The BMW M328 is an overhead valve straight-six petrol internal combustion engine which was produced from 1936 to 1940. It was a high-performance development of the BMW M78 engine that was produced alongside the M78.[1][2][3]

Compared with the M78, the M328 has an aluminium cross-flow cylinder head[4] with hemispherical combustion chambers.[5]

The M328 was used in the BMW 328 and BMW 327/28 coupes.[2][3][6]

After World War II the engine was also licensed to Bristol Cars in the United Kingdom.

Design

The M328 had an unusual valvetrain design; although the camshaft is located in the engine block, the exhaust valves are actuated by a transverse pushrod from the intake valves.[5] This results in a valve layout similar to a DOHC engine.

With a bore of 66 mm (2.60 in) and a stroke of 96 mm (3.78 in), the displacement was 1,971 cc (120.3 cu in), the same as its M78 predecessor. Fuel supply was via three Solex "30 JF downdraft" carburetors.[5]

The M328 engine has a compression ratio of 7.5:1 and produces 59 kW (79 bhp) at 5000 rpm.[5][7]

Versions

Version Displacement Power Torque Years
M328 1,971 cc (120.3 cu in) 59 kW (79 bhp)
@ 5000 rpm		 126 N⋅m (93 lb⋅ft)
@ 4000 rpm		 1936-1940

Applications:

See also

References

Notes

  1. ^ "BMW World - 6-Cylinder Engines". www.usautoparts.net. Archived from the original on 13 September 2010.
  2. ^ a b Lewin & Purves 2016.
  3. ^ a b Lewin 2004, pp. 191, 192, 251, 253, 257.
  4. ^ "1937 BMW 328". www.carfolio.com. Retrieved 23 August 2017.
  5. ^ a b c d "BMW 328 - the legendary roadster". www.bmwccn.no. Archived from the original on 3 January 2010.
  6. ^ Norbye 1984.
  7. ^ "1937 BMW 328". www.carfolio.com. Retrieved 24 August 2017.

Bibliography

Allikas: http://en.wikipedia.org/wiki/BMW_M328
No tags for this post.