Hyundai Matrix service from 2002 to 2006 of release
1. Operation and car maintenance
2. Engine
2.1. Maintenance
2.2. Mechanical part (engine of 1,6 l)
2.3. Mechanical part (engine of 1.8 l)
2.4. Cooling system
2.5. Greasing system
2.6. Power supply system
2.7. Control system, fuel system and system of decrease in toxicity
2.7.1. Main malfunctions and their reasons
2.7.2. Check of a technical condition (Check of frequency of rotation of the crankshaft of the engine idling)
2.7.3. Check of operability of the fuel pump
2.7.4. System of compulsory ventilation of a case
2.7.5. Catching system паров fuels
2.7.6. System of supply of fuel
2.7.7. Check of a control system by the engine with the distributed injection
2.7.8. Removal, check and installation of fuel nozzles
2.7.9. System of decrease in toxicity of the fulfilled gases
2.7.10. Removal and installation of the main exhaust silencer
2.7.11. Check of tightness of system of production of the fulfilled gases
2.7.12. Cars with catalytic converter in system of production of the fulfilled gases
2.7.13. Service regulations of cars with catalytic converter in system of production of the fulfilled gases
2.8. Tables
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
9. Electric equipment schemes
 







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2.7.9. System of decrease in toxicity of the fulfilled gases

The maintenance of toxic components in the fulfilled gases (WITH, CH, NOX) is supervised by a combination of changes in the engine and addition of special elements of management.
Changes of chambers of combustion, inlet collector, camshaft and system of ignition form the main control system.
Listed above change were united in effective system which operates decrease in toxicity of the fulfilled gases supporting good controllability the engine and fuel profitability.

Control system of structure fuel - an air mix
(system of the distributed injection of fuel (MFI))
Using signals of the oxygen sensor, the system of the distributed injection of fuel (MFI) operates the moment of the beginning of opening and duration of an open condition of the nozzle established in an inlet collector for each cylinder so that to provide optimum structure of an air and fuel mix and to reduce toxicity of the fulfilled gases.
Thanks to it the fulfilled gases made by the engine, correspond to the special structure, giving the chance applications of three-componental catalytic converter for decrease in concentration of toxic substances. Catalytic converter is applied to transformation of three groups of harmful substances (1 hydrocarbons (SN), the 2nd oxide of carbon (WITH) and the 3rd oxides of nitrogen (NOH)) in harmless substances.
The system of the distributed injection of fuel (MFI) can work in two modes:
– management without feedback on structure of an air and fuel mix («open-loop») is carried out according to the data which have been written down earlier in the electronic control unit by the engine;
– feedback control on structure of an air and fuel mix («closed-loop») is carried out according to the signals of the oxygen sensor arriving in the electronic control unit by the engine.

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2.7.8. Removal, check and installation of fuel nozzles
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2.7.10. Removal and installation of the main exhaust silencer