Quote:
Originally Posted by Bill Douglas
At first I thought it sounded like my SC engine with broken head studs. But after having read the details I love the sound of it. A high compression engine for running around town, then drops the compression to handle the turbo on boost.
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I would think that if you do have variable compression and boost, you would not program it based on user mode, but simply tune it over in combination of a wide variation of parameters.
Just like Variocam and ram and ignition is now varied across the rev range.
Think High compression at low revs for low end power then the turbo kicks in and the compression is dropped accordingly.
You can fit 1 bigger turbo instead of ninnying about with a smaller one for less turbo lag. and a bigger one for top end boost.
You could even opt to
turn on HC for initial spool up,
then turn it off & use the boost to accelerate,
once on cruising speed at the highway, turn boost off in favor for HC for reduced fuel cost at cruise.
To be honest the amount of variables now become so complicated that they are probably going to look at Self learning engine DME's running off Big Data.
Eg all the engines send their feedback to the DME,
the DME will still work closed loop off some basic programming,
but the DME's will then send their data to the cloud
Big Data will send back optimisations to the DME