So, a new engine rather than a conversion, which would have been more interesting.
Less torque than a diesel, let alone electric which can deliver more torque.
Lean fuel-air mix to reduce NOX, at the cost of compression ratio (and some torque).
They've effectively ended development on their diesel engines.
Still have the noise and vibration of a combustion engine. Although slightly changed.
100kg of hydrogen in a bowser, he thinks 3,000 litres of volume.
Efficiency wise Fuel cells and electric motors are generally twice as efficient as diesel.
$3 a kg (needed for price parity with Diesel )isn't forecast in the near future. Prices of $5-8 in 2030 are expected but that's not pump price, that's the equivalent of well prices. At the moment it costs an insane $33 a kg at the pumps, up from a previous price of $15. But even at cost parity with Diesel it's twice to three times more expensive than a battery electric.
6 kg of hydrogen a day is roughly similar to 200kWh of electricity (33kWh per kg). That's not a huge battery these days. Even if it were swappable batteries already exist and are for sale for farm equipment.
At current real world prices it's five to ten times as expensive as diesel to run on dirty hydrogen.
It's an impressive technical achievement, like making a steam powered car. Impressive but ridiculous, it's like blackberry insisting that they just need a better keyboard to beat the iPhone.
It's taking a fuel cell vehicle and making it worse.