3
CHÖÔNG III : CÔ CAÁU PHOÁI KHÍ
3.1.2 Yeâu caàu.
Caùc cô caáu phaân phoái khí caàn ñaùp öùng caùc yeâu caàu sau:
- Ñaûm baûo naïp ñaày vaø thaûi saïch, muoán vaäy xupap caàn môû
sôùm vaø ñoùng muoän tuøy theo keát caáu cuûa töøng loaïi ñoäng cô.
- Ñaûm baûo ñoùng kín buoàng chaùy cuûa ñoäng cô trong caùc kyø
neùn, noå.
- Ñoùng môû ñuùng thôøi gian quy ñònh.
- Ñoä môû lôùn ñeå doøng khí deã löu thoâng.
Ít moøn, tieáng keâu beù.
-Deã ñieàu chænh vaø söûa chöõa, giaù thaønh cheá taïo reû.
3.1.3 Phaân loaïi.
Trong ñoäng cô ñoát trong thöôøng söû duïng caùc loaïi:
-Cô caáu phaân phoái khí kieåu xupap ñaët.
-Cô caáu phaân phoái khí kieåu xupap treo.
-Cô caáu phaân phoái khí kieåu keát hôïp (vöøa ñaët vöøa treo).
![Bài giảng Kỹ thuật chung ô tô [Mới nhất]](https://cdn.tailieu.vn/images/document/thumbnail/2023/20230711/phuong5901/135x160/8241689050566.jpg)
![Bài giảng kết cấu ô tô [năm] mới nhất](https://cdn.tailieu.vn/images/document/thumbnail/2026/20260503/tungacd49@gmail.com/135x160/5271777859812.jpg)
![Bài giảng cấu tạo ô tô [mới nhất]](https://cdn.tailieu.vn/images/document/thumbnail/2026/20260424/vispacex_27/135x160/511777450048.jpg)
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