Abstract: A method for working out instruction cartography for a temperature at entry into a filter. The method determines for each combination, which includes a soot mass in a particle filter, a temperature at the filter output, an air flowrate through the filter and a soot combustion rate in the filter and is associated with a time t, a value assignable to the instruction, wherein the value is selected such that the filter output temperature remains less than a maximum permissible temperature after a pedal release at a time L.

Abstract: The invention relates to a method for regenerating a particle filter on the exhaust line of an internal combustion engine, in which fuel is injected into the exhaust tube upstream of an oxidation catalyst which is disposed upstream of the particle filter. The invention is characterised in that during regeneration: the injection of fuel into the exhaust tube is interrupted when the operation of the engine enters a critical zone (S2) defined by maximum load and speed limit values; the injection of fuel is re-established when the operation of the engine returns to the non-critical zone (S1); and, during the transient operating phases between the two zones (S1, S2), the volume flow rate of the exhaust gases is measured and, as a function of said measurement, the fuel injection rate is reduced or the fuel injection is deferred.

Abstract: A method for working out instruction cartography for a temperature at entry into a filter. The method determines for each combination, which includes a soot mass in a particle filter, a temperature at the filter output, an air flowrate through the filter and a soot combustion rate in the filter and is associated with a time t, a value assignable to the instruction, wherein the value is selected such that the filter output temperature remains less than a maximum permissible temperature after a pedal release at a time L.

Abstract: A method for controlling an engine including an oxidation catalytic converter. The method, if certain criteria are verified, calculates a maximum amount of fuel to be post-injected based on a measured air flow rate and a threshold operating temperature of the oxidation catalytic converter.

Abstract: The inventive system for estimating quantities of pollution compounds emitted in the exhaust gas of a diesel engine for a motor vehicle comprises means for regenerating a solid particle filter and an electronic control unit which manages the engine operation and is provided with one or several data memories. Said system also comprises one or several neurone networks (1) and networks (2) of input data representative for the engine operation and possibly for the vehicle motion, said data is available in the electronic control unit for managing the engine operation without an additional sensor. Said system also comprises means (4) for cumulating estimated quantities.

Abstract: A method of controlling elements used to execute the elementary functions of internal combustion engines. The method controls the elements using measurement signals provided by sensors, determines theoretical signals that have to be provided by reference sensors at a current operating point of the engine, determines deviations between the theoretical signals and the signals measured by the reference sensors, and establishes signal correction instructions for the elements according to the determined deviations.

Abstract: A method for controlling an internal combustion engine for regenerating an exhaust gas purifying mechanism arranged on an exhaust line of the engine during a phase of regeneration of the purifying mechanism. The method analyzes an exhaust gas composition solely downstream of the purifying mechanism and develops, based on the analysis, a control signal for the engine to modify an exhaust gas composition upstream of the purifying mechanism.

Abstract: The inventive system for estimating quantities of pollution compounds emitted in the exhaust gas of a diesel engine for a motor vehicle comprises means for regenerating a solid particle filter and an electronic control unit which manages the engine operation and is provided with one or several data memories. Said system also comprises one or several neurone networks (1) and networks (2) of input data representative for the engine operation and possibly for the vehicle motion, said data is available in the electronic control unit for managing the engine operation without an additional sensor. Said system also comprises means (4) for cumulating estimated quantities.

Abstract: The invention concerns a method for controlling the operating conditions of a probe (11) associated with means purifying (7) exhaust gases of an internal combustion engine (2), which consists in comparing an output signal of the probe with a reference value, and in acting on the probe (11) to decrease a difference between the output signal (S1) and the reference value.

Abstract: A method for controlling the operation conditions of a probe associated with a mechanism purifying exhaust gases of an internal combustion engine. The method compares an output signal of the probe with a reference value, and acts on the probe to decrease a difference between the output signal and the reference value.

Abstract: A method of controlling elements used to execute the elementary functions of internal combustion engines. The method controls the elements using measurement signals provided by sensors, determines theoretical signals that have to be provided by reference sensors at a current operating point of the engine, determines deviations between the theoretical signals and the signals measured by the reference sensors, and establishes signal correction instructions for the elements according to the determined deviations.

Abstract: The invention concerns a method for controlling an internal combustion engine (2) for regenerating exhaust gas purifying means (14) arranged on an exhaust line (4) of the engine (2), during a phase of regeneration of the purifying means (14), which consists in: analyzing an exhaust gas composition solely downstream of the purifying means (14), and developing based on said analysis a control signal for the engine (2) to modify an exhaust gas composition upstream of the purifying means (14).

Abstract: A method in which a first oxygen sensor is disposed on an exhaust pipe upstream from a nitrogen oxide trap, and development of a meaningful signal representative of the signal supplied by the sensor is monitored. A substantial increase of the meaningful signal, which is obtained following a variation resulting from a motor being switched from running on a lean mixture to running on a rich mixture, from a first plate having an essentially constant level is used as an indicator to control an end of a purge process. The method can be applied to diesel engines.