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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. It is the second engine from BMW's modular engine plan, sharing most of its components with the BMW B38 petrol engine. Power output is either 70 or 85 kW (94 or 114 hp).
The BMW B38 is a 1.2 and 1.5 L (1,198 and 1,499 cc) turbocharged straight-three DOHC petrol engine, which replaced the straight-four BMW N13.Production started in 2013. It is part of a modular BMW engine family, of straight-three (B38), straight-four and straight-six alloy block and head petrol engines, [1] which use a displacement of 400 cc (24.4 cu in) per cylinder in the 1.2 and 500 cc (30. ...
For example, if the static compression ratio is 10:1, and the dynamic compression ratio is 7.5:1, a useful value for cylinder pressure would be 7.5 1.3 × atmospheric pressure, or 13.7 bar (relative to atmospheric pressure). The two corrections for dynamic compression ratio affect cylinder pressure in opposite directions, but not in equal strength.
The engine pressure ratio (EPR) is the total pressure ratio across a jet engine, measured as the ratio of the total pressure at the exit of the propelling nozzle divided by the total pressure at the entry to the compressor. [1] Jet engines use either EPR or compressor/fan RPM as an indicator of thrust. [2]
An indicator diagram is a chart used to measure the thermal, or cylinder, performance of reciprocating steam and internal combustion engines and compressors. [1] An indicator chart records the pressure in the cylinder versus the volume swept by the piston, throughout the two or four strokes of the piston which constitute the engine, or ...
The 5L-E is a 3.0 L (2,985 cc) EFI version of the 5L engine. It is the latest member of the L family. It is the latest member of the L family. It has a bore and stroke of 99.5 mm × 96 mm (3.92 in × 3.78 in), with a compression ratio of 22.2:1.
The highly regarded engine was named International Engine of the Year, Best Engine in the 1-litre to 1.4-litre category, and Green Engine of the Year, ahead of state-of-the-art hybrid and twin-turbo diesel competition.
The mean effective pressure (MEP) is a quantity relating to the operation of a reciprocating engine and is a measure of an engine's capacity to do work that is independent of engine displacement. [1] Despite having the dimension of pressure, MEP cannot be measured. [ 2 ]