Waste heat recovery technologies in modern internal combustion engines

Abstract

Waste heat recovery (WHR) technologies in internal combustion engines (ICEs) outline various methods to harness wasted energy for improved efficiency and reduced emissions. The discussion covers heat exchangers, turbo-compounding, bottoming cycles, thermoelectric generators (TEGs), thermochemical recuperation (TCR), thermoacoustic conversion, and absorption refrigeration. Each technology's principles, applications, benefits, and challenges are explored, highlighting advancements and innovations from industry leaders. The abstract underscores the ongoing efforts to maximize energy efficiency and minimize environmental impact in ICEs across diverse vehicle types and applications.