ECU
The electronic control unit is an electronic control unit (ECU) for short. Function electronic control unit is based on the program and data memory of their conduct on the air flow meter and a variety of sensor information input operation, processing, judgment, and then output instruction , provide some electrical pulse width of the signal to control the fuel injection injector amount . Electronic control unit by a microcomputer, input, output and control circuit.(ford conrods)
ECU (Electronic Control Unit) electronic control unit, also known as " trip computer ", " car computer " and so on . From the use of perspective is a vehicle for computer controller, also known as vehicle-specific microcontrollers. It is an ordinary single-chip, like large-scale integrated microprocessor (CPU), memory (ROM,, RAM), an input / output interface (I / O), analog to digital converter (A / D) as well as shaping, drivers, etc. circuit.(renault conrods)
ECU voltage operating range is generally 6.5-16V (internal key Department has regulated devices) , operating current at 0.015-0.1A, the operating temperature of minus 40-80 degrees. 1000Hz less able to withstand the vibration, and therefore the probability of damage is very small ECU, the ECU is the core of the CPU , which has the function of controlling the operation , when the engine is running , it is collecting signals from the sensors , calculates , and the operation of results into a control signal to control the work of the controlled object . It also imposed on memory (ROM,, RAM), the control input / output interface (I / O) and other external circuitry ; memories stored in ROM program is the result of a large number of precise calculations and experimental data taken based on the inherent program when the engine constantly collected to the signal of each sensor are compared and calculated . Control the result of the comparison and calculation engine ignition control , air-fuel ratio , idle speed , exhaust gas recirculation and many other parameters. It also has self-diagnostic and protection, when the system failure , it can automatically record the fault code reading and the use of protective measures from the alternative procedures inherent in the program to maintain the engine running in RAM , so the car can open to the repair shop .(crankshaft)
Under normal circumstances, RAM will keep your driving record data, the ECU becomes a learning process, to adapt to your driving habits provide optimum control state, the procedure is also called an adaptive process. However, because it is stored in RAM, the same as the error code , and a loss of battery power to remove it , all data will be lost .
