The flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving.

火焰探测器用于监测燃气火焰、黄色或蓝色燃油燃烧火焰以及点火火花的校对。

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The team has already created an ignition system in which a laser travels through fiber-optic cables to optical spark plugs.

这个研究组已经研制出一种激光通过光纤到达火花塞的点火系统。

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First he carefully unscrewed the steering wheel cover, revealing the guts of the ignition system. He tore away frayed wires, stripped them to expose enough metal to cause a spark.

首先，他仔细地拧下方向盘盖，露出里面的点火系统，借着撕开磨损的电线外皮，露出足以点火的金属线芯。

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In most spark ignition engines, a thermodynamic cycle occurs when the piston completes four strokes within the cylinder, and the crankshaft completes two revolutions.

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Both Otto cycle(spark ignition) and Diesel cycle engines(compression ignition) engines can be made to run on multiple fuels(petroleum, ethanol, natural gas) The cost is only nominally more than single fuel engines.

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Instead of sparking the ignition when the piston is close to top dead center (when the air is compressed), that spark occurs as the piston is pulling away, when the air pressure is at its most turbulent, creating much faster ignition and more power.

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