m-power.com engine pics and discussion
09-22-2011, 03:57 PM
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must be registered to enter the closed room, but great article and engine pics..
http://www.m-power.c...oom.jsp?lang=en
....One key advantage of this turbo engine is the high torque available from speeds as low as the bottom range. Whereas I have to use the right gear with the matching speed for the V10, the new engine with M TwinPower Turbo technology delivers unbridled thrust over a wide speed range. The new motor provides nearly 700 Nm of torque at a speed as low as 1500 rpm. In the V10, this was about 300 Nm. The characteristics of the high speed turbo unit with its extremely spontaneous response make the V8 in the new BMW M5 the ultimate sports engine...."
"....Let?s start with the intake.
The charge air exiting the compressor measures as much as 130 °C and must be cooled. In this engine, the charge air is not cooled with air, but indirectly with water. So I don?t need to transfer the air through long pipes, and the throttle losses are very much lower. We use coolers and pipe cross sections of exceptionally generous sizes. Intake silencers and charge air coolers are installed very close to the engine. All of these measures contribute to dethrottling on the intake side...."
"...The V8 engine of the new BMW M5 is now also fitted with ?VALVETRONIC?. Can you tell us what that means?
With the VALVETRONIC, the intake valve lift can be varied continuously from two or three tenths of a millimetre to the max limit. The advantage of this is best seen when compared with the conventional aspirated engine. In this latter case, the power is regulated via the so called throttle valve. The engine always tries to take in the full quantity of air, but I?m just not letting it. The valve is open fully only at full throttle. When I close the throttle gap, the engine generates a partial vacuum throughout the intake system. When the intake valve is closed and the piston starts moving up, this partial vacuum can no longer be used for the engine..."
****seriously, register and read the entire article.....
http://www.m-power.c...oom.jsp?lang=en
....One key advantage of this turbo engine is the high torque available from speeds as low as the bottom range. Whereas I have to use the right gear with the matching speed for the V10, the new engine with M TwinPower Turbo technology delivers unbridled thrust over a wide speed range. The new motor provides nearly 700 Nm of torque at a speed as low as 1500 rpm. In the V10, this was about 300 Nm. The characteristics of the high speed turbo unit with its extremely spontaneous response make the V8 in the new BMW M5 the ultimate sports engine...."
"....Let?s start with the intake.
The charge air exiting the compressor measures as much as 130 °C and must be cooled. In this engine, the charge air is not cooled with air, but indirectly with water. So I don?t need to transfer the air through long pipes, and the throttle losses are very much lower. We use coolers and pipe cross sections of exceptionally generous sizes. Intake silencers and charge air coolers are installed very close to the engine. All of these measures contribute to dethrottling on the intake side...."
"...The V8 engine of the new BMW M5 is now also fitted with ?VALVETRONIC?. Can you tell us what that means?
With the VALVETRONIC, the intake valve lift can be varied continuously from two or three tenths of a millimetre to the max limit. The advantage of this is best seen when compared with the conventional aspirated engine. In this latter case, the power is regulated via the so called throttle valve. The engine always tries to take in the full quantity of air, but I?m just not letting it. The valve is open fully only at full throttle. When I close the throttle gap, the engine generates a partial vacuum throughout the intake system. When the intake valve is closed and the piston starts moving up, this partial vacuum can no longer be used for the engine..."
****seriously, register and read the entire article.....
09-22-2011, 04:37 PM
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09-23-2011, 02:08 PM
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