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Old 01-27-2008, 04:05 AM
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In Cylinder Video N54 3.0 Twin Turbo

Others may have seen it, but it is pretty interesting.

http://www.youtube.com/watch?v=HHqrP18GCL4
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Old 01-27-2008, 05:22 AM
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very cool vid, wished it lasted longer!
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Old 01-27-2008, 05:35 PM
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Interesting that they have a pilot injection phase just like diesels. Thanks for the vid.
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Old 01-27-2008, 07:42 PM
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The engine management system, in conjunction with the piezo injectors, allows up to 3 injection events. It is load and rpm dependent. Because there are two events in the video, the engine being filmed is either at low torque level and rpm, or medium rpm. At high torque/low rpm conditions there are three events. This helps to allow the use of a 10.2:1 compression ratio, which is fairly high for a turbocharged engine running pump gas.
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