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<div><div dir="auto">Hello friends,</div><div dir="auto"><br></div><div dir="auto">Any of you studied the MGU-H part of Formula One's ERS? It has one really novel bit. I'll get to that, but first, an ERS overview...</div><div dir="auto"><br></div><div dir="auto">MGU-K (Motor Generator Unit - Kinetic) is just a generator/motor on the petrol engine crank that utilizes otherwise wasted kinetic energy, say, under braking - or even adding to braking since in generator mode, the MGU-K absorbs kinetic energy. (Given clandestine electronics, could this not be a form of power assisted brakes or even ABS?) Under acceleration, the unit functions as an electric motor adding power to the petrol engine's output.</div><div dir="auto"><br></div><div dir="auto">MGU-H (Motor Generator Unit - Heat) is also a generator/motor bit but on the turbocharger. I can see why they call this a Heat device but I think that's really a misnomer since it too is using kinetic energy, just from the turbo shaft rather than the crank. Anyway, the MGU-H generates electricity from otherwise wasted turbo speed. Said another way; When the turbine is attempting to spin faster than the compressor needs, say, when the driver lifts. As such, its a mechanical waste gate - just without wasting the kinetic energy as excess pressure.</div><div dir="auto"><br></div><div dir="auto">The clever bit that caused me to write this excessively boring post is that the MGU-H also acts as a motor to spin up the compressor before the turbine comes into full play. Therefore the MGU-H helps negate turbo lag! That's pretty cool! If '80s era 911s had that, their back ends wouldn't pass their front ends quite as often!</div><div dir="auto"><br></div><div dir="auto">Okay, back to your regularly scheduled program, already in progress.</div><div dir="auto"><br></div><div dir="auto">-rick</div></div><div><br></div><div id="composer_signature"><div style="font-size:85%;color:#575757">Happy Connecting. Sent from my Sprint Samsung Galaxy S® 5</div></div></body></html>