First, what is the difference between diesel and gasoline engines? To ignite the working mixture, the gasoline engine uses spark plugs. The diesel engine uses compression to increase the temperature of the air to the point at which the fuel is flammable.
The diesel engine uses a 4-stroke combustion cycle.
The air is drawn into the cylinder when the piston moves down.
The piston in the combustion chamber rises, which leads to air compression and causes an increase in air temperature.
When the piston reaches the top of the cylinder, diesel fuel is injected, and it is ignited, which leads to ignition that causes the piston to fall again.
The piston moves up, displacing the exhaust gases into the exhaust system.
In cold weather, the launch of the diesel engine can be difficult, since the air temperature at the top of the compression tact is not high enough. Therefore, the incandescent candle is the key component for each cold start. Its heating rod can reach temperatures above 1000 ° C in just a few seconds. So, for example, low-voltage Iskra incandescent candles takes only two seconds to achieve sufficient temperatures.
Incandescent candles are heated by the engine combustion chamber to a temperature sufficient to create the ideal ignition conditions for the fuel injected. It also reduces the start-up time required to start a diesel engine.
Candles of incandescent must, first of all, to withstand thermal loads, vibration and corrosion caused by aggressive gases and soot from combustion. In order to fulfill all the functional requirements and increase the service life,
How the incandescent candle works
The preheating system provides additional thermal energy necessary for a quick and confident cold start. Immediately before starting the engine, a voltage is supplied to the incandescent candle terminal, and the current flows through the controlling winding and an incandescent helix. The heating helix quickly reaches a high temperature (1000 ° C and more) and thermal energy is transmitted through the heating rod into the combustion chamber. When the air in the cylinder reaches the flavacy temperature, the fuel is injected, and a quick burning occurs, driven by the engine.
Phase subsequent incandescent (post-heating):
During decades, the incandescent candle was used only before launching. Today, they still reduce emissions of exhaust gases and make engines more environmentally friendly. It all became possible due to the subsequent incandescent phase. Candles continue to punish after launch to reduce the amount of white or blue smoke and maintain good stability at idle until the engine becomes fairly warm. The subsequent incandescent phase depends on the engine temperature, driving mode and environmental conditions.
Incandescent candles allow you to launch a cold engine, but they also play an important role in cleaning exhaust gas and reduce emissions.
The diesel engine is constantly being improved from the point of view of fuel consumption, output power and compliance with modern requirements. Not only are the requirements of the modern driver above, also the emission standards become more stringent.
In recent years, incandescent candle manufacturers have developed a new generation of incandescent candles for low-voltage devices operating on a rated voltage of 4.4 or 5 V.
The main characteristics of low-voltage glow candles
• Extremely short preheating time (heating to more than 1000 ° C
• reliable launch (also at -40 ° C)
• Reducing power consumption and reduced load on the electric system of the car.
• Long service life
• Reducing exhaust emissions
• noise reduction
• Glow profile and duration can be changed depending on the engine mode
• Used for Euro 5, Euro 6 and above
It is recommended to regularly change incandescent candles to ensure their best performance. Make sure that your chosen incandescent candles comply with the recommendations of automakers.