How to Adjust Idle Speed of Single Cylinder Diesel Engine

Slowly loosen the throttle opening adjustment screw with a screwdriver. When the engine is about to turn off, screw it in a little bit to keep the engine running. Adjust the idle mixture adjusting screw. Let the engine run faster. Turn out the valve opening adjustment again to realize stable idle work, which is both accelerated and flameout.

The normal idle speed of diesel engine is generally 500 ~ 800 rpm. Too low is easy to shake, too high is high. As long as it doesn't shake, the design engineer wants to keep the star as low as possible in order to save fuel.

Idle performance has a great influence on emissions, fuel consumption and comfort, so idle performance is an important index for evaluation. When idling, the engine is separated from the engine and the accelerator pedal is completely released. The engine only overcomes its own operation and does not output work.

When the engine is idling, it is called idling. Idle speed should not be too high or too low. Too high will increase fuel consumption, too low will make the engine idling unstable. The lowest idle speed to ensure the stable operation of diesel engine is the best idle speed.

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Influence of Idle Speed on Fuel Consumption

According to statistics, about 30% of the fuel consumption of urban motor vehicles is in the idle stage. Experienced drivers know that it is most fuel-efficient to keep the speed at 80- 100km/h when driving.

An evaluation team has tested idle fuel consumption. They first drove the car 15-20km to ensure that the car was in a hot state, and then filled the fuel tank as usual. Then turn on the air conditioner, set the air volume to one third of the maximum air volume, and start parking and idling. After an hour, refuel and get the final result.

The main measure to reduce idle fuel consumption is to reduce idle speed. Relevant research shows that every decrease in idle speed of 100 r// Min Min is equivalent to 0.4km per liter of gasoline. Also, improve the viscosity label of engine oil. The viscosity of the engine oil is the number marked after the capital letter W. Usually, using the engine oil of W40 will reduce the idle fuel consumption, and at the same time, getting a better low speed will help prevent the engine from stalling at the start.

References:

Baidu encyclopedia-idle speed