Under low temperature conditions, the biogas generator unit is easy to be excessively cooled, resulting in failure to start. The editor will introduce the following ways to successfully start the biogas generator set at low temperature:
Circulating water heating system (also known as fuel heater heating system)
1. This is a new low-temperature auxiliary starting method adopted in recent years. This low-temperature starting method is to pump out the coolant in the engine body through the water pump attached to the fuel heater, heat it and recycle it to the engine body through the fuel heater, so as to heat the engine and achieve the purpose of starting the engine under low temperature conditions.
2. Flame preheating start
The working temperature of the flame preheating device is -40 ℃, and the working process is electronic automatic control. The flame preheating starting device is generally composed of electronic controller, solenoid valve, temperature sensor, flame preheating plug, fuel pipe and wire. The working process of the device is to heat the glow plug to 850-950 ℃, turn on the starter, the solenoid valve automatically opens the oil circuit, and supply oil to the glow plug through the fuel pipe for flame preheating and startup.
3. Fill cold starting liquid
Cold starting fluid is an auxiliary starting fuel (composed of ether, low volatile hydrocarbon and low pour point engine oil with additives). The low pour point engine oil with additives can improve the lubrication conditions of cylinder wall and achieve the purpose of starting. When this starting method is selected, the starting liquid with good atomization should be selected, and the injection time, injection position and injection amount should be well controlled. In addition, do not spray starting fluid directly from the air inlet of the air filter, so as not to affect the quality of the air filter element and increase the injection amount of lifting fluid, resulting in overspeed of engine cold start.
4. Other preheating methods
In addition to the above preheating methods, many other methods can be used for low-temperature start-up, such as hot water preheating method (injecting hot water to the boiling point into the cooling system), steam preheating method (the upper steam enters the cooling system from the lower pipe of the water tank through the pipe, or directly into the engine cooling water jacket), electric preheating method (inserting the heater directly into the cooling system or engine oil, which has high thermal efficiency and is convenient for the use of the generator set).
The above is a detailed introduction of biogas generator set for you. I hope it can help you. If you have any questions, please contact us. We will provide services for you with a professional attitude https://www.huannengpower.cn