Ford Focus>> Ignition system>> Work with ignition system>> System of prestarting heating diesel двигател
At cold start-up, by experience, diesel engines hardly leave "slippers".
Ordinary diesel engines on a frost are got more hard than the petrol. The system of prestarting heating facilitates start-up of diesel engines. At start-up of the cold engine the glow plug warms up the combustion chamber together with the compressed air and fuel and by that facilitates ignition of a working mix. The system of prestarting heating works, when the ignition key established in the lock, there is in situation "heating". After start-up of the cold engine the glow plug continues to warm up within 2 minutes, it helps to reduce noise in operation of the engine and toxicity of the fulfilled gases.
At work of system of heating, on a combination of devices for some seconds the alarm filament lamp lights up. The system of prestarting heating consists of the electronic managing director and electric warming up parts.
The control unit is established under a cowl and regulates, depending on external temperature and engine temperature, glow plug operating time. Each cylinder is heated up by a separate candle. Glow plugs of the Focus car have no temperature adjustment. Soaked-up fresh air does not allow them to burn down, and their highest working temperature 1050 ° S.Kody malfunctions of system of prestarting heating can be считаны and are erased in a specialized workshop.
When the system of prestarting heating does not work
In system of prestarting heating you will notice existence of malfunctions at start-up of the cold engine on a blue smoke from the exhaust pipe, testifying to cold burning.
For check of system arrive as follows:
- check safety locks, special attention turn on a nest No. 1;
- if everything is all right, check tension on a glow plug;
- if tension less than 11,5 In, check a glow plug;
- disconnect a wire from one of four candles;
cоедините a control lamp with a wire and "weight";
- remove the contact socket from the sensor of temperature of cooling liquid and reliably fix, that there was no short circuit;
- establish the ignition key in situation "heating";
- if the control lamp burns about 20 with, the system of prestarting heating works normally;
- if the control lamp does not burn, check a safety lock or the incandescence relay;
- if time of an incandescence does not suffice, look for a mistake in the control unit.
Check of the relay of an incandescence
For check execute the following:
- open the assembly block of safety locks located under a cowl;
- check the relay (black color, a nest No. 9) on working capacity.