The New Toyota Inline 4 Cylinder 2.8L ESTEC GD Diesel Engine

Authors

N. Oikawa, Dr. T. Fukuma, Y. Hamamura,
T. Yamamoto, H. Kaneko, G. Kishimoto, T. Toda, Toyota Motor Corporation, Toyota, Japan

Year

2015

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 783

Summary

Toyota has pioneered many environment-friendly technologies, notably its hybrid vehicles. Accordingly, the new 2.8L l4 ESTEC (Economy with Superior Thermal Efficient Combustion) 1GD diesel engine is being introduced into Toyota’s diesel line-up as one of the attractive solutions for economy and reliability, especially in developing countries and for commercial vehicle markets. In order to improve the engine thermal efficiency, significant modifications are implemented on fundamental structures compared to the previous model (3.0L 1KD engine) such as intake and exhaust ports layout, the valve system component and the DPF catalyst arrangement. As a result of these modifications, a down-sized turbo charger can be used. Moreover, fuel consumption is improved by 15%. In addition, to meet Euro6 emission legislation, a urea SCR system is adopted (a Toyota first). As such, the exhaust system layouts were reduced to 3 types, decreased from 18 types in the previous model. This promotes engine installation flexibility for all the frame type vehicles.