Homogeneous charge compression ignition (HCCI) is a novel combustion strategy for IC engines that exhibits dramatic decreases in fuel consumption and exhaust emissions. Originally conceived in 1979, the HCCI methodology has been revisited several times by industry but has yet to be implemented because the process is difficult to control. To help address… (More)
With stated benefits ranging from increased thermal efficiency to significantly reduced NO x emissions, Homogeneous Charge Compression Ignition (HCCI) represents a promising combustion strategy for future engines. When achieved by rein-ducting exhaust gas with a variable valve actuation (VVA) system , however, HCCI possesses nonlinear cycle-to-cycle… (More)
— Homogeneous Charge Compression Ignition (HCCI) represents a promising combustion strategy for future engines. However, HCCI lacks an easily identified combustion trigger and, when achieved via variable valve actuation (VVA), includes cycle-to-cycle coupling through the exhaust gas. This makes controlling the process decidedly non-trivial. To address these… (More)
Ding, Chuan, "Thermal efficiency and emission analysis of advanced thermodynamic strategies in a multi-cylinder diesel engine utilizing valve-train flexibility" (2014). Open Access Dissertations. Paper 257.
and Nielsen D (2015) Impact of cylinder deactivation on active diesel particulate filter regeneration at highway cruise conditions. Heavy-duty over-the-road trucks require periodic active diesel particulate filter regen-eration to clean the filter of stored particulate matter. These events require sustained temperatures between 500 and 600°C to complete the… (More)
This is to certify that the thesis/dissertation prepared By Entitled For the degree of Is approved by the final examining committee: Chair To the best of my knowledge and as understood by the student in the Research Integrity and Copyright Disclaimer (Graduate School Form 20), this thesis/dissertation adheres to the provisions of Purdue University's "… (More)