Electronic Turbo Charging and Eliminating Lag

F30post has dug up a patent that points to BMW ‘s continued interest in turbo-charging. In this case it ‘s a blueprint for electronic turbocharging that should (theoretically) eliminate any lag from the system while remaining relatively effecient.

So what application(s) would we expect this in? If it ‘s successful and inexpensive don ‘t be surprised to see this in a lot of engines (hint small ones) later this decade. However we ‘re not entirely sure that BMW will be able to get this done cheaply and easily out of the gate. And if that ‘s the case the perfect vehicle for this technology would be a high performance application such as the forthcoming i8. Or perhaps (and this is more of a long-shot) it ‘s destined for a tri-turbo V6 powered M3. Either way it ‘s one to watch for.

Source: F30post

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  • Sackboy

    Love it ! CanNOT wait to see what the wizards at M do with this!  Should be fun to watch you guys cover- and fun to DRIVE ! sackboy

  • Nick Dawson

    Last July, sources revealed that the next M3/M4 engine would be a triple-turbo 3 litre six rated at approximately 440 bhp.Two twin-scroll turbos are said to work conventionally, with the third blower being electronically driven to boost low-rev throttle response.

    This same application would also be ideal for use on the 1.5 litre three-cylinder N38 engine (effectively half a 3 litre six) to be launched in MINI 3 in 2013, for the ‘S’ and JCW versions to boost power and torque. I think I am right in saying that the i8 already uses the 1.5 litre three-cylinder triple-turbo petrol engine, which when coupled to an electric motor develops 350 bhp. 

  • Patrick Lien

    Technically, wouldn’t this be electric supercharging?

  • Dr Obnxs

    It’s not the electric drive only fan boosters or electric superchargers that have been used in the past. It involves an elecric drive and clutch assembly so the turbine and compressor can be de-coupled. The electric drive can power the compressor, or be driven by the turbine for electricity generation as well. It’s a very interesting concept. Go read the stuff at the original source if you want more info.

  • Anonymous

    Electric supercharging should be the ideal solution.  It can tackle problems like turbo lag, excess pressure and heat from turbos (no need for a blow-off valve anymore), a non-linear power curve, drop-off in power at high RPMs, and unnecessary extra backpressure from the exhaust system.  If the engineers really wanted to harness the flow of exhaust gases, they could simply connect the impeller to an alternator and re-capture energy that way, similar to regnerative brakes, which would then provide the electricity to power the electric supercharger.  But that would still have the downside of not allowing the exhaust gases to get on with their life.

    By controlling the electric supercharger via computer, it would allow for mapping that compensates for altitude and ambient temperature, so a different amount of air would be force-fed depending on the given conditions.  I forsee a totally optimized completely flat torque curve and a perfectly linear horsepower curve to give the driver an instantaneous and predictable amount of thrust based on how much the accelerator pedal is depressed.

    Dump the turbos completely.