text: This is a list of piston engines developed by Nissan Motors.
  Engine naming convention
  Nissan uses a straightforward method of naming their automobile engines.
  The first few letters identify the engine family.  The following digits are the displacement in deciliters.  Finally, the trailing letters encode the main engine features, and are ordered based on the type of feature. Below is a list of encoded letters, and the engine features they represent. Make note, the first few letters in the engine name that identify the engine family have nothing to do with these encoded letters for the engine features, and should not be confused as such.
  The encoded letters that represent engine features follow a specific order and not all features are necessarily listed all of the time. The basic, common features follow this general order: