D9612 Diesel engine | Liebherr

D9612

Power generation

Highlights

Designed and manufactured by Liebherr, the D9612 is a highperformance combustion engine engineered for missioncritical power generation applications, particularly wellsuited for PRP and COP operations, while also supporting standby power requirements in stationary and mobile installations, including data centers. Built on a robust platform and backed by Liebherr’s proven engineering expertise, this 12 cylinder, 27 litre engine delivers up to 1,100 kW, providing stable and predictable performance across PRP and COP duty cycles under demanding operating conditions. Combining reliable efficiency with optimised fuel consumption and controlled emissions performance, the D9612 is designed to deliver dependable and costeffective power generation for missioncritical applications. Rapid load acceptance and controlled transient response secure compliance with ISO 85285 and NFPA 110 requirements, while extended service intervals, simplified maintenance and advanced diagnostics with LiDIA maximise reliability, minimise downtime and protect longterm asset value.

Configuration - V-engine
V-engine
Number of cylinders - 12
12
Displacement - 27.0 l
27.0 l
Rated power - 742 - 1,114 kW
742 - 1,114 kW
Application - Powergen
Powergen

Product advantages

Enabling missioncritical genset solutions with controlled and predictable power behaviour across a wide range of operating profiles.

Facilitating system integration with a favourable powertoweight ratio (kW/kg) and an engine footprint optimised for demanding stationary and mobile genset configurations.

Securing compliant and predictable operation with rapid load acceptance and controlled transient response in line with ISO 85285 and NFPA 110 requirements.

Enhancing system reliability and availability through stable dynamic behaviour under demanding load profiles and controlled operation across PRP and COP duty cycles.

Maximising longterm asset value with extended service intervals, simplified maintenance concepts and advanced diagnostics supporting reduced downtime.

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Technical data

Application	Powergen
Engine type	Diesel engines
Configuration	V-engine
Number of cylinders	12
Bore	135 mm
Stroke	157 mm
Displacement	27.0 l
Rated power	742 - 1,114 kW

Downloads

PDF (1.2 MB)

Options available for the engine

Filtration and fluids

Coolant inlet & outlet (90° elbow)

Cooling and air systems

Top air inlet elbows
Exhaust outlet elbow
Cold start (-25°)
Fan drive + fan

Sensors and diagnostics

Oil level sensor
LiDIA engine diagnostic solution

Electrical and structural components

Redundancy starter
Closed CCV

Product specifications

Liebherr Engine Control Unit
Liebherr high-performance injection system (2000 bar)
Hydrogenated vegetable oil (HVO)

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