Abstract: A method and apparatus are disclosed for controlling operation of a spark-ignited internal combustion engine by adjusting pulse width of fuel injected into the engine. An initial fuel pulse width is set for respective pairs of engine operating parameters such as engine speed and manifold pressure. The pulse width is adjusted by a control, for each pair of parameters, to obtain maximum performance, for example, as indicated by a torque detector. Each time a pulse width is adjusted, all previously adjusted pulse widths are compared with corresponding pulse widths in stored template fuel maps. The best matched template fuel map is then used in conjunction with all previously adjusted points to create a new operational fuel map to run the engine until a more updated operational fuel map can be created upon additional fuel pulse widths being tuned.

Abstract: A new and improved antenna having a body portion which is either constructed from a substantially non-metallic conductor such as carbon or graphite and the like to provide bandwidths, within tolerable standing wave ratios, much wider than is presently obtainable utilizing conventional antennas. Selected areas of the non-metallic conductive body portion may also be coated with a metallic conductor to vary the bandwidth and standing wave ratios as required. In another embodiment, a non-conductive body portion may be coated with both a metallic conductor coating and a non-metallic conductor coating in various relationships to vary the bandwidth and standing wave ratio. Antennas constructed primarily of non-metallic conductors such as carbon or graphite are conducive to use in high temperature applications because only slight changes occur in the antennas operating characteristics over large changes in temperature.