Clutch control for automated manual transmission (AMT)
First Claim
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1. A vehicle having an engine and an automated manual transmission (AMT), comprising:
- an electronically controlled clutch (ECC) that selectively couples said engine and said AMT to transfer drive torque to said AMT; and
a controller that communicates with said ECC and said engine and that generates a load signal based on an anticipated engine load, that adjusts one of spark timing of said engine and an ECC pressure based on said load signal prior to engagement of said ECC and that adjusts spark timing of said engine based on a rate of change of engine speed after engagement of said ECC.
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Abstract
A vehicle having an engine and an automated manual transmission (AMT) includes an electronically controlled clutch (ECC) that selectively couples the engine and the AMT to transfer drive torque to the AMT. A controller communicates with the ECC and the engine and generates a load signal based on an anticipated engine load. The controller adjusts spark timing of the engine based on the load signal prior to engagement of the ECC. The controller adjusts spark timing of the engine based on a rate of change of engine speed after engagement of the ECC.
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Citations
14 Claims
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1. A vehicle having an engine and an automated manual transmission (AMT), comprising:
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an electronically controlled clutch (ECC) that selectively couples said engine and said AMT to transfer drive torque to said AMT; and
a controller that communicates with said ECC and said engine and that generates a load signal based on an anticipated engine load, that adjusts one of spark timing of said engine and an ECC pressure based on said load signal prior to engagement of said ECC and that adjusts spark timing of said engine based on a rate of change of engine speed after engagement of said ECC. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operating an automated manual transmission (AMT) having an electronically controlled clutch (ECC) that is selectively engaged to couple said AMT and said engine, comprising:
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generating a load signal;
adjusting one of spark timing of said engine and an ECC pressure based on said load signal prior to engagement of said ECC; and
adjusting spark timing of said engine based on a rate of change of engine speed after engagement of said ECC. - View Dependent Claims (7, 8, 9, 10)
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11. A method of shifting gears of an automated manual transmission (AMT) having an electronically controlled clutch (ECC), comprising:
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initiating engagement of said ECC;
detecting a degree of engagement of said ECC;
generating a load signal upon detecting near full engagement of said ECC;
adjusting spark timing of said engine based on said load signal prior to full engagement of said ECC; and
adjusting spark timing of said engine based on a rate of change of engine speed after engagement of said ECC. - View Dependent Claims (12, 13, 14)
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Specification