Skip to main content

Rehlko’s new KDI 1903TCR engine gives high power and torque densities in a compact package

April 10, 2025 Read time: 1 min
Rehlko’s new KDI 1903TCR engine: high power and torque densities in compact package

Rehlko’s new KDI 1903TCR engine packs a big punch in a compact package, delivering 50kW of power and 250Nm of torque with three cylinders.  

“Our  mantra is power density and torque density,” says Massimiliano Bonnani, general manager – product strategy at Rehlko.  

“We wanted to provide a three-cylinder engine capable of this level of power to meet the need of our customer to deliver more productivity within the same machine frame.”

The KDI range includes three-cylinder 1.9litre engines which deliver a power output of 42kW and 225Nm torque and four-cylinder 2.5litre engines which deliver 56kW and 315Nm torque. The KDI 1903TCR sits in between the two.

The new engine would be suited to a wide range of construction equipment such as small excavators, skid steers, telehandlers or pumps.  

“The high power and torque densities mean that the machine can do more work within the same time window, and with more efficient fuel consumption,” says Bonnani.

The KDI 1903 TCR incorporates Rehlko’s diesel particulate filter (DPF) technology, engineered to meet EU Stage V emission regulations.  

The DPF enables efficient automatic regeneration, even at low rpm, says Rehlko. The engine can also run on hydrotreated vegetable oil (HVO) if required to reduce emissions and its carbon footprint in operation.

For more information on companies in this article

Related Content

  • Cleaner power with updated engine designs
    June 13, 2012
    A combination of engine and driveline technologies will reduce fuel consumption and increase performance in new generation, low emission machines A wide array of new engine and driveline technologies being developed will help reduce emissions and fuel consumption, while increasing performance in the latest machines coming to market. With engine manufacturers focussing on the Tier 4 Interim/ Stage IIIB and following Tier 4 Final/Stage IV emissions requirements for North America and Europe, sophisticated
  • New innovations are being developed in diesel engines and drive technologies
    April 24, 2013
    Innovative new engine emissions control technology is coming to market - Mike Woof reports. The diesel engine sector has been one of the most active and innovative areas for technological development in the past 10 years. Engine firms have invested enormous sums in developing new, low emissions technologies that reduce the quantities of nitrous oxide and particulates from the tailpipe. All the firms have taken a different approach in this regard, using various combinations of the technologies available such
  • Emissions regulation leads to efficiency gains
    November 6, 2012
    Innovative technology is use is providing efficient, clean burning engines - Mike Woof reports The development of new diesel engine technology has, for the off-highway equipment sector, been the single most expensive research field for the industry since these machines first started being manufactured. Aimed at reducing the emissions of nitrous oxide as well as particulate matter, in a phased series of stages the engine emission improvements will make major changes to the construction sector. In real world
  • Driving advances in engines and drivelines
    February 27, 2019
    Technology advances for engine and driveline systems continue - Mike Woof writes With the Stage V emissions requirements being introduced in Europe, a number of engine manufacturers have already announced their plans. Leading engine makers such as Cummins, Deutz, John Deere, Perkins and Volvo Penta have all released information regarding the engines that they will be offering. The new standard introduces the particulate particle count (PN) and applies to all diesel engines above 19kW for off-road applic