. The lubrication oil is isolated from contamination by blowby and fuel dilution. Total engine cooling is obtained from the lubrication oil. The engine is free from shock loads as it is cushioned by continuously compressing gas in preparation for the next combustion event. The engine is uniflow-scavenged utilizing piston pumps whose fresh air intake is controlled by rotary valves. The piston pumps possess compact aftercoolers used in combination with supercharging. The exhaust header assists in silencing the engine and removes fluctuations in exhaust pressure. A computer-aided specialized mechanical balance methodology is disclosed that obtains counterbalance weights to optimally reduce engine shaking forces. The engine is suitable for operating on alternative fuels such as liquified natural gas, and alcohol.

대표청구항 ▼

A two-stroke cycle internal combustion engine comprising: (a) first, second, and third axially elongated cylinders disposed in axial alignment; (b) a piston assembly possessing first, second, and third pistons disposed in axial alignment, spaced axially apart, and fastened upon first and second holl

A two-stroke cycle internal combustion engine comprising: (a) first, second, and third axially elongated cylinders disposed in axial alignment; (b) a piston assembly possessing first, second, and third pistons disposed in axial alignment, spaced axially apart, and fastened upon first and second hollow rods; (c) said first and second hollow rods joined together by a hollow nipple within the interior of said second piston, thereby forming a sealed toric cavity within said second piston; (d) said piston assembly disposed to reciprocate in the axial direction within said axially aligned first, second, and third cylinders, wherein said first, second, and third pistons possess top and bottom dead center positions within said cylinders; (e) said second cylinder, closed at one end by a first head and closed at the remaining end by a second head, in which said second piston possesses a double crown, thereby forming separate first and second combustion chambers; (f) said second cylinder possessing a multiplicity of openings about the equator of said second cylinder, thereby forming exhaust gas ports that are fully open when said second piston is in either said dead center position; (g) the reciprocation is driven by alternating deflagrations within said separate combustion chambers of said second cylinder; (h) said first cylinder joined and separated from said second cylinder by said first head, wherein said first head possesses a first gland to guide said first rod during said reciprocation; (i) said third cylinder joined and separated from said second cylinder by said second head, wherein said second head possesses a second gland to guide said second rod during said reciprocation; (j) said first and third cylinders and first and third pistons form first and second scavenging pumps, each possessing a rotary disc valve, and fresh air intake ducts, for phase controlled fresh air intake means; (k) means for removing the heat of compression of the compressed fresh air within said scavenging pumps; (l) phase controlled means for scavenging and releasing the spent exhaust gas from said combustion chambers into a toric exhaust gas header that surrounds said exhaust gas ports; (m) means to extract heat from said engine by utilizing the oil from the engine\s crankcase as the cooling medium; (n) means to convert said reciprocation into a rotary motion; (o) means to utilize said rotary motion to drive idler gears; and (p) means to lessen the crankcase pressure pulsations resulting from said reciprocation of said first and second scavenger pumps.