Diagnostic systems for turbocharged engines

Claim 3

The method of claim 1 , wherein the disabling step further comprises disabling the first hardware sensor if the difference between the actual and predicted values has exceeded the predetermined amount a predetermined number of times or has occurred continuously over a predetermined period of time.

Claim 4

The method of claim 1 , wherein the generating step further comprises adjusting an engine operation based on the actual value if the difference is less than the predetermined amount.

Claim 5

The method of claim 1 , further comprising adjusting an engine operation based on the predicted value when the difference is greater than the predetermined amount.

Claim 6

The method of claim 1 , further comprising determining whether a fault exists in the first hardware sensor.

Claim 9

The method of claim 6 , further comprising: disabling the first hardware sensor if the difference between the actual and predicted values has exceeded the predetermined amount a predetermined amount of times or has occurred continuously over a predetermined period of time; and controlling operation of an engine based on the predicted value.

Claim 10

The method of claim 6 , further comprising adjusting an engine operation using the predicted value when the difference between the actual and predicted values is greater than a predetermined amount.

Claim 11

The method of claim 6 , further comprising determining whether a fault exists in the first hardware sensor.

Claim 12

A machine-readable storage medium having stored thereon machine executable instructions, the execution of said instructions adapted to implement a method for diagnosing abnormal operation in a turbocharged engine having an engine control module (ECM) operable to control engine operation in response to data received from a plurality of sensors, the method comprising: storing in a memory data corresponding to: a compressor map defining a region of compressor efficiency and compressor speeds during operation; and a turbine map defining a region of turbine efficiency and turbine speeds during operation; determining a predicted value for an operating parameter measured by a first hardware sensor using data received from at least a second hardware sensor and the at least one of the compressor map and the turbine map; determining an actual value for the operating parameter using data received from the first hardware sensor; generating an abnormal operation signal if a difference between actual and predicted values is greater than a predetermined amount; disabling the first hardware sensor if the difference between the actual and predicted values has exceeded the predetermined amount a predetermined number of times or has occurred continuously over a predetermined period of time; and controlling operation of an engine based on the predicted value.

Claim 13

A machine-readable storage medium having stored thereon machine executable instructions, the execution of said instructions adapted to implement a method for diagnosing abnormal operation in a turbocharged engine having an engine control module (ECM) operable to control engine operation in response to data received from a plurality of sensors, the method comprising: storing in a memory data corresponding to: a compressor map defining a region of compressor efficiency and compressor speeds during operation; and a turbine map defining a region of turbine efficiency and turbine speeds during operation; determining a predicted value for an operating parameter measured by a first hardware sensor using data received from at least a second hardware sensor and the at least one of the compressor map and the turbine map; determining an actual value for the operating parameter using data received from the first hardware sensor; generating an abnormal operation signal if a difference between actual and predicted values is greater than a predetermined amount; disabling the first hardware sensor if the difference between the actual and predicted values has exceeded the predetermined amount a predetermined number of times or has occurred continuously over a predetermined period of time; and controlling operation of an engine based on the predicted value.

Claim 14

The machine-readable storage medium of claim 10 , wherein the generating step further comprises adjusting an engine operation based on the actual value if the difference is less than the predetermined amount.

Claim 15

The machine-readable storage medium of claim 10 , further comprising: adjusting an engine operation based on the predicted value when the difference is greater than the predetermined amount; and determining whether a fault exists in the first hardware sensor.

Claim 16

A machine-readable storage medium having stored thereon machine executable instructions, the execution of said instructions adapted to implement a method for training an artificial neural network (ANN), the method comprising: determining a predicted value for an operating parameter measured by a first hardware sensor using data received from the ANN; determining an actual value for the operating parameter using data received from the first hardware sensor; and using the actual value to train the ANN if a difference between the predicted and actual values is less than a predetermined amount.

Claim 17

A machine-readable storage medium having stored thereon machine executable instructions, the execution of said instructions adapted to implement a method for training an artificial neural network (ANN), the method comprising: determining a predicted value for an operating parameter measured by a first hardware sensor using data received from the ANN; determining an actual value for the operating parameter using data received from the first hardware sensor; and using the actual value to train the ANN if a difference between the predicted and actual values is less than a predetermined amount.

Claim 18

The machine-readable storage medium of claim 13 , further comprising: disabling the first hardware sensor if the difference between the predicted and actual values has exceeded the predetermined amount a predetermined amount of times or has occurred continuously over a predetermined period of time; and controlling operation of an engine based on the predicted value.

Claim 19

The machine-readable storage medium of claim 13 , further comprising: adjusting an engine operation based on the predicted value when the difference is greater than the predetermined amount; and determining whether a fault exists in the first hardware sensor.

Claim 22

The apparatus of claim 16 , wherein the generating module further comprises a module configured to adjust an engine operation based on the actual value if the difference is less than the predetermined amount.

Claim 23

The apparatus of claim 16 , further comprising: a module configured to adjust an engine operation based on the predicted value when the difference is greater than the predetermined amount; and a module configured to determine whether a fault exists in the first hardware sensor.

Claim 24

The apparatus of claim 16 , wherein the plurality of modules comprise functionally related computer program code and data.

Claim 27

The apparatus of claim 20 , further comprising: a module configured to disable the first hardware sensor if the difference between the predicted and actual values has exceeded the predetermined amount a predetermined amount of times or has occurred continuously over a predetermined period of time; and a module configured to control operation of an engine based on the predicted value.

Claim 28

The apparatus of claim 20 , further comprising: a module configured to adjust an engine operation using the predicted value when the difference between the predicted and actual values is greater than a predetermined amount; and a module configured to determine whether a fault exists in the first hardware sensor.

Claim 29

The apparatus of claim 20 , wherein the plurality of modules comprise functionally related computer program code and data.