Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

   Interesting design at the link below of a 4 stroke engine without valves.  The valves are replaced with two pistons which act somewhat like reed gates to control input and exhaust flow to ports similart to a 2 stroke.

http://www.new4stroke.com/

   I think Borat has missed the qualifier in what I’ve said.

 

    “Reducing the exhaust temp in any engine would be an advantage even funny car engines”

 

this part…..

                            “if they could maintain performance”.

 

   The engine example Borat mentioned is a design where higher heat improves performance for that application.  Just magically lowering the exhaust temp in some way would impair performance and not what I qualified.

 

   I think Boarts understanding of what I said is that a lower exhaust temp would to be desirable because it would degrade performance and they want temps high for extra umph.  That’s not what I said at all.  That would be throwing a wrench into the design.

 

    What I’m saying is if they could maintain performance and lower temps they would do that as less heat would be a great benefit.  Borat might argue that can’t be done.  Possibly in current designs but I don’t think every design avenue is exhausted.  Either way, that’s irrelevant to a theoretical position that “if they could” they would go for it.  His case is obviously tangent to the qualifier and context.

Friiy,

    Found a nice Honda bucket to replace that one fixed up with your glue.  The glue held up fine to water and sub-zero temps.  A guy wants to buy it for $150 but I'm holding on to it as the chances of comming across another Honda with a bum bucket is pretty high.   Thanks. 

I do not like that design. My old Submarine had a Fairbanks engine. It had 2 cranks. The lower crank ran the generator and the upper crank drove the blower, water pump and stuff. It had 2 pistons for each cylinder. When the pistons come together it compresses the air and a injector the size of a 2 liter coke bottle injects fuel. Very reliable design. Tug boats use them too, they make about 4,000 Hp at about 50 gallons of fuel an hour. I do not think they will make a good snow blower engine though.