Engine transmission control system
First Claim
Patent Images
1. A control system for an engine-transmission powertrain of a vehicle having a transmission to establish various speed ratios between input and output shafts of the transmission, an accelerator pedal with various positions including a released position, and an engine with various output torque levels, the control system comprising:
- a vehicle navigation system including a map database with map information including kinds of roadways, said vehicle navigation system being operable to provide information as to a current position of the vehicle and information as to a kind of roadway which the current vehicle position is on;
a ramp detection unit operatively connected with said vehicle navigation system to determine whether or not the vehicle is on a ramp;
an accelerator pedal sensor operatively connected to the accelerator pedal to detect operator demand by detecting current position of the accelerator pedal; and
a controller, which receives output signals of said ramp detection unit and said accelerator pedal sensor, and generates a command upon determination by said ramp detection unit that the vehicle is on the ramp and applying said command to the engine transmission powertrain, affecting control of the engine-transmission powertrain to meet the detected operator demand.
1 Assignment
0 Petitions
Accused Products
Abstract
A control system for an engine-CVT powertrain controls the target driving force during traveling on a ramp to meet operator power demand and/or the target input speed of the CVT to accomplish the ramp target window during traveling on the ramp to meet operator deceleration command.
22 Citations
18 Claims
-
1. A control system for an engine-transmission powertrain of a vehicle having a transmission to establish various speed ratios between input and output shafts of the transmission, an accelerator pedal with various positions including a released position, and an engine with various output torque levels, the control system comprising:
-
a vehicle navigation system including a map database with map information including kinds of roadways, said vehicle navigation system being operable to provide information as to a current position of the vehicle and information as to a kind of roadway which the current vehicle position is on;
a ramp detection unit operatively connected with said vehicle navigation system to determine whether or not the vehicle is on a ramp;
an accelerator pedal sensor operatively connected to the accelerator pedal to detect operator demand by detecting current position of the accelerator pedal; and
a controller, which receives output signals of said ramp detection unit and said accelerator pedal sensor, and generates a command upon determination by said ramp detection unit that the vehicle is on the ramp and applying said command to the engine transmission powertrain, affecting control of the engine-transmission powertrain to meet the detected operator demand. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A control method for an engine-transmission powertrain of a vehicle having a transmission to establish various speed ratios between input and output shafts of the transmission, an accelerator pedal with various positions including a released position, and an engine with various output torque levels, the control method comprising:
-
determining whether or not the vehicle is on a ramp;
detecting operator demand by detecting current position of the accelerator pedal; and
generating a command upon determination that the vehicle is on the ramp and applying said command to the engine-transmission powertrain, affecting control of the engine-transmission powertrain to meet the detected operator demand.
-
-
18. A control system for an engine-transmission powertrain of a vehicle having a transmission to establish various speed ratios between input and output shafts of the transmission, an accelerator pedal with various positions including a released position, and an engine with various output torque levels, the control system comprising:
-
means for determining whether or not the vehicle is on a ramp;
means for detecting operator demand by detecting current position of the accelerator pedal; and
means for generating a command upon determination that the vehicle is on the ramp and applying said command to the engine-transmission powertrain, affecting control of the engine-transmission powertrain to meet the detected operator demand.
-
Specification