The BMW Goldfisch is a
SOHC 32-valve
V16 6.7-litre prototype
automotive piston engine based on the
BMW M70
The BMW M70 is a naturally-aspirated, SOHC, V12 petrol engine, which was BMW's first production V12 and was produced from 1987 to 1996.
The BMW S70/2 engine, largely unrelated to the M70 and S70B56 engines, is a naturally-aspirated, DOHC, V12 ...
V12 V12 or V-12 may refer to:
Aircraft
* Mil V-12, a Soviet heavy lift helicopter
* Pilatus OV-12, a planned American military utility aircraft
* Rockwell XFV-12, an American experimental aircraft project
* Škoda-Kauba V12, a Czechoslovak experim ...
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" for short, 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 ...
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 i ...
, 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 to ...
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 or V12 engine. Whilst it did supplant the original E24 based 6 Series in 1990, it was n ...
, 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
BMW M70
The BMW M70 is a naturally-aspirated, SOHC, V12 petrol engine, which was BMW's first production V12 and was produced from 1987 to 1996.
The BMW S70/2 engine, largely unrelated to the M70 and S70B56 engines, is a naturally-aspirated, DOHC, V12 ...
V12 layout but with 4 more cylinders added.
* 6,651 cm
3 60°-V16 engine
* Cast aluminium block and cylinder heads
*
SOHC, 2 valves per cylinder
* Bore and stroke:
* Bore spacing:
*
Compression ratio: 8.8:1
* Maximum power: at 5,200 rpm
* Maximum torque: 62.5
kp·m[According 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) at 3,900 rpm
* Redline: 6,000 rpm
* Engine management: 2 separate Bosch DME 3.3 for each bank
* Dry weight:
See also
*
List of BMW engines
BMW has been producing engines for automobiles, motorcycles and aircraft since 1917, when the company began production of an inline-six aircraft engine. They have been producing automobile engines since 1933.
Motorcycle engines
Automotive ...
Notes
References
Bibliography
*
{{Use mdy dates, date=July 2017
Goldfisch V16
V16 engines
Gasoline engines by model