#combustion engine

• Crankshaft assembly — An articulated mechanical kinematic assembly within an internal combustion engine or compressor, structurally composed of the crankshaft, connecting rods, pistons, and gudgeon pins, whose fundamental role is to transform the reciprocating linear motion of the pistons into continuous rotational motion of the crankshaft.
• Anti-knock agent — A chemical substance or additive added to fuels to increase their resistance to premature auto-ignition and to prevent the phenomenon of detonation in internal combustion engines; a compound that regulates the burning rate of the fuel mixture. As an adjective, it describes a fuel, mixture, or structural effect capable of ensuring a smooth and efficient engine operation, eliminating parasitic metallic knocks.