A Dual Cycle Reciprocating Engine

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%.

• Record URL:
  • https://doi.org/10.4271/2000-01-3070
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Prater, David M
• Publication Date: 1998-2-23

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Combustion; Engine cylinders; Gases; Simulation; Two stroke cycle engines
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01796572
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2000-01-3070
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:18AM