A six-stroke reciprocating engine that combines a four-stroke internal combustion cycle with a two-stroke Rankine cycle is presented. A heat regenerator extracts the residual energy of the combustion gases expelled during the exhaust stroke of the internal combustion cycle. The heat regenerator is located in an antechamber directly adjacent to the cylinder to minimize heat losses and maximize the temperature of the captured energy. During the Rankine cycle liquid is injected directly onto the heat regenerator where it vaporizes and superheats. A multi-link arrangement is incorporated into the engine's reciprocating mechanism to provide for dynamic clearance volume adjustment. This dynamic adjustment allows maximum expansion of the vapor during the Rankine cycle and provides the proper compression of the intake charge during the internal combustion cycle. Modeling of the engine performance predicts a thermal efficiency for the combined cycle of 56%.
A Dual Cycle Reciprocating Engine
Sae Technical Papers
Future Transportation Technology Conference & Exposition ; 2000
21.08.2000
Aufsatz (Konferenz)
Englisch
A dual cycle reciprocating engine
Kraftfahrwesen | 2000
|Thermodynamic design of a reciprocating Joule cycle engine
Online Contents | 2003
|