System Design for a Direct-Boost Turbocharged SI Engine Using a Camshaft Driven Valve
作者单位：Institute for Dynamic Systems and ControlETH ZrichZurichSwitzerland
会议名称：《FISITA 2012 World Automotive Congress--Volume 3:Future Automotive Powertrains》
会议日期：2012年
学科分类：080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理]
关 键 词：Downsizing Turbocharging Turbo lag-Driveability Direct-boost
摘 要：Downsizing and turbocharging for retaining the maximal power is a common approach to improve the fuel economy of SI internal combustion *** to the additional turbocharger dynamics,small engines suffer from a significant time lag of the torque *** injection of pressurized air into the combustion chamber during the compression phase,also called direct-boost,can recover the *** far,expensive and complex fully variable valve-trains have been proposed for the air exchange between the air tank and the combustion *** this paper,a direct-boost system using a camshaft driven valve is *** appropriate control strategy is *** transient performance of the complete system and the feasibility of the control strategy are demonstrated on a modified0.75 1 turbocharged two-cylinder test bench engine.