Audi A4, S4
Controls and receptions of safe operation
Current leaving and service
Systems of cooling, heating and the air conditioner
- Power supply systems, release and decrease in toxicity of the fulfilled gases
Power supply systems of petrol and diesel engines
System of injection of fuel of the petrol engine
System of injection of fuel of the diesel engine
- Systems of release and decrease in toxicity of the fulfilled gases. Турбокомпрессор
Removal and installation of system of release. Replacement of the central, additional muffler, a trailer pipe
Updating of a lining of system of release / a trailer pipe
Systems of decrease in toxicity of release - the general information
The Katalitichesky converter
Removal and installation catalytic the converter and ljambda-probes
Турбокомпрессор - the general information and safety measures
Интеркулер - the general information
Systems of an electric equipment of the engine
Manual box of a gear change
Coupling, power shafts and differential
Suspension bracket and steering
Onboard electric equipment
The Katalitichesky converter
The Katalitichesky converter has the central ceramic part of a cellular design-3 covered with a layer of the carrier. On a carrier layer there are the salts of precious metals operating as converters. The Katalitichesky converter is fixed in the case by-1 means изоляционного the basic layer-2 compensating simultaneously thermal expansions catalytic of the converter (address to an illustration the Arrangement of elements of system of injection in a compartment of the diesel engine 2.5).
To reduce with the help catalytic the converter harmful emissions, injection systems should dose out precisely quantity of the injected fuel necessary for combustion. The Ljambda-probe is in a reception pipe before catalytic the converter and is washed by a stream of the fulfilled gases. The Ljambda-probe represents the electronic gauge measuring the maintenance of oxygen in final gases and representing its kind of fluctuations of pressure. The information from a ljambda-probe is transferred to the block of management of system of injection. The received value allows to regulate structure of an air-petrol mix. On the one hand it is necessary, as service conditions (the idling, full gas), on the other hand, constantly change as optimum reburning of fuel in каталитическом the converter occurs only in this case if in final gases fuel enough contains.
That in каталитическом the converter there was a fuel reburning, it is necessary to have temperature 300 - 800С. For this purpose it is necessary большее the fuel maintenance in a mix, than for pure burning.
The Katalitichesky converter of the petrol engine represents so-called трёхфункциональное the device. In adjustable process of transformation oxidation окиси carbon (WITH) and hydrocarbon (NANOSECOND), and also concentration reduction оксидов nitrogen (NOx) is carried out.
Security measures for an exception of damages catalytic the converter
For an exception of damages of a ljambda-probe and catalytic the converter it is necessary to fulfil following requirements:
Petrol and diesel engines