ECU Components in Automobiles

Before today's emission laws, you could build a car engine with no microprocessors. However, we now have stricter emissions laws, so sophisticated controlling mechanisms (ECU Components and Engine Controls) were necessary to control the air/fuel mixture in order for the catalytic converter to reduce the pollution from our exhaust. (Look at How Catalytic Converters Work for further explanation.)

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Automotive Electrical Design

All the different modules send this information onto the communications bus and, several times a second, the ECU sends out information containing a header and the data. The header is simply a number that identifies the data as either a speed or temperature reading while the data is the actual speed or temperature. Another module on the instrument panel...

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