Case

New outboard diesel engine reduces both emissions and cost.

In 2020, OXE Marine launched the OXE300, the world’s most powerful outboard diesel engine for commercial users.

Image of a motorboat driving close to the shore

ClientOXE Marine

IndustryIndustry

ServicesHardware DevelopmentDesign & ExperienceEmbedded & Electronics Development

This project case was carried out by Semcon, before Semcon and Knightec joined forces 2024, forming Knightec Group.

Background

Collaborating with OXE Marine, Semcon played an active role in the development of the outboard’s mechanical components.

The OXE300 is an outboard engine for commercial use, with a lifespan 20 times that of the other outboards on the market today.

Challenge

The OXE300 is designed to be used in environments where strength, power, low fuel consumption and long range are crucial. At the same time, it also needed to be a safe and reliable product for all maritime operators who come in contact with it.

The most fuel-efficient outboard diesel engine.

The result was the most fuel-efficient 300-horsepower outboard diesel engine on the market. If you look at life-cycle cost for operation in Europe, the engine reaches the zero point between cost and operating time at 500 hours. And at 4000 hours, the cost savings reach SEK 3 million. The OXE300 increases range by almost 80% – and with the outboard engine’s easily accessible service points, it’s easy for the operator to service it right from the boat.

End-to-end development partner

The OXE300 is based on the BMWB57 diesel engine. It was marinised so that it could be used in professional, maritime environments with water cooling instead of air cooling. This was accomplished, among other things, through the development of a water-cooled exhaust manifold, which reduces surface temperature. The transmission was also adapted to enable increased torque and a high gear ratio. These are just some of the components developed specifically for OXE Marine’s outboard engine.

The collaboration with OXE Marine is one of many examples of Semcon’s extensive multidisciplinary expertise coming together to offer complete product development. And a large number of skills were involved. Initially, the assignment was focused on the development of mechanical components for the new outboard engine. But the project quickly grew to include expertise from Semcon in product information, product development and design.