Kubota’s new engine D1105-K responded to diverse energy needs worldwide

Kubota's new engine D1105-K

With the development of the Kubota‘s new engine D1105-K,  the firm has responded to the diverse needs of construction and industrial equipment manufacturers worldwide. With these responses, the company has earned the trust of many equipment manufacturers and many users of diesel engines.

Kubota’s new engine D1105-K is based on the latest European, American, and Chinese emission regulations. Kubota developed the D1105-K engine as a power source and successor to the D902-K.

“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 tunes fuel injection to create better fuel efficiency than conventional mechanical engines, which reduces CO2 emissions and makes exhaust gas cleaner. For these reasons, Kubota strives to broaden its electronically-controlled small engine lineup.”

TVCR combustion system

The D1105-K engine is equipped with the TVCR combustion system. This combines Kubota’s original combustion system with a unique electronic control technology developed specifically for small engines. The Kubota TVCR combustion system realizes greater fuel efficiency. And it realizes a compact size that makes it easy to replace conventional Kubota engines. The D1105-K also utilizes a large oil pan, extending the period between essential regular oil changes up to 500 hours. All of this provides better serviceability to reduce the time required for engine maintenance.

Kubota’s new engine D1105-K complies with emission regulations and China’s national smoke regulations. The new TVCR combustion method reduces black smoke to an invisible level. Also, manufacturers can directly mount the ECU to the engine to reduce the burden on the machine design when swapping out the engine and reduce the development length.

Firstly the same specifications and dimensions in conventional mechanical engines and D1105-K help manufacturers to replace one for another easily. Secondly the ECU is mounted directly to the engine, which reduces the extra labor placed on the design of the main machine.

The Controller Area Network

Additionally, The Controller Area Network (CAN) allows microcontrollers and devices to communicate with one another without a host computer. Above all the CAN also enables the collection of the engine drive data necessary for telematics technology. This data improves drivability and operational efficiency.

Kubota will contribute to realizing a carbon-neutral society by bolstering its lineup of electronically-controlled large engines and electronically-controlled small diesel engines.

It can be of your interest: Energy Capital The Magazine, October edition.


Kubota Engine America (KEA) started as an engine division of Kubota Engine America (KEA) started as an engine division of Kubota Tractor Corporation in 1982. These two companies pioneered the compact, high-density diesel market as an alternative to small gasoline engines. The Engine Division was dedicated to the sales and reinforcement of technical support. Kubota is the world’s leading manufacturer of compact diesel and gasoline engines for industrial, agricultural, construction, and generator applications. Kubota prides itself on its track record for reliability and engineering that fulfills its “For Earth, For Life” philosophy. The company has built an extensive engine and generator distribution network. They offer support in North America, South America and the Caribbean.

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