[Heihetech]

To reply "t vago"'s comments below ----

Heat transfer is always bi-directional, so if you think cylinders will be heated
up by coolant, then the heat generated from compression will be transfered
into coolant. This means energy loss into the coolant. In case of Traditional
Cylinder Deactivation, compression happens TWICE in One ENGINE cycle, so
the energy loss will be doubled.

Nothing is perfect in this world, so my online article and DCD itself is not so
perfect, but it does save with very high utilization. Theoratically, as you
have analyzed, Traditional Cylinder Deactivation (TCD) seems more perfect
than Dynamic Cylinder Deactivation (DCD), but it suffers utilization as one
of its killing factors. TCD disables 50% cylinders in the engine, left a power
output of 45%. Such power can't be used under most of driving modes. As
a resullt, TCD has be off most of the time, becoming useless. There seems
always NO sunshine on TCD's "solar panel", where's the benefit?

In contrast, DCD can be turned on most of time, resulting high utilization.
The resulted power level will be from 50% to 100% in multiple stages, based
on the driving need. It makes a good match between engine power and the
load, yeilding maximum savings. There's always sunshine on DCD's "solar
panel".

Further, TCD WON'T be applied to general vehicles on the road by
aftermarket retrofitting. How does it save fuel in no where? NO WAY！