Renault

Renault Sport Technologies

Francois Ratinet

Eric Marcheguet

Christophe Laurens

Frederic Thevenod

Vasco Afonso

The invention concerns a method for controlling the opening of an internal combustion engine throttle valve body assembly, characterized in that it includes the following steps: specifically mapping the engine, limiting the opening angle of the throttle valve body assembly, and defining particular operating points requiring replacement of the usual mapping by the specific mapping.

Method for controlling the opening of a throttle valve body assembly

An apparatus and method for diagnosing the condition of a sensor in an internal combustion engine upstream from the catalytic converter. The diagnosis utilizes a signal from a second non-linear probe downstream from the catalytic converter. This signal is processed to give a signal that is filtered. The filtered signal is in turn compared with maximum and minimum values. The upstream probe is considered to be correct if the signal falls between these two values or faulty if it falls outside the values.

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Limours, France

Francois Ratinet