Right from its introduction to the market, the new KDI range of engines from KOHLER has became a technological standard of reference within the 30kW to 100kW power range showcasing its ability to offer a clear, effective, and functional response to a demand that is increasingly oriented towards compact engines. Thanks to the high power density, low fuel consumption and smooth yet uniform delivery of power throughout the RPM range, KDI engines ensure maximum productivity and offer an approach to limiting emissions that is effective yet easy to manage from the technical standpoint whilst requiring limited maintenance.
Available in a number of different models and power ratings, compliant with the Tier 4 Final – Stage IV standards (56-100 kW power output range), packed with cutting edge technologies and power delivery equivalent to that of larger displacement engines (100 kW @ 2200 rpm and 500 Nm @ 1400 rpm), the KDI range offers excellent performance features that translate into concrete operational benefits for end users.
KDI range are based on the use of high-pressure common rail injection system (2000 bar) of the latest generation combined with G3S solenoid-type injectors aimed at precise fuel metering during the injection process. An electronically controlled EGR valve is included for recirculating the right amount of exhaust gasses that are liquid-cooled by a water/air heat exchanger. The EGR system consists of two cooling stages that make it possible to optimise heat exchange without increasing external dimensions. In addition, the system is installed on the hot side, which prevents the EGR valve from seizing, therefore guaranteeing the maximum reliability. The valve train incorporates an architecture with four valves per cylinder, designed to house the injector in a perfectly vertical position and in the very centre of the combustion chamber. In this way, the cylinder is filled with the exact amount of fuel which is atomised and mixed with air in the best way possible.
The construction solutions devised by KOHLER Engines have made it possible to lower the fuel consumption of KDI engines by more than 10% compared to other engines within the same category. In addition, with their high torque output idle at (412 Nm @ 1000 rpm) and excellent specific performance (torque and power), KDI engines maximise the productivity of the machines they power and instantly respond to load even at low rpms. With these superior characteristics and perfect integration of the turbocharger and its electronic control system, KDI engines reach a level that is nothing short of exceptional. Also worth mentioning is the narrow profile that minimises the steering radius for better handling, a feature that is particularly useful in agricultural applications.
Their compact size, as an example, facilitates the installation process and provides excellent versatility in application also thanks to the four power take-offs with two additional PTOs at each side (SAE A and SAE B) that supplement the main and secondary PTOs, designed and positioned to draw the greatest amount of power from the engine.
the KDI range are based on excellent power density (30 kW/l) and torque output up to 500 Nm at 1400 RPM with torque density equivalent to 149 Nm/l, which translates into an excellent transient response, high power availability at low engine speeds, and an increase of up to 15% in machine productivity.
Added to this are low operating costs and easy maintenance at intervals of 500 hours thanks to the clean combustion that does not require a DPF. The absence of the DPF means that less space is required in any application and that productivity is enhanced as operation never has to be interrupted to regenerate the filter. What’s more, no costly thermal protection is necessary for preventing excessive heat loss and the consequent risk of fire. The result is that the machines are compact and easy to handle and the operator enjoys better visibility, which enhances safety and improves productivity.
Driving is exceptionally comfortable, guaranteed by minimum levels of noise and vibration thanks to the use of bedplate architecture (crankcase + bedplate) for the engine block, and the (optional) counter-rotating shafts it contains.
