- Joined
- Oct 28, 2021
- Threads
- 10
- Messages
- 132
- Reaction score
- 178
- Location
- Atlanta, GA
- Vehicle(s)
- Gulfstream / Grumman AA5B
- Engine
- 2.5L Hybrid
There is a gigantic gulf between emissions used to charge EV and gas-hybrid & gas vehicles. You are correct that getting emissions systems up to operating temperature is a problem.They also run on mostly coal and natural gas (think where electricity is generated). I understand that the emissions are also largely over stated as they are based on the emissions of an engine at normal operating temperature. Quite often, hybrid engines are not operating that way because they start and stop. Over short distances, the engine does not, or takes a long time, to reach temperature and therefore have higher emissions. Has anyone heard this before?
To put this in super simple terms: anything with a radiator & exhaust is a problem. Gas engines are only about 25% to 40% efficient at capturing the heat from burning fuel, using that to pump down a piston; converting that to chemical energy to mechanical energy that turns a wheel. All the rest goes out of the vehicle as excess heat, out the exhaust and radiator.
We try various ways to recapture that lost energy. Turbochargers are trying to capture heat energy (in the form of hot expansive gasses) and put that back in as boost on the intake side. Our Hybrid just captures heat energy (translated into mechanical energy and then electrical energy) as well as energy that would otherwise be wasted as heat off the brakes.
That's the radiator and cooler for the Air Conditioning used in a 1,100 HP Tesla Model S that weighs nearly 5,000 lbs, does 0 to 60 in 1.9, the Qtr Mi in 9 seconds (faster than a quad turbo'd V12 Bugatti that costs $4.3m) and runs 200 miles per hour ... point being, Electric Cars, even crazy fast ones with big air conditioning needs, do not waste heat.
The lack of waste heat is why the Tesla are 98.6% to almost 100% efficient.
Even if they are powered by a coal plant, they are so efficient at using that power that their total emissions are a fraction of what our Hybrids produce.
Then if you measure gas from the source, it takes about 18% of the total energy of the gas to actually deliver it to us, through the supply chain, to the pump.
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