Toyota PAB4-Toyota RAV4
1. Operation of the car
2. Maintenance
3. Engines
4. Cooling systems and conditioning
5. Fuel system and system of production of the fulfilled gases
6. System of ignition
7. The control system and decrease in toxicity of the fulfilled gases
   General information
   Technical characteristics
   System of onboard Diagnostics (OBD)
   Information sensors and executive stroystvo
   Codes of malfunctions of the OBD-II system
   Control unit of the engine (PCM)
   Sensors and valves of system of injection of fuel (EFI)
   System of compulsory ventilation of Carter (PCV)
   System of recirculation of the fulfilled gases (EGR) on models since 2001
   System of catching of vapors of fuel (EVAP)
   Catalytic converter
8. Coupling
9. Transmission
10. Driveshaft and shaft of the drive of driving wheels
11. Brake system
12. Suspension bracket
13. Steering and running gear
14. Body
15. Electric equipment
Schemes of electric equipment


Toyota RAV4>> The control system and decrease in toxicity of the fulfilled gases>> System of compulsory ventilation of Carter (PCV)

Fig. 7.25. Scheme of compulsory ventilation of a case: 1 – PCV valve; 2 – crankcase gases; 3 – fresh air


The system of compulsory ventilation of a case provides a suction from a case of crankcase gases and vapors of fuel in the inlet pipeline of the engine therefore increase in pressure in a case because of penetration into it of the fulfilled gases and their emission in the atmosphere (fig. 7.25) is excluded . Crankcase gases mix up with fresh air and via the valve of compulsory ventilation of a case move to an inlet collector.
The main components of system of compulsory ventilation of a case are the valve, the filter and vacuum hoses.
For support of frequency of rotation of idling the PCV valve limits the passed stream when vacuum in an inlet collector high. If break of the fulfilled gases in a case the engine big, for example, at wear of piston rings, the system of compulsory ventilation of a case directs crankcase gases to the air filter where they are burned further in engine cylinders.
Valve check of compulsory ventilation of a case is given in section 2.