Hello student some of the best private engineering college are as mentioned below -
1)Birla institute of technology
2)SRM institute of science and technology
3)Manipal Institute of Technology
4)Vellore institute of technology
5)RV college of engineering, Banglore

For more updates refer to the link mentioned below - https://engineering.careers360.com/colleges/ranking/top-private-engineering-colleges-in-India