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EFI: Electronics for low-emission motor control, part 2

The first part of this blog series introduced Electronic Fuel Injection (EFI) and a described the system board utilized by STMicroelectronics. The company produces ICs for the realization of the central computing core of this type of solution, the ECU (acronym of Electronic Control Unit) shown in Figure 1.

Figure 1. The demo boards for EFI applications made by STMicroelectronics Company. (Source:

The ECU is a very complex system in a vehicle, the efficiency and the accuracy of the data processing of the information coming from the sensors are key factor for the effectiveness of this type of computing unit like that shown in Figure 2.

Figure 2. The automated driving ADAS ECU made by Infineon Company for automotive applications.(Source:

The demand for alternative, more energy-efficient forms of mobility is increasingly geared toward electromobility. Drivetrain electrification, whether in hybrid electric vehicles or – ultimately – fully electric vehicles, has the advantages of higher energy efficiency and zero tailpipe emissions. …

As we transition toward greater electromobility, Infineon is also working with leading car manufacturers and system suppliers to improve the energy efficiency of combustion engines and the various subsystems in today’s vehicles. We offer a range of dedicated products and solutions targeting hotspots such as demand-driven accessories, energy management and electric power distribution. These solu­tions embody Infineon’s commitment to the exceptional quality and reliability that the world’s leading vehicle manufacturers expect.” (Source:

Such a complex system requires the utilization of many different ICs that often are integrated for many automotive applications, into the so called “body modules” (see Figure 3):

STMicroelectronics Body Module
Figure 3. The block diagram of a body module made by STMicroelectronics includes the ECU, communications transceivers, and drivers for vehicle systems. (Source:

Body control modules (BCM) depend on highly reliable electronic components to monitor and control a wide variety of car body, security and convenience functions. Due to the increasing complexity, vehicles often have multiple BCMs, each dedicated to a specific sub-system, including:

  • Lighting control: including incandescent, HID, Xenon, LED lamps and their related diagnostics monitoring (over-load and over-temperature protection, bulb outage detection, etc.);
  • Motor control drivers for mirrors, wiper, windows, seat position, dome, locks, and climate control;
  • Security control for immobilizer and NFC keyless entry systems.” (Source: com)

Do you have experience with EFI systems? Do you think that a smart usage of the electronics technology could reduce the fuel consumption as well as the emissions of the vehicle and the comfort of the driver by adding many functionalities with the usage of smart sensors and ADAS (acronym of Advanced driver-assistance systems)?

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