Elsbett engine

The Elsbett, or Elko ("Elsbett Konstruktion") is an 89 horsepower (66 kW), direct-injection diesel engine invented by Ludwig Elsbett.¹ It is designed to run on pure plant oil (PVO). Elsbett AG, the current manufacturer, is based in Thalmässing, Bavaria.

The design limits of the loss of energy as heat by a variety of technologies:

• The fuel charge is injected in such a manner as to "blend perfectly with the air" and combust within a central core of hot air, not contacting the chamber walls.
• The engine also doesn't use any water cooling. Instead, oil is used as the singular coolant.