The regulator holds a constant air-fuel ratio from cold start-up through hot air operation.
调节阀能够保证从冷启动到预热空气一直保持恒定的空气-燃料比例。
When direct injection diesel engines are warmed up after running from cold start, they will emit a lot of blue smoke containing unburned hydrocarbons (HC) which are harmful to people and environment.
柴油机在起动后的暖机过程中排出大量含有未燃碳氢(HC)的蓝烟，给人类健康和社会环境都带来极大的危害。
When direct injection diesel engines are warmed up after running from cold start, they will emit a lot of blue smoke containing unburned hydrocarbons (HC) which are harmful to people and environment.
柴油机在起动后的暖机过程中排出大量含有未燃碳氢(HC)的蓝烟，给人类健康和社会环境都带来极大的危害。
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