The Pivotal Piston
is not reliant on skirt/liner contact to carry heat from the piston.
Heat is easily removed from the piston crown because the pivot
shaft provides the entry and exit points for cooling water. Direct
cooling allows the engine to be run at sustained high load.
The direct cooling
can be engineered to any degree that is required. Unlike a conventional
sliding piston which is reliant on a cooler cylinder to duct heat
away from the piston skirt it is possible to run the Pivotal Piston
at any temperature required, even at a lower temperature than
the engine itself.