Rendering courtesy Liebherr

Liebherr plans to use a new building to produce common-rail fuel systems for its line of diesel engines.

Construction equipment maker Liebherr Group plans to invest $225 million over the next six years and add nearly 248,000 square feet to expand production of clean-diesel engines at its production subsidiary in Bulle, Switzerland.

Demand for clean-diesel engine technology worldwide is fueling the need for companies like Liebherr to streamline and expand production of mobile power plants. The Bulle expansion includes a nearly 97,000-sq-ft standalone assembly plant for common-rail fuel-injection systems, set to open in 2016, and more than 150,000 sq ft of testing bays added onto existing plant space.

The new building, Liebherr says, would allow it to produce more than 100,000 units per year to supply its lineup of new machines as well as its spare parts business.

The engine subsidiary, Liebherr Machines Bulle S.A., opened in 1978 and currently has 581,000 sq ft of factory space on 29 acres of land.