High performance tachometer having a shift indicator system with "short-shift" protection
First Claim
1. A shift indicator system for indicating to a vehicle operator when to shift gears of a vehicle, said system comprising:
- a memory which stores a sequence of shift setpoints corresponding respectively to a plurality of preselected RPM values;
a controller which selects one of said shift setpoints in response to a predetermined algorithm monitoring the profile of an engine RPM signal and which then produces a shift display enable or disable signal in accordance with said predetermined algorithm; and
a shift setpoint display which produces an observable indication to the operator in which shift setpoint has been selected by said algorithm.
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Accused Products
Abstract
A high performance tachometer is provided for use in high performance racing vehicles, such as dragsters. The tachometer has an input signal indicative of the vehicular engine speed and an output display for displaying the instantaneous engine speed as indicated by the input signal. The tachometer includes input controls for directing the control and operation of the tachometer. Special features associated with the tachometer include a shift indicator. The system is designed to monitor an engine speed or RPM profile and utilize information from this profile to operate the shift setpoint selection, shift display enablement and the shift indicator.
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Citations
38 Claims
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1. A shift indicator system for indicating to a vehicle operator when to shift gears of a vehicle, said system comprising:
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a memory which stores a sequence of shift setpoints corresponding respectively to a plurality of preselected RPM values; a controller which selects one of said shift setpoints in response to a predetermined algorithm monitoring the profile of an engine RPM signal and which then produces a shift display enable or disable signal in accordance with said predetermined algorithm; and a shift setpoint display which produces an observable indication to the operator in which shift setpoint has been selected by said algorithm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A shift indicator method for indicating to a vehicle operator when to shift gears of a vehicle, said method comprising:
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storing in a memory a sequence of shift setpoints corresponding respectively to a plurality of preselected RPM values; a controller selecting one of said shift setpoints in response to a predetermined algorithm monitoring the profile of an engine RPM signal and then producing a shift display enable or disable signal in accordance with said predetermined algorithm; and producing an observable indication to the operator in which shift setpoint has been selected by said algorithm. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification