Torturing my Technology English class with a MidTerm mostly on the IC engine.
I've given them this URL as reference for preparation, and will base some of the questions (probably mostly vocab gap fill) on a reworking of it .
http://www.fesconstruction.co.uk/KS3/Cams/stages_of_engine.html
However, I've just noticed that the Intake Stroke diagram (top one in the set) seems wrong, or at least misleading, since the piston is moving upward.
If the intake valve was open at the point shown that would push some mixture back up the intake path, though this movement would be quickly reversed.
Does this actually ever happen?
If it IS actually wrong I might put it in as a "critical thinking" question, probably just for bonus points since these students aren't very big on critical, or indeed any, thinking.
I've given them this URL as reference for preparation, and will base some of the questions (probably mostly vocab gap fill) on a reworking of it .
http://www.fesconstruction.co.uk/KS3/Cams/stages_of_engine.html
However, I've just noticed that the Intake Stroke diagram (top one in the set) seems wrong, or at least misleading, since the piston is moving upward.
If the intake valve was open at the point shown that would push some mixture back up the intake path, though this movement would be quickly reversed.
Does this actually ever happen?
If it IS actually wrong I might put it in as a "critical thinking" question, probably just for bonus points since these students aren't very big on critical, or indeed any, thinking.