Hello, Pinguin. I'm a SF fan too and I've read quite a lot of books. Unfortunately I never found any written by an author from Chile.
Romanian SF and fiction writers are not very well known abroad though they are quite a few and some of them did wrote some quality works. I tried in vain to find a site in English or Spanish to offer you a link about them. You can try a Google search with the names I give below but Don't expect too much.
Felix Aderca - one of the pioneers - his book "Orase scufundate"(Sunk cities) 1936 is a distopy
Vladimir Colin - one of our best - more than 20 novels of different genres Fantasy, fantastic and SF
Ion Hobana - not the very best but a vluable promoter of the Romanian SF
George Anania & Romulus Barbulescu - a most valuable pair (someone compared them with A&B Strugatky) their style is definitely Hard SF and their works can be compared with Clarke . Their novel Doando is a kind of the Rama series but they also produced some very interesting original ideas.
Tudor Negoita- a few novels not that good. Something in Vogt style but with a better quality of writing and less imagination.
Rodica Bretin - a mix of fantasy and SF - she writes something like LeGuin though I like Rodica's work more, and that's not because she's Romanian.
Pavel Corut - since 1992 he wrote a series of books, with a very nationalistic touch (the "Octogon" series). Some kind of political, policier, spy fantasy and SF.
Horia Arama, Radu Nor, Gheorghe Sasarman, Vicor Anestin, etc.
There are other writers but I really cannot pick them up right now. Romanian SF suffered during Ceausescu regime since it was regarded as dangerous. I was waonder how was it in Chile during the dictatorship. A friend of mine had neighbours that were refugees from your country. It must have been really bad since people were refugiating in Romania by then.