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System Simulations to Evaluate the Potential Efficiency of Humid Air Motors

In English

Författare

Summary, in English

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.

Publiceringsår

2013

Språk

Engelska

Publikation/Tidskrift/Serie

SAE Technical Paper Series

Dokumenttyp

Konferensbidrag

Förlag

Society of Automotive Engineers

Ämne

  • Other Mechanical Engineering

Nyckelord

  • Internal Combustion Engines
  • Diesel Engines
  • Humid Air Motor

Conference name

SAE/KSAE , International Powertrains, Fuels & Lubricants Meeting, 2013

Conference date

2013-10-21 - 2013-10-23

Conference place

Soeul, Korea, Republic of

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0148-7191
  • 2013-01-2646