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

  • Engine innovations will cut emissions and increase performance
    October 1, 2014
    A series of innovations in engine technology will cut emissions and deliver fuel savings for customers - Mike Woof writes The start of 2014 saw the commencement of the final phase of the current set of engine emissions requirements for Europe and North America. With the introduction of the first set of Tier 4 Final/ Stage IIV emissions regulations, new generation diesel engines used in construction will deliver cleaner operating performance than ever before. These highly efficient engines have been devel
  • Kohler developed new low emission diesel
    January 9, 2015
    Kohler is now extending its diesel range with the addition of the KDI 3404. This diesel is designed for outputs from 56-100kW and is a compact engine with a high power density and low fuel consumption. Produced in Reggio Emilia, the new KDI 3404 is available in two basic variants with four power configurations. The engine is available in a Tier 4 Final/Stage IV emissions compliant variant for sale in North America and Europe and benefits from advanced technologies such as a high pressure, common rail high f
  • Manufacturers launch new low emission engines at Conexpo 2014
    May 20, 2014
    A wide array of engine solutions was unveiled at Conexpo 2014, with major manufacturers developing new low emissions technologies Cummins Emissions Solutions introduced a range of EcoFit urea tanks and lines for those adopting SCR after-treatment systems. EcoFit includes four tank capacities – 19, 38, 57 and 114litres – including two different shape profiles for additional installation flexibility. A key component is the urea quality sensor – it detects and monitors the correct urea liquid composition, e
  • Perkins meets Stage V emissions requirements
    September 11, 2017
    Perkins is introducing a new range of diesels that meet the coming EU Stage V emissions requirements. These have been designed to meet the much tougher emission control requirements. In addition the firm is also introducing a new low cost engine monitoring package. There are 15 basic engine models in the line-up, with a huge range of variants to suit a massive array of different applications and installation requirements.