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1.2L REVOTRON ENGINE
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2. Lambda Sensor :
The oxygen sensor operates on the principle of
galvanic oxygen concentration cell (Nernst cell)
with solid electrolyte (Nernst's principle). The
ceramic sensing element is a conductor of oxygen
ions from a temperature of 350°C. A heater is
integrated on the sensing element. It is placed
into the exhaust manifold. The sensing element
compares the residual oxygen content in the
exhaust gas with the oxygen content in the
reference atmosphere (air surrounding the
sensing element). This gives an output voltage
between 100mV (lean exhaust gas) to 800mV
(rich exhaust gas), depending on whether the
exhaust gas is lean or rich.
3. Close Coupled Catalytic Converter (CCC) :
The Close Coupled Catalytic Converter is a
critical element of the system used to reduce
vehicle exhaust emissions. The catalytically active
element within the converter lowers the activation
energy needed to selectively transform harmful
combustion products into less harmful gases. The
catalyst becomes active when it reaches a
threshold temperature.
Close coupled Catalytic Converter is physically
positioned very close to the engine exhaust ports
to enable quicker light-off.
Benefits
-:
Positioned close to the engine exhaust ports
for fast light-off and reduced cold start
emissions.
Internally insulated construction design
enables improved durability, reduced heat
rejection and lower noise.
4. Muffler Assembly :
The main function of the silencer is to reduce
the amount of noise emitted by the engine
exhaust gases flow. It typically makes use of
the change in the cross sectional area which
can be made as a chamber to filter or reduce
the sound waves which the engine produces.
The silencers are divided into three main groups.
i)
Exhaust pipe front
ii) Exhaust Pipe Assy. with Pre-silencer
iii) Exhaust Assy., Rear (Main Silencer)