Design and implementation of an embedded data logger for MAP sensors in automotive systems

This paper presents the design and construction of an embedded system for recording and analyzing data from a Manifold Absolute Pressure (MAP) sensor. The system integrates a PIC18F4620 microcontroller, a microSD storage module, a DS3231 real-time clock, and a Bluetooth communication module. This data logger enables real-time evaluation of the performance of an ecological valve installed in a gasoline engine. Tests under different operating conditions were conducted, assessing its impact on engine efficiency and fuel consumption.