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New Holland's fuel cell tractor
New Holland's NH2 fuel cell tractor - the first hydrogen-powered tractor to be shown by any tractor maker - finally broke cover in Turin, Italy last Friday.
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Essentially, a fuel cell works a bit like a giant battery, with a pair of electrodes surrounded by an electricity-conducting solution. Hydrogen (stored at 350bar pressure in a tank under the bonnet) is passed over one electrode, while oxygen (from the air pump) is passed over the other.
In New Holland's case, a catalyst on the surface of a membrane extracts electrons from hydrogen gas.
This allows electrons to pass through an external circuit and create electricity. Once on the other side of the membrane, hydrogen recombines with electrons and oxygen to create water.
The electric current generated then passes to a pair of electric motors, one to drive the rear and front axles and the other to run the pto and auxiliary services.
The NH2's fuel cell generates 106hp and sends the power via a splitter (from a bi-directional TV6070 tractor) to the four wheels. There's no gearbox or clutch and increasing speed simply involves generating more power from the fuel-cell. Going into reverse is easy - you simply flick the shuttle lever, which in turn reverses the fuel cell terminals.
More you can read here
Click Here
Essentially, a fuel cell works a bit like a giant battery, with a pair of electrodes surrounded by an electricity-conducting solution. Hydrogen (stored at 350bar pressure in a tank under the bonnet) is passed over one electrode, while oxygen (from the air pump) is passed over the other.
In New Holland's case, a catalyst on the surface of a membrane extracts electrons from hydrogen gas.
This allows electrons to pass through an external circuit and create electricity. Once on the other side of the membrane, hydrogen recombines with electrons and oxygen to create water.
The electric current generated then passes to a pair of electric motors, one to drive the rear and front axles and the other to run the pto and auxiliary services.
The NH2's fuel cell generates 106hp and sends the power via a splitter (from a bi-directional TV6070 tractor) to the four wheels. There's no gearbox or clutch and increasing speed simply involves generating more power from the fuel-cell. Going into reverse is easy - you simply flick the shuttle lever, which in turn reverses the fuel cell terminals.
More you can read here
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