Kubota Adds Carbon-Neutral Lineup With D110-K

Kubota has developed the D1105-K to meet updated emissions regulation requirements.

Kubota D1105 K Engine
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Kubota has developed the D1105-K to meet updated emissions regulation requirements. 

Building off the D902-K, Kubota developed the D1105-K engine as a power source complying with the latest European, American and Chinese emission regulations.

“Stricter emission regulations not only in Europe but the rest of the world are currently driving decarbonization demand,” said Tomokazu Matsushita, president of Kubota Engine America. “The electronic control of Kubota engines finely tune fuel injection to create better fuel efficiency than conventional mechanical engines, which reduces CO2 emissions and make exhaust gas cleaner. For these reasons, Kubota strives to broaden its electronically-controlled small engine lineup.”

Features of the D110-K lineup include:

  • A TVCR combustion system, which combines Kubota’s original combustion system with a unique electronic control technology developed specifically for small engines. The engine adopts the unique Kubota TVCR combustion system to realize both greater fuel efficiency and a compact size that makes it easy to use as a replacement to conventional Kubota engines.
  • A large oil pan, extending the period between essential regular oil changes up to 500 hours dependent on operating conditions. Overall, this provides better serviceability to reduce the time required for engine maintenance.
  • An 18.5kW (24.8HP) rated output.
  • 3000 rpm.
  • Three cylinders and a 1.123L displacement.

In addition to complying with emission regulations worldwide, the D1105-K complies with China's national smoke regulations, Category Ⅲ. The new TVCR combustion method reduces black smoke to an invisible level. Moreover, manufacturers can directly mount the ECU to the engine to reduce the burden on the machine design when swapping out the engine, which is expected to reduce the length of development.

Manufacturers can easily replace conventional mechanical engines with the D1105-K because specifications, such as the exterior dimensions as well as the position of the intake and exhaust and power takeoff, stay the same. It can also reduce the extra labor placed on the design of the main machine generally necessary to install an engine with an electronic control unit, such as designing the installation position and harnesses, because the ECU is mounted directly to the engine.

Additionally, The Controller Area Network (CAN) allows microcontrollers and devices to communicate with one another without a host computer. The electronic control enables use of the CAN communication protocol, which can control engine rotation and torque through signals sent from the vehicles. The CAN also enables the collection of the engine drive data necessary for telematics technology. This data improves drivability and operational efficiency by aggregating the torque characteristics that mechanical control cannot realize to reduce rotation speed under sudden load.

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