Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which strategy compensates for purge vapour in the mixture?

  • A.Learning the vapour concentration and trimming the fuel
  • B.Nothing, since the vapour quantity is fixed and the controller therefore requires no compensation for it
  • C.Only closed loop
  • D.Estimating the hydrocarbon content of the purge flow and reducing the injected quantity by a corresponding amount

Answer: A

The controller learns how rich the purge is and subtracts the fuel accordingly. The last option describes exactly that strategy, which makes it a correct and more detailed version of the same answer. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Most errors here come from carrying a result across from a neighbouring case where it does not hold.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.