Repair and car operation
+ 1. Maintenance instruction
+ 2. Engine
+ 3. Greasing system
+ 4. Cooling system
+ 5. Control, decrease in toxicity
- 6. Fuel system
6.1. Specifications (SOHC and DOHC)
6.2. Check of the fuel pump
6.3. Check of the pressure created by the fuel pump
6.4. Checks of system of injection of MFI
6.5. Control lamp of malfunctions (MIL)
6.6. Diagnostic codes of malfunctions of "OBD-II"
6.7. Diagnostic codes of malfunctions, except «OBD-II»
6.8. Replacement of the fuel filter
6.9. Replacement of the limiter of overflow (the double-thread valve)
6.10. Fuel level sensor replacement
6.11. Control system of the MFI engine
6.12. Fuel nozzles
6.13. Throttle knot
6.14. A power supply system with the carburetor
6.15. Check of frequency of rotation of idling
6.16. Adjustment of frequency of rotation of idling
6.17. Frequency of rotation of idling and adjustment of a fuel mix
6.18. Check and adjustment of the starting arrangement
6.19. Check and adjustment of a free wheeling of a cable of an accelerator
6.20. Fuel tank
6.21. Catching canister паров fuels
6.22. Replacement of the fuel filter
6.24. Cable and accelerator pedal
6.25. Search and elimination of malfunctions of fuel system with the carburetor
+ 7. Ignition system
+ 8. Coupling
+ 9. Transmission
+ 10. Axes and power shafts
+ 11. Suspension bracket
+ 12. Steering
+ 13. Brake system
+ 14. Body
+ 15. Central air
+ 16. Electric equipment
+ 17. Appendix
+ 18. Electroschemes
Placement of elements of a control system of MFI
Management of fuel system is carried out by the control unit the ESM engine (Engine Control Module). The ESM block carries out adjustment of a corner of an advancing of ignition, defines amount of fuel submitted to the engine, operates system of decrease in toxicity of the fulfilled gases and frequency of rotation of a cranked shaft of the engine idling, and also coupling of the compressor of the conditioner etc. The ESM block changes power setting depending on changing operational modes on the basis of signals from various switches and sensors.
For example, the ESM block regulates a corner of an advancing of ignition on the basis of signals of sensors which react to frequency of rotation of a cranked shaft, temperature of cooling liquid, the provision of the butterfly valve included at present of transfer, speed of the car etc.
The ESM block regulates frequency of rotation of a cranked shaft of idling on the basis of signals of sensors which react to the provision of a butterfly valve, the speed of the car included at present transfer etc.
The sensor of a measuring instrument of a consumption of OBD air (MAF – Mass Airflow Sensor)
The sensor of temperature of OBD air arriving in the engine (IAT – intake air temperature)
The sensor of absolute pressure in an inlet collector, except "OBD" (MAF – Manifold Absolute Pressure)
The sensor of absolute pressure in an inlet collector represents the sensitive variable resistor. It measures pressure in an inlet collector which changes depending on operational modes of the engine and is transformed to tension. The sensor also is used for measurement of atmospheric pressure at start of the engine and provides power setting at different heights above sea level. On the basis of information from the sensor the control unit the engine regulates amount of fuel submitted to the engine, and also changes a corner of an advancing of ignition.
The sensor of temperature of air arriving in the engine (IAT – intake air temperature)
The sensor of temperature of cooling liquid (ECT – Engine Coolant temperature)
The sensor of temperature of cooling liquid supervises temperature of cooling liquid and on the basis of a sensor signal the ESM block calculates width of the impulse submitted on nozzles therefore the amount of the fuel submitted to cylinders of the engine changes, and also changes a corner of an advancing of ignition.
The sensor of provision of a butterfly valve (TP – Throttle Position)
The sensor of provision of a butterfly valve hands over information on the basis of which the ESM block defines when the butterfly valve is closed, completely open or is in intermediate provisions. The sensor is rigidly connected to butterfly valve shaft. Depending on the provision of a butterfly valve resistance of the sensor changes. For a sensor food from the ESM block on it tension of 5 Century moves. Target tension of the sensor changes from 0,25 In at the minimum opening of a butterfly valve to 4,7 In at complete opening of a butterfly valve.
The sensor of provision of a camshaft (CMP – Camshaft Position Sensor)
The sensor of provision of a camshaft develops impulses on the basis of which the ESM block identifies the first cylinder and time of opening of a nozzle.
The sensor of an angle of rotation of a cranked shaft (CKP – Crankshaft Position Sensor)
The sensor of an angle of rotation of a cranked shaft hands over to the ESM block information on the provision of a cranked shaft. On the basis of information of a target signal of this sensor and a signal of the sensor of provision of a camshaft the ESM block defines a corner of an advancing of ignition and the cylinder to which it is necessary to submit fuel. In the absence of target signals of the sensor the engine will not be started.
Depending on the content of oxygen in the fulfilled gases the sensor of oxygen induces tension from 0 to 1 V.Na osnovanii of these data the control unit the engine changes time of opening of nozzles and a fuel ratio in a toplivnovozdushny mix. In order that there was a complete combustion of gas mixture and in the fulfilled gases there were no harmful substances, 1 part of fuel should fall on 14,7 weight parts of air.
The sensor of oxygen is equipped with a heater which maintains temperature of the sensor in a certain interval at operation of the engine on all operational modes. Maintenance of a certain temperature of the sensor allows system to get into gear and work quicker in an idling mode.
Fuel nozzles on the basis of signals from the ESM block inject fuel into engine cylinders. The amount of submitted fuel depends on time of opening of nozzles, i.e. from width of an impulse of tension submitted on a nozzle winding.
The sensor of a detonation reacts to high-frequency fluctuations of the block of cylinders and transforms them to the electric signals which size increases at increase in a detonation. On the basis of these signals the ESM block displaces the ignition moment towards delay therefore the detonation is eliminated.
Fuel pipelines and hoses