Hot gas engine

US3942324A · kind A · utility

Assignee

• Forenade Fabriksverken

Inventors

• Lennart Johansson · Ann Arbor, US
• Ragnar Karl Olof Gronvall

Key dates

• Filing date: Jul 12, 1974
• Grant date: Mar 9, 1976
• Expiry date: Jul 12, 1994

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02C1/05
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A hot gas engine including an injector for introducing a mixture of air and fuel into the combustion chamber to heat the working medium which is circulated in a system of ducts. Fresh air for the combustion of the fuel is preheated in a heat exchanger by exhaust gases from the combustion chamber and conducted to the fuel injector. A heating system for passing a heat exchange fluid to a space to be heated surrounds the combustion chamber, and the heat exchange fluid is thus heated by heat exchange with the exhaust gases.