Waste heat recovery technologies in turbocharged automotive engine? A review

Significant waste heat recovery technologies have been developed to recover exhaust heat and turn it into useful energy such as in downsizing the engine or to regain the auto-electricity. Extensive work and research in energy recovery have been identified in the automotive sector; therefore the main objective of this paper is to assess each waste heat recovery technology based on current developments, research trends and its future in an automotive application. The study looked into potential energy recoveries, performances of each technology and other factors affecting the implementation. As a result, the article drew the conclusion that waste heat recovery and its utilization will remain a good prospect in future automotive engine application