That means a V6 turbo formula will come into force in 2014, replacing the four-cylinder units intended for 2013. However, the FIA stressed that energy-recovery systems are still part of the new formula.
Although the FIA has given no details, the V6 rev limit is expected to be 15,000 rpm.
A short FIA statement said: "Following a fax vote by its members, the World Motor Sport Council has ratified the engine regulations recently drawn up in consultation with the main stakeholders in Formula One. The new powerplant will be a V6 1.6 turbo unit with energy-recovery systems. This new formula will come into effect as from the start of the 2014 FIA Formula One World Championship season."