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US 8,577,570 B2Granted
Touch point calibration method for a motor vehicle
AssigneeHonda Motor Co., Ltd.
InventorNathaniel Ellis
Life of this patent
Estimating the term…
Abstract
A touch point calibration method for a motor vehicle is disclosed. The method includes steps for determining if the touch point can be calibrated. The method also includes steps for determining the touch point when the system can be calibrated.
Claims20
A method of operating a manual transmission in a motor vehicle, comprising the steps of:
- sending information related to a clutch position from a clutch sensor to a control unit, the clutch position being a position of a clutch of the manual transmission of the motor vehicle located between a fully engaged position and a fully disengaged position, wherein the clutch is displaced linearly between the fully engaged position and the fully disengaged position;
- the control unit determining a clutch velocity according to the information related to the clutch position, the clutch velocity being determined based on a change in the clutch position measured over a time period;
- the control unit comparing the clutch velocity with a predetermined maximum clutch velocity;
- wherein the control unit allows a calibration mode of calibrating the touch point when the control unit determines that the clutch velocity is below the predetermined maximum clutch velocity, the calibration mode being used to determine a touch point value between the fully engaged position and the fully disengaged position for the clutch of the manual transmission;
- wherein the control unit prevents the calibration mode when the control unit determines that the clutch velocity is greater than the predetermined maximum clutch velocity;
- and
- operating the manual transmission of the motor vehicle using the touch point value determined during the calibration mode.
4 more elements
A method of calibrating a manual transmission in a motor vehicle, comprising the steps of:
- providing a control unit which receives information related to a clutch position from a clutch sensor, the clutch position being a position of a clutch of the manual transmission of the motor vehicle located between a fully engaged position and a fully disengaged position, wherein the clutch is displaced linearly between the fully engaged position and the fully disengaged position;
- the control unit determining an engine speed according to information received from an engine speed sensor and determining a mainshaft speed of a transmission according to information received from a mainshaft speed sensor;
- the control unit calculating a speed difference value using the mainshaft speed and the engine speed;
- the control unit determining whether the motor vehicle is operating in a normal mode or a calibration mode, wherein the determination between the normal mode and the calibration mode is based on at least one of the information related to the clutch position and the speed difference value;
- the control unit determining a touch point value between the fully engaged position and the fully disengaged position for the clutch of the manual transmission using the clutch position and the speed difference value, when the control unit determines that the motor vehicle is operating in the calibration mode;
- and
- operating the manual transmission of the motor vehicle according to the determined touch point value.
4 more elements
A method of calibrating a manual transmission in a motor vehicle, comprising the steps of:
- providing a control unit which receives information related to at least one operating parameter of the motor vehicle;
- wherein the control unit further receives information related to a clutch position from a clutch sensor, the clutch position being a position of a clutch of the manual transmission of the motor vehicle located between a fully engaged position and a fully disengaged position, wherein the clutch is displaced linearly between the fully engaged position and the fully disengaged position;
- the control unit determining an engine speed according to information received from an engine speed sensor and determining a mainshaft speed of a transmission according to information received from a mainshaft speed sensor;
- the control unit calculating a speed difference value using the engine speed and the mainshaft speed;
- the control unit checking if the motor vehicle is operating in a calibration mode using information related to the at least one operating parameter;
- the control unit determining a touch point value between the fully engaged position and the fully disengaged position for the clutch of the manual transmission using the clutch position and the speed difference value when the control unit determines that the motor vehicle is operating in the calibration mode;
- and
- the control unit preventing determination of a new touch point value when the control unit determines that the motor vehicle is not operating in the calibration mode.
5 more elements
Dependencies are inferred from the claim text.