A self-teaching device for signalling to the driver of a vehicle that a gear change is indicated

摘要: @ The invention relates to a method and device for signaling vehicle operator that higher gear should be selected. A microprocessor (1) is connected so it can sense the rotational speed of engine (via 3) road 2). quotient determined commpared with series predetermined quotients, one each selector positions, engaged thus determined. For there registered its own ratio next position, being zero highest gear. signal multiplied by this value compared maximum value, if result exceeds sent indicate change made. In accordance preferred embodiment, fact utilized generator, generator belts slips, will produce an which too low, first mentioned measured not agree quotient. An error indication then indicating need service.