Blowby is basically the leakage of compressed air-fuel mixture and burned gases past the piston rings into the crankase.

窜气，基本上是被压缩的空燃混合气和燃烧后的气体的泄漏，它通过活塞环进入曲轴箱。

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The spark plug fires, igniting the compressed air-fuel mixture which produces a powerful expansion of the vapor.

火花塞点燃压缩的空气燃油混合气，燃烧使混合气迅速膨胀。

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Worn spark plugs can't ignite the air/fuel mixture in your engine as effectively, resulting in more fuel used for a given amount of power produced.

磨损的火花塞不能够有效地将发动机中的空气燃油混合物点燃，导致产生一定的能量会消耗掉更多的燃油。

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The engines increase airflow, creating a more complete burning of the air-fuel mixture--and a more powerful vehicle.

FORBES: Magazine Article

This is possible because with the lasers, the location of the ignition can be in the center of the air-fuel mixture, rather than just the portion closest to it.

FORBES: Replacing Spark Plugs With Lasers For A More Fuel-Efficient Car

Get the fuel-air mixture a few knob twists wrong from the LOP side, and you can blow up your engine.

FORBES: Institutional Stupidity, III