Recent content by brewnog

Big enough to ensure adequate lubrication, cooling and cleaning of bearings, reciprocating masses and valve gear at the required range of engine speeds and loads, under all foreseeable operating conditions.

Haha good shout, I'll give you that one. My Seven has 13" wheels and looks awesome!

They look cool.

I think there's a key difference between air bubbles entrained within the coolant, and 'pockets' of air trapped and preventing successful coolant flow...

At what speed does your prime mover apply 12Nm?

450 to 550 deg C, with a Cp of 1.1 kJ/kg.K in the stack would be a good starting point for a lean burn engine.

There are plenty of mechanical issues (fuel pump and injector lubrication problems, for instance) to contend with as well as the uncontrolled burn you will end up with.

Have a go at some solutions yourself, and let us know where you are getting stuck.

Fizzy pop.

Why would Pyrex scratch where aluminium wouldn't?

And get the Bosch automotive handbook.

Have a go yourself here first.

A kWh is an energy unit, not power. kJ/kWh is the normal way to express fuel consumption for an engine fuelled by gas. Convert to kJ/kWs (divide by 3600), take the reciprocal, and that is your efficiency. For overall efficiency, you also need to consider the amount of heat you are recovering...

Photo doesn't work...

The bowling ball might apply more torque to your elbow at 90 degrees, but this has nothing to do with efficiency, and does nothing to support your claim. I don't like people throwing around credentials, but you should understand that there are experts here. I am a professional engineer and have...