Yes, k, w, and y were added for foreign loan words. Embraer is an abbreviation of "Empresa Brasileira de Aeronáutica" which doesn't contain any foreign words. I

Yes, k, w, and y were added for foreign loan words. Embraer is an abbreviation of "Empresa Brasileira de Aeronáutica" which doesn't contain any foreign words. I wanted to point out that it's unlikely that a native speaker would add a gratuitous "y". It's a common letter in Spanish and most people are surprised that it's not used in Portuguese.