General information
1. The power supply system of any internal combustion engine consists of a fuel supply system and an air supply system.
2. The main elements of the fuel supply system are a fuel tank installed at the rear under the car, an electric fuel pump placed in it (low pressure) and fuel filter. All elements of the system are interconnected by fuel lines.
3. The air supply system includes an air cleaner (with replaceable filter element), air duct system, turbocharger and charge air cooler (intercooler).
4. Gasoline models have a fuel vapor recovery system (EVAP). Harmful gasoline vapors from the ventilation system enter the adsorber and then into the engine cylinders, where they are burned. The fuel vapor adsorber is mounted on the right fender of the vehicle.
5. The engine power system is closely connected and functions as a whole with engine control systems (see Parts B and C) and ignition system (gasoline engines) (see chapter 5).
6. The process of formation of the working mixture and its supply to 8 engine cylinders on modern cars is controlled by electronics, therefore, almost all the main elements of the engine power system are equipped with control sensors. There is no gas pedal drive cable - its functions are performed by a special pedal position sensor.
7. All data received from information sensors are processed in the electronic module of the engine control system, which, based on their analysis, controls the moments and amount of fuel supply to the cylinders, ensuring optimal performance of the power unit, regardless of changes in external factors.
8. In the event of a malfunction in any element of the engine management system, the failure warning lamp is activated on the instrument panel (MIL) (see chapter «Controls and methods of operation», Section 16). When the warning lamp comes on, the car should be driven to an Opel authorized service station as soon as possible for detailed diagnostics using special equipment (see chapter 5) and performing necessary repairs.
9. Data on the remaining fuel reserve in the tank, along with data on the mode of its consumption, are displayed on the infotainment system display (see chapter «Controls and methods of operation», there are also tips for reducing fuel consumption).
Safety precautions and cleanliness when working with the fuel system
10. Gasoline is a highly flammable liquid. Do not approach the work area with an open flame or a lit cigarette. Do not service the system in rooms equipped with natural gas-fired heaters equipped with a pilot flame (such as water heaters and clothes dryers). Keep a class B fire extinguisher handy at all times!
11. Fuel fumes are poisonous - keep the workplace well ventilated. Fuel (especially petrol) refers to the number of carcinogenic substances, i.e. substances that promote the development of cancer! Try to prevent fuel from getting into open areas of the body - use rubber protective gloves and goggles, in case of accidental unexpected contact with fuel, wash your hands thoroughly with warm water and soap. Clean up spilled fuel immediately and do not store fuel-soaked rags near open flames.
12. The fuel system is under pressure even when the engine is stopped (petrol models). When opening the system, it is necessary to first relieve the pressure using a special device (see below).
13. Take special precautions when working on diesel engine power system components. In particular, this statement applies to injector maintenance procedures. Remember that the fuel pressure at the outlet of the injectors is about 1100 atmospheres - do not expose your hands and other body parts to the jet.
14. Band and clamp type clamps are used to fasten hose connections. After disconnecting the hoses, the clamping clamps should be replaced with band or worm clamps. Fixing the locks of some clamps requires the use of special tools.
15. Before disconnecting the male connectors, thoroughly wipe them from the outside to prevent dirt from getting inside the duct.
16. Place removed components on a clean pad and wrap in polyethylene or paper - avoid using lint-free rags to wipe and wrap components.
17. If repairs take time, make sure that appropriate plugs are installed on all open holes in the components and components of the power system.
18. Replace only clean parts. Remove spare parts from the packaging only immediately before installation. Do not use parts that have been stored unpackaged (e.g. toolbox).
19. Do not use sealants containing silicone. Silicone particles that get into the engine do not burn out and can cause damage to the lambda probe.
20. Before removing the fuel tank, it is necessary to drain the fuel or pump it out with a pump specially designed for this purpose. But an empty tank is also explosive! Before disposing of the tank or before carrying out repair work to restore the tank (soldering, welding, cutting, etc.) it is necessary to neutralize the effect of gasoline vapors, for which the exhaust gases of another car are usually passed through the tank for a sufficiently long time. It would be best and most correct to entrust the restoration repair or disposal of the tank to service station specialists.
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