A new series of 6 cylinder direct injection 8.4 liter diesel engines have been designed by Isuzu Motors Limited. Naturally aspirated, turbocharged and turbocharged-aftercooled versions, have been developed to meet the needs of 8 to 16 ton GVW commercial vehicles, as well as industrial and marine applications. These engines cover the range of 147 - 200 kw (195 - 270HP) output.
The design objectives for these engines included such features as high output, better fuel economy, high reliability and durability, as well as minimum weight and cost.
This paper deals with the design, development and performance aspects of these engines.