The two ranges include a six-cylinder 15.26 litre engine offering outputs from 415-485kW and a larger 24.24 litre V12 engine with power outputs from 588-816kW. Both meet Tier 4 Final/EU Stage IV emissions and are also said to be EU Stage V ready.
The six-cylinder engine, badged D3876 LE12x, uses variable geometry turbocharging and a 2,500 bar fuel injection pressure to manage efficient fuel consumption. It also lowers emissions without compromising on performance, said Jurgen Haberland, MAN’s head of off-road engines.
Characteristics of the D3876 LE12x include a broad torque range from 1050 to 1450 engine rpm with maximum torque of 2700 to 3000 Nm. It uses a combination of cooled EGR and diesel exhaust fluid for its SCR exhaust after-treatment package to meet current emissions legislation. To meet more stringent EU Stage V regulations, which come into effect in 2019, a diesel particulate filter (DPF) will need to be added.
MAN’s larger V12 power unit meets current emissions regulations using diesel exhaust fluid and a dual SCR package – one for each bank of cylinders.
Getting the V12 engine to meet EU Stage V is said to require the addition of a diesel particulate filter (DPF) and changes to the engine control unit. With the SCR package being modular in construction, MAN’s emissions solution simplifies engine installation for OEMs, while the lack of cooled EGR avoids having to make additional cooling pack changes.
