When selecting a diesel engine, many people focus first on horsepower. However, horsepower tells only part of the story. For professional sewer cleaning machines, torque, load handling capability and operational reliability are equally important factors in real world performance. That is why Rioned uses the Kubota D1105 in a range of machines.

More Displacement, More Power

The Kubota D1105 has a displacement of 1.1 litres, making it larger than the Kubota D902, which has a displacement of 0.9 litres. Thanks to this larger displacement, the D1105 delivers 27% more torque. This additional torque enables the machine to maintain powerful and stable performance, even during demanding cleaning operations.

The Same Power at Lower Engine Speeds

One of the key advantages of the D1105 is its ability to deliver the same maximum power at lower engine speeds. This provides several benefits:

• Smoother engine operation
• Reduced mechanical stress
• Lower component wear
• More efficient use of available engine capacity
• Increased reliability during extended operating periods

Extra Reserve Capacity Under Variable Load

In van mounted and built in sewer cleaning machines, pump load constantly changes. Under these conditions, it is important that the engine has sufficient reserve capacity to absorb peak loads. The Kubota D1105 provides this additional reserve capacity. As a result, the machine continues to perform consistently, even when operating conditions become more demanding. For professional users, this translates into greater continuity and a reduced risk of power loss during operation.

When Is the D902 the Right Choice?

This does not mean the D902 is not a capable engine. When compact dimensions, low weight and limited installation space are the highest priorities, the D902 remains an excellent option.
However, for applications where maximum reliability under heavy load is essential, the D1105 offers clear advantages. 

The difference between the Kubota D1105 and the D902 is not only about power output, but also about how that power is delivered. With more torque, greater load reserve and the same power at lower engine speeds, the D1105 provides added confidence for professionals who rely on their machines every day. In short: when the work gets tougher, the D1105 has more power in reserve to keep going.