MAN Engines
MAN Engines debuts its straight-six 16.2 L engine, the D4276, with 142 mm bore and 170 mm stroke.
- Developed specially for applications that demand high power with full power operation at up to 70% of the duty cycle
- Delivers maximum torque of 3,280 Nm (2,419.2 ft.-lbs.) at speeds as low as 1,100 rpm, and maintains constant torque up to 1,500 rpm
- Offers high power-to-weight ratio
- Dry weight of 1,280 kg (2,822 lbs.)
- Delivers output between 450 and 515 kW (604 and 690 hp) depending on power stage
- Compact installation dimensions of 1,464 mm long x 978 mm wide x 1,131 mm high (57.6 x 38.5 x 44.5 in.)
- Fuel flow has been significantly improved by use of newly developed high-pressure pump
- Additional increase in flow rate through injectors, coupled with injection pressures of up to 2,500 bar (36,259.4 psi), ensure perfect combustion process to provide not only optimum torque curve, but also ideal degree of fuel atomization
- Lower fuel consumption over wide map range, coupled with reduction in particulate emissions
- Equipped with VTG (variable turbine geometry) turbocharger to help maintain maximum power and torque over wide engine speed range
- Top-down cooling, in which coolant is pumped downwards from top of engine and distributed longitudinally through upper cooling jacket of cylinder head
- Coolant flows on cylinder-specific route along injector jacket provide special protection to points subject to high thermal stress in cylinder head, such as injectors and valve seats to ensure consistently high rate of cooling along entire cylinder head
- Modifications have been made to crankcase and pistons to further improve cooling system
- Utilizes exhaust gas recirculation (EGR) system with water cooling
- Modular exhaust gas aftertreatment has been configured to suit requirements of engine and consists essentially of two DOC/DPF modules coupled with SCR system
- Meets most recent emission standards such as EU Stage V and U.S. Tier 4
- For countries with less stringent requirements, emissions downgrades to EU Stage IIIA/IIIB are available
- Compact and lightweight exhaust gas aftertreatment system offers manufacturer flexibility by allowing choice of where to install components
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