In a port-helix PLN which of the following best describes plunger geometry?
A) The width of the plunger.
B) The length of the plunger.
C) The physical shape of metering recesses machined into the plunger.
D) The manner in which the plunger acts on the delivery valve.

Question

Quizplus · Accepted Answer

Plunger geometry in a port-helix PLN refers to the physical shape of the metering recesses machined into the plunger. This determines the amount of fuel that is delivered to the injection nozzle for a given plunger stroke. The width and length of the plunger are important as well but do not necessarily fall under the category of plunger geometry. The manner in which the plunger acts on the delivery valve is also important but falls under the category of delivery valve design, not plunger geometry.

In a Port-Helix PLN Which of the Following Best Describes