Why do cars need semiconductors?What the car and semiconductor Mirai (ITmedia Business Online) -Yahoo! News

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The engine ECU, also known as a black box, is shot with X -rays to see the internal base.It is connected to an external connector with a wire that extends up.This is an ECU for motorcycle, but the ECU for small cars is also compact, and the basic structure is the same.

　Needless to say, EVs and hybrid vehicles are of course an indispensable part for pure engine vehicles. [Image] In the clean diesel, which is built inside the CPU, a clean diesel performs a fuel injection around 5 times in one combustion, effectively uses fuel, can be exhausted while improving fuel economy. I am doing a trick to get closer to a clean state. Despite the milliseconds control, there is no work for computers. Rather, the fuel injection device that corresponds to it will be more difficult. The gasoline engine also performs multiple fuel injection, and the spark plug is ignition timing, and the sprocket of the intake and exhaust camshaft is adjusted to adjust the valve timing. In addition, at that time, the speed, engine speed, water temperature, oil temperature, throttle opening, and even the momentum (acceleration speed) stepping on the accelerator pedal, judging the driver's acceleration request, and performing necessary control. In addition, by coordinating with the control of the transmission, a smooth and fuel -saving run is realized. You may think that you need a high -performance computer for this, but since the ECU is a dedicated machine, it doesn't seem to require much comparison skills compared to modern PCs. The semiconductor is not used only for the ECU, but almost all of the electronic components have semiconductors. The image sensor, laser sensor, and millimeter wave radar transmitter incorporated into the camera used for lane deviation brakes and lane deviation warnings of ADAS (advanced driving support system) are also composed of semiconductors. Other than that, for example, a power window motor enables one -touch operation and has a microcomputer to control the torque. Therefore, unlike the old analog control, if there is a small change depending on the year, etc., the appearance will not work even if it is assembled even though it is the same part. This is a symptom because the microcomputer is incorporated, and this is why recent parts ordering of cars are accurately managed by the chassis number. The fact that semiconductors have been included throughout the car are not only because they have increased their functions, but also to simplify the wiring wiring, which runs inside the car, to reduce weight increase. In the analog era, high -end cars with more than 100 kilograms appeared in the harness alone, but the digital signal enabled serial connections to be released from independent harnesses for each part, achieving significant weight reduction. As you know, the throttle valve and the accelerator pedal are currently converting them into electrical signals, not wire cables. Now the brakes and steering operations are starting to shift to drive -by wires. This enables complicated and free control. This is also a technology that could be realized because it uses semiconductors. Even the headlight unit is modularized, ALH (adaptive LED headlights = complex light distribution characteristics do not make you feel dazzling to the oncoming vehicle driver even in high beams). It has been incorporated. As an aside, as the headlights are highly functional and the semiconductor is included, there are many cases in which the cars are hacked and stealed. The method is to use the signal line that has reached the headlights, access the main ECU, unlock the door, start the engine, and steal the car in just a few minutes. This is a crime caused by the sophistication of the electronic control system in the vehicle using a semiconductor, and is trying to prevent security and prevent it.

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