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分析汽油机和柴油机的原理和优缺点。

问答题
2022-01-02 16:37
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正确答案

汽油机:利用化油器将汽油和空气混合后吸入气缸内,用电火花强制点燃混合气体使其燃烧后产生热能做功。其优点是转速高、质量小、噪音小、起动容易、制造维修成本低。缺点是油耗高、排放差。
柴油机:用喷油器将柴油高压喷入汽缸,通过压缩气体后自燃做功。优点是压缩比高、油耗小、排放尾气污染小。缺点是转速低、质量大、制造维修成本高。现在通过改进,也有轿车使用柴油机的。


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