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AssigneeVolvo Truck Corporation
InventorsJosé Luis Martinez Gordon, Hervé Queret, Damien Daulon, Franck Chagnot Auclair
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The invention relates to a method for automatically detecting clogging of a sensor pipe extending between a pressure sensor and an exhaust manifold of an internal combustion engine, wherein the pressure sensor enables to record a signal representative of the relative pressure over time. The method includes at least one of the following steps: a) determining, while the engine runs in a steady operation state, an average amplitude of oscillations of the signal over a first period of time, the sensor pipe being considered clogged when said average amplitude is lower than a first threshold; b) monitoring, from the time the engine has been turned off, the signal over a second period of time, the sensor pipe being considered clogged when the integral of the signal is greater than a second threshold.
A method for automatically detecting clogging of a sensor pipe extending between a pressure sensor and an exhaust manifold of an internal combustion engine, wherein the pressure sensor enables to record a signal representative of the relative pressure over time wherein the method includes at least one of the following steps:
The internal combustion engine assembly according to preceding claim, wherein the internal combustion engine comprises a four-stroke engine.
Dependencies are inferred from the claim text.