كتب : وكالات
Michael Ballack, 4, and Frank Lampard, 87, were on target for the Blues who reach the last four for the fourth time in five years.
The home side had a perfect start as Lampard's free kick found Germany Captain Ballack, who glanced a fine header leaving keeper Volkan Demirel watching the ball bouncing into the top corner.
They were already in the semis but it was too early to say so and maintained their pressure on the Turkish giants. It could have been two as Salomon Kalou set up Joe Cole but his effort hit the woodwork.
The Blues, who already missed Petr Cech, suffered a huge blow when keeper Carlo Cudicini was taken off with an injury. He was replaced by third choice Hilario.
Chelsea wanted to score more goals to ensure their berth, but they were also very keen not concede any.
Ballack, Lampard and Claude Makalele produced a solid performance to control midfield and break Fenerbahce's attempts.
The points were sealed with just three minutes remaining, when Michael Essien got to the byline and sent a low cross into the six-meter box to Lampard who made no mistake.