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XIV. Electronic Fuel Injection System
Electronic Fuel Injection System------------------------------------------14.1
Parts of Electronic Fuel Injection System--------------------------------14.1
Fault Diagnosis---------------------------------------------------------------14.3
Common Trouble Shooting Methods--------------------------------------14.4
14.1 Introduction to Electronic Fuel Injection System
BX125 adopts small engine EFI system pr26Voduced by Delphi Company, and the system can realize
closed-loop control through oxygen sensor. The system is featured by independent fuel injection and ignition
control. Three-way catalytic converter is used to deal with the gas after combustion in the cylinder to make it
converted into harmless gas into the atmosphere. The system is a closed-loop control and self-learning system,
effectively eliminating the manufacturing differences of the system and relevant mechanical parts and
components, enhancing the overall consistency of the whole vehicle, and eliminating the error caused by wear
and other reasons after the vehicle is operated.
14.2 Parts of Electronic Fuel Injection System
14.2.1 Engine controller (ECU MT05)
14.2.1.1 ECU working principles
Engine controller inspects engine running conditions at real time with the assistance of various sensors,
optimizes the driving performance under different working conditions through rational calculation and
self-learning control output device, and ensure the emission and fuel economical efficiency of the original
vehicle. When the system is in trouble, the engine controller can also wake up the self diagnosis.
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