Control system of hashing of air on an admission (VTCS). Mazda 3 (since 2003 release)
Mazda 3 since 2003
1. Operation and maintenance of the car
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 (ICR)
2.5.2.3. Regulator of idling (IAC)
2.5.2.4. Management of an air duct with variable characteristics (VAD)
2.5.2.5. System of start-up with variable characteristics (VIS)
2.5.2.6. A control system of hashing of air on an admission (VTCS)
2.5.2.7. Control of the mechanism of change of phases of gas distribution
2.5.2.8. Management of fuel injection
2.5.2.9. Management of switching off of the air conditioning system
2.5.2.10. Control of the electric fan
2.5.2.11. Local network of the controller (CAN)
2.5.2.12. System of onboard diagnostics
2.5.3. Codes of malfunctions
2.6. The Z6 engine – a mechanical part
2.7. Lubrication system
2.8. Cooling system
2.9. System of an admission
2.10. Fuel system
2.11. System of production of the fulfilled gases and system of decrease in toxicity
2.12. System of ignition
2.13. Control system
2.14. Tables
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
 








2-5-2-6-sistema-upravleniya-peremeshivaniya-vozdukha-na-vpuske-vtcs.html

2.5.2.6. A control system of hashing of air on an admission (VTCS)

The VTCS system puts in action the gate in an inlet collector for increase in speed of a stream of air on an admission and creations of turbulences in the combustion chamber for improvement of the dispersion entered into the fuel cylinder. At the same time the number of emissions of CH and CO with the fulfilled gases at small loadings decreases.
The PCM block turns on the electromagnetic VTCS valve which closes the gate in an inlet collector if the following conditions are satisfied:
– frequency of rotation of the engine – is lower than 3750 min.-1;
– the angle of opening of a butterfly valve – is lower than 1500 min.-1 – the butterfly valve is closed, between 2000 min.-1 and 3000 min.-1 – 26–29%, higher than 2500 min.-1 – the butterfly valve is completely open;
– temperature of cooling liquid is below 63 °C.
The PCM block switches off the electromagnetic VTCS valve for preservation of starting qualities and stability at start of the engine and during 0,2 from later launch of the engine.

"previous page
2.5.2.5. System of start-up with variable characteristics (VIS)
following page"
2.5.2.7. Control of the mechanism of change of phases of gas distribution




d925ae9b