Control system for transmissions

Claim 2

A control system for a transmission (2), which has shift control means (13) for outputting a shift instruction signal on the basis of a predetermined shift pattern and road data detecting means (20) for detecting the road data of a route to be followed by a vehicle, comprising: brake detecting means (13) for detecting the execution of the braking operation in said vehicle; and shift pattern control means (13) for setting a shift pattern for a curve, as having a control content for making it liable to set a larger gear ratio, as said shift pattern when the execution of the braking operation is detected by said brake detecting means (13) and when a curved road is detected in the route to be followed, by said road data detecting means (20).

Claim 3

A control system for a transmission (2), which has shift control means (13) for outputting a shift instruction signal on the basis of a predetermined shift pattern and road data detecting means (20) for detecting the road data of a route to be followed by a vehicle, comprising: shift pattern control means (13) for setting a shift pattern for entrance, as having a control content for making it liable to set a larger gear ratio, as said shift pattern when it is detected by said road data detecting means (20) that the route to be followed by said vehicle is an freeway.

Claim 4

A control system for a transmission (2), which has shift control means (13) for outputting a shift instruction signal on the basis of a predetermined shift pattern and road data detecting means (20) for detecting the road data of a route to be followed by a vehicle, comprising: shift pattern control means (13) for setting a shift pattern for a low-µ road, as having a control content for making it liable to set a gear ratio smaller than the highest gear ratio, as said shift pattern when it is detected by said road data detecting means (20) that the route to be followed by said vehicle is a road having a low coefficient of road surface friction.

Claim 5

A control system for a transmission (2), which has shift control means (13) for outputting a shift instruction signal on the basis of a predetermined shift pattern and road data detecting means (20) for detecting the road data of a route to be followed by a vehicle, comprising: shift pattern control means (13) for setting a shift pattern for urban areas, as having a control content for making it liable to set a lower gear ratio, as said shift pattern when it is detected by said road data detecting means (20) that the route to be followed by said vehicle belongs to the urban areas.

Claim 6

A control system for a transmission (2), which has shift control means (13) for outputting a shift instruction signal on the basis of a predetermined shift pattern road data detecting means (20) for detecting the road data of a route to be followed by a vehicle and shift pattern control means (13) for setting a shift pattern having a control content for making it liable to set a larger gear ratio, as said shift pattern when it is detected by said road data detecting means (20) that the route to be followed by said vehicle is a downslope having a downward gradient larger than a reference value, comprising: downslope decision changing means (13) for changing said reference value when it is decided by said road data detecting means (20) that said downslope is a curved road.

Claim 7

A control system for a transmission (2), which has shift control means (13) for outputting a shift instruction signal on the basis of a predetermined shift pattern and road data detecting means (20) for detecting the road data of a route to be followed by a vehicle, comprising: brake detecting means (13) for detecting the execution of the braking operation in said vehicle; shift inhibiting means (13) for inhibiting the shift in said transmission (2) when it is detected by said brake detecting means (13) that the route to be followed by said vehicle is a curved road and when the braking operation is detected by said brake detecting mean(13); and shift inhibition releasing means (13) for allowing the shift in said transmission (2) when the end of the curved road is detected by said road data detecting means (20).

Claim 8

A control system for a transmission (2), which has shift control means (13) for outputting a shift instruction signal on the basis of a predetermined shift pattern road data detecting means (20) for detecting the road data of a route to be followed by a vehicle and shift pattern control means (13) for setting a shift pattern having a control content for making it liable to set a larger gear ratio, as said shift pattern when it is detected by said road data detecting means (20) that the route to be followed by said vehicle is a curved road, comprising: straight road run detecting means (20) for detecting at least one of the distance of a straight road between curved portions in the route to be followed by said vehicle and the time required for passing said straight road, wherein said shift pattern control means (13) includes means (13) for setting a shift pattern for an intermediate straight road, as having a control content for making it liable to set a higher gear ratio, as said shift pattern at the time of running said straight road when said distance or said required time, as detected by said straight road run detecting means, is less than a predetermined reference value.

Claim 9

A control system for a transmission (2), which has shift control means (13) for outputting a shift instruction signal on the basis of a predetermined shift pattern road data detecting means (20) for detecting the road data of a route to be followed by a vehicle and shift pattern control means (13) for setting a shift pattern for an upslope/downslope, as having a control content for making it liable to set a larger gear ratio, as said shift pattern when an upslope/downslope is detected in the route to be followed by said vehicle, comprising: upslope/downslope run detecting means (20) for detecting any of the distance of a flat road between the upslopes/downslopes in the route to be followed, the time required for passing said flat road, the distance of an upslope/downslope between flat roads and the time required for passing said upslope/downslope, on the basis of the road data, as obtained by said road data detecting means (20), and/or the running state; and upslope/downslope control decision means (13) for deciding the beginning or end of the shift instruction control, as based on said upslope/downslope shift pattern, in accordance with the distance or the required time, as detected by said upslope/downslope run detecting means (20).

Claim 10

A control for a transmission (2), which has road data detecting means (20) for detecting the road data of a route to be followed by a vehicle, comprising: comparison means (13) for comparing a first gear ratio, which is determined by the shift control based on the road data obtained by said road data detecting means (20), and a second gear ratio which is determined by the shift control based on the actual running state or the road situations; and shift instructing means (13) for selecting any of the shift controls on the basis of the comparison result to instruct a shift output by the selected shift control.

Claim 11

A control system for a transmission (2) according to any of the preceding Claims 1 to 10, further comprising driving tendency decision means (13) for deciding the driving tendency of the driver of said vehicle; and shift correction control means (13) for correcting the control content of said gear ratio on the basis of the driving tendency, as decided by said driving tendency decision means (13).