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Motor Diesel Sem Egr
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ISBN10: 6209951139
ISBN13: 9786209951138
Publisher: Edicoes Nosso Conhecimento
Published: May 9 2026
Pages: 68
Weight: 0.23
Height: 0.16 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786209951138
Publisher: Edicoes Nosso Conhecimento
Published: May 9 2026
Pages: 68
Weight: 0.23
Height: 0.16 Width: 6.00 Depth: 9.00
Language: Portuguese
Este livro apresenta a ideia do autor de aumentar a eficiência da combustão dos motores diesel com algumas modificações no motor e no sistema de escape. Sabe-se que a combustão num motor de combustão interna só será boa se queimar combustÃvel e ar, numa determinada relação ar/combustÃvel (aprox. 14,7:1), sem mistura de gases de escape do ciclo anterior. Através do EGR, o sistema atual perturba efetivamente esta relação de combustão e apenas aumenta o número de partÃculas que entopem o DPF ainda mais rapidamente. A principal inovação é a eliminação da válvula EGR no sistema de escape, cuja função era reduzir as emissões de NOx nos motores diesel, porque o retorno de uma parte dos gases de escape diminui a temperatura de combustão no motor. Uma temperatura de combustão mais baixa significa uma redução das emissões de NOx do motor de combustão interna. A segunda alteração consiste em reduzir a taxa de compressão dos actuais 16-19, mais comuns, para 15, 14 ou 13. Esta alteração também resulta numa temperatura mais baixa no final do curso de compressão e, por conseguinte, numa temperatura de combustão final mais baixa no motor de combustão interna, com uma redução da quantidade de combustÃvel injetado por ciclo.
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