Chery A15. Instruction - page 27

Working pressure: 350kpa

Working temperature: -30℃~+110℃

6.Turn the ignition switch to LOCK position

and disconnect the jumper wire.

7.Complete the “After repair procedure”.

Atomization

1.Inspect atomization pattern.

·

If the atomization is faulty, replace the fuel injector.

Half no scavenge fuel supply integrated module

Fuel supply module is in fuel tank, which includes:

- Fuel pump;

- Diaphragm type fuel pressure adjuster;

- Fuel filter (out of the fuel tank)

1.Fuel Supply Module 2.Fuel Filter 3.Fuel Rail 4.Fuel Injector 5.Pressure Regulator
6.Cone Way Valve 7.Fuel Pump 8.Primary Filter 9.Injection Pump

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Fuel pump

Fuel pump inspection

Note

·When ignition switch is at ON position, it is normal to hear the sound of fuel pump

running.

Fuel pump is located in fuel tank, and there is netlike filter in the fuel pump entrance. Internal
gear positive displacement fuel pump should use unleaded gasoline. Rotor is driven by motor,
while motor power comes from battery through relay.

There is safety valve installed in fuel pump. Safety valve will open to prevent engine from
over hot when pressure in fuel line is over 7bar.

Fuel pump can work in fuel temperature range of -30 ~ +70℃. Minimum rate of flow is 76

l/h on 4bar-12V(maximal current is 8.5A), while minimum rate of flow is 20 l/h on 3bar-8V.

1.Electric Terminal 2 Fuel sucking Slot 3.Fuel transporting Groove 4.Safety Valve

ECU realizes below control to fuel pump through relay:

- Fuel pump works as key switch is on for 2 seconds but engine does not start.

- Fuel pump keeps working when engine is running or vehicle is in its way.

Fuel pump will stop working if engine speed is lower than a certain value (approx.50r/m).
Remained fuel can prevent disturbance of static and electric wave. Fuel continuously flowing
can cool fuel pump and clean fuel rail.

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Fuel Pump Hold Pressure Inspection

Warning

·Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries

or death and damage. Always carry out the following procedure with the engine
stopped.

Caution

·Disconnecting/connecting the quick release connector without cleaning it may

possibly cause damage to the fuel pipe and quick release connector. Always clean
the quick release connector joint area before disconnecting/connecting using a cloth
or soft brush, and make sure that it is free of foreign material.

Fuel Pump Hold Pressure Inspection

Warning

·Fuel line spills and leakage are dangerous. Fuel can ignition and cause serious

injuries or death and damage. Always carry out the following procedure with the
engine stopped.

Caution

·Disconnecting/connecting the quick release connector without cleaning it may

possibly cause damage to the fuel pipe and quick release connector. Always clean
the quick release connector joint area before disconnecting/connecting using a cloth
or soft brush, and make sure that it is free of foreign material.

Fuel pressure regulator

Fuel pressure regulator is located in fuel tank, which is specified on fixed pressure of 3.5bar.

Caution

·Due to adoption of the mechanical returnless fuel system, the pressure regulator

cannot be inspected separately.

Fuel rail
Fuel rail 1 is made of cast aluminum. Its function is distributing fuel to injector 2.

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1.Fuel Rail 2.Fuel Injector 3.Fuel Feeding Port

Fuel injector

This system adopts head supplying single hole Fuel injector, and fuel injection pressure is
3.5bar. Fuel injected from fuel injector keeps in atomization and comes into cone angle (15
degree to injection nozzle axis).

Control logic of Fuel injector is “phase, order” controlling. These four fuel injectors are
controlled by air input order of four cylinders. Fuel injector is open on expansion stroke till
intake stroke started.

Fuel injector is fixed on fuel rail, and fuel rail can press injector on fixed seat of intake
manifold. Two O-type pads (1) (2) are used in sealing. Fuel is entering from upper side of
fuel injector. Fuel injector includes coil (4) and electric terminal (5) on electric plug (6).

1. O-ring 2. O-ring 3. Fuel Feeding Port
4. Coil 5. Electric Terminal 6. Electric Plug

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