Basically every modern-day engine in automobiles and light business cars features an electronic control unit (or ECU for short), additionally called an engine administration computer system. This specialist and also complex unit consists of a number of computer system chips and also generally governs the running of the engine. It is hooked up to various sensing units that spot standard factors such as temperature (both in the engine and externally), speed and also exhaust gas make-up. In more innovative devices, that are ending up being increasingly common, several various other disorders are thought about. The ECU then regulates numerous engine features, primarily fuel shot, ignition timing as well as boost pressure if a turbocharger is suited. The aim is undoubtedly to make certain smooth operating, ideal fuel usage and also performance, as well as very little exhaust gas exhausts.
This is all controlled by one major chip, which includes what is referred to as an engine 'map'. This map 'reads' all the inputs from sensors and also is programmed to provide the ideal settings under a variety of scenarios. Nevertheless, perfection is impossible to accomplish as a whole, as a number of compromises have actually to be made. Primarily this is because of economies of scale. Makers have to generate vehicles for a large range of markets where issues such as gas taste can have an impact. As several cars used in Europe may be driven right into neighbouring nations with poorer energies readily available, or will be utilized in harsh settings where dirt and also extreme altitudes prevail, the engine management map is a 'broad brush' method to take all this into factor to consider.