Lifan X60, Руководство по обслуживанию, Страница: 40 / 839

LIFAN X60 Service Manual
normal control in the subsequent 2-3s.
(3) Adaptability adjustment of ignition angle
There is difference between engines due to manufacturing error and long-term wear.
When the system and engine adopt the initial or the ECM is recharged, there may be
knocking during engine operation, and the system will record this. After a period of
running-in, the system will automatically generate an adaptive ignition adjustment
correction value (self-learning value). When the engine turns into the same working
condition, the system will automatically carry out adaptive adjustment on ignition advance
angle to avoid strong knock. The adaptability learning of system will be continuously
updated during engine operation.
A/C Control Logic
The ECM will monitor A/C request input and A/C evaporator temperature sensor input,
and control A/C compressor clutch through A/C relay. The system will automatically
identify A/C system based on plug and play.
1. A/C working conditions
The A/C system will start when the following conditions are met:
(1) The engine runs and the running time is more than 7s.
(2) The A/C switch is connected.
(3) All A/C cut-off modes do not work.
2. A/C cut-off mode
In some cases, to ensure power or protect engine or protect A/C system, the ECM must cut
off A/C compressor or prohibit start of A/C system. Meanwhile, in order to avoid frequent
on-off of compressor clutch, once the A/C turns into cut-off mode, the ECM must leave
certain time to re-pull A/C clutch by means of delay, etc.
The following modes are mainly included:
(1) A/C cut-off mode when engine speed is too high: to protect A/C system
•
When A/C is off, it is required to start compressor when engine speed is lower than
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