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Mercedes S-class W2021993-2000 of releaseRepair and car operation |
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Mercedes W202 + 1.2. The general data + 2. Maintenance service + 3. Engines + 4. Greasing system + 5. Cooling system + 6. Heating, ventilation + 7. Ignition system - 8. Fuel system - 8.1.1. Introduction 8.1.2. A fuel tank 8.1.3. The gauge of level of fuel 8.1.4. The fuel pump 8.1.5. The fuel filter 8.1.6. The air filter 8.1.7. A cross-section pipe of the air filter 8.1.8. An inlet gas pipeline 8.1.9. A cable of gas / the lever throttle заслонки (DB) 8.1.10. A cable of management of gas (DB) 8.1.11. A contour of fuel of the diesel engine 8.1.12. Prestarting heating of diesel fuel 8.1.13. The fuel thermostat 8.1.14. The hydrovalve case 8.1.15. A cable of gas / the lever throttle заслонки (ДД) 8.1.16. A cable of management of gas (ДД) + 8.2. System of injection of petrol engines + 8.3. System of injection and a food of diesel engines + 8.4. System of release of the fulfilled gases + 9. Transmission + 10. A running gear + 11. A steering + 12. Brake system + 13. A body + 14. An electric equipment + 14.2. Electroschemes |
8.1.12. Prestarting heating of diesel fuel
To guarantee normal fluidity of diesel fuel and thanks to it to prevent corking топливопроводов and filters, in particular at the big colds, fuel is preliminary warmed up according to an ambient temperature. The toplivopodkachivajushchy pump sucks in fuel from a tank through the fuel filter of rough clearing. Thus diesel fuel directly proceeds before топливоподкачивающим the pump of the fuel thermostat which depending on fuel temperature defines degree of prestarting heating of fuel. The engine in volume of 2,0 l The engine in volume of 2,0 l (the party of low pressure)
For prestarting heating diesel fuel arrives from the thermostat through a line submitting diesel fuel () to the heat exchanger (148) on a fuel submitting line (), through a drain of diesel fuel (D) again back in the thermostat and therefrom by means of the fuel pump in the fuel filter. If fuel temperature more low 18 ° C, the thermostat is completely open also all quantity of fuel flows through the heat exchanger. At temperature from 18 to 30 ° C the mixed mode prevails, i.e. Fuel partially flows through the heat exchanger and is partially direct to топливоподающему to the pump. At temperature above 30 ° C fuel giving to the heat exchanger from the thermostat stops.
Engines in volume of 2,2/2,5 l
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