Mazda's Miller Cycle engine.
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From: Medina TN
Mazda's Miller Cycle engine.
I test drove a 2000 Mazda Milennia a few days ago for a relative and was left scratching my head after looking under the hood. I was so confused at what I had witnessed that I spent an hour on the internet researching it.
The Miller cycle engine was invented in the 1940's and Mazda is one of only a few manufactures that jumped on the bandwagon and used it. I totally understand why many didn't use it, mostly due to production cost, but this could help out the "fuel crisis" in a large way if this technology were more widely used IMO.
http://en.wikipedia.org/wiki/Miller_cycle
I just threw this out there for kicks and giggles and will have to say that that little car will fly. If my MIL don't buy it, I will have to look into it.
Sorry for the WIKI reference, it's the first that I came across...
The Miller cycle engine was invented in the 1940's and Mazda is one of only a few manufactures that jumped on the bandwagon and used it. I totally understand why many didn't use it, mostly due to production cost, but this could help out the "fuel crisis" in a large way if this technology were more widely used IMO.
http://en.wikipedia.org/wiki/Miller_cycle
I just threw this out there for kicks and giggles and will have to say that that little car will fly. If my MIL don't buy it, I will have to look into it.
Sorry for the WIKI reference, it's the first that I came across...
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Joined: Nov 2004
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From: sunny fla sometimes windy
There is also a 6 cycle motor out there that utilizes the waste heat, since most of the
fuel that is burnt is used to make heat that goes out the exhaust and radiator. The
motor actually adds two strokes that are basically turning the motor into a steam engine
and it dumps the steam that is created from the exhaust heat to push the piston
down on the 5 stroke and then exhausts it on the 6th, then the traditional 4 strokes
are repeated. It wouldn't be a bad deal to use a steam engine in conjunction to spin
the valvetrain thereby letting the motor only spin the crankshaft and a seperate
steam powered engine(maybe 2 cylinder) that is run from waste heat could be spinniing
the camshaft and the waterpump and othe accesories. That alone would save a bit
of the motors hp and would be that much more to go to the wheels, Of course the
weight would have to be kept low but a small steam engine with a big flywheel would
have quite a bit of torque.
Of course a two stroke is more efficent then a 4 stroke since it doesn't have to turn
a cam and with modern computer controls, efi, and ceramics and alloys a two stroke
can be developed that has a closed oil filled crank case(no oil in gas) a supercharger
or a turbo to force the air in. The marine industry has a lot of tricks that are making
them pretty efficent and less of an emission pig.
fuel that is burnt is used to make heat that goes out the exhaust and radiator. The
motor actually adds two strokes that are basically turning the motor into a steam engine
and it dumps the steam that is created from the exhaust heat to push the piston
down on the 5 stroke and then exhausts it on the 6th, then the traditional 4 strokes
are repeated. It wouldn't be a bad deal to use a steam engine in conjunction to spin
the valvetrain thereby letting the motor only spin the crankshaft and a seperate
steam powered engine(maybe 2 cylinder) that is run from waste heat could be spinniing
the camshaft and the waterpump and othe accesories. That alone would save a bit
of the motors hp and would be that much more to go to the wheels, Of course the
weight would have to be kept low but a small steam engine with a big flywheel would
have quite a bit of torque.
Of course a two stroke is more efficent then a 4 stroke since it doesn't have to turn
a cam and with modern computer controls, efi, and ceramics and alloys a two stroke
can be developed that has a closed oil filled crank case(no oil in gas) a supercharger
or a turbo to force the air in. The marine industry has a lot of tricks that are making
them pretty efficent and less of an emission pig.
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