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The goal of EGR is thus to reduce NO x production by reducing the combustion temperatures. In modern diesel engines, the EGR gas is usually cooled with a heat exchanger to allow the introduction of a greater mass of recirculated gas. However, uncooled EGR designs do exist; these are often referred to as hot-gas recirculation (HGR).
This affected up to 25% of the recalled cars, where the owners had been notified but the cars had not yet been inspected. BMW is reported to have been aware since 2016 that more than 4% of the affected cars in South Korea had experienced failures in the EGR coolers, [88] leading to approximately 20 owners suing the company. [89]
This causes excessive buildup in the cooler matrix, and when the engine warms up these solid chunks of buildup can detach from the EGR cooler and get sucked into the plastic intake tube, melting holes in the intake tube, causing a massive boost leak and in very rare cases an engine fire. BMW has issued a recall to over 1.6 million vehicles in ...
Compared with its N42 predecessor, the N46 features a revised crankshaft, intake manifold [2] and valvetrain. [3] In 2007, the N46 was updated, which was known as the N46N. Changes included the intake manifold, exhaust camshaft and the engine control unit was changed from Bosch Motronic version ME9.2 to version MV17.4.6.
This differs from naturally aspirated applications where the intake manifold will remain in vacuum while under load. Thus, when a forced induction engine is under load, the intake manifold can no longer be used to draw blow-by gasses out of the crankcase and will instead begin to exacerbate the problem by increasing crankcase pressure.
SPOILER ALERT: This article contains major plot details from the finale of Edward Berger’s “Conclave.” Megyn Kelly took to X to criticize Edward Berger’s “Conclave” as a “disgusting ...
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The BMW N52 is a naturally aspirated straight-6 petrol engine which was produced from 2004 to 2015. The N52 replaced the BMW M54 and debuted on the E90 3 Series and E63 6 Series . The N52 was the first water-cooled engine to use magnesium/aluminium composite construction in the engine block. [ 1 ]