Tornax reduced its 600 cc range to two models, and added its first lightweight model, the K 20, with a 200 cc two-stroke engine made by ILO.

The standard engine includes a muffler exhaust system and an intake silencer and filter, with an after muffler also available to further reduce engine noise.

An antiknock agent is a gasoline additive used to reduce engine knocking and increase the fuel's octane rating by raising the temperature and pressure at which ignition occurs.

An antiknock agent is a gasoline additive used to reduce engine knocking and increase the fuel's octane rating.

Better atomization allows for a more complete burn of all the fuel and helps reduce engine knock by enlarging the flame front.

Ethylbenzene is added to gasoline as an anti-knock agent, meaning it reduces engine knocking and increase the octane rating.

The freedom to run all propulsion and ship services from a single prime mover for much of the ship's life, thus dramatically reducing engine running hours and emissions.

More about reducing engine idling.

Methylcyclopentadienyl manganese tricarbonyl is used as an additive in unleaded gasoline to boost octane rating and reduce engine knocking.

Yak-1M - Yak-3 prototype with a smaller wing, revised cooling intakes, reduced overall weight and upgraded engine.