MAN
While a future of battery-powered electric propulsion is already set among passenger cars, the world of heavy transport is more likely to harness the power of hydrogen, either in generating electricity or using it directly as fuel.
In this last line, the manufacturer MAN has just presented an engine capable of running without distinction on hydrogen or diesel. It develops more than 1,000 hp and, according to the brand's declaration, can emit up to 80% less CO₂.
The basis of this engine (which the brand qualifies as 'double') is the D2862 LE448 engine. It is intended for use on boats and features a twelve-cylinder V-curve to develop 1,019 horsepower at 2,100 RPM.
As stated by MAN, the only changes compared to the original engine are in the intake. An adapter allows hydrogen to be introduced directly into the injection rail and from there to the chambers of each cylinder.
According to the German manufacturer's calculations, when the engine combines diesel and hydrogen it is able to reduce its CO₂ emissions by up to 50% on average, promptly achieving reductions of 80% if it uses only hydrogen.
The first two units of this twin engine are already in service installed on the 'Hydrocat 48', a people transport vessel designed to transport workers between large ships and offshore platforms.
Although MAN does not seem to have plans to transfer this technology to its truck subsidiary, other manufacturers, such as the American Cummins, already offer engines suitable for running on hydrogen and other fuels. So it appears that so-called 'agnostic engines' are gradually gaining ground as a method of decarbonising heavy transport.
Among cars, however, the story is quite different: only Toyota explores this path through its competition team in the Japanese Super Taikyu championship.
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