Mazda 6 since 2002
1. Operation and car maintenance
2. Engine
2.1. General description of new engines of the L8, LF and L3 models
2.2. Mechanical part of engines
2.3. Appendix 1
2.4. Appendix 2
2.5. Appendix 3
2.5.1. Control system
2.5.2. Principle of work and purpose of some components of a control system
2.5.2.1. Sensor of provision of a cam-shaft (SMR)
2.5.2.2. Sensor of provision of a cam-shaft (SKR)
2.5.2.3. Regulator of idling (IAC)
2.5.2.4. Management of an air line with variable characteristics (VAD)
2.5.2.5. Start-up system with variable characteristics (VIS)
2.5.2.6. A control system of hashing of air on an admission (VTCS)
2.5.2.7. Management of the mechanism of change of phases of a gazoraspredeleniye
2.5.2.8. Management of fuel injection
2.5.2.9. Management of switching off of central air of air
2.5.2.10. Management of the electric fan
2.5.2.11. Local network of the controler (CAN)
2.5.2.12. System of onboard diagnostics
2.5.3. Codes of malfunctions
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
 






2-5-2-8-upravlenie-vpryskom-topliva.html

2.5.2.8. Management of fuel injection

Main characteristics
There are two working hours of system of injection of fuel: «synchronous injection» and «asynchronous injection». Regulation with feedback use on barometric pressure and a signal of the back sensor of concentration of oxygen is entered.

Synchronous injection
The PCM block defines a choice of the moment of time of injection and amount of the fuel, synchronized with an angle of rotation of a cranked shaft, on the basis of the following signals during steps of an admission and release of each cylinder:
– position of the crankshaft, a mass consumption of air, temperature of cooling liquid, air temperature on an admission.

Asynchronous injection
The PCM block defines a choice of the moment of time of injection and amount of fuel on the basis of the following signals (without synchronization with a crankshaft angle of rotation):
– the provision of a butterfly valve, a mass consumption of air, temperature, temperature of cooling liquid, air temperature on an admission.

Correction on barometric pressure
Purpose: to keep stability of operation of the engine
Working conditions: always.
Action: lower barometric pressure, big correction.

Regulation with feedback use on a signal of the back sensor of concentration of oxygen
Purpose: ratio control air / fuel for ensuring the maximum productivity of catalytic converter.
Conditions: in a feedback zone.
Action: target tension of the back sensor of concentration of oxygen.

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2.5.2.7. Management of the mechanism of change of phases of a gazoraspredeleniye
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2.5.2.9. Management of switching off of central air of air