D944 A7 Diesel engine

The Liebherr diesel engine D944 A7 with 4 cylinders in inline-arrangement and a displacement of 8 liters has a maximum power of 230kW at 1,900 revolutions. Dynamic forces in a 4-cylinder engine are compensated for by a balance shaft. Therefore, the 4-cylinder engines from Liebherr have much lower vibrations and much smoother operation than comparable 4-cylinder engines. The engine features for regulated and unregulated markets identical performances, the same requirements for the machine‘s cooling system, and the same interfaces when installed. This enables the customer to use the same device design for different emission standards.

Configuration In-line engine
Number of cylinders 4
Displacement 8.0 l
Power rating 230 kW
Max. torque 1,373 Nm
Emission standards EU Stage IV / EPA Tier 4f / EU Stage V / EPA Tier 0 (Fuel consumption optimised) / EU Stage IIIA / IMO III

Technical data

Configuration In-line engine
Number of cylinders 4
Flywheel housing SAE 1 / SAE 2
Bore 130 mm
Stroke 150 mm
Displacement 8.0 l
Power rating 230 kW
Rated speed 1,900 min-1
Max. torque 1,373 Nm
Dry weight 950 kg
Length 1,173 mm
Width 918 mm
Height 1,131 mm
Auxiliary outputs (PTO) 4
Emission standards EU Stage IV / EPA Tier 4f / EU Stage V / EPA Tier 0 (Fuel consumption optimised) / EU Stage IIIA / IMO III