antiknock

• Descreve uma substância, geralmente adicionada ao combustível, que reduz ou impede a detonação ou o batimento do motor em motores de combustão interna.

Describes a substance, typically added to fuel, that reduces or prevents engine knocking or pinging in internal combustion engines.

1. Suppressing engine knockC1formaltechnical

   Describing a substance or additive that reduces or prevents the metallic pinging sound (knocking) in internal combustion engines.

   Antidetonante

   • Tetraethyl lead was a common antiknock additive in gasoline.
   • Modern engines use antiknock agents to improve fuel efficiency.
   • The antiknock properties of this fuel prevent engine damage.

• Substantivo que designa um composto químico adicionado ao combustível para evitar ou reduzir a detonação do motor, ou adjetivo que descreve algo que suprime a detonação do motor.

A noun referring to a chemical compound added to fuel to prevent or reduce engine knocking, or an adjective describing something that suppresses engine knock.

1. Fuel additiveC1formaltechnical

   A chemical compound added to gasoline to reduce or prevent engine knocking (detonation) in internal combustion engines.

   Antidetonante

   • Tetraethyl lead was historically the most common antiknock additive.
   • Modern antiknock agents include compounds like methylcyclopentadienyl manganese tricarbonyl.
   • The use of antiknock additives improves engine efficiency and performance.