Closed cycle hydrogen engine

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What is it?An internal combustion engine which does not consume atmospheric air, thus stores the oxygen on board and recycles a working fluid, a non-nitrogen inert gas. The exhaust of the engine is nothing but water vapor, no carbon dioxide is produced, therefor there is no need for exhaust. Hydrogen engines inherently want to be closed cycle, in fact any hydrogen engine not running on a closed-cycle is essentially a waste of energy and makes no sense.#1 What is the advantage?The major advantage is the elimination of all pollutants, mainly NOx, finally making hydrogen engines fully clean, as they currently are “quasi” zero emission, producing no carbon, as hydrogen contains no carbon, but still produces high amounts of Nitrogen Oxides.The second major advantage is the ability to use hydrogen engines in a diesel cycle. Currently hydrogen cannot be used in a diesel engine due to the very high auto-ignition temperature, which necessitates a 30:1 compression ratio, making in impractical.The third major advantage is an across the board increase in engine efficiency of 25% regardless of whether a spark ignited or diesel engine is used. The reason for the increase in efficiency is due to the higher heat of the non nitrogen gas under the same compression, resulting in higher combustion temperature and greater power produced. With this increase in efficiency, a spark ignited engine can be 45% efficient, (studies have demonstrated this). A diesel engine version could be 55%, making hydrogen engines equally efficient as fuel cells, yet at a fraction of the cost.#2 Why can our engine operate on a diesel cycle whereas other hydrogen engines such as Keyou cannot?Because we can use inert gases (not nitrogen and air) which heats up to a greater degree under the same compression, allowing us to attain a temperature sufficient to auto-ignite hydrogen, without pilot fuel the way multi-fuel natural engine do.#3 How is our engine different from existing internal combustion engines?It is not different at all. The engine can either be spark ignited, or compression ignited, exactly the way current engines operate. In compression ignition versions, the fuel (hydrogen) is injected directly like conventional diesel engines, oxygen is mixed with the intake argon at a stoichiometric ratio. In spark-ignited versions, the hydrogen is injected in the intake manifold in the same fashion natural gas engines operate. The engine can be 4-stroke, 2 stroke, a gas turbine or Wankel, just about any combustion engine can operate operate on our closed-cycle.#4 Why use this over Fuel Cells or Batteries?For very simple reasons. Our goal is to remove as many pollution emitting engines from the road, our solution allows us to accomplish this affordably, and more importantly, not sacrificing performance in the process. Other alternatives, mainly batteries or fuel cells, have their advantages, but fall short in affordability, and in many cases performance. To replace the entire U.S diesel semi-truck fleet (2 million) with fuel cells (assuming a cost of $1500/kw, which is well below the current average) would cost 740 billion dollars, three quarters of a trillion dollars. To retrofit every single semi truck with closed cycle engines would cost only 26 billion dollars. Thus our technology is much more environmentally friendly, as it allows us to affordably transition from a pollution based propulsion much quicker.To replace every single semi truck in the U.S with lithium-ion batteries would cost 400 billion dollars, still too expensive for the economy to absorb.#5 Why hasn’t it been done before?Mainly because all the focus in on batteries, and if there is any interest in hydrogen, it’s almost invariably focus on fuel cells. As a result, the easiest and simplest solution was ignored. Apart from us, no one aside from Keyou Gmbh is focusing on hydrogen engines, and no one in the world yet is working on closed cycle engines.