00:14 Yamaha and Toyota have developed a hydrogen-powered V8 engine based on the Lexus RCF's 5-liter V8 engine, emitting only water as its exhaust, eliminating carbon emissions.
01:10 Comparing the Toyota Mirai (hydrogen fuel cell vehicle) and the Lexus RCF (hydrogen V8 engine converted from gasoline), both technologies exist, but the hydrogen V8 engine has much less range due to hydrogen's storage limitations.
02:32 Filling the 17.4-gallon gasoline tank of the Lexus RCF with hydrogen would only give the hydrogen V8 engine a range of 50 miles, or 25 miles under aggressive driving, which falls far short of the desired 300-mile range.
04:19 To achieve a 300-mile range, the hydrogen V8 engine would require about 21 five-gallon buckets of hydrogen storage, which is more significant than the entire trunk space of the Lexus RCF.
08:12 Liquid hydrogen can store 75% more hydrogen in the same space as gaseous hydrogen at 10,000 PSI, but storing liquid hydrogen poses practical challenges due to extreme cooling requirements and subsequent fuel loss over time.
12:58 Fuel cells, rather than combustion engines, are the most viable method for using hydrogen as a fuel source for vehicles, offering a reasonable range (e.g., 300 miles) with significantly fewer storage constraints.
14:23 Hydrogen V8 engines face significant challenges, including space requirements, safety concerns, high costs, and lower range, making fuel cells a more practical option for hydrogen-powered vehicles.
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- https://www.youtube.com/watch?v=vJjKwSF9gT8
