Amendment procedures for wealth measurement derivatives

摘要

The invention relates to a method for correcting the wealth measurement drift of a first wealth probe (4a) in an assembly including a heat engine (1) connected to an exhaust pipe including a catalyst (3),The first wealth probes (4a, 4b) are respectively installed upstream and downstream of the catalyst (3),A first wealth adjustment device calculated from the first probe (4a),A second wealth adjustment device calculated according to the second probe (4b),It is characterized in that the gap between the wealth calculated by the first and second adjustment devices is determined, the correction of the second wealth adjustment device is determined, and the wealth measurement drift of the first wealth probe is determined according to the sum of the gap and the correction, The measured value of the first probe (4a) was recalibrated with the determined drift value.Figure 2