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Since entering Formula 1 in 1994 as an engine supplier, Mercedes has powered cars to an impressive total of 149 Grand Prix victories, achieved by teams such as McLaren, Brawn, and its own factory outfit. Notably, 59 of these wins have occurred since the 2014 season, when Mercedes’ 1.6-liter turbo V6 engine emerged as the superior option among the three available engines. This success is attributed to its innovative design and noteworthy horsepower advantage. Last year, Mercedes engines continued to lead the pack, but the current season presents a different outlook, as rival Ferrari has captured four wins so far, with another win anticipated this weekend in Singapore.
On Wednesday, Mercedes took important steps to ensure they maintain an edge in engine performance. A report from Motorsport revealed that during a dyno testing session, Mercedes engines achieved over 50 percent thermal efficiency.
The significance of thermal efficiency in Formula 1 has been underscored by various regulations, including limited fuel loads, a ban on refueling, and a cap on fuel flow. These rules were established in response to past fiery refueling incidents and to prevent teams from employing excessively powerful engine settings during critical moments, like overtaking or defending against competitors. The risks posed by high closing speeds between cars have been acknowledged for decades, leading to the enactment of the “107 percent rule” in 1996, which was intended to prevent slower cars from racing alongside those competing for championship points.
In simple terms, thermal efficiency in internal combustion engines refers to how effectively the engine converts the energy it receives into usable power, rather than losing it as heat. Many conventional car engines operate at around 20 percent efficiency, as cited by Green Car Reports, which indicates that Mercedes’ current Formula 1 engine operates at about 150 percent greater efficiency than a typical commuter vehicle engine.
While we’re not experts on thermodynamics, those curious about thermal efficiency can delve deeper by watching a video from Engineering Explained, linked below. Take it away, Mr. Fenske..
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