EU vote to ban all sales of combustion engine vehicles by 2035

Re:EU vote to ban all sales of combustion engine vehicles by... by wongarsu on Monday June 13, 2022 @07:51AM (#31724131)

Gasoline engines in road-legal cars have about 20-35% thermal efficiency. Just making the engine bigger and not caring about engine weight (like in ships or power plants) allows you to bring efficiency up to about 55%. Electric motors (as used in electric cars) are about 90% efficient.

Of course you lose some charging and discharging the battery, in the charger itself and in transmission losses. But just eyeballing it it seems like the power plant should come out ahead as long as it isn't too far away.

[ Parent | on HN ]

Re:EU vote to ban all sales of combustion engine vehicles by... by breadloaf on Monday June 13, 2022 @10:14AM (#31725877)

> Electric motors (as used in electric cars) are about 90% efficient.

But where is efficiency of electricity transmission, transformation, battery charging and battery discharging?

[ Parent | on HN ]

Re:EU vote to ban all sales of combustion engine vehicles by... by namlem on Monday June 13, 2022 @12:35PM (#31727876)

Natural gas power plants are about 50% efficient. Transmission is about 95%. I believe transformer efficiency is also typically about 95%. Charge+discharge efficiency is also about 95%. Electric motors are about 85%. In total you end up with about 36%, which is at the upper end of the typical 25-35% efficiency of ICEs.

[ Parent | on HN ]