To determine the number of piston rings in an Ashok Leyland 411 engine, you should consult the following:
* Ashok Leyland's official website: Their website may have technical specifications for their engines.
* Your local Ashok Leyland dealer: They would be able to provide you with the specific information you need.
* Technical manuals: If you have access to the technical manual for the 411 engine, it will contain this information.
Please note that the number of piston rings can vary depending on the specific engine model and year of manufacture.