engine derating
[/ˈɛndʒɪn dɪˈreɪtɪŋ/]
nounpl: engine deratings
redução de potência do motor
1. The reduction of an engine's maximum power output or performance capability below its design specifications, typically for operational safety, durability, or environmental compliance reasons.
Engine derating was necessary after the aircraft encountered high altitude conditions that reduced oxygen availability.
A redução de potência do motor foi necessária após a aeronave encontrar condições de grande altitude que reduziram a disponibilidade de oxigênio.
2. An automatic or manual restriction imposed on engine performance parameters such as throttle, fuel injection, or boost pressure to protect the engine from damage or excessive wear.
The truck's engine derating system automatically activates when coolant temperature exceeds safe limits.
O sistema de redução de potência do caminhão ativa automaticamente quando a temperatura do refrigerante excede os limites seguros.
3. In aviation, the practice of limiting engine thrust to extend engine life and reduce maintenance costs.
Modern commercial airlines use engine derating procedures to optimize fuel efficiency and maintenance intervals.
As companhias aéreas comerciais modernas usam procedimentos de redução de potência do motor para otimizar a eficiência de combustível e intervalos de manutenção.
Engine derating is a critical concept in both North American and Brazilian aerospace, automotive, and marine industries. In the USA and Brazil, it's essential terminology in pilot training and maintenance protocols. The practice reflects modern engineering priorities balancing performance with longevity and environmental concerns. In Brazil, the aerospace industry (particularly Embraer) frequently uses both the Portuguese translation and the English term interchangeably in technical communications.
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