During the WWI era, they manufactured Hiero engines under license, in collaboration with Warschalowski and Eissler (or Essler).

“Werner-Pfleiderer Logo”

Their engines used individual cylinders.

“W&P, 95 CV”

The four-cylinder engine produced 90/95 CV. The lower cover of the crankshaft block served as the oil reservoir. The magnetos were Bosch.

This vertical-cylinder engine weighed 320 lbs and had a displacement of 483.36 in³.

“Inverted Version of the 95 HP Engine”

The same 95 CV engine was built with the cylinders inverted, as shown in the illustration.

“W&P 140-150 HP”

-The six-cylinder engine produced 140 to 150 HP, with a total displacement of 777.66 in³.

-There was also an eight-cylinder engine of this make with 220 HP and a total displacement of 1166.96 in³. It weighed 595 lb.

From Appendix 12: Another version of the four-cylinder vertical floor-mounted engine, different from the one shown in the main text. From Flugsport.

“With short crankcase on the propeller side”