As the plunger moves upwards in the barrel, injection will commence once the plunger has （） the spill ports and the pressure builds up.

It is important to note that the injection only takes p...

单项选择题It is important to note that the injection only takes place when the plunger is moving up the cam （）.

The high-pressure fuel opens the fuel valve and is spra...

单项选择题The high-pressure fuel opens the fuel valve and is sprayed into the cylinder in tiny droplets known as （）.

Because the timing of injection is crucial, （） mounted ...

单项选择题Because the timing of injection is crucial, （） mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.