Small engine Landscape

Kubota engineers developed new small-displacement engines that adopt a common-rail system while optimizing the combustion system and injection characteristics.

Small industrial diesel engines are required to be highly flexible for installation in various applications. Therefore, even in the same engine, it is necessary to have many engine settings of rated power/rated speed and torque backup. To achieve these features, an inline injection pump (PFR injection pump) is often adopted for engines that have a mechanical fuel-injection system.

However, to meet drastic engine performance improvements and the conversion to electronic devices, maintaining such an injection system is not pragmatic due to the restriction of allowable pressure on PFR injection pumps for high pressurized injection and the difficulty with fine electronic control. Therefore, engineers at Kubota developed a new engine series with common-rail system to keep up with the recent market trends.