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in spark-ignition engines, silicon nitride is used for rocker arm pads for lower wear, turbocharger for lower inertia and less engine lag, and in exhaust gas control valves for increased acceleration.
em motores de ignição comandada, o nitreto de silício é usado em almofadas balancim para menor desgaste, e em válvulas de controle de gases de escape para aumentar a aceleração.