A Twice-Open Control Method for a Hydraulic Variable Valve System in a Diesel Engine
Degaoxuan Guo,
Juan Tang,
Zongfa Xie
et al.
Abstract:In order to solve the cold-starting problem and improve the intake and exhaust pipe temperatures of diesel engines under cold-starting and low- and medium-speed conditions, this paper proposes a twice-open control method for a hydraulic variable valve system. First, a hydraulic variable valve system that can realize a fully variable valve lift and phase angle is applied to replace the original intake system in order to meet the air intake requirements of different conditions. Then, a twice-open control method … Show more
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