Tachometer display system and method for display
AssigneeHonda Motors Co., Ltd.
InventorMichael T. Dickinson
Life of this patent
Estimating the term…
Abstract
A tachometer display system and method is provided. In one embodiment, a tachometer display system includes a tachometer for indicating a plurality of engine speeds. The tachometer is configured to display a current engine speed based on a current gear ratio of a manual transmission. At least two synchronous shift point indicators are displayed at variable locations near the tachometer. Each synchronous shift point indicator is displayed near a location on the tachometer associated with an engine speed that corresponds to a transmission input shaft speed for a downshifted gear ratio of the manual transmission from the current gear ratio.
Claims20
A tachometer display system comprising:
- a tachometer for indicating a plurality of engine speeds, wherein the tachometer is configured to display a current engine speed based on a current gear ratio of a manual transmission;
- and
- at least two synchronous shift point indicators displayed at variable locations near the tachometer, wherein each synchronous shift point indicator is displayed near a location on the tachometer associated with an engine speed that corresponds to a transmission input shaft speed for a downshifted gear ratio of the manual transmission from the current gear ratio;
- and
- wherein, in response to an engine speed that corresponds to the transmission input shaft speed for the downshifted gear ratio of the manual transmission from the current gear ratio that exceeds a maximum permitted engine speed, a display of a synchronous shift point indicator for the downshifted gear ratio is prevented.
A method for displaying synchronous shift point indicators on a tachometer display system, the method comprising:
- providing a tachometer for indicating a plurality of engine speeds;
- displaying a current engine speed on the tachometer based on a current gear ratio of a manual transmission;
- displaying at least two synchronous shift point indicators at variable locations near the tachometer, wherein each synchronous shift point indicator is displayed near a location on the tachometer associated with an engine speed that corresponds to a transmission input shaft speed for a downshifted gear ratio of the manual transmission from the current gear ratio;
- determining a maximum permitted engine speed;
- and
- upon determining that an engine speed that corresponds to the transmission input shaft speed for the downshifted gear ratio of the manual transmission from the current gear ratio exceeds the maximum permitted engine speed, preventing a display of a synchronous shift point indicator for the downshifted gear ratio.
A method for displaying synchronous shift point indicators on a tachometer display system, the method comprising:
- determining a first engine speed that corresponds to a first transmission input shaft speed for a first downshifted gear ratio of a manual transmission from a current gear ratio;
- comparing the first engine speed to a maximum permitted engine speed;
- upon determining that the first engine speed is not greater than the maximum permitted engine speed, displaying a first synchronous shift point indicator near a location of the first engine speed on a tachometer;
- and
- upon determining that the first engine speed exceeds the maximum permitted engine speed, preventing a display of the first synchronous shift point indicator on the tachometer.
Dependencies are inferred from the claim text.