28-02-2017, 02:39 PM
Nanotechnology in the mechanical field is the internal combustion engine at nano scale, which we have chosen as our area of interest. Heat engines have evolved from external combustion engines to internal combustion engines and the hot off the block is the nano internal combustion engine. The Nano is a 0.1cc (which is less than 0.01 cuin) compression ignition engine - more frequently, if something incorrectly, A as a "diesel". It was designed by Richard Gordon and plans were included as a supplement with British magazine model engineer in the early 1990s
An idea of the size of the Nano is given by this image. The back plate to the drive washer is less than 1 inch. Exotic materials are not required. The crankcase is cut from a solid 3/4 "aluminum bucket on one side. The piston and piston counter are cast iron. The crankshaft and cladding are old steel junk box
Here is an exploded view of the engine. The odd looking thing in the foreground is the special Nano-Wrench required to tighten the back plate. It also fits to the fuel nozzle. The construction is very conventional - only the scale is unusual
Like all model IC projects, there are special templates and tools needed to build the Nano. All are fully detailed in the plan, which includes step-by-step instructions with photos. The cutter is made of water hardening drill rod (called "silver steel" in the UK because of its appearance - does not contain silver). The teeth are formed of the Dremal type cutting wheel
The cutter is used to form the exhaust ports in the cylinder. There are three of these, spaced at 120 degrees with enough space between them for the angled transfer ports to overlap slightly to the timing. The piston crown is tapered to aid transfer. The counter piston has a concave concave depression that coincides.
The venturi is machined separately and secured with Lok-Tite before the final milling of the crank shaft. Note the three transfer passages in the photo. These end up in a transfer belt below the cylinder seat that matches the cylinder transfer ports. If you look very closely, you will also see the sausage that rejected part of the opening of the venturi.
There is nothing special in the components of the crankshaft. Another template (not shown) is made to hold the shaft in the mandrel of 3 jaws, displaced by the middle of the shot to form the crank pin. Even in these sizes, the finished custom finish is not different from the larger engines in terms of the amount of metal that should be left for disposal. Only microscopic size makes things difficult. The rollers of the prop driver were formed with a tool of thread form, fixed in the edge and used like formadora.
An idea of the size of the Nano is given by this image. The back plate to the drive washer is less than 1 inch. Exotic materials are not required. The crankcase is cut from a solid 3/4 "aluminum bucket on one side. The piston and piston counter are cast iron. The crankshaft and cladding are old steel junk box
Here is an exploded view of the engine. The odd looking thing in the foreground is the special Nano-Wrench required to tighten the back plate. It also fits to the fuel nozzle. The construction is very conventional - only the scale is unusual
Like all model IC projects, there are special templates and tools needed to build the Nano. All are fully detailed in the plan, which includes step-by-step instructions with photos. The cutter is made of water hardening drill rod (called "silver steel" in the UK because of its appearance - does not contain silver). The teeth are formed of the Dremal type cutting wheel
The cutter is used to form the exhaust ports in the cylinder. There are three of these, spaced at 120 degrees with enough space between them for the angled transfer ports to overlap slightly to the timing. The piston crown is tapered to aid transfer. The counter piston has a concave concave depression that coincides.
The venturi is machined separately and secured with Lok-Tite before the final milling of the crank shaft. Note the three transfer passages in the photo. These end up in a transfer belt below the cylinder seat that matches the cylinder transfer ports. If you look very closely, you will also see the sausage that rejected part of the opening of the venturi.
There is nothing special in the components of the crankshaft. Another template (not shown) is made to hold the shaft in the mandrel of 3 jaws, displaced by the middle of the shot to form the crank pin. Even in these sizes, the finished custom finish is not different from the larger engines in terms of the amount of metal that should be left for disposal. Only microscopic size makes things difficult. The rollers of the prop driver were formed with a tool of thread form, fixed in the edge and used like formadora.