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An engine control unit (ECU), also called an engine control module (ECM), [1] is a device that controls various subsystems of an internal combustion engine. Systems commonly controlled by an ECU include the fuel injection and ignition systems.
Today, the term chip tuning can be misleading, as people will often use it to describe ECU tuning that does not involve swapping the chip. Modern electronic control units can be tuned by simply updating their software through a standard interface, such as On Board Diagnostics. This procedure is commonly referred to as engine or electronic ...
Previously, Nissan Motor, Hitachi and Robert Bosch owned 25%, 17% and 10% respectively. [4] 2003 Unisia JECS opens factory in Shenzhen, China, to cut costs as demanded by Nissan. [5] 2004 Hitachi Unisia Automotive Ltd. merged into Hitachi, Ltd. 2004 Unisia JECS opens factory in Guangzhou, China, to make water pumps and valves.
Final cost After restoration Final ... ECU remapped from 206.5 bhp to 243.5 bhp, ... 1996 Nissan Skyline R33: £3,500: £3,000: £3,655: £4,500
An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle.
This interface was made in different varieties and changed with power train control modules (aka PCM, ECM, ECU). Different versions had slight differences in pin-outs and baud rates. Earlier versions used a 160 baud rate, while later versions went up to 8192 baud and used bi-directional communications to the PCM. [15] [16]
It is generally a combined controller consisting of the engine control unit (ECU) and the transmission control unit (TCU). On some cars, such as many Chryslers, there are multiple computers: the PCM, the TCU, and the Body Control Module (BCM), for a total of three separate computers. These automotive computers are generally very reliable.
An ECU electronic module contains microprocessors, memory units, analog to digital converters and output interface units. Depending upon the parameters, a number of different maps can be stored in the onboard memory. This allows the ECU to be tailored to the specific engine and vehicle requirements, depending on the application.
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