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 technology continues to advance, with lower emissions being one focus
    May 13, 2015
    Engine technology is advancing, with lower emissions, lower fuel consumption and longer service intervals being key developments - Mike Woof reviews some of the latest developments A huge investment in diesel engine technologies in recent years has seen manufacturers develop low emission diesels that are quieter, cleaner and use less fuel, while in many instances delivering more power. For machine manufacturers this has been a major benefit, allowing them to meet tougher regulations on noise and exhaust
  • Volvo Penta’s latest generation diesels meet low emissions targets
    March 7, 2018
    Volvo Penta has a full line-up of diesel engines for the 5, 8, 11, 13 and 16litre capacity range. These are available in low emissions, Stage V compliant variants. For the 5, 8 and 11 litre engines, particulate filters and SCR systems are used in the emissions control package to meet the stage V requirements. Meanwhile the 13 and 16litre engines feature an SCR system that is integrated with the particulate filter. Passive regeneration is used for the particulate filters, so there is no need to stop a machin
  • Key innovations in engines and drivelines technology at Conexpo 2014
    April 22, 2014
    Engines and drivelines technologies have move forward, as could be seen at Conexpo 2014 - Geoff Ascroft reports Solutions for Tier 4 Final emissions regulations dominated Conexpo 2014, with many firms showing off their options of DOC, DPF and SCR after-treatments. Deutz, while staying with an SCR-only solution, took a more unusual approach on its high horsepower V6 12litre and V8 16litre engines. Both get a dual SCR after treatment system to meet Tier 4 Final emission standards. Using a dual SCR system,
  • Engine firms delivering innovative solutions for reducing emissions and fuel consumption
    January 6, 2017
    Solutions for Tier 4 Final emissions regulations dominated Conexpo 2014, with many firms showing off their options of DOC, DPF and SCR after-treatments. Deutz, while staying with an SCR-only solution, took a more unusual approach on its high horsepower V6 12litre and V8 16litre engines. Both get a dual SCR after treatment system to meet Tier 4 Final emission standards.