Since taking over from Roberto Mancini at the Etihad Stadium last June Pellegrini has guided City to the summit of the table with 83 points and a two point advantage and vastly superior goal difference over second-placed Liverpool.
Pellegrini's side host West Ham United on Sunday and only a major shock would prevent City adding the Premier League title to the League Cup they won in March.
Free-scoring City have hit 100 league goals this season but Silva believes the manager's influence transcends results and performances.
"He's made it a happy place," Silva told www.mcfc.co.uk. "He's brought a joy and happiness; also to our style of play. We are attack-minded and we score lots of goals.
"He's made us competitive in every competition. We've gone further in them this season. He's given us that extra push and taken us one step further.
"His calmness has been obvious. He's added that to the whole club. And it really helps us at difficult moments. It's nice to have that calm attitude around you when things get tough."
After playing a starring role in City's first Premier League title win in 2012 Silva endured a subdued season last year but the 28-year-old has been back to his dazzling best in this campaign and he credits Pellegrini's attacking style as the catalyst.
"Having Manuel here has helped me personally, too. It's been really good for me. My style of play is more suited to an attacking style. He's helped me develop as a player. You always want to improve as an individual.
"It's been a good year for me. I've felt good in myself though I've suffered with this ankle problem. I'm still feeling it and I've been playing through the pain. If I get through these next couple of games, I can get some rest and be fit and ready for the World Cup."
City are expected to comfortably overcome a mid-table West Ham with little to play for but Silva was quick to reiterate City's message in the title run-in: 'fight to the end'.
After watching title rivals Liverpool surrender a 3-0 lead to draw 3-3 against Crystal Palace on Monday Silva said the team must be wary of West Ham and cannot take anything for granted.
"Everyone is saying we have it won but we still think it will be very difficult," he said. "The games now are like finals. We cannot be complacent. It was a warning to us about what can happen.
"We know if we get the win, we win the league so there is pressure but you have to enjoy these moments. They don't come along all that often."
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