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The M51 is a water-cooled and turbocharged inline six-cylinder diesel engine with a Bosch VP37-swirl-chamber-injection. [1] [2] [3] The displacement is 2.5 L; 152.4 cu in (2,497 cc) and the compression ratio is 22.0:1. Some engine variants have an intercooler in addition to the turbocharger, they can be identified by the tds. [2]
BMW is well known for its history of inline-six (straight-six) engines, a layout it continues to use to this day despite most other manufacturers switching to a V6 layout. . The more common inline-four and V8 layouts are also produced by BMW, and at times the company has produced inline-three, V10 and V12 engines, BMW also engineered non-production customised engines especially for motorsports ...
The BMW M21 is a straight-six diesel engine developed by the German engine manufacturer BMW. It has swirl chamber injection and is based on the M20 petrol engine [1] and was produced for BMW by the Upper Austrian Steyr engine plant from 1983 to 1991. It was succeeded by the M51. [2]
The M41 engine was the first four-cylinder diesel engine from BMW. The engine was derived from the six-cylinder BMW M51 engine and shared 86% of its components. This engine became available in several models of the E36: 4-door sedan; 5-door touring; 3-door compact; Fuel consumption is around 6.5 L/100 km (43 mpg ‑imp; 36 mpg ‑US) in ...
For the facelift of the model range in the year 2000, the M52 was replaced by the BMW M54 straight-6 engine [33] and the version used in the 530i model topped the Ward's 10 Best Engines list in 2002 and 2003. [34] The post-facelift V8 models (535i and 540i) continued to use the M62TÜ engine. Specifications for European models are shown below.
The engine, also used by the 1995–2000 3 Series Compact 316g model, was a re-tuned version of the BMW M43 four-cylinder engine. [28] When running on natural gas, the engine produced 73 kW (98 hp), [29] compared with 84 kW (113 hp) when running on petrol. It was only produced in 1995 and just 298 units were built. [22]
It was revised twice during its production time. It is based on its predecessor M51. The block and the crankcase of the first M57 engines and the TÜ (Technische Überarbeitung = revision) engines are made of cast iron, whilst the TÜ2 engines are made of aluminium instead. [1] The combustion chamber was also changed in the TÜ2. [1]
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 ...