Patent ID: 9217388
Filing Date: 2015-12-22
Classification: F01K,F02D,F02G,Y02T

Abstract:
1. A power unit, comprising: an internal combustion engine having one or more pistons each correspondingly reciprocally engaged in one or more cylinders in which an air-fuel mixture combusts to generate rotation of an internal combustion engine crankshaft and which generates a combustion gas exhausted through an exhaust system; a Stirling engine having a heat transfer element coupled to said exhaust system to transfer heat from said combustion gas to said Stirling engine to generate rotation of a Stirling engine crankshaft; a power transmission system which couples an operational speed of said internal combustion engine crankshaft to an operational speed of said Stirling engine crankshaft; and an exhaust brake coupled to said exhaust system through which said combustion gas flows, said exhaust brake operable to control an amount of back pressure in said one or more cylinders to control said operational speed of said Stirling engine.