ระบบไอเสียเครื่องยนต์

Posted on : 05-11-2012 | By : Author | In : การทำงานของเครื่องยนต์

ระบบไอเสียทำหน้าที่รวบรวมไอเสีย ลดเสียงดังไอเสีย และทำความสะอาดไอเสียจากกระบอกสูบเครื่องยนต์ แล้วปล่อยสู่บรรยากาศ รูปที่ 11.22 แสดงส่วนประกอบของระบบไอเสียของเครื่องยนต์กระบอกสูบเรียง รูปที่ 11.23 แสดงระบบไอเสียคู่สำหรับเครื่องยนต์กระบอกสูบวี

ระบบไอเสีย

ไอเสียไหลจากท่อร่วมไอเสียเข้าสู่ท่อไอเสียและต่อไปยังอุปกรณ์กำจัดก๊าชพิษ (catalytic converter) ซึ่งเปลี่ยนมลพิษในไอเสียไปเป็นไอนํ้าหรือก๊าชอื่น ๆ ที่ไม่เป็นอันตราย

หม้อพักมีช่องผ่านเรียงต่อเนื่องกันซึ่งไอเสียต้องไหลผ่าน หม้อพักช่วยลดเสียงดังของไอเสีย ระบบไอเสียบางระบบมีหม้อเก็บเสียงต่ออยู่ในระบบด้วย และท่อไอเสียบางอันทำจากท่อซ้อนกันเป็นชั้น ๆ จำนวน 2 หรือ 3 ชั้น เพื่อลดเสียงดังของเสียงวงแหวน (ringing sounds) ที่พ่นออกจากท่อไอเสีย โครงสร้างต่างๆ ของหม้อพักดูได้ดังรูปที่ 11.24

บทความอื่น ๆ ที่น่าสนใจ:

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