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In diesel engines in particular, EGR systems come with serious drawbacks, one of which is a reduction in engine longevity. For example, because the EGR system routes exhaust gas directly back into the cylinder intake without any form of filtration, this exhaust gas contains carbon particulates. And, because these tiny particles are abrasive ...
The all-wheel drive BMW X3 and rear-wheel drive BMW 320d models, built approximately between September 2001 and December 2004, were fitted with the M47TÜ ("M47 Technical Update"). The exact production week is not known and was probably later than Production Week 33 in 2001 (e.g. one cannot rely on a UK 51 plate registered BMW 320d to have the ...
An exhaust heat recovery system turns waste heat energy in exhaust gases into electric energy for batteries or mechanical energy reintroduced on the crankshaft. The technology is of increasing interest as car and heavy-duty vehicle manufacturers continue to increase efficiency, saving fuel and reducing emissions.
The NO x adsorber was designed to avoid the problems that EGR and SCR experienced. An adsorbent such as zeolite traps the NO and NO 2 molecules — acting as a molecular sponge. Once the trap is full (like a sponge full of water) no more NO x can be absorbed. Various schemes have been designed to "purge" or "regenerate" the trap.
The B47 engine is part of the modular family of engines, along with the B38, B48, B57 and B58. [1] The B47 complies with the Euro 6 emissions standard, and features a dual overhead camshaft with 4 valves per cylinder and a single turbocharger; while 165 kW (221 hp) and 170 kW (228 hp) engines feature twin-turbochargers.
The BMW N57 is a family of aluminium, turbocharged straight-6 common rail diesel engines. The engines utilize variable geometry turbochargers and Bosch piezo-electric injectors. [ 1 ] The engine jointly replaced the M57 straight-6 and M67 V8 engines.
The BMW N54 is a twin-turbocharged straight-six petrol engine that was produced from 2006 to 2016. [1] It is BMW's first mass-produced turbocharged petrol engine and BMW's first turbocharged petrol engine since the limited-production BMW M106 was discontinued in 1986.
The BMW S62 engine (full model code S62B50) is the high-performance variant of the M62, which is fitted to the E39 M5 and the E52 Z8. The S62 was BMW's first V8 engine to have double-VANOS (variable valve timing on the intake and exhaust camshafts).
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