Protected from detonation: a self-regulating piston engine created in Voronezh

Variable compression ratio allows the engine to save fuel at low loads

Engineers at Voronezh State Agrarian University named after Emperor Peter I have developed an unusual internal combustion engine design. The piston in it adjusts the compression ratio itself directly during engine operation.

The new development proposes abandoning complex hydraulic systems in favor of a more compact mechanical scheme. Engineers are trying to solve several problems at once: reduce piston mass, accelerate system response, and reduce the risk of detonation at high loads.

The idea is especially interesting for modern turbo engines. A variable compression ratio allows the engine to save fuel at low loads, and automatically reduce the risk of destructive detonation combustion during acceleration.

In fact, the engine can simultaneously combine the efficiency of an "atmospheric" engine and the thrust of a turbocharged unit.

The technology can be used not only in classic engines with a connecting rod, but also in rare rodless schemes with a crank-rocker mechanism. Such designs have long been considered exotic in engine building.

Read more on the topic: