News: 2015 MotoGP Safety Vehicles. M4 to feature water injection system.

allroad

New member
The BMW M4 (somewhat tweaked) and the BMW S 1000 RR Safety Bike. Both would make for incredible high speed police vehicles

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http://blackflag.jalopnik.com/bmw-m...g-safety-1685625437/1685627642/+matthardigree

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http://www.motogp.com/en/photos/2015/BMW+S+1000+RR+Safety+Bike+1
 
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This car is not only about looks, it actually includes new BMW M Technology, Water Injection System

The cooler supercharged air reduces the engine’s tendency to knock, making it possible to bring the point of ignition forward and thus closer to the optimum value. This makes the combustion process more effective, whilst at the same time reducing the combustion temperature. On the other hand, cool air has a higher density which increases the oxygen content in the combustion chamber. This results in a higher mean pressure during the combustion process and in turn optimises performance and torque. Finally, the effective internal cooling of the combustion chamber reduces the thermal strain on numerous performance-related components. This not only prevents damage to pistons, exhaust valves and catalytic converters, but also reduces the strain on the turbocharger, which is subjected to lower exhaust temperatures.

The lower process temperatures also reduce the formation of hazardous substances, in particular nitrogen oxide (NOX). Water injection consequently dramatically improves the effectiveness of the engine.

Using water injection to increase the knocking limit also helps to largely resolve a familiar conflict in objectives when designing powerful engines. Performance and consumption are not least determined by the compression ratio. This also applies, in particular, to highly charged turbo engines like the BMW M TwinPower Turbo, inline six-cylinder. Thanks to a high compression ratio, this engine is highly efficient and boasts low consumption figures, especially in the partial load range. However, the maximum compression ratio is limited by the knocking tendency when fully loaded. Water injection is also hugely beneficial here, as it reduces the tendency for the engine to knock, whilst at the same time increasing the compression ratio. This way, the turbo engine can achieve optimal performance across a wide range of operating points

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http://f80.bimmerpost.com/forums/showthread.php?t=1090892
 
serieux toi la tu penses que le water injection est nouveau ????

astie j'avais mis ca sur mon Colt GTS turbo en 1990 !

ca remonte aux premiers hot rods dans les annees 50 du water injection
 
serieux toi la tu penses que le water injection est nouveau ????

astie j'avais mis ca sur mon Colt GTS turbo en 1990 !

ca remonte aux premiers hot rods dans les annees 50 du water injection

Qui a dit que le water injection est nouveau? Il a simlement dit : new BMW M Technology, Water Injection System

Tu sautes ben vite aux conclusions...

Toi ... As-tu dis que ton Colt GTS Turbo 1990 était plus performmant que cette M4 ?
 
On est loin d'être à la même efficacité mais oui c'est vieux.
remember the turbo-rocket v8 with the turbo-fluid?(water+meth)

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Qui a dit que le water injection est nouveau? Il a simlement dit : new BMW M Technology, Water Injection System

Tu sautes ben vite aux conclusions...

Toi ... As-tu dis que ton Colt GTS Turbo 1990 était plus performmant que cette M4 ?

new technology .... ecrit bien clair en plus

rien de nouveau dans cette technologie
 
For BMW M it is new...but surely a 1990 econo box Dodge Colt chicken delivery car is much better technology than a 2015 M car. Long live Dodge...
 
Thread cliffs:

1-BMW Claims dope new innovation

2-Alain points out that this technology existed for ages

3-
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Je ne veux pas prendre la défense d'Alain, il est en masse capable de se défendre lui-même.

Mais la sérieusement, vous lui rentrez dedans vraiment pour rien.

Il modifiait des moteurs pendant que la plupart d'entre-vous jouaient encore au Nintendo dans leur chambre chez leurs parents.


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À vrai dire, c'est plutôt Alain qui a été un peu trop vite à assumer que OP (allroad) ne savait pas que le water injection a déjà existé dans une forme ou une autre par le passé.
 
I have to side with alain on this one, you refer to it as "new bmw M technology" as if they invented it...a more accurate description would be "new for bmw M" or "new to bmw M"....the way it's worded in the article and in the post kind of attempts to imply that this is brand new technology invented by the bmw engineers...

Definitely not impressed with bmw lately...
 
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