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The fuel injection system MFI

A fuel injection system uses signals from the MFI of the heated oxygen sensor for a correction mode fuel injector mounted in the intake manifold for each cylinder, and enables precise adjustment ratio of air and fuel to reduce emissions.
This provides an output from an exhaust gas composition which can be further purified in a three-way catalyst.

Three-way catalytic converter for converting the three harmful substances (1), hydrocarbons (HC), (2) monokisi carbon monoxide (CO) and (3), nitrogen oxides (NO _x), into harmless substances.