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The BMW B58TU2 represents a further refinement of the already updated B58TU (Technical Update 1) engine, providing additional enhancements for performance, efficiency, and compliance with stricter emissions standards. Here are the key technical differences and updates in the B58TU2 compared to the original B58 and even the B58TU1:
B58/B58TU1: The original B58 and its first technical update feature a high-precision direct injection system that operates at up to 200 bar and 350 bar respectively, which allows for more efficient fuel combustion.
B58TU2: Enhances this system further, maintaining the increased pressure capacity up to 350 bar but incorporating more refined control over fuel injection for better atomization and combustion efficiency, particularly at higher RPMs.
B58/B58TU1: Both the B58 and B58TU1 use a twin-scroll turbocharger designed for quick spooling and reduced lag.
B58TU2: The latest update features an even more advanced turbocharger with a redesigned turbine and compressor geometry. It possibly includes an electrically assisted compressor to further reduce turbo lag and enhance throttle response.
B58/B58TU1: Features advanced thermal management with split cooling circuits for the engine block and cylinder head to optimize engine temperature.
B58TU2: Introduces additional refinements in the cooling system, such as an updated heat management module that better controls engine temperature under different driving conditions, improving performance and longevity.
B58/B58TU1: Both engines include particulate filters and advanced catalytic converters to meet emissions standards.
B58TU2: Adds more sophisticated exhaust gas after-treatment technologies, including improved placement and efficiency of catalytic converters and particulate filters, to comply with the latest Euro 6d emissions standards.
B58/B58TU1: Both iterations use BMW’s VANOS and Valvetronic systems to optimize valve timing and lift.
B58TU2: Features a revised cylinder head design with potentially different valve angles or profiles to increase airflow and combustion efficiency, coupled with further refined VANOS and Valvetronic systems.
B58/B58TU1: Initially offered in configurations up to around 335 horsepower, and with the B58TU1, certain applications could reach 382 horsepower.
B58TU2: Depending on the model and tuning, this latest version can support even higher power outputs due to its enhanced components and tuning adjustments. It also focuses on improving fuel efficiency and reducing carbon emissions under real-world driving conditions.
B58TU2: While not specific to every B58TU2 model, BMW has prepared this iteration to be more compatible with mild-hybrid systems, incorporating features that can seamlessly integrate with 48-volt electrical systems for improved overall vehicle efficiency.
The B58TU2 is a testament to BMW’s ongoing innovation in engine technology, pushing the boundaries of performance while addressing environmental concerns through cleaner, more efficient engines.
