How it works

Carburetion / Carburetor
This article is part of the simply explained series, it will cover the simplest of carburetors like those found on most stationary engines. While the modern carburetor is a complex beast, for the most part we can ignore the complexities when dealing with Stationary Engines.

The job of the carburetor is to mix combustible fuel (usually petrol (gasoline) or kerosene) with sufficient air to make a readily combustible mixture which is drawn into the combustion chamber to be ignited in the power stroke. The simple carburetor we will deal with in this article uses the vacuum of the intake stroke of a piston to draw fuel though a small hole which is partially blocked making a spray of fine droplets - a vapour. This vapour mixes with air drawn through another port during the same cycle then sucked through the intake valve and burnt. Sounds simple? It is. The only complex part of carburetion is achieving a balance between three things, vacuum, air and fuel.…

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All Internal Combustion engines use a flammable fuel (liquid or gas) source. The primary difference is in how they use the fuel.

In the realm of stationary engines, there are basically two kinds of engine, those which compress and ignite the fuel with a spark or heat source and those which rely solely on the heat generated from highly compressing the combustion mixture for ignition. The later kind are a class of Internal Combustion called Diesel Engines.…

Read more: Fuels and Ignition

Spark Plugs
The spark plug is found in most of the more recent Stationary Engines powered by petrol (gasoline) or kerosene. The spark plug ignites the fuel when it is energised from a coil or magneto. In this article we'll deal with:
  • Types of plug
  • Cleaning a plug
  • Identifying plug condition and cause…

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Magneto Lucas RS1


These magnetos are of the rotating magnet type, that is, the magnet system revolves, while the less robust parts, such as the winding and condenser, are stationary, and the contact breaker does not rotate, so that these parts are not subjected to mechanical stresses.

Some magnetos are fitted with an ignition switch which provides a means of stopping the engine, while with other types provision is made for the ignition switch to be situated remote from the magneto.…

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The 2 Stroke Diesel Engine - Simply Explained

This series shows a cut-away diagrams of a Two-Stroke Diesel engine. This engine design is the simpler mechanically of two and four stroke as it minimises the number of moving parts which must be kept in sync. The description "two stroke" comes from the fact that the engine fires (burns fuel) on every upward stroke (travel of the piston from bottom of the cylinder to the top), thus there are two strokes for every ignition of fuel, and upward and a downward stroke. The first stroke moves from bottom to top, where compressed air and fuel ignite and begin the second stroke where the piston is forced back downwards by the explosive force of the fuel igniting.…

Read more: The 2 Stroke Diesel Engine - Simply Explained