What is the role of the glow plug of parking heater?

As a key component for low-temperature starting, the glow plug of parking heater plays an irreplaceable role in ensuring the normal operation of the vehicle in a cold environment. Its function directly affects the heating efficiency and engine protection.

The rapid heating during cold start is the core function. In a sub-zero environment, the fluidity of the fuel deteriorates and the atomization effect decreases. The preheating plug generates heat through electrical energy or fuel combustion, which can increase the combustion chamber temperature to 80-120℃ within 30-60 seconds, making the fuel easier to atomize and burn, solving the problem of difficulty in starting at low temperatures, especially for diesel vehicles, which can greatly reduce the wear during starting.

Improve combustion efficiency and reduce energy waste. For heaters without preheating plugs, the fuel is not fully burned at low temperatures, which not only increases fuel consumption, but also produces carbon deposits. The preheating plug ensures that the fuel is fully burned at the optimal temperature through precise heating. Experimental data shows that the fuel utilization rate of heaters equipped with high-quality preheating plugs can be increased by 15%-20%, reducing harmful gas emissions.

It protects the engine and heater components. During cold start, if the fuel is not fully atomized, droplets will be formed to flush the lubricating oil film on the cylinder wall, aggravating the wear of the piston and cylinder body. The preheating plug establishes a suitable combustion temperature in advance, so that the lubricating oil can form effective lubrication at the moment of starting, reduce the early wear rate of the engine, and extend the service life of core components by more than 30%.

Strong adaptability to extreme low temperature environments. In extremely cold areas below -20℃, ordinary starting methods are difficult to work. The preheating plug can maintain the combustion chamber temperature through continuous heating, and cooperate with the heater's circulation system to ensure that the vehicle can still be heated or started normally in extremely cold weather, meeting the use needs of special scenarios such as northern winter and plateau areas.

Currently, the mainstream preheating plugs are divided into two types: electric heating and flame type: the electric heating type heats up through a resistance wire, has a fast response speed, and is suitable for small vehicles; the flame type heats up with the help of fuel combustion, has a large heat output, and is mostly used for large trucks or construction machinery. Regardless of the type, its core function revolves around "low temperature empowerment", which is the core guarantee for the reliable operation of the parking heater in a cold environment.

Regularly checking the status of the glow plug of parking heater (such as checking whether there is carbon deposits and whether the line is loose) can ensure that it continues to function in low temperature environments, avoid starting failures caused by preheating failure, and provide stable support for vehicle operation in winter.