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Basic Engine Management System or EMS is a self-contained custom built computer which controls the running of an engine by monitoring the engine speed, load and temperature and providing the ignition spark at the right time for the prevailing conditions and metering the fuel to the engine in the exact quantity required. There are two discrete subsystems in operation within the Engine Management System, the fuel or injection system and the ignition system. It is possible to run an engine management system which just provides one of these subsystems, for example just the ignition system. It is much more common to use the mapped ignition within an Engine Management System in isolation than it is to use just the injection.
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Scope and Importance:
Engine Management System (EMS) is responsible for controlling the amount of fuel being injected and for adjusting the ignition timing. Optimum functioning of the EMS assures maximum engine power, with the lowest amount of exhaust emissions and the lowest fuel consumption. The EMS is comprised of sensors for intake air and coolant temperature, intake manifold absolute pressure (MAP) and throttle position (TPS) as well as sensors for engine speed and signals for the required injection and ignition spark events and a sensor for information about the oxygen content in the exhaust. Furthermore, there is an idle speed motor for adjusting and stabilizing the idle speed, or an electronic throttle body and finally a fuel pressure regulator and fuel injector(s). The supplied high-energy ignition coils are controlled by the integrated ignition module. For alternative fuel applications fuel rail pressure and temperature sensors are also utilized. The ECU calculates the correct amount of fuel and ignition timing by "reading" the information supplied by various sensors and compares these values with the appropriate points in fuel and ignition-map of the ECU.
In 2014, Engine Management System market was valued at USD 145.13 billion and it is expected to reach USD 210.60 billion by 2021, growing at a CAGR of 5.5% from 2015 to 2021.Increasing GDP and technological upgradation are the major drivers for the rise in demand for automotive engine management system market globally.
U.S., China, Germany, Japan and Brazil are expected to be the largest markets for the automotive engine management system. Developing countries like India and South Korea are expected to show a high growth rate in the demand for automotive engine management system from 2014-2019.
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This page was last updated on 15th Sep, 2015
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