In household gasoline appliances (lawn mowers, saws, trimmers etc.) mainly two-stroke engines are used. The main problem of the internal combustion engine (ICE) is its relatively large dimensions per unit of power produced. Two-stroke engines can significantly simplify the design of the internal combustion engine, thereby significantly reducing its weight.
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How to make a fuel mixture
The use of two-stroke engines eliminates the need to use an ignition distribution system, an oil supply system and seriously simplifies the internal combustion engine cooling system. In addition, only in two-stroke cycles can a single-cylinder ICE design be used.
Oil for two-stroke engines
One of the disadvantages of a two-stroke engine is the need to create a special fuel mixture, which, in addition to fuel, must also include oil. This is necessary because to reduce the size of the engine, there is no oil supply system in it.
Many buyers are repulsed by the need to constantly mix gasoline and oil, but in fact there is nothing difficult about it. The article discusses how to make a fuel mixture for a two-stroke engine.
Action #1 Oil selection
Oil for two-stroke engines has a combination of "2T" in the marking
The fuel mixture consists of gasoline and a special oil for two-stroke engines. You can purchase oil from the same manufacturer that makes motor tools, but that is not fundamental.
The main criteria for choosing oil: quality and price. Oil should not be cheap, and its manufacturer should have a proven track record.
Also on the package with oil indicates the proportion, in which it should be mixed with gasoline.
For good and high-quality oils, this proportion is 50 to 1.
This means using 50 parts of gasoline and 1 part of oil. This ratio is equivalent to 2%.
Action #2 Calculate the amount of oil for the mixture
fuel mixture
Many people are confused about this proportion and do not understand how much oil should be poured into the fuel.
For the oil in question with a ratio of 50 to 1 with a volume of gasoline of 5 liters, you need to take 100 ml of oil. And for 1 liter of gasoline - 20 ml of oil. If the ratio were 33 to 1 (3%), it would be necessary to take 30 ml of oil for 1 liter of gasoline, etc.
Step #3 Preparing to mix
A set of tools and components for obtaining a mixture
To prepare the mixture, you will need the following devices and materials:
- plastic watering can
- The container in which the fuel mixture will be mixed
- Syringe without a needle of the appropriate volume (10-50 ml)
- Petrol
- Butter
It is desirable that the volume of the mixing container is known exactly.
Step #4 Pour gasoline into the mixing container.
Filling with gasoline is done using a watering can
First, gasoline is poured into the tank.
To use to create fuel, you need exactly the kind of gasoline that is indicated in the instructions for the motor tool. Mostly it is A92 gasoline.
The amount of gasoline used must exactly match the proportion, so it is advisable to use graduated containers with a scale indicating the amount of liquid filled. In this case, 1 liter of gasoline was poured.
Action #6 Preparing the oil.
The syringe is immersed in a container with oil and its set is made
Oil is collected with a syringe.
The oil is red; this is necessary so as not to confuse the fuel mixture with ordinary gasoline
There should be exactly as much oil as the proportion indicated on the container requires. In this case, it is 20 ml.
Action number 7 Mixing components.
To do this, the contents of the syringe are added to the container where gasoline was previously collected.
Next, pour the oil into gasoline.
The mixture is ready to use
Then you need to tightly close the container with a lid and shake it.
It should be noted that you should not prepare the fuel mixture for future use. It has a limited shelf life, so you need to prepare it immediately before use and use it as much as possible. Sometimes it is allowed to prepare the mixture for two uses with a short interval (several days) between them.
VIDEO: Preparation of a fuel mixture for two-stroke engines
Fuel mixture preparation for two-stroke engines
Do-it-yourself fuel mixture for two-stroke engines: quick and easy!
