Not much in the way of pictures and videos from the ACT Expo.
During the test drive, the most interesting fuel cell vehicles for my taste were the Hino and Kenworth/Toyota.
Found a few good pictures of the Kenworth setup!
It’s frustrating when you can’t get proper specs to compare.
It seems that 2x Toyota FuelCell stacks are installed in both.
The Kenworth’s own peak power was apparently previously reported as 560hp.
The text states the following:
The dual fuel cell modules, which are a key component of an overall FC kit, weigh approximately 1,400 pounds and can deliver up to 160kW of continuous power. The FC kit also includes a high voltage battery, electric motors, transmission and hydrogen storage assembly from top-tier suppliers. Toyota will also offer its powertrain integration expertise that will help truck manufacturers adapt these emissions-free drivetrain systems to a wide variety of applications in the heavy-duty trucking sector.
So, the fuel cell output is continuously 160kW. This doesn’t say how much power is used while driving; it seems to be just the cell’s output, not including the electric motor? For example, Hyzon states a continuous power of 320kW (electric motor) in its catalog, with a cell output of 120kW. It’s hard to make sense of these figures.
Source: Toyota to Assemble Fuel Cell Modules at Kentucky Plant in 2023 - Toyota USA Newsroom
Video from the scene:
The entire kit includes a high-voltage battery that acts as an energy buffer, electric motors, a transmission, and hydrogen storage tanks, and the fuel-cell modules themselves weigh about 1,400 pounds, according to Toyota.
From the source: Toyota will make hydrogen fuel-cell modules in the US starting in 2023
The fuel-cell stacks, in modular form, will be part of a kit that will essentially replace a traditional heavy-duty diesel engine in big Class 8 semi trucks. The system is capable of delivering up to 160 kw (214 hp) of continuous power
From this, one might again understand that the power available in the entire system is 214hp, which certainly won’t move a Class 8 combination anywhere.
Then, pictures at the end. Bad pictures of the Hyzon, but you can still see something.
Toyota:
And Hyzon:
Here’s a picture of the old cell setup
In this new setup, there seems to be a new compressor model (pipes are different from previous pictures, and the compressor is configured differently). It’s a shame the type plate and manufacturer are covered.
Toyota’s package fits in the engine bay and under the driver, and Hyzon’s package is behind the cabin, under the tanks. I can’t say what all equipment is crammed under the hood.
Edit:
From Daimler in the video at 4:30-> good info related to this.
So, when the cell output exceeds the need, energy is stored in the battery and assisted by the electric motor, e.g., on an uphill climb.
