The New Toyota L-4 Direct-injection Diesel Engine – Toyota D-4D Clean Power Concept

Authors

M. Suzuki, N. Tsuzuki, Y. Teramachi, Toyota Motor Corporation, Aichi-ken, Japan

Year

2005

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 595

Summary

From the global environment point of view, both low exhaust emissions and CO2 emission are required. At the same time, a powerful engine is expected to deliver driving pleasure. In this background, Toyota has developed a new 2.2 litre common rail diesel engine in two variants: the 2AD-FTV and 2AD-FHV engine. The 2AD-FTV engine uses an aluminium cylinder block, a balance shaft, a roller rocker valve train and solenoid injectors. Maximum power has been increased and weight is reduced compared to the current engine. Additionally the 2AD-FHV engine is equipped with several advanced technologies like a lower compression ratio, a piezo-electric common rail system with high-pressure injection (180MPa), DPNR-technology, switchable EGR cooler etc. Due to these technologies, NOx and particle emissions are far under EURO 4 limit values, while at the same time maximum power and torque reach top class in the 1.9-2.2 litre displacement segment. Production and marketing of this Clean Power engine will start in 2005.

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