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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. In 2015 the N57 started to be replaced with the B57 engine, beginning with the G11 730d.
bmw n57 Sound of the engine in a BMW E39 The BMW M57 is a straight-6 diesel engine produced from 1998 up to 2013 in BMW's upper Austrian engine plant in Steyr .
The damper will be fitted at the front of the engine (opposite the clutch or transmission) just beyond the cover of the timing chain, gears, or belt, and behind the accessory drive pulley (which may carry one or more V, serpentine, or cogged belts.) In older vehicles the pulley and damper were separate units that were bolted together.
Timing chain failure may call for engine replacement or a costly repair. The most seriously affected units which require the most extensive repairs were produced from 01.03.2007 to 05.01.2009. [4] However, there have been reports of timing chain failure in BMW diesel engines manufactured until 2015.
Aside from the belt/chain itself, also common is a failure of the tensioner, and/or the various gear and idler bearings, causing the belt/chain to derail. Furthermore, in engines where the timing belt drives the water pump, failure of the water pump can cause the pump to seize, which can break the timing belt or chain.
The B57 replaced the previous N57 diesel engine, and was first introduced in the G11 7 Series. The B57 is available in configurations of up to 4 turbochargers, that operate in a double-series layout. [4] In addition to BMW's own brand vehicles, the BMW B57 is also used in a diesel variant of the Ineos Grenadier. [5]
The BMW M67 is an automobile diesel engine, used in the BMW 7 Series. It was first introduced in 1998, and used until 2009. It was first introduced in 1998, and used until 2009. The engine is a common rail turbodiesel V8 design, using double overhead camshafts and 32 valves.
The BMW B37 is a 1.5-litre (1,496 cc), diesel, straight-three engine with a single, mono-scroll and variable-geometry turbocharger. The compression ratio is 16.5:1. The compression ratio is 16.5:1. It is the second engine from BMW 's modular engine plan, sharing most of its components with the BMW B38 petrol engine.