Quote:
Originally Posted by lakedude
It looks like they are working on "DoD" (cylinder-deact) for the future:
"The bottom line is, DOD on more cars could mean more--and better--choices for enthusiasts. As an example, an early prototype C6 Corvette with an LS2 running DOD provided equal power and acceleration to an LS2 without DOD, but produced 35 mpg instead of 30 mpg. When applied over a large volume of vehicles, GM could have the choice to pocket the improvement in economy and reduce the need to import small outside-sourced cars, or it could build a larger V-8 with more power (say a 6.5L V-8 with 430hp) and keep the same 30 mpg. In the end, for reasons not entirely understood by us but conceivably related to exhaust packaging, DOD technology did not make it into the C6 Corvette, GTO, CTSv or any other performance application as we had hoped."
From:
http://www.superchevy.com/technical/.../0405sc_gmdod/ |
thank you! that is so cool... and the part about the problems with the cadillac 8-6-4 and why it "failed"...
Quote:
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Meagher told PHR: "One area of dissatisfaction [with the Cadillac] was the transition feel when going from four to six to eight, or from eight to six to four cylinders. The reason that electronic throttle control helps that is that we are able to move the throttle with the computer, not the pedal. The computer moves the throttle blade without the customer knowing it. So the engine torque is the same on both sides of the transition event. You don't want the customer to know this transition has occurred."
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was fascinating. i'd never heard that before, and it makes total sense. they discovered a problem years ago that probably could only be solved by the compute power available today!
thanks!
but the part about it not getting into the C6 because of some exhaust manifolding issues???? c'mon....
