To reduce emissions of harmful substances in the atmosphere together with the fulfilled gases the following systems of decrease in toxicity of the fulfilled gases are used:
– catching system паров fuels;
– system of ventilation of a case;
– system of a retsirkulyatsiya of the fulfilled gases;
– catalytic converter.
Arrangement of elements of the monitoring system and decrease in toxicity of the fulfilled gases in a motor compartment of cars with the TED engine
1–electronic control unit;
2–measuring instrument of a consumption of air;
3–fuel nozzle;
4–the sensor of temperature of cooling liquid;
5–valve of a control system of frequency of idling;
6–main relay;
7–block of coils of ignition;
8–relay of the fuel pump;
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9–valve of ventilation of a case;
10-valve of system of catching паров fuels;
11-the warmed sensor of oxygen;
12-sensor of provision of a butterfly valve;
13-sensor of provision of a cranked shaft;
14-sensor of provision of a camshaft;
15-the sensor of temperature of air arriving in the engine;
16-the valve of a retsirkulyatsiya of the fulfilled gases |
Arrangement of elements of the monitoring system and decrease in toxicity of the fulfilled gases in a motor compartment of cars with the BFD engine
1–air filter;
2–throttle knot;
3–resonant chamber;
4–accelerator cable;
5–valve of a control system of frequency of rotation of idling;
6–the sensor of temperature of air arriving in the engine;
7–fuel nozzle;
8–valve of ventilation of a case;
9–valve of system of catching паров fuels;
10-diagnostic socket;
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11-electronic control unit;
12-sensor of provision of a cranked shaft;
13-the sensor of absolute pressure in an inlet collector;
14-the sensor of temperature of cooling liquid;
15-sensor of provision of a butterfly valve;
16-the warmed sensor of oxygen;
17-main relay;
18-relay of the fuel pump;
19-block of coils of ignition; |
Arrangement of vacuum hoses of the monitoring system and decrease in toxicity of the fulfilled gases in a motor compartment of cars with the TED engine
1–the canister with absorbent carbon;
2–valve of system of catching паров fuels;
3–resonant chamber;
4–throttle knot;
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5–air filter;
6–inlet air branch pipe;
7–zabornik of fresh air;
8–valve of ventilation of a case |
Arrangement of vacuum hoses of the monitoring system and decrease in toxicity of the fulfilled gases in a motor compartment of cars with the BFD engine
1–the canister with absorbent carbon;
2–valve of system of catching паров fuels;
3–resonant chamber;
4–throttle knot;
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5–air filter;
6–inlet air branch pipe;
7–zabornik of fresh air;
8–valve of ventilation of a case |
Catching system паров fuels
The catching system паров fuels prevents evaporation паров fuels in the atmosphere from a fuel tank therefore formation of a photochemical smog is prevented.
Pairs of fuel accumulate in the canister with absorbent carbon. At operation of the engine the electronic control unit opens the valve, and pairs of fuel arrive in the engine where there is their combustion.
The control valve is used for management of pressure паров fuels in a fuel tank.
Scheme of system of catching паров fuels
System of ventilation of a case (PCV)
The valve of system of ventilation of a case copes the depression created in an inlet collector at operation of the engine.
At operation of the engine on frequency of rotation of idling, the valve is open slightly therefore a small amount of karterny gases is taken away in the resonant chamber and further дожигается in engine cylinders.
At increase to frequency of rotation of the engine, extent of opening of the valve therefore the amount of karterny gases which is taken away in the resonant chamber and further дожигается in engine cylinders increases increases.
Scheme of system of ventilation of a case (PCV)
System of a retsirkulyatsiya of the fulfilled gases (EGR)
For reduction of emissions with the fulfilled gases of an oxide of nitrogen, the system of a retsirkulyatsiya submits a small amount of the fulfilled gases to an inlet collector, thus there is their reburning in cylinders of the engine and the temperature of combustion of a fuel mix decreases. On Sephia/Shuma cars specially developed new linear EGR valve is established. This valve carries out functions of the electromagnetic valve of a retsirkulyatsiya of the fulfilled gases and the management valve. On the basis of signals from the control unit, the valve operates amount of the fulfilled gases submitted to the engine at the expense of the core moving which situation is defined depending on information received from sensors of provision of a butterfly valve, a measuring instrument of a consumption of air and the sensor of temperature of cooling liquid.
The scheme of system of a retsirkulyatsiya of the fulfilled gases (EGR)
Elements of system of production of the fulfilled gases
1–reception exhaust pipe;
2–catalytic converter;
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3–preliminary exhaust silencer;
4–main exhaust silencer |
Removal
| PERFORMANCE ORDER |
| 1. Remove elements of system of production of the fulfilled gases in the sequence designated by figures on fig. Elements of system of production of the fulfilled gases. |
| 2. Visually check a condition of elements of system of production of the fulfilled gases and, if necessary, restore or replace them. |
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