Caroilne Diesel Engine

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CRANK SHAFT
Design Sequence
Crankshaft bearings and bearing support
Conecting rod - pistons
piston and sleeve rings
Sleeves
Wet liners
Block
Heads
Sleeve drive mechanism
Powers take off (drive end)
Powers take off (non drive end)
Oil pumps and system
Water pump and system
Alternator
Starter
Fuel system
Motor monitoring
Exhaust / inlet - manifolds
Turbo charger
Mounting
Propeller and governor
Design specifications and tolerances
PEREFERD SUPPLIERS
The competition
project # 1 links
DOWN LOADS
CONTACT

Why Sleeve Vale?

Would it not be simple just to make a traditional poppet valve?

It would not work very well.

If you had a 2. l diesel engine with an inlet manifold pressure of 8 bar running at 5000 rpm the valve springs and the force on the cams would be so big! Huge it would sap so much of the power!

But a sleeve valve is a mechanical shut off with, no spring harmonics, no fore back on springs, no valve bounce, no hot spot (exhaust valve) in the combustion chamber and the list goes on and on.

Micro light / ultra light, engine page

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We will be building a diesel micro-light engine.



Not any diesel engine mind you.



I have designed an engine by combining the designs of two old adversaries!



The one is the "Tiger Tank" from WW2 and the other was its archenemy the "Hawker Tempest" an unlikely combination but if you read on, I hope,it will all become clear.



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This project is to build a:

 

Small, simple, modern, reliable, using as many as possible standard available parts

 

Diesel engine.

 

The one idea that I thought was really good from the tiger tank engine from WW2 was the fact that the mane crank bearing was a roller bearing and that it ran round the radius of the crank.

 

With a small adaptation to this idea by making a bearing cage that then connects directly to the heads with long rods, I am hopping to be able to reduce the amount of lading on the crank case there by reducing crank case mass.

 

The next idea is from the Hawker Tempest. It had a Napier sleeve valve engine. The advantage of this method of valving is that one dose not has poppet valves trying to close at high RPM’s against high inlet manifold pressures. This method of valving is simple mechanical shutting of ports, regardless of what the inlet manifold pressure is.

 

An example of a diesel with an 8:1 inlet manifold pressure is the Napier Nomad, but that was a two-stroke engine, this will be a four stroke.

 

To attain the 8:1 inlet pressure, I am hopping to use two turbo charges in series, as in the Diesel Max dragster of JCB.

 

What do you think?