The BMW Goldfisch is a

SOHC An overhead camshaft (OHC) engine is a piston engine in which the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combus ...

32-valve V16 6.7-litre prototype automotive

piston engine A reciprocating engine, more often known as a piston engine, is a heat engine that uses one or more Reciprocating motion, reciprocating pistons to convert high temperature and high pressure into a Circular motion, rotating motion. This article ...

based on the

BMW M70 The BMW M70 is a Naturally aspirated engine, naturally-aspirated, Overhead camshaft#Single overhead camshaft, SOHC, V12 engine, V12 petrol engine, which was BMW's first production V12 and was produced from 1987 to 1996. It was also the first Germa ...

V12 engine.

Development

Development started in the late 1980s. The engine was built to demonstrate the maximum potential of the small cylinder displacement engine family. Also, a three-cylinder model of the same engine family was made to set a minimum. Development started on July 8, 1987, and by the beginning of 1988 the engine was ready. It was put on a

dynamometer A dynamometer or "dyno" is a device for simultaneously measuring the torque and rotational speed ( RPM) of an engine, motor or other rotating prime mover so that its instantaneous power may be calculated, and usually displayed by the dyna ...

in January and February 1988. Afterwards, it was installed in a modified long wheelbase

BMW 7 Series (E32) The BMW E32 is the second generation of the BMW 7 Series luxury cars and was produced from 1986 until 1994. It replaced the E23 and was initially available with straight-six or V12 powerplants. In 1992, V8 engines became available. From its inc ...

, and the first driving tests were made in May 1988. On July 7, 1988, the engine was presented internally within BMW. To prevent an "arms race" with other engine manufacturers, the V16 was never put into mass production. Additionally, a higher-performance version of the M70 engine, the

S70B56 S7 or S-7 may refer to: Electronics and software * Acer Aspire S7, a laptop * Samsung Galaxy S7, a smartphone * Samsung Galaxy Tab S7, a tablet computer * , an automation system based on Programmable Logic Controller from Siemens, successor t ...

installed in the

BMW 850CSi The BMW E31 is the first generation of the BMW 8 Series. It is a grand tourer built by BMW from 1990 to 1999 as a 2-door coupé, powered by either a V8 engine, V8 or V12 engine, V12 engine. Whilst it did supplant the original BMW E24, E24 base ...

, produced and of torque, almost reaching the power output of the V16. This engine was also trialled in the Bentley Mulsanne as a potential "upgrade" from a turbocharged V8 engine. Unlike the 7 Series, the engine fit in the bay with room for radiator and ancillaries.

Technology and performance

The engine design virtually copies the

V12 layout but with 4 more cylinders added. * 6,651 cm³ 60°-V16 engine * Cast aluminium block and cylinder heads *

, 2 valves per cylinder * Bore and stroke: * Bore spacing: *

Compression ratio The compression ratio is the ratio between the maximum and minimum volume during the compression stage of the power cycle in a piston or Wankel engine. A fundamental specification for such engines, it can be measured in two different ways. Th ...

: 8.8:1 * Maximum power: at 5,200 rpm * Maximum torque: 62.5 kp·mAccording to Karlheinz Lange, one of the engineers who worked on this engine, the maximum torque is 63.7 kp·m (625 N·m). (613

N·m The newton-metre or newton-meter (also non-hyphenated, newton metre or newton meter; symbol N⋅m or N m) is the unit of torque (also called ) in the International System of Units (SI). One newton-metre is equal to the torque resulting fr ...

) at 3,900 rpm * Redline: 6,000 rpm * Engine management: 2 separate Bosch DME 3.3 for each bank * Dry weight:

Notes

References

Bibliography

* {{Use mdy dates, date=July 2017 Goldfisch V16 V16 engines Gasoline engines by model

Development

Technology and performance

See also

Notes

References

Bibliography