Different Style Head
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From: Leesville, Louisiana
Vehicle: 2001 Hyundai Tiburon
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QUOTE (DTN @ Nov 16 2008, 04:14 PM)
^^ how is that like a rotary at all? It's a dynamic compression chamber. it also has no risk of bending a valve if the timing belt breaks.
Not rotary engine (like a Wankel)... Rotary valves.
http://www.coatesengine.com/technology.html
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How it works?
This new concept eliminates the most complicated mechanism in the combustion engine: the head and valve train.
The idea is to replace the camshaft with a crankshaft and replace the valves with pistons. By doing this, the inventor, Andrew Feliks, created a new and very simple four stroke engine.
This new concept eliminates the most complicated mechanism in the combustion engine: the head and valve train.
The idea is to replace the camshaft with a crankshaft and replace the valves with pistons. By doing this, the inventor, Andrew Feliks, created a new and very simple four stroke engine.
Basically the same as a normal engine, just using pistons instead of valves and a crankshaft instead of 2 valves. I guess it eliminates the springs and lifters... Doesn't seem too revolutionary (no pun intended) to me.
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With this design there is an enormous amount of air intake into the burn chamber because the intake port is large and valves are not obstructing air flow.
At the moment of the ignition, the charge, forced by piston valves, flows around the "bridge" between the "valve cylinders" which causes highly turbulent flow and rapid mixing.
This phenomenon improves fuel vapor mixing with air, which is an excellent solution to the combustion unevenness issue in all engines. The turbulent mixing phenomenon creates high fuel efficiency in diesel engines. The combustion then creates fewer, less polluting byproducts. The fuel mixture could also be much leaner thus consuming less fuel.
By changing angles between the crankshafts, the compression ratio can be altered - creating better fuel efficiency.
If a total stop of the timing crankshaft would occur while the engine was working, the engine would not be damaged. With traditional timing mechanism this would probably cause serious damage. Without a doubt, this construction increases the reliability of the engine.
The design of the new engine is different also - there is no conventional cylinder head, the main block being divided into two parts. It could be constructed as a single block, the power can be delivered from the timing crankshaft,change compression ratio etc.
At the moment of the ignition, the charge, forced by piston valves, flows around the "bridge" between the "valve cylinders" which causes highly turbulent flow and rapid mixing.
This phenomenon improves fuel vapor mixing with air, which is an excellent solution to the combustion unevenness issue in all engines. The turbulent mixing phenomenon creates high fuel efficiency in diesel engines. The combustion then creates fewer, less polluting byproducts. The fuel mixture could also be much leaner thus consuming less fuel.
By changing angles between the crankshafts, the compression ratio can be altered - creating better fuel efficiency.
If a total stop of the timing crankshaft would occur while the engine was working, the engine would not be damaged. With traditional timing mechanism this would probably cause serious damage. Without a doubt, this construction increases the reliability of the engine.
The design of the new engine is different also - there is no conventional cylinder head, the main block being divided into two parts. It could be constructed as a single block, the power can be delivered from the timing crankshaft,change compression ratio etc.
