Measures For Low Temperature Starting Of Diesel Generator Set

With the advent of winter in the northern or western plateau areas of China in winter, because the ambient temperature is low, the construction machinery is difficult to start. The primary reason is that the air temperature at the end of the diesel engine cylinder contraction can not reach the temperature required by the launch, and the compressed air pressure in the cylinder is significantly lower than the pressure required by the launch; The optimal operating temperature of the battery is 20 ~ 40℃. With the decrease of the ambient temperature, its output capacity also decreases correspondingly, resulting in the decrease of the power of the diesel engine starting system. When the ambient temperature is low, the oil viscosity becomes large, the resistance between the conflict negative increases, so that the diesel engine starting speed decreases, together, the diesel viscosity increases, the fuel injection atomization quality deteriorates, and the ignition delay period is prolonged; Air density and oxygen content decrease with the increase of altitude, and the higher the altitude, the more difficult the diesel engine to start. In low temperature conditions, in order to ensure that all kinds of construction machinery can be safely put into use in cold conditions, daily maintenance should be done well, and low-temperature auxiliary starting system should be better installed. China Dingbo introduces you to several common low temperature.

Starting method:

(1) the selection of low temperature function of diesel engine oil such oil low temperature viscosity is small, the conflict between the pair is smooth, small starting resistance, conducive to start. Now the use of multi-stage oil, such as 15W/40W before the smaller the number of low temperature oil liquidity is better. Therefore, the use of 10W or 5W oil is recommended at low temperature.

(2) the battery with good low temperature function can be used for insulation of the battery when necessary, to ensure that it can be charged normally under low temperature conditions and meet the output current, and then improve the power of the starting system.

(3) Fill cold starting fluid

(4) Flame preheating starts

(5) Circulating water heating system (also known as fuel heater heating system)

(6) Other preheating methods in addition to the above preheating methods, can also choose hot water preheating method, steam preheating method, electric preheating method and other methods for low temperature start. The fuel heater starts at low temperature and the heating method of circulating water system is chosen. The fuel heater is the coolant medium in the circulating system of the heater through the principle of incineration heat exchange. Its control method is active type, the product uses light diesel oil which is suitable for the environmental temperature as fuel, and can work normally under the environmental conditions above -40℃. Use 24V dc power supply (also can be customized according to user needs 12V).

It can be combined with the engine and forced radiator and other auxiliary cooling devices to form a circulation system, for a variety of vehicle engine low temperature start, windshield defrosting and indoor heating supply heat.

The product is suitable for the following conditions: 1. Ambient temperature: -40℃- +40℃ 2. Temperature in the system: ≤95℃ 3. Pressure in the system: 0.4-2kgf/cm2 4. 5. Wind speed: 0-100km/h Circulating cooling medium heating system, also known as fuel heater heating system. The diesel engine can be started normally in an environment below -40℃. The picture shows a liquid fuel heater. Fuel incineration can continuously heat the cooling medium in the whole circulation system. The heater adopts 24V or 12V DC power supply and forms a circulating heating system with diesel engine and radiator. Not only can the cylinder and piston conflict between the oil temperature, oil viscosity decreased, but also can make the air in the intake pipe is heated. This is the new low temperature auxiliary starting method, this low temperature starting method is through the fuel heater, incidentally, the water pump will be in the engine body coolant out, the fuel heater will be heated after recycling to the engine body, in order to heat the engine, to reach the intention of starting the engine under low temperature conditions. Operation principle of fuel oil heater, motor drive the oil pump, fuel electric fan via pipeline to the atomizer, atomization and combustion fan inhaled burned in the main indoor air mixing, burn by hot electric plug, in the interior of energetic burned after exhumation, the heat sink for the inner surface of water jacket, will heat the water to set in the interlayer cooling medium, The heated medium circulates through the whole piping system under the effect of a pump (or heat convection) to reach the heating intention. The waste gas from incineration is discharged through the exhaust port. The whole heating process of this low-temperature starting method takes 30-40min, which can heat the engine body temperature to 40-50℃ or so. At the moment, the engine oil can also be heated, the viscosity of the oil decreases, and the smooth condition of the engine under low-temperature conditions is improved, so that the engine can start smoothly. This low temperature starting method has remarkable advantages, which greatly improves the engine's starting function under low temperature and cold condition.