The Six-stroke Engine

holy shit!! that makes so much sense, plus the water cools the engine and allows for greater air density therefore you can get even more air and fuel in to the combustion chamber making for a bigger bang. that's bloody good that is! hope shit works out for this guy.

i'm pretty sure it will is cos it's in oil companies best interest to support it due to the fact it still needs petroleum to run - *cough* hydrogen powered cars aren't here yet cos it makes the need for cude oil near obsolete *cough* *cough*.... too bad for the manufacturers of coolant and radiators...

once again, that's wikid!

one question, if the engine doesn't run hot then what'll be used for the heater?? while summer in oz is toasty winter can get pretty damn chilly...

meh
thats never gonna amount to anything
still got to carry heaps of water
rekon the pollution levels on the roads would increase

if the engine only runs luke warm , how does it generate the steam?

the heat from the explosion turns the water to steam, thus the engin doesnt need to be warm, as long as the heat from the explosion is there.

Gotta say it's quite a good idea to harvest the excess heat wastage from a traditional ICE...

Now what about using electrics to do something similar totaly eliminating the use of fuel?

no shit sherlock

the engine has no cooling system

surely to turn water to steam you would need at least 150degrees to achieve sufficient ferocity of expansion to propell the motor
it is stated that the exterior of the engine is warm to the touch
are you saying( with the conductive properties of metal )-that the inside 5mm depth of metal reaches this temperature, if not greater
and retains sufficient heat energy to vaporise the water instantly
while this heat is not transmitted to the external layers of metal


not to mention the hardening and brittling affect of rapidly heating and cooling metals
which often leads to cracking

This happens at such a quick rate that the rate of heat transfer is but a fraction of a second, and thats all the time it needs to heat up the surface to sufficient temperature temporarily till the water hits the surface, at which time it is instantly vaoporised to 1600 times it's normal size. The explosion of the fuel causes the surface of the metal to instantly draw in heat, at large amounts, however does not need to penetrate deep, but only stay on the surface until the water hits it which is only a fraction of a second away. It is very possible. And he even said it worked on a one cylinder engine he built, so how can u say it's not possible?

And because it only works on the surface of the metal, it does not attract heat deep into the metal, so no cracking can occur in the first place. It makes sense.

secondly imagine trying to drive a car that never warms up.......not very efficient

have to run rich

I believe everything I read

One of the first things we get taught in heat transfer is regardless of how long a transfer takes, if your going to be doing it many, many times, the stresses will remain pretty much the same. Also, with a one cylinder engine you have MUCH better heat loss to the engine bay when compared to an engine with multiple cylinders

Other than that, it seems like a really good idea, i hope it works

see the other things that he would have to work on is, when the motor is turned off, 1) with yes the water beeing used to cool down, but if cooled down to quick, thats when cracking ocurs. 2) water or steam in any engine is not good cars, or motor which r not used for as while, surface rusting will start to take effect, there for leaving it on the sides, therefore damanging the piston ring, therefore overtime wearing on there bores, and losing to much compression 3) how the effects r on the spark plug

in the end water-steam=rust of some dregree

The rust problem would be especially bad because of the joining methods they would have to use, and because most of it would be crevice corrosion in the welds (and thats extremely hard to sound for and discover), it really would lead to catastrophic failure. And with pressurised steam, it would not be pretty

since the engine only raises in temperature by a up to 40 degrees, instead of a couple of hundred, there is less chance of permanent damage due to massive ammounts of expansion/contraction. normal ICE's loose efficency and a great deal of energy through heat. if you don't know how the 3 piston steam engine works it uses the same principles except instead of having a seperate boiler each cylinder becomes the boiler due to the previous power stoke... go the steam powered combustion engine!

ROFL @ Everyone becoming an expert on the 6 stroke cycled engin in the space of 1 day.... no disrespect intended cos everyone's bringing up very valid points, it's just an observation

yer, but there is a lot of pro and cons with this applicaton to convert is to a 4,6,8 cyl motor

the good old suck, squies, bang, blow engine

or shal in be called suck squise bang blow steam rust lol

asked my old man about this (he is an engineer) and he reckons that concept of the 6 stroke engine has been around for decades. Clearly nobody has been able to come up with an efficient enough design to make this commercially viable.

sorry?

so what temperature does the fuel burn at?
how does 40 degrees create steam

Agreed! this engine while a fun project will never see comercial production, for one you would have to carry a tank of water of similar capacity to fuel if its using fuel for one combustion stroke and water for the other. As joker and a few others stated the water in the combustion process may cause rust problems and in a cast bore rust happens quite quickly. Water can be good for turbo cars when detonation is a problem as long as it is mixed with fuel or methanol etc. As for having a whole compression stroke with just water, I doubt it would last a long time as the steam would wash the oil off the cylinder walls and cause excess wear on rings/pistons/valve guides. Its a pretty neat project but not for normal use its just not practical.