The typical modern Diesels in passenger cars offer their maximum power output at around 4.000 rpm.
Imagine a diesel that can burn efficiently the fuel in one and a half times these revs.
This is one of the things "Pulling Piston Engine" achieves, because the pistons pass from TDC slower, providing additional time and better conditions to the fuel for effective combustion.
In case that two cycle operation is selected for the "Pulling Piston Engine" with the space behind the piston acting as the scavenging pump, the resulting efficiency, cost and power concentration becomes better than anything known today.
The Pulling Piston Engine is not restricted to Diesels.
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The "unconventional" kinematic mechanism of the Pulling Piston Engine
shifts the combustion to the slow dead center.
The Opposed piston Pulling Rod Engine (OPRE) does exactly the same.
On this account, PPE is the "father idea" of
OPRE
A few details from the PPE mechanism:
Below is the Harmonic engine, the "parent" idea of the PPE engine. Look at the flames from exhaust. More at the end of Teaching