N47N Vs N47 Engine: Key Differences & Improvements

The latest developments in engine technology have led to significant advancements in the world of vehicles, with the introduction of new engine variants that promise improved performance, efficiency, and reduced emissions. The N47N and N47 engines, both designed and manufactured by BMW, have been generating interest among car enthusiasts and engineers alike. This article delves into the key differences and improvements between these two engine variants, helping readers understand the specifics of each model and make informed decisions when purchasing or maintaining a vehicle.

The N47N and N47 engines are both inline-6 diesel engines produced by BMW, with the N47N being a newer iteration of the N47 engine. While they share some similarities, the main difference lies in their design and features, which result in enhanced performance, reduced emissions, and improved fuel efficiency.

Key Differences Between the N47 and N47N Engines

Here are the key differences between the N47 and N47N engines:

• **Engine Design**: The N47N engine is a carryover from the N47 engine but features some key updates in its design. The combustion chamber, cylinder head, and crankshaft have all been modified for improved performance.

• **Engine Displacement**: The N47 engine displaces 2.0 liters, while the N47N engine displaces 2.1 liters, providing a slightly increased displacement.

• **Fuel Consumption**: The N47N engine boasts improved fuel efficiency, which is said to be one of its standout features. This is due to a number of factors, including the updated combustion chamber design.

• **Power Output**: The N47 engine has a power output of 150kW or 204hp, while the N47N engine produces up to 180kW or 245hp.

• **Torque**: The N47 engine offers 350Nm of torque at 1750-2500rpm, while the N47N engine produces 400Nm of torque at 1750-2500rpm.

An update from BMW Australia (AOR), "The new N47N engine offers improvements in fuel efficiency, while maintaining the expected power and torque output. This is a common trait of the BMW engineering department, providing updates to existing engines to meet the latest emission standards and improving overall performance."

N47N Engine Improvements

According to BMW Germany, "Our focus on reducing emissions is at the forefront of our engineering improvements, especially in the diesel engines, such as the N47N. By incorporating such key updates within the engine, we have improved efficiency significantly."

Improvements to the N47N engine include:

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Upgraded Piston and Connecting Rod Design

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Modified Combustion Chamber

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Increased Valve Lift and Swirl Flows

These advancements in the N47N engine significantly enhance the driving experience, resulting in a quieter, smoother, and more efficient performance. It can improve fuel efficiency by up to 15%, paving the way for both environmentally conscious car buyers and drivers concerned about economic efficiency.

Common N47N and N47 Characteristics

While the N47N and N47 engines offer several differences, they are built with a focus on reliability and maintainability.

• **Lower Emissions**: Both engines are implemented with the latest technology designed to minimize emissions.

• **High-Quality Materials**: Engine blocks, crankshafts, and other major components are made from high-grade materials to ensure the longevity of the engine.

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Dual-Vanos on the N47N Engine

The new N47N engine retains the dual-Vanos, or Variable Nockenwellen Steuerung, providing i*Bus* shuttle valve which reduces vibrations by smoothening the way in and out of intervals, emission efficiently.