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The OM471 engine is a remarkable inline - six - cylinder diesel engine with advanced technologies and excellent performance characteristics.
Development History
The OM471 engine has been on the market since 2011. Through continuous upgrades and optimizations, the third - generation product was launched in October 2022.
Technical Features
Optimized Combustion Efficiency: The geometry of the piston recess, the design of the fuel injector, and the cylinder - head parameters involved in gas exchange have been significantly optimized. The compression ratio is increased from 18.3:1 to 20.3:1, and the peak ignition pressure is raised to 250 bar. This enables higher combustion efficiency, allowing the fuel to burn more thoroughly and convert into stronger power output. It also contributes to better fuel economy.
Advanced Turbocharging Technology: The third - generation OM471 engine retains the asymmetric turbocharger of the second - generation and adds the TopTorque automatic torque - increasing system. When the vehicle demands it, this system can provide an additional 200 Nm of torque, further enhancing the engine's power performance. It performs better during uphill climbs and overtaking situations and also offers better fuel - saving benefits during normal driving on flat roads.
Reduction of Friction Loss: A brand - new engine oil pressure control valve has been developed to keep the oil pressure at an optimal level at all times. This system also monitors the status of all engine components and their specific requirements, such as lubrication or cooling. Under the premise of ensuring the safe operation of the engine, it effectively reduces friction loss and further improves fuel efficiency.
Optimized Exhaust After - treatment System: To adapt to the new combustion and control systems of the OM471, the exhaust after - treatment system has been comprehensively renovated. By limiting the negative pressure of the engine and improving the uniformity index of AdBlue urea injection, the conversion rate of nitrogen oxides is increased and urea consumption is reduced. At the same time, through the nitrogen oxides sensor, adaptive nitrogen - oxide closed - loop control, and predictive SCR temperature model, the emission stability is precisely controlled, making it possible to further reduce emissions and making the engine more environmentally friendly.
Performance Parameters
Taking the OM471 engine equipped in domestic Mercedes - Benz Actros as an example, its displacement is 12.8L, the maximum output power can reach 390kW (530 horsepower), and the maximum torque is 2600N·m.
Application Models
It is mainly used in high - end truck models such as the Mercedes - Benz Actros, providing strong power and reliable performance for vehicles. It can meet the needs of different working conditions such as long - distance transportation and heavy - load transportation, effectively improving transportation efficiency and economic benefits.
| BZ471 |
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