Automotive device for inhibiting engine ignition
An automotive device is described for preventing activation of a starter by an activator in response to untimely operation of an ignition switch following controlled dimming of a gauge warning light. The ignition switch has an OFF position and first and second active positions. The device comprises: (a) port means for electrically connecting the device to the starter, the gauge warning light, and the ignition switch; (b) first analog circuit means for supplying a voltage to the gauge warning light; (c) first digital circuit means connected to the ignition switch for outputting a first control signal to the first analog circuit means such that a constant voltage is supplied to the gauge warning light in response to the ignition switch being turned to the first active position; (d) variable timing means for outputting timing signals to the first digital circuit means such that the first control signal is supplied to the first analog circuit means for a variable length of time; and (e) second analog circuit means connected to the first analog circuit means for producing a gradual decrease in the voltage supplied by the first analog circuit means in response to the end of the first control signal.
- Assignee:
- NOV; EDB-87-064503; NOV-87-049462
- Patent Number(s):
- US 4645939
- OSTI ID:
- 6719615
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330603* -- Vehicle Design Factors-- Engine System
ANALOG SYSTEMS
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DIGITAL SYSTEMS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
IGNITION SYSTEMS
POSITIONING
SIGNALS
SWITCHES
TIMING CIRCUITS
VEHICLES