초록 ▼

A system and method for detecting and correcting power imbalance between cylinder banks of an internal combustion engine utilizes, in one embodiment, temperature sensors at the exhaust manifolds for each cylinder bank. A differential temperature value .DELTA. is generated and used to determine which

A system and method for detecting and correcting power imbalance between cylinder banks of an internal combustion engine utilizes, in one embodiment, temperature sensors at the exhaust manifolds for each cylinder bank. A differential temperature value .DELTA. is generated and used to determine which cylinder requires modification of its operating conditions to equalize the power output between the opposing banks. In one embodiment, the sign of the value .DELTA. is used to determine which cylinder bank has the highest exhaust temperature, and the value .DELTA. is provided as a multiplier to engine operating algorithms implemented by the engine control computer to derate the subject cylinder bank. In another embodiment, the value .DELTA. is used to uprate the bank having the lower exhaust temperature, indicative of a lower power output.

대표청구항 ▼

[ What is claimed is:] [1.] For an internal combustion engine system having a plurality of banks of a plurality of cylinders and an engine control computer for controlling the operating conditions of each cylinder, a method for balancing the power output between each of said number of banks of cylin

[ What is claimed is:] [1.] For an internal combustion engine system having a plurality of banks of a plurality of cylinders and an engine control computer for controlling the operating conditions of each cylinder, a method for balancing the power output between each of said number of banks of cylinders, comprising:measuring the value of a sensed condition of at least two of the plurality of cylinder banks:comparing the value of the sensed condition between pairs of cylinder banks and generating a delta value indicative of the difference between such values;comparing the delta value with a predetermined threshold value indicative of a cylinder bank power imbalance condition; andif the delta value exceeds the threshold value, generating an imbalance signal indicating that the power output between the pair of cylinders is imbalanced.