TY - SER AU - Szybist, James P. AU - Nafziger, Eric AU - Weali, Adam TI - Load Expansion of Stoichiometric Hcci Using Spark Assist and Hydraulic Valve Actuation KW - Spark-Assist Homogeneous Charge Compression Ignition (Sa-Hcci) KW - Stoichiometric Combustion KW - Hydraulic Valve Actuation (Hva) ER -