Saab 9-5

since 1997 of release

Repair and car operation



Saab 9-5
+ Saab 9-5 Cars
+ Governing bodies and operation receptions
+ Settings and routine maintenance of the car
+ Engine
+ Systems of cooling of the engine, heating, ventilation and air conditioning
- Power supply system and production of the fulfilled gases
   General information and security measures
   Sbrasyvaniye of pressure in fuel system
   + Power supply system of petrol engines
   - Power supply system of the diesel V6 engine
      General information
      Removal and installation of a sleeve of an air inlet, case of the air filter and MAF sensor
      Removal and installation of the inlet pipeline
      Replacement of the sensor of provision of a pedal of gas
      Replacement of sensors of a turbo-supercharging and sensor of temperature of fuel
      Replacement of the valve of management with pressure of pressurization
      Removal and turbokompressor installation
      Removal and installation of an interkuler
      Removal and installation of a fuel tank
      Replacement of the fuel filter
      Removal and installation of the fuel distributive highway
      Removal and installation of the sensor of a stock of fuel
      Removal and TNVD installation and replacement of its epiploon
      Removal and installation of nozzles
   + Systems of release and decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment





Power supply system of the diesel V6 engine

General information

At operation of the diesel engine in its cylinders clean air which is compressed to a high pressure is soaked up. Thus air temperature rises above temperature of ignition of diesel fuel. Fuel is injected into the cylinder with some advancing and самовоспламеняется. Thus, spark plugs for fuel ignition in the diesel engine are not used.

On the cold engine the temperature of the compressed air can not reach value necessary for ignition. In this case additional preliminary warming up is necessary. For this purpose in each cylinder the glow plug which is heating up the chamber of combustion is established. Duration of heating depends on surrounding temperature and is regulated by the control unit of the engine and the relay of preliminary warming up.

The scheme of power supply systems and release of OG is presented on an illustration.

Scheme of power supply systems and OG release

1 — the Sensor of pressure of forced air
2 — Final port with the sensor of an inclination of shovels
3 — case Ventilation
4 — the Vacuum pump
5/6 — the Forward/back catalytic converter
7/8 — the Forward/back exhaust silencer
9 — the Valve of management of pressure of pressurization
10 — the IAT Sensor

11 — the Filtering element
12 — the MAF Sensor
13 — Turbokompressor
14 — Interkuler
15 — the Oil separator of system of ventilation of a case (it is built in the engine)
16 — the EGR Valve
17 — the Control valve
18 — the Engine

Separately components of system of supply of fuel are designated on an illustration.

Scheme of supply of fuel

1 — the Fuel distributive highway
2 — the otsechka Valve
3 — Nozzles
4,5 — Returnable lines
6,7 — the Valve of management of pressure of fuel
8 — the Fuel pump

9 — the Party of a high pressure
10 — the Submitting line (from a tank)
11 — the Fuel filter with heating
12 — the Fuel tank
13 — the Sensor of pressure of fuel

Components of an inlet air path are specified illustrations.

Components of an inlet air path

1 — an air inlet Sleeve
2 — the Air purifier
3 — the Rubber knee
4 — the MAF Sensor

5 — the Connecting tube
6 — Turbokompressor
7 — Connection with an interkuler
8 — Interkuler

Fuel is compressed to pressure necessary for injection in the fuel pump of a high pressure (TNVD) where it moves the fuel pump from a fuel tank via the fuel filter. Pressure of injection is regulated by the control unit the engine.

The fuel distributive highway is applied to a fuel supply from TNVD to nozzles of separate cylinders.

Diesel engines cope the electronic system similar to a control system of petrol engines. Differences are listed below.

In a control system of diesel engines the cable of management is not used by a butterfly valve, instead of it the sensor of provision of a pedal of the gas, located on a support of a pedal of gas is established. Besides, it is used Д/В brake pedals (Д/В stoplights) which provides decrease in supply of fuel at single turns if the sensor of provision of a pedal of gas failed. The sensor of provision of a camshaft (CMP) together with the CKP sensor hands over to the control unit information on VMT of the piston of the first cylinder. It serves for synchronization of the moment of ignition and sequence of ignition.