Indication of rates of fuel consumption
AssigneeControl Logic (Proprietary) Limited
InventorAlan B. Murray
Life of this patent
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Abstract
This invention relates to a method of indicating changes in the rate of fuel consumption in internal combustion engines from a predetermined rate utilizing as a basis a predetermined vacuum in the engine manifold and using variations from such vacuum to operate a switch mechanism in at least one electrical circuit for a display means which indicates when the vacuum is above or below or at the predetermined level.
Claims8
A method of indicating changes in the rate of fuel consumption in internal combustion engines from a predetermined rate, wherein the rates of fuel consumption are proportional to the vacuum values in the inlet manifold of the engine, comprising the steps of:
- actuating an electrical switch mechanism, electrically connected to a single, light-emitting display means, to any one of a plurality of different positions by means of a vacuum value which is either above or below at least one predetermined vacuum level;
- and
- energizing said single display means comprising a plurality of light emitting diodes in a plurality of different modes, respectively corresponding to the different operational positions of said switch mechanism, so as to cause the color of the light emitted by said single display means to change dependent upon the alternative or simultaneous energization of said diodes and thereby visually indicate changes in the rate of said fuel consumption from said predetermined rate.
A device for indicating changes in the rate of fuel consumption in internal combustion engines from a predetermined rate, wherein the rates of fuel consumption are proportional to the vacuum values in the inlet manifold of the engine, comprising:
- display means for indicating changes in the rate of fuel consumption from a predetermined rate;
- two independent electrical circuits electrically connected to said display means;
- a light-emitting diode disposed within each of said circuits;
- and
- electrical switch means, operatively connected to the inlet manifold of the engine so as to be actuated by the vacuum values thereof and electrically connected to said two circuits, for activating one of said circuits when the vacuum value is below a first predetermined level, activating the other one of said circuits when the vacuum value is above a second predetermined level, and activating both of said circuits when the vacuum value is between said two predetermined levels.
A device for indicating changes in the rate of fuel consumption in internal combustion engines from a predetermined rate, wherein the rates of fuel consumption are proportional to the vacuum values in the inlet manifold of the engine, comprising:
- a vacuum-operated electrical switch mechanism operatively connected to the inlet manifold of the engine and capable of attaining any one of a plurality of different positions in response to vacuum values above and below at least one predetermined vacuum level within said inlet manifold;
- a single, light-emitting display means electrically connected to said switch mechanism;
- and
- electrical circuit means interconnecting said switch mechanism and said display means for energizing said display means in a plurality of different modes corresponding to the different operational positions of said switch mechanism so as to cause the color of the light emitted by said single display means to change and thereby visually indicate changes in the rate of said fuel consumption from said predetermined rate.
Dependencies are inferred from the claim text.