| 摘要 |
Method for adapting the signal (») measured by a lambda probe (25) for detecting the concentration of oxygen operating in an exhaust line (24) of an internal combustion engine (10) of a vehicle, of the type comprising acquiring (35, 33) in processing means (30), in particular in an engine control unit, said measured signal (») and performing a correction of values (Om) obtained from said signal (») measured by said lambda probe (25) in an operating condition of the engine (19) in which there are exhaust gases in said exhaust line (24) through the phases of:
obtaining (1032) adaptation values (Ot) from the signal (») measured by said lambda probe (25) in a determined engine operating phase (10) wherein in said exhaust line (24) there are no exhaust gases, and
comparing (1034) said adaptation values (Ot) of the signal (») measured with expected values (Or) for a reference oxygen concentration,
calculating (1036) an adaptation factor (Fc) as a function of said adaptation values (Ot) and expected values (Or) to be used in said operation for correcting values (Or) obtained from said signal (») measured by said lambda probe (25) in an operating condition of the engine (19) in which there are exhaust gases, According to the invention, said operation (1032) for obtaining adaptation values (Ot) from the signal (») measured by said lambda probe (25) in a determined engine operating phase (10) wherein in said exhaust line (24) there are no exhaust gases is carried out in a phase (SO) for shutting off the engine (10) wherein the injection (21, 22) of fuel is at zero. |
