Method for controlling an internal combustion engine for regenerating exhaust gas purifying means and device therefor
AssigneeRENAULT s.a.s.
InventorsMarc Daneau, Bernard Dionnet, Stephane Cochet, Philippe Aucouturier, Jean-Claude Mollet
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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).
Claims11
1-10. (canceled)
A method for control of an internal combustion engine to regenerate an exhaust-gas purifying mechanism disposed on an exhaust line of the engine, comprising:
- analyzing a composition of exhaust gases solely downstream from the purifying mechanism during a phase of regeneration of the purifying mechanism;
- and
- creating a signal for control of the engine based on the analysis to modify the composition of the exhaust gases upstream from the purifying mechanism.
A control device for regeneration of an exhaust-gas purifying mechanism disposed on an exhaust line of an internal combustion engine, comprising:
- a control module configured to modify fuel injection;
- and
- an oxygen sensor disposed on the exhaust line directly downstream from the purifying mechanism;
- wherein, during a phase of regeneration of the purifying mechanism, the control module is configured to cause a modification of a composition of exhaust gases solely as a function of an output signal of the oxygen sensor.
Dependencies are inferred from the claim text.