And second, modern car engines shut off fuel injection or idle when decelerating.

第二，现代汽车引擎在减速时会停止注入燃或进入空转。

That makes it harder for moisture to build up in the tank, which can damage your vehicle's fuel injection system.

这样水分就不易积聚，从而损坏汽车燃喷射系统。

They are fuel supply and fuel injection systems.

它是燃供给系统和燃喷射系统。

The operation between the two fuel injections is called a working cycle.

两次燃喷射之间称为工循环。

But the new millennium brought advances in materials, manufacturing, and computing technology, including systems which could manage fuel injection with incredible precision.

但新千年带来了材料、制造和计算技术进步，包括可以以令人难以置信精度管理燃喷射系统。

The diesel engine exhausts black smoke because of the troubles in the fuel injection system, such as bad fuel oil quality, poor fuel atomization.

柴机冒黑烟是由于燃喷射系统问题，例如燃质量差、燃雾化不良等原因造成。

Old cars have carburetors; new cars have fuel injection systems. These are the things that control how much gas is burnt, and how much air mixes with the gas to get the proper amount of burn.

旧车有化器；新车有燃喷射系统。 这些是控制燃烧多少气体东西， 以及多少空气与气体混合以获得适当燃烧量。