- Posted August 7, 2013 by
Juab County Fair
The Reciprocating Spring Cell Engine is an alternative energy engine concept.
Concept and Theory;
The Engine resembles Internal Combustion Reciprocating Piston Engines but it uses a "spring cell" in place of the piston. The connecting rod, crankshaft, timing gears, camshaft, push rod and rocker arm all serve the same functions as in a gasoline or diesel powered internal combustion reciprocating piston engine. The basic principals of the 2 different engines type are the same. The internal combustion reciprocating piston engine uses compressed air and fuel mixture which acts as a spring. When the air/fuel mixture is ignited after top dead center, the tension of the compressed air/fuel "spring" is increased, driving the piston, via connecting rod, against the crankshaft, producing power. The Reciprocating Spring Cell Engine works the same way but uses a physical spring. The tension of the spring must be enough to overcome mechanical resistance and the weight of rotating mass.
One of the big differences between the different engine types is that the spring cell follows the crankshaft down the cylinder which means that the camshaft lobe must match the crankshaft stroke which in turn means a gargantuan camshaft. There are possible alternative design concepts that would theoretically make it possible to achieve a working model with a smaller camshaft, such as unequal length rocker arms (i.e. 1.5:1 ratio common in gasoline engines), compound rocker arms, or a rocker arm relay or a combination of these concepts.
The prototype 3b RSC engine is a simplex design which uses a 1:1 rocker arm ratio.
Throttle control is achieved by mounting the rocker arm on an elevator shaft which moves up and down. Downward movement increases tension on the spring and the degrees of rotation during which the spring is under tension and producing power. Downward movement increases tension, power and rpm, upward movement decreases power and rpm and ultimately stops the engine.
The project goals are to accomplish a working model based on the simplex design, then pursue refinements and improvements including the alternate design concepts.