MAN Energy Solutions has launched a new series of turbochargers that have been optimised for engines working to IMO Tier III NOx emission limits.

The TCT series can be used on medium-speed and low-speed engines burning either conventional fuel or gas, with a power output from 6MW to 24MW. The series will eventually replace MAN’s established TCA turbochargers, which were introduced 15 years ago.

MAN Energy Solutions vice president and head of turbocharger sales Ralph Klaunig said: “The TCT series is a combination of new and proven design features specifically optimised for IMO Tier III engines. We’ve targeted a smaller, lighter design with a superior charging efficiency and a high air-pressure.”

The new designs are smaller and more efficient than the current turbochargers, with MAN claiming efficiency of up to 80%. Manufacturing and operating costs have also been reduced.

The TCT40 and TCT40, for engines with a supercharged power output of 9.46MW and 15.2MW respectively, are already available. MAN has sold TCT40 turbochargers to two customers and the model is undergoing its first field test. The TCT60 will be delivered in mid-2020. Other sizes will be added in 2020 and 2021.

The company reported that it has already signed agreements with customers to supply TCT turbochargers for two-stage turbocharging on four-stroke engines.

At the series’ launch in Piraeus, guests watched Mr Klaunig and MAN vice president and head of after sales Alexander Schäfer disassemble a TCT40 turbocharger to demonstrate its simplified, service-friendly design.

Is the MAN TCT turbocharger worthy of a Marine Propulsion Award? Make your nominations before 11 March.