Control system for vehicular automatic transmission
First Claim
1. A control system for controlling an automatic transmission in a vehicle, comprising:
- running status detecting means for detecting the running status of a vehicle;
shift control means for determining the gear stage of the automatic transmission in accordance with a shift control pattern responsive to the detected running status of the vehicle;
memory means for storing road information pertaining to roads to be run by the vehicle and a mileage map;
detection means for detecting the present location and running direction of the vehicle;
read means for reading out the road information, for roads to be traversed along a set route from the detected present location to the destination, from said memory means, on the basis of inputs for the detected present location and the destination;
estimation means for estimating the engine power required of the vehicle for travelling the set route, based on the read road information;
shift setting means for determining a set shift schedule to minimize fuel consumption on the set route, by applying the estimated engine power to the mileage map; and
change means for changing the shift control pattern of said shift control means to conform to the set shift schedule.
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Accused Products
Abstract
A control system for a vehicular automatic transmission which detects running status of the vehicle and includes a shift controller for controlling the gear stage of the automatic transmission in accordance with the detected running status of the vehicle. The control system further includes a memory for prestoring road information for roads to be run by the vehicle, present location detection and running direction detection. A reader reads out the road information for a set route from the present location to a destination, from the memory, on the basis of the detected present location and the destination input. The engine power required for the vehicle to travel the set route is estimated in accordance with the read road information. A shift schedule which minimizes the fuel consumption on the set route is determined by comparing the estimated engine power requirement with a prestored mileage map and the shift control pattern is changed in accordance with the determined shift schedule.
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Citations
9 Claims
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1. A control system for controlling an automatic transmission in a vehicle, comprising:
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running status detecting means for detecting the running status of a vehicle; shift control means for determining the gear stage of the automatic transmission in accordance with a shift control pattern responsive to the detected running status of the vehicle; memory means for storing road information pertaining to roads to be run by the vehicle and a mileage map; detection means for detecting the present location and running direction of the vehicle; read means for reading out the road information, for roads to be traversed along a set route from the detected present location to the destination, from said memory means, on the basis of inputs for the detected present location and the destination; estimation means for estimating the engine power required of the vehicle for travelling the set route, based on the read road information; shift setting means for determining a set shift schedule to minimize fuel consumption on the set route, by applying the estimated engine power to the mileage map; and change means for changing the shift control pattern of said shift control means to conform to the set shift schedule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification