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Systems of decrease in toxicity of release - general information
Arrangement of components of systems of decrease in toxicity. Models C240 and C320
 | 1 - canister purge control valve
2 - shut-off valve of a coal adsorber
3 - The carbon adsorber | 4 - The pressure sensor in the fuel tank
5 - Fuel Pump |
Connection scheme of vacuum lines (models with the engine 111, equipped with an air compressor)
 | 1 - The actuator recirculation
2 - compressor supplied air
3 - Intermediate cooler (Intercooler)
4 - check valve mixing secondary air
5 - switch valve of the air pump
6 - Vacuum check valve
7 - the cut-off secondary air valve
8 - Pressure transducer | 9 - Control valve (carbon adsorber)
10 - purge control valve of a coal adsorber
11 - the cut-off valve of a coal adsorber
12 - The carbon adsorber
13 - The vent valve
14 - Pressure relief valve (ORVR)
15 - Fuel Tank
16 - fuel filler with connector system of catching of fuel evaporations |
Connection scheme of vacuum lines (models with engines V6)
 | 1 - Pressure Transducer EGR valve
2 - The EGR valve
3 - Vacuum check valve
4 - valve switch-geometry intake manifold
5 - Block switching of the inlet pipeline
6 - secondary air shut-off valve with integrated check valve
7 - Electric Air Pump | 9 - Pressure Sensor
10 - By the way consumers dilution
12 - fuel filler with connector system of catching of fuel evaporations
13 - the cut-off valve of a coal adsorber
14 - The carbon adsorber
15 - Fuel Tank |
Petrol models
The power systems of all petrol models to be used only unleaded gasoline. The engine management system operates in such a way to get the most out of the engine with minimum fuel consumption and emissions. EVAP system prevents them from the fuel tank into the atmosphere. Installed exhaust gas recirculation.
Crankcase Ventilation System
To eliminate leakage of unburned hydrocarbons into the atmosphere the engine completely sealed. Gases and oil vapors formed in said housing, fall through the mesh filter in the inlet conduit, and combusted in the cylinders with the fuel.
Gases are removed from the crankcase due to the pressure difference in the intake manifold and the crankcase (crankcase pressure above).
Catalytic converter
To reduce the amount of harmful emissions into the atmosphere on all petrol models in the exhaust system is built tr?�hfunktsionalny catalytic converter. The control system has a fuel injection feedback, which included oxygen sensor. This sensor is installed in the exhaust system, continuously informs the control unit of the composition of the exhaust gases. Depending on the data obtained, the control unit adjusts the quality of the mixture supplied to the combustion chamber and thus optimizes combustion.
The lambda sensor built-in heating element including a control unit through a special relay. The working surface of the lambda probe is sensitive to changes in the oxygen content in gases. Depending on the oxygen concentration, the sensor sends signals to different voltages. If the mixture pereobogaschena - the oxygen content in the exhaust gases is very low, the sensor gives signals with low voltage. Tension increases as the lean and increasing the oxygen content in gases. The most efficient converter operates at an optimum air-fuel ratio (14.7 parts air to 1 part of fuel). At the optimal concentration of oxygen in the exhaust gases is a jump in the voltage on the sensor. This jump is a reference point for the control unit to adjust the quality of the mixture.
It was established by two sensors. One - front, and the second - after the inverter. This provides a more accurate tracking of the composition of exhaust gases.
Exhaust gas recirculation
Exhaust gas recirculation reduces the amount of NOx in the exhaust gases. To do this, a small part of the exhaust gas is supplied to the intake manifold through a special valve. EGR valve is controlled by the control unit.
The system EVAP
To reduce the emission of unburned hydrocarbons on all petrol models established a system for collecting fuel. Petrol fuel filler cap is sealed, under the fuel tank installed carbon adsorber. In it are collected fuel vapors generated in the tank at the time of parking of a vehicle, and is stored there as long as the alarm control unit starts scavenging filter. Then the fuel vapor beginning to be fed through the valve (s) during the purge inlet conduit, where they are mixed with the working mixture and further combusted in a conventional manner in the combustion chambers.
To ensure the normal operation of the engine at idle and during the warm-up control unit keeps the valve closed. This prevents unburned fuel from entering into the inverter (at high idle mixture pereobogaschena). After warming up the engine valve starts to open and close, feeding fuel vapor into the intake tract.
Diesel models
The engine management system operates in such a way to get the most out of the engine with minimum fuel consumption and emissions. To further reduce the toxicity of gas on the car set several additional systems. Crankcase ventilation system reduces the leakage of gases into the atmosphere from the engine lubrication system. The catalytic converter reduces exhaust emissions. Installed exhaust gas recirculation.
System of operated ventilation crankcase
To eliminate leakage of unburned hydrocarbons into the atmosphere the engine completely sealed. Gases and oil vapors formed in said housing, fall through the mesh filter in the inlet conduit, and combusted in the cylinders with the fuel.
Gases are removed from the crankcase due to the pressure difference in the intake manifold and the crankcase (crankcase pressure above). All diesel models installed ventilation valve. It is located on the cylinder head cover and controls the flow of gases from the crankcase.
Exhaust gas recirculation
All diesel models are also installed exhaust gas recirculation. This system reduces the amount of NOx in the exhaust gases. To do this, a small part of the exhaust gas is supplied to the intake manifold through a special valve. EGR valve is controlled by the control unit.
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