터빈 휠 회전관성과 점화시기의 변화가 과급 직분식 전기점화 엔진의 과도운전응답성 및 연소특성에 미치는 영향

Abstract

Because of reduced displacement volume and inherent stoichiometric operation of downsized turbocharged gasoline direct injection engine. torque and power decrease and transient response delay problems have been pointed out. In this paper, effect of turbine wheel inertia and ignition timing on transient response and combustion were studied using 2.0 L downsized turbocharged GDI engine equipped with TiAl(Titanium Alluminide Alloy) and Inconel turbine wheel turbocharger.