NYT article - GM cylinder dropping

[Bruce]

Turns off the fuel and spark as I understnd it, and uses 4 cylinders just as
air pumps to circulate air thru the engine to cool it.
Bruce



>      Interesting mention of the 4-6-8 . The Northstar will alternately cut
> cylinders
>      when in Overheat Mode. More Bits and pieces of code to be used down
>      stream , in GMs way of thinking, I gather.
>      Len
>
> >Not exactly EFI related, but GM related.
> >
> >New York Times, Business section, 5/29/01 article says GM is in concept
> >with a new version of the 1981 "4-6-8" motor in trucks which alternates
> >between 8 and 4, no 6 due to vibrational problems.    Says a 8 to 10%
> >increaes in fuel efficiency.
> >
> >"In the new version, an electronically controlled hydraulic system, which
> >uses ordinary engine oil, is used to alter the lifters...   The lifters
> >shorten themselves by telescoping, thus closing off the valves".
> >
> >-> Bob Valentine
> >-> bob at tecmark.com
> >
> >
> >
>
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