The latent heat of vaporization of water is 2270 J / kg. (blog.hotwhopper.com)
High torque from direct - injection The latent heat of vaporization generated by the MZR 2.3 L Turbo when atomized fuel is injected directly into a cylinder at pressures of up to 11.5 MPa reduces the temperature in the combustion chamber (in - cylinder cooling effect) and improves air - fuel mixture charging efficiency. (ausmotive.com)
In both cases the higher octane and higher heat of vaporization of ethanol are utilized to allow higher compression to gain efficiency. (news.pickuptrucks.com)