My engine stops when operating at low speed for a while

What is your question?

My Suzuki Vitara, 4-cylinder , 2.0 when the engine is running for a while in low revolutions suddenly stops and does not start up after about 15 minutes. At the time of the problem when I try to start the engine pulls escape explosions . If for a moment I can start it does so much failure that increases as you accelerate . After a while I started off normally. Someone who has an experience like this? thanks