BMW M44
| BMW M44 | |
|---|---|
 | |
| Overview | |
| Manufacturer | BMW |
| Production | 1996–2001 |
| Layout | |
| Configuration | DOHC Straight-4 |
| Chronology | |
| Predecessor | BMW M42 |
| Successor | BMW N42 |
The BMW M44 is a straight-4 DOHC piston engine which replaced the M42 and was produced from 1996-2001. It was produced alongside the M43 straight-4 engine, with the M44 being the higher performance engine. The M44 was replaced by the N42 engine.
Compared with the M42, the M44 has an extra 6% displacement, rocker arms,[1] hot-wire MAF[2] and other detail changes. As per the final versions of the M42, the M44 has a dual length intake manifold (called "DISA" by BMW). Peak power is the same as the M42,[3] however torque is increased by 5 N⋅m (4 lb⋅ft).
Models
M44B19
The M44B19 has a displacement of 1895 cc,[4] which is achieved through a bore of 85 mm (3.3 in) and stroke of 83.5 mm (3.3 in).[5] A compression ratio of 10:1 is used, along with Bosch Motronic 5.2 fuel injection.[6]
The crankshaft has an increased stroke from the M42's 81mm and is cast instead of forged.[7] Also revised were the valve actuators which are of a roller pivoting arm type.[8] This design replaces the M42's cam on spring cup design and results in a 30% decrease in rotational resistance from the cams.
| Engine | Displacement | Power | Torque | Redline | Years |
|---|---|---|---|---|---|
| M44B19 | 1,895 cc (116 cu in) | 103 kW (138 hp) @ 6000 | 180 N⋅m (133 lb⋅ft) @ 4300 | 6500 | 1996-2001 |
Applications:
See also
References
- ↑ "M42 vs M44". www.318ti.org. Retrieved 6 March 2017.
- ↑ "Whats a quick way to tell a M44 engine from a M42 engine?". www.bimmerforums.com. Retrieved 6 March 2017.
- ↑ "BMW M42 and M44 Four Cylinder Engines". www.unixnerd.demon.co.uk. Retrieved 12 March 2017.
- ↑ "BMW Heaven Specification Database | Engine specifications for M44 engines". www.bmwheaven.com. Retrieved 2012-06-03.
- ↑ "M44 Engine". www.engineswork.com. Retrieved 7 March 2017.
- ↑ "Motronic 5.2 (M44)". www.318ti.org. Retrieved 7 March 2017.
- ↑ "BMW M44 Engine Technical Information (1996)". www.bmw3series.johnavis.com. Retrieved 7 March 2017.
- ↑ "Whats the difference between M44 and M42?". www.bimmerforums.co.uk. Retrieved 7 March 2017.
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| straight-6 turbo |
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| V10 | S85 >> | ||||||||||||||||||||||||||||||||||||||||
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