Page 227 - Foton Workshop Manual - Aumark (BJ1099)

ENGINE CONTROL SYSTEM - ENGINE CONTROL SYSTEM 11-1
ENGINE CONTROL SYSTEM

SYSTEM DESCRIPTION
BJ486ZLEQ4 gasoline engine adopts UAES ME7.8 engine electronic management system,
which takes Engine Control Module (ECM) as the control center, with the corresponding
sensing elements, it inputs the air intake,crankshaft rotating speed and position, camshaft
phase information, oxygen sensor signal and some other auxiliary signals into the ECU
electronic control unit, after handling the signals, ECU controls the executive element to
keep the gas mixture in a reasonable combustible mixture ratio (air-fuel ratio) and make
it ignite at the right moment (ignition timing), so as to obtain the ideal motive power, fuel 11
economy and emission standards. In addition, ECM has the OBD diagnostic function,
which can simplify the troubleshooting.

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