Decelerating catalyst aging of natural gas engines using organic Rankine cycle under road conditions.

ABSTRACT: High exhaust temperature is an intrinsic nature of natural gas engines which underlies power de-rating and thermal aging of after-treatment system; therefore, this study integrates an organic Rankine cycle (ORC) system between engine and it's three-way catalyst (TWC) to address these challenges. ORC facilitates power output enhancement through exhaust energy recovery and alleviates thermal aging by reducing exhaust temperature. To estimate the effectiveness of this hypothesized system, a simulation-based investigation is performed. First, simulation models, including engine, TWC, and vehicle dynamic models, are built and validated by experimental data. According to the temperature characteristics of different TWCs, three scenarios, representing old, current, and prospective TWC technology,

SUBMITTER: Wang C 

PROVIDER: S-EPMC11238045 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature