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US 4,905,786 AGranted
Vehicle speed control system for motor vehicle having an automatic transmission control system
AssigneeAisin Seiki Kabushiki Kaisha
InventorsOsamu Miyake, Nobuyasu Suzumura, Shoji Kawata
Life of this patent
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Abstract
A vehicle speed control system for a motor vehicle having an automatic transmission control system includes first reference data for exclusive use with only automatic transmission control and second reference data for exclusive use with both automatic transmission control and vehicle speed control. The second reference data is for decreasing the chance of a gear ratio change by comparison with the first reference data.
Claims13
A vehicle speed control system for a motor vehicle having an internal combustion engine with a throttle, an automatic transmission and an automatic transmission control system, comprising:
- vehicle speed detecting means for generating a signal in accordance with a detected vehicle speed;
- a vehicle speed memory for memorizing said detected vehicle speed;
- set switch means for commanding memorization of a desired vehicle speed to said vehicle speed memory;
- throttle valve driving means operatively coupled to a throttle valve, for maintaining said detected vehicle speed at said memorized desired vehicle speed;
- throttle valve drive selecting for selectively actuating said throttle valve driving means;
- said transmission having a plurality of gear ratios;
- means for storing first and second reference data representing an intended gear ratio of said transmission in accordance with said vehicle speed and a throttle opening;
- reference data selecting means for selecting said first reference data at a time when said throttle valve driving means is not actuated, and for selecting said second reference data at a time when said throttle valve driving means is actuated;
- and
- gear ratio changing means for changing the gear ratio of said transmission to said intended gear ratio in accordance with reference data selected by said reference data selecting means, said first and second reference data being such that said gear ratio changing means changes the gear ratio of said transmission more often when said reference data selecting means selects the first reference data than when said reference data selecting means selects the second reference data.
7 more elements
A vehicle speed control system for a motor vehicle having an internal combustion engine with a throttle, an automatic transmission and an automatic transmission control system, comprising:
- vehicle speed detecting means for generating a signal in accordance with a detected vehicle speed;
- a vehicle speed memory for memorizing said detected vehicle speed;
- set switch means for commanding memorization of a desired vehicle speed to said vehicle speed memory;
- throttle valve driving means, operatively coupled to a throttle valve, for maintaining said vehicle speed at said desired memorized vehicle speed;
- throttle valve drive selecting means for selectively actuating said throttle valve driving means;
- said transmission having a plurality of gear ratios;
- means for storing reference data representing an intended gear ratio in accordance with said detected vehicle speed and a throttle opening;
- reference data selecting means for selecting reference data in accordance with said detected vehicle speed and throttle opening;
- gear ratio changing means for changing the gear ratio of said transmission to said intended gear ratio in accordance with the reference data selected by said reference data selecting means;
- timer means for causing said gear ratio changing means to change the gear ratio of said transmission to said intended gear ratio during a preset time, the preset time being selected in accordance with a deviation between said memorized desired vehicle speed and a detected vehicle speed, and said timer means being actuated during a time that said throttle valve driving means is actuated.
7 more elements
A vehicle speed control system for a motor vehicle having an internal combustion engine with a throttle, an automatic transmission and an automatic transmission control system, comprising:
- vehicle speed detecting means for generating a signal in accordance with a detected vehicle speed;
- a vehicle speed memory for memorizing said detected vehicle speed;
- set switch means for commanding memorization of a desired vehicle speed to said vehicle speed memory;
- throttle valve driving means, operatively coupled to a throttle valve, for maintaining said vehicle speed at said memorized desired vehicle speed;
- throttle valve drive selecting means for selectively actuating said throttle valve driving means;
- said transmission having a plurality of gear ratios;
- means for storing reference data representing an intended gear ratio in accordance with said detected vehicle speed and a throttle opening;
- reference data selecting means for selecting reference data in accordance with said detected vehicle speed and a throttle opening;
- gear ratio changing means for changing the gear ratio of said transmission to said intended gear ratio in accordance with reference data selected by said reference data selecting means;
- and
- timer means for inhibiting an upshift of said transmission to said intended gear ratio during a preset time after a downshift of said transmission, said timer means being actuated during a time when said throttle valve driving means being actuated.
8 more elements
A vehicle speed control system for a motor vehicle having an internal combustion engine with a throttle, an automatic transmission and an automatic transmission control system, comprising:
- vehicle speed detecting means for generating a signal in accordance with a detected vehicle speed;
- a vehicle speed memory for memorizing said detecting vehicle speed;
- set switch means for commanding memorization of a desired vehicle speed to said vehicle speed memory;
- throttle valve driving means, operatively coupled to a throttle valve, for maintaining said vehicle speed at said memorized desired vehicle speed;
- throttle valve drive selecting means for selectively actuating said throttle valve driving means;
- said transmission having a plurality of gear ratios;
- means for storing reference data representing an intended gear ratio in accordance with said detected vehicle speed and a throttle opening;
- reference data selecting means for selecting reference data in accordance with said detected vehicle speed and a throttle opening;
- gear ratio changing means for changing the gear ratio of said transmission to said intended gear ratio in accordance with reference data selected by said reference data selecting means;
- and
- timer means for delaying an upshift of said transmission to said intended gear ratio during a preset time after a determination of an upshift, said timer means being actuated during a time when said throttle valve driving means actuated.
8 more elements
A vehicle speed control system for a motor vehicle having an internal combustion engine with a throttle, an automatic transmission and an automatic transmission control system, comprising:
- vehicle speed detecting means for generating a signal in accordance with a detected vehicle speed;
- a vehicle speed memory for memorizing said detected vehicle speed;
- set switch means for commanding memorization of a desired vehicle speed to said detected vehicle speed memory;
- throttle valve driving means, operatively coupled to a throttle valve, for maintaining said detected vehicle speed at said memorized desired vehicle speed;
- throttle valve drive selecting means for selectively actuating said throttle valve driving means;
- said transmission having a plurality of gear ratios;
- means for storing reference data representing an intended gear ratio and a lockup state of said transmission in accordance with said detected vehicle speed and a throttle opening;
- gear ratio changing means for changing the gear ratio of said transmission to said intended gear ratio represented by said reference data;
- lockup clutch control means for controlling a lockup clutch in accordance with said lockup state set by said reference data;
- and
- lockup inhibiting means for controlling said lockup clutch control means so as to inhibit said lockup clutch when a deviation between said memorized desired vehicle speed and a detected vehicle speed is larger than a preset value, said lockup inhibiting means being actuated at a time when said throttle valve driving means is actuated.
8 more elements
Dependencies are inferred from the claim text.