And that’s the first major change… we will no longer talk about engines. Instead, we will refer to “power units.” The reason for this is actually quite simple. The engine, as it exists now, will cease to do so. While each car currently has a limit of eight engines for the season, in 2014 this limit will drop to five “power units,” to include not just the traditional block we know as the engine but “all ancilliaries, any energy recovery systems and all actuation systems.” So, for the avoidance of doubt, a failure on any element of the “power unit” which requires a change, means that’s one of your allocation of five.
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KERS will no longer exist, replaced instead by ERS (Energy Recovery System) which will harvest both kinetic and thermal energy. And here’s where it gets very cool indeed. ERS will produce approximately twice the horsepower and will be available for five times as long as KERS. So while KERS currently only provides 80hp for 5.7 seconds, ERS in 2014 will deliver 161hp for 33.3 seconds.