The phrase "a key engine in" is correct and usable in written English.
It can be used to describe something that plays a crucial role or is a significant driving force in a particular context or process.
Example: "Innovation is a key engine in driving economic growth and competitiveness in the market."
Alternatives: "a vital component in" or "a major driver of".
The Ford Foundation's efforts and the Gordon-Howell report (along with a parallel effort from 1959, the Pierson Report, which included a chapter by Lee Bach) became a key engine of change in management education, illustrating the way business schools could improve.
Startup business activity, a key engine of growth in the U.S. economy, would slow without immigrant workers and entrepreneurs.
It points to early investment in mobile as a key engine for growth, with €1 in every €3 spent via its mobile apps in Spain, while in Mexico the figure rises to more than 40% of sales — and up to 60% during holiday dates.
Over the years, the Kauffman Foundation, the world's largest foundation dedicated to the promotion of entrepreneurship, has sponsored research and programs to promote entrepreneurship as a key engine of economic prosperity in the United States and abroad.
In most recoveries, residential construction, and other spending associated with housing, is a key engine of growth.
In any event, recent studies have challenged the notion that small businesses are a key engine of job creation.
Thus, it is possible to see key engines in the development of motive power or exhibits on the great medical advances made over time (the latter drawn from the museum's extensive Wellcome collection).
By naming a chief data officer, Trump also could signal his commitment to technology as a key economic engine in his new administration, and smooth over bruised feelings with Silicon Valley over his campaign promises to initiate antitrust actions against Amazon and badger Apple into making its products in the United States.
The heat transfer from the combustion gases to the cylinder walls inside a spark ignition engine is a key factor in an engine's design, due to its influence on the engine's efficiency, power and emissions.
In this work, an efficient implementation of a zero-dimensional model is described for the estimation of key engine parameters for combustion control in compression-ignition engines.
