Planet Public Library

Opposed Piston EngineHistorically, the opposed-piston engine set combined records for fuel efficiency and energy density that have however to be met by any other engine form. Then, the port is closed by the skirt of piston 44 as the crankshaft moves 270 degrees to best dead center and thence, therepast 90 degrees. An opoc® engine has no cylinder heads, valvetrain components, or other mechanicals connected with standard engines. FIGURE 1 is a side elevational view of a single cylinder opposed piston engine constructed according to the principles of the invention and arranged for operation with steam or compressed air.

The exhaust port 46, positioned near the base of the cylinder, is commonly closed by the elongated skirt of the piston 43 and opens by movement of the face of the piston therepast as the main crankshaft moves to bottom dead center and once more closes as the crankshaft moves past bottom dead center. Other benefits of modularity contain optimized engine performance, decreased emissions, and an extended solution line. FIGURE 18 is a sectional plan view of a single cylinder, two cycle, opposed-piston engine comparable to the view shown at FIG.

This P-MCM enables the piston (Initial DYNAMIC – MOVING – Pressure PORT,) to simply absorb this function stress of heat in gases, turning the Gases function (Stress) into anxiety on the piston crown, that pushes across piston to the connecting rod, to the crank shaft, converting Heat-stress into torque. This, or any other suitable shifting arrangement, can be advantageously utilized to vary the compression ratio of the engine as will be hereinafter described. FIGURES 26 by means of 29 are little-scale diagrammatic sketches of the engine shown at FIG. As a result, the engine is considerably much less complex – there are far fewer moving components.

This layout provides superior scavenging, as gas flow through the cylinder is axial rather than radial, and simplifies design of the piston crowns. On the other hand, even though the furthestapart position of the pistons is roughly 45 degrees past bottom dead center of the secondary piston and 45 degrees just before bottom dead center of the main piston, it is to be noted that the distance involving the pistons does not drastically reduce till the key piston is at bottom dead center, indicated BDC. FIGURES six by means of 9 are little-scale diagrammatic sketches of the engine shown at FIGS.

Applied Thermal Sciences these guys have the strongest opposing pistons in on cylinder ( theoretical) engine architecture with out any improvements. Thermal energy efficiency is measured in how much of the thermal energy is transferred into motion. The extent of such compression will not be important in the course of this return cycle and as quickly as the secondary piston moves 90 degrees past best dead center, the function cycle recommences. This engine is illustrated and herein described as a single cylinder, vertical-shaft unit because a showing of a multi-cylinder unit would be an unnecessary duplication of components.