新型2.8L直列4気筒ディーゼルエンジン(ESTEC GD)の開発

摘要

新型2.8L直列4気筒ESTEC1GDエンジンは，世界初TSWINピストンや低冷損燃焼，小型高効率ターボチャージャの採用など最新技術を惜しみなく投入することで，商用車用エンジンに重要な低中速トルクと燃費の大幅向上を実現し，世界トップレベルの最大熱効率44%を達成した.さらに，圧倒的に静かなディーゼル燃焼を実現し，トョタの次世代ディーゼルエンジンにふさわしい仕上がりにすることができた.%Toyota has pioneered many environment-friendly technologies, notably its hybrid vehicles. Accordingly, the new 2.8 L inline 4-cylinder ESTEC (Economy with Superior Thermal Efficient Combustion)1GD diesel engine is being introduced into diesel line-up as one of the attractive solutions for economy and reliability.1GD engine achieves significantly silent combustion which is far superior to the conventional diesel engines and top level performance in fuel consumption, power output and exhaust emissions. The purpose of this paper is to explain about new diesel engine and the main technologies.