Changan CS35 User Manual

3.1.13-8
CS35 2013.04
3.1.13-8Electronic Control System - ME7
Ignition Timing Control
The system adopts distributor - less, double - cylinder direct ignition, through the on and off of internal
high power transistor (Darlington) to control the on - and - off of the ignition coil primary winding circuit,
enable the ignition coil produce high voltage (the igniter internal structure varies with different engine
types. Some engines are not equipped with igniters, and high - power triode transistor is directly
equipped in the internal of electrical controller ECM. Some igniters only have a Darlington transistor as a
switch, and other electrical control components and electrical controls works as a whole. In addition,
some igniters have switch function, as well as the function of constant current control, closed angle con-
trol, cylinder identification and ignition monitoring).
The control unit includes the following three different forms:
• Ignition time when the engine start (initial ignition time)
• Engine after - start control
• Charge current time control
1. Ignition control after engine start
If the best ignition advance angle of the engine after starting can be confirmed as follows, then the igni-
tion can occur in the most appropriate moment under different conditions of the engine.
When the throttle is at idle speed position, best ignition advance angle is reached based on the
initial
ignition advance angle, plus the the basic ignition advance angle that is determined by engine speed,
engine cooling compensation and the relative idle stability advance compensation angle.
When the throttle opening is larger than idle speed position, it is also reached based on the initial ignition
advance angle, plus the the basic ignition advance angle that is determined by engine speed, engine
cooling compensation and the relative idle stability advance compensation angle.
Radiator Fan Control
The system controls the operation of radiator fan motor (on and off ), radiator fan realizes the on - off
control motor through the relay that controlled by ECM.
When air conditioning is operated or stopped, the radiator fan motor should be turned on or off accord-
ingly.
CAUTION: With A/C ON, the fan starts rotating and will run at high speed when high pressure
of refrigerant exceeds 15.2 bar.
Best ignition
advance angle
＝
Initial
ignition
advance angle
＋
Basic ignition
advance angle
＋
Various com-
pensation
angles
Radiator Fan Motor Engine Cooling Temperature
OFF → ON (low speed) 97 ℃
ON → OFF (low speed) 94 ℃
OFF → ON (high speed) 102 ℃
ON → OFF (high speed) 99 ℃
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Changan CS35 Specifications

General

Brand	Changan
Model	CS35
Category	Automobile
Language	English