System Simulations to Evaluate the Potential Efficiency of Humid Air Motors

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

In the quest for efficiency improvement in heavy duty truck engines, waste heat recovery could play a valuable role. The evaporative cycle is a waste heat recovery technology aimed at improving efficiency and decreasing emissions. A humid air motor (HAM) uses the waste heat from the exhaust of the engine to humidify the inlet air; this humid air, with higher specific heat, reduces NOx emission to a greater extent [1] [2]. Despite this benefit of emission reduction, the increase or decrease in efficiency of the humid air motor compared to the conventional engine is not discussed in the literature [3] [4] [5]. In this paper, an attempt is made to study the efficiency of the HAM using system model simulations of a 13-liter heavy duty Volvo engine with a humidifier. The commercial software GT-SUITE is used to build the system model and to perform the simulations. The efficiency improvement of the HAM comes from the expansion of the vapor mass flow produced as a result of humidification. An effort is also made to understand the relationship between the humidified engine and its efficiency.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Mechanical Engineering

Keywords

  • Internal Combustion Engines, Diesel Engines, Humid Air Motor
Original languageEnglish
Title of host publicationSAE Technical Paper Series
PublisherSociety of Automotive Engineers
Publication statusPublished - 2013
Publication categoryResearch
Peer-reviewedYes
EventSAE/KSAE , International Powertrains, Fuels & Lubricants Meeting, 2013 - Soeul, Korea, Republic of
Duration: 2013 Oct 212013 Oct 23

Publication series

Name
ISSN (Print)0148-7191

Conference

ConferenceSAE/KSAE , International Powertrains, Fuels & Lubricants Meeting, 2013
CountryKorea, Republic of
CitySoeul
Period2013/10/212013/10/23