The main problem of knowing with a diesel engine - to start. The problem is exacerbated when
a. The engine is to be a role model for indirect injection
b. The temperature is near or below zero
c. The engine must be started with fuels other than diesel.
To overcome this problem, many manufacturers of diesel vehicles, a heating system to the engine and / or made available to the engine using ether or petrol start and then switch toDiesel. Electric heating systems can be automatically or manually. Diesel electric heater is in many ways. Two of the most commonly used heating in the room with glow plugs and heating of the intake air with an electric heater placed in the intake manifold.
Pressed into a heating system, manual key is the dashboard mounted indicator light on the amount and duration of the show-heating, the chamber is transferred through a series of glow plugs. TheAdvantage of this system is that no complex electronic control light. However, the disadvantage is that you try and heat on a hunch. If the button is pressed for longer than necessary, the battery is depleted and reducing the life of spark plugs.
Automatic engine glow plugs for heating, the heat is automatically activated when the engine is running. The controller CPU (timer) is the true meaningEngine temperature by a sensor mounted on the engine block or a jacket cooling water, or do you feel indirectly) with an internal controller (timer. Based on the feedback sensor, the controller (timer) automatically determines how much time to heat the glow plugs. At the end of the heating cycle, the controller shuts down automatically and shows that the preheating is completed and the engine is readyDeparture. The controller waits for the next time you start the engine. The advantage of this system is that the process fully automatically if the engine is started and the heating cycle operates automatically depending on the time required. This saves the battery and increases the life of spark plugs. It also eliminates the "white smoke" causes air pollution harmful. This type of automatic system is advantageous for heating the intake air, which can not preheatRoom, would be inefficient and heating. The air heater is also much more expensive than glow plugs and the replacement is difficult. It consumes more energy than the direct heating by the fire.
Most manufacturers of diesel engines with direct or indirect heating, the automatic motor of 12 or 24-volt plug, but some have a faster system to about 5.6 V and 9V you preheat systems for rapid preheating glow plug. With the rapid heating system controllercomplicated and expensive. Therefore, the norm for the standard time of warming of about 7 / 8 sec. 20 degrees. C. The time of heat in the control curve was calibrated so as to vary the heating time automatically depending on the engine temperature. Be reduced, in other words, the heating time for a second when the engine is hot, preserve, and the deadline is up to 30 s when the initial conditions be extended extreme cold.
Moreover, for extremely cold climatesManufacturers provide simultaneous heating during startup after a period of preheat is over, and after the heating time after the engine has started. This simultaneous heating and eliminates the problem of "white smoke" because of non or partial combustion of fuel in extremely cold climates. However, to keep the prospect of future sales of replacement parts, not to allow the manufacturers of heating the interchangeability between different vehicles. The rise in prices, and often localTechnicians do not know how to check, replace and calibrate these systems.
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