Transmission control device
First Claim
1. A transmission control device including a frictional coupling element and a lockup clutch of a hydraulic transmission device, which are provided on a driving-power transmitting path between an engine and a driving wheel and adaptive respectively to control a slip state between an input element and an output element thereof, comprising:
- first control means for controlling a slip state of the frictional coupling element;
second control means for controlling a slip state of the lockup clutch;
driving condition detecting means for detecting a driving condition of a vehicle;
classification means for classifying the vehicle driving condition detected by said driving condition detecting means into a region;
determination means for determining when the vehicle is not at a gear shift timing; and
association control means for executing a control to associate said first control means with said second control means according to a classification result by said classification means, when it is determined by said determination means that the vehicle is not at the gear shift timing.
1 Assignment
0 Petitions
Accused Products
Abstract
In an automatic transmission including a forward clutch and a lockup clutch of a torque converter which are provided on a driving-power transmitting path between an engine and a driving wheel, a vehicle driving condition is classified into a plurality of regions and an associated slip control between the forward clutch and the lockup clutch is executed. Accordingly, both of improvements of gas mileage and drivability can be attained at a high level.
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Citations
15 Claims
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1. A transmission control device including a frictional coupling element and a lockup clutch of a hydraulic transmission device, which are provided on a driving-power transmitting path between an engine and a driving wheel and adaptive respectively to control a slip state between an input element and an output element thereof, comprising:
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first control means for controlling a slip state of the frictional coupling element;
second control means for controlling a slip state of the lockup clutch;
driving condition detecting means for detecting a driving condition of a vehicle;
classification means for classifying the vehicle driving condition detected by said driving condition detecting means into a region;
determination means for determining when the vehicle is not at a gear shift timing; and
association control means for executing a control to associate said first control means with said second control means according to a classification result by said classification means, when it is determined by said determination means that the vehicle is not at the gear shift timing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A transmission control device including a frictional coupling element and a lockup clutch of a hydraulic transmission device, which are provided on a driving-power transmitting path between an engine and a driving wheel and adaptive respectively to control a slip state between an input element and an output element thereof, comprising:
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a first control device adaptive to control a slip state of the frictional coupling element;
a second control device adaptive to control a slip state of the lockup clutch;
a driving condition detecting sensor adaptive to detect a driving condition of a vehicle; and
a control unit which receives a detecting signal of said driving condition detecting sensor and generates a control signal to said first and second control devices, wherein said control unit includes classification section for classifying the vehicle driving condition detected by said driving condition detecting sensor into a region, determination section for determining when the vehicle is not at a gear shift timing, and association control section for executing a control to associate said first control device with said second control device according to a classification result by the classification section when the vehicle is not at the gear shift timing. - View Dependent Claims (12, 13, 14, 15)
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Specification