Vehicle control device
First Claim
1. A control system for a vehicle, said system comprising:
- a vehicle speed detector generating an output signal representative of a speed of said vehicle;
target speed setting means for setting a target speed of said vehicle;
target acceleration setting means, connected to said vehicle speed detector and said target speed setting means, for generating a target vehicle acceleration based on said vehicle speed detector output signal and said set target speed;
a throttle opening controller controlling an opening degree of an engine throttle in the vehicle responsive to said target vehicle acceleration;
target drive torque setting means for setting a target drive torque for wheels of said vehicle; and
automatic transmission control means for, responsive to said set target speed and said set target drive torque, setting a speed reduction ratio in an automatic transmission of the vehicle and controlling the transmission to provide said set target drive torque while consuming a minimum volume of fuel.
1 Assignment
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Accused Products
Abstract
To control the speed reduction ratio SLIP of an automatic transmission and a throttle opening TA of a vehicle engine to minimize fuel consumption while satisfying the driving needs of the vehicle'"'"'s driver, a target acceleration setting section sets a target acceleration GT based on a target speed VTX and an actual speed SPD selected by a target speed selection section. A target drive torque setting section sets a target drive torque TDRV based on an actual speed SPD and the target acceleration GT. The target drive torque TDRV set in this way is input to a speed reduction ratio control section, and the speed reduction ratio control section controls the speed reduction ratio SLIP and lockup state XLU of the automatic transmission so that the target drive torque TDRV is achieved and fuel consumption is minimized based on the target drive torque TDRV and the target speed VTX. A target throttle opening setting section computes and sets a target throttle opening TTA based on the actual speed SPD, the target acceleration GT, the speed reduction ratio SLIP and the lockup state XLU.
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Citations
12 Claims
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1. A control system for a vehicle, said system comprising:
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a vehicle speed detector generating an output signal representative of a speed of said vehicle; target speed setting means for setting a target speed of said vehicle; target acceleration setting means, connected to said vehicle speed detector and said target speed setting means, for generating a target vehicle acceleration based on said vehicle speed detector output signal and said set target speed; a throttle opening controller controlling an opening degree of an engine throttle in the vehicle responsive to said target vehicle acceleration; target drive torque setting means for setting a target drive torque for wheels of said vehicle; and automatic transmission control means for, responsive to said set target speed and said set target drive torque, setting a speed reduction ratio in an automatic transmission of the vehicle and controlling the transmission to provide said set target drive torque while consuming a minimum volume of fuel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification