Transmission controller and a method of use
First Claim
1. A system for controlling a transmission with an automotive vehicle, the automotive vehicle including a powertrain control module (PCM) and a governor pressure sensor coupled to the PCM, the system comprising:
- a controller system for sensing at least one parameter of the vehicle, the controller system modifying signal to the governor pressure sensor based upon the at least one parameter wherein the controller system allows for three different modes of operation;
a throttle position mode wherein the signal is only modified dependent on a throttle position, a speed mode wherein the signal is only modified dependent on speed, and a combination mode wherein the signal is modified dependent upon both the throttle position and the speed.
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Abstract
A system and method for controlling a transmission with an automotive vehicle is disclosed. The automotive vehicle includes a powertrain control module (PCM) and a governor pressure sensor coupled to the PCM. The system and method comprises a controller system for sensing at least one parameter of the vehicle. The controller system modifies an excitation voltage to the governor pressure sensor based upon the at least one parameter. A system and method in accordance with the present invention compensates the erroneous shift points in a transmission by ramping the excitation voltage based upon engine and vehicle parameters. In so doing, upshift and downshift points are corrected. Furthermore, the settings for the excitation voltage range can be user-specified to accommodate a variety of vehicles.
18 Citations
19 Claims
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1. A system for controlling a transmission with an automotive vehicle, the automotive vehicle including a powertrain control module (PCM) and a governor pressure sensor coupled to the PCM, the system comprising:
a controller system for sensing at least one parameter of the vehicle, the controller system modifying signal to the governor pressure sensor based upon the at least one parameter wherein the controller system allows for three different modes of operation;
a throttle position mode wherein the signal is only modified dependent on a throttle position, a speed mode wherein the signal is only modified dependent on speed, and a combination mode wherein the signal is modified dependent upon both the throttle position and the speed.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for controlling a transmission for an automotive vehicle, the automotive vehicle including a powertrain control module (PCM) and a governor pressure sensor coupled to the PCM, the method comprising the steps of:
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(a) sensing at least one parameter of the vehicle; and
(b) modifying a signal to the governor pressure sensor based upon the at least one parameter; and
(c) allowing for three different modes of operation, a throttle position mode wherein the signal is only modified dependent upon a throttle position, a speed mode wherein the signal is only modified dependent on speed, and a combination mode wherein the signal is modified dependent upon a combination of throttle position and speed. - View Dependent Claims (12, 13, 14)
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15. An automotive vehicle comprising:
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a powertrain control module (PCM);
a governor pressure sensor coupled to the PCM; and
a controller system for sensing at least one parameter of the vehicle, the controller system for modifying signal to the governor pressure sensor based upon the at least one parameter, wherein the controller system allows for different three modes of operation;
a throttle position mode wherein the signal is only modified dependent on a throttle position, a speed mode wherein the signal is only modified dependent on speed, and a combination mode wherein the signal is only modified dependent upon both the position and the speed. - View Dependent Claims (16, 17, 18)
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19. An automotive vehicle comprising:
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a powertrain control module (PCM);
a governor pressure sensor coupled to the PCM; and
a controller system for sensing at least one parameter of the vehicle, the controller system for modifying an excitation voltage to the governor pressure sensor based upon the at least one parameter, wherein the controller system further comprises;
a microcontroller coupled to the PCM for measuring the at least one parameter;
a potentiometer for providing a range of excitation voltages coupled to the microcontroller; and
an amplifier coupled to the potentiometer for providing the excitation voltage output to governor pressure sensor.
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Specification