要说柴油机和汽油车最大的区别，那就是燃烧方式，汽油机是预混合的火焰传播燃烧，阶段包括进 气→压缩（油气混合物）→点火燃烧（定容燃烧）→排气；柴油机主要是扩散燃烧，进气（纯空气）→ 压缩（纯空气）→喷油自燃（定压燃烧）→排气。 柴油机与汽油机最根本的区别在于点火方式，柴油机采用压燃式（CI Engine，Compress Ignition Engine）点火，而汽油机则依赖火花塞点燃（SI Engine，Spark Ignition Engine）。 柴油机工作时，只吸入空气并将其压缩，随后喷油器将柴油以雾状形式喷入高温高压的空气中，柴 油在压缩空气产生的高温下自行燃烧。这种点火方式决定柴油机不需要复杂的点火系统，如火花塞和高 压线圈。汽油机则不同，它吸入的是空气与燃油的混合物，在压缩冲程接近尾声时，火花塞产生电火花 点燃混合气。 由于柴油机依靠压燃式燃烧，因此燃油喷射压力极高，高的达到2500bar，而汽油机目前量产的第 五代EA888搭载的500bar喷油压力已属"天花板"，对比柴油机的供油压力是"小巫见大巫"。同时，柴油 机由于没有点火系统，省去火花塞等部件的定期更换，总体维护成本较低。但柴油机的喷油嘴和 ...

Group 1 - The article highlights the increasing safety concerns related to gas stoves, with 27 deaths and 158 injuries reported in gas safety incidents in 2024 alone, prompting the need for technological innovation in gas stove safety [1] - The new national standard GB 30720-2025, effective from March 1, 2026, sets higher requirements for key safety indicators such as thermal efficiency and flameout protection devices, driving industry upgrades and technological advancements [1][6] - The introduction of mandatory flameout protection devices since 2007 has significantly improved safety, automatically cutting off gas supply within 60 seconds if the stove accidentally goes out [2][4] Group 2 - The market is witnessing a shift towards high-end gas stoves with innovative features like timing devices, which allow users to set cooking times and automatically shut off the gas, addressing safety concerns while enhancing convenience [3][4] - The new energy efficiency standards require first-level energy efficiency products to achieve a thermal efficiency of 70%, while second-level products must reach 64%, pushing manufacturers towards technological breakthroughs [6][7] - The implementation of the new standards is expected to lead to a consolidation in the gas stove market, favoring brands that meet the new requirements and possess core technological capabilities, while those that do not comply may be eliminated [7]