Chery A18. Manual — part 44

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

Specification:

Voltage: 12V

Resistance: 13.8 ~ 15.2Ω± 10%（ on 23°C）

Remark: Force on fuel injector socket in assembly and disassembly must be less

than 120N, or it will influence function.

Caution

·use of a deformed injector retaining clip will cause the injector to not engage

correctly. Always use a new clip when reattaching the injector, otherwise it may
cause the injector to rotate.

LUBRICATION SYSTEM

DESCRIPTION OF LUBRICATION SYSTEM . … . . … … . . …B-2

OIL PAN . … . . … … . . … … . . … … . . … … …B-3

DISASSEMBLY/ASSEMBLY . . … … . . . … … . . …B-3

OIL FILLING . . … … . . . . . … … . . . … … …B-5

OIL STRAINER ASSEMBLY . . … … . . . … … . . . … B-5

DISASSEMBLY/ASSEMBLY . . … … . . . … … . . …B-5

OIL PUMP AND FRONT OIL SEAL . . . … … . . . … …B-6

DISASSEMBLY/ASSEMBLY . . … … . . . … … . . …B-6

OIL FILTER AND OIL PRESSURE SENSOR . . … … . . . … …B-10

DISASSEMBLY/ASSEMBLY . . … … . . . … … . . …B-10

OIL PRESSURE TESTING PARAMETER LIST . . … … . . . …B-11

ENGINE LUBRICATION SYSTEM

DESCRIPTION OF LUBRICATION SYSTEM

——The rotor oil pump (1) at the front end of the

crankshaft sucks oil out of the oil pan (3) by
oil strainer (2) and pressurizes oil, and then
the pressurized oil will enter the full-flow oil
filter through the auxiliary oil passage (4) at
the left side of the cylinder(view from the
front). A relief valve (6) is set up inside the oil
pump to control the pressure at the main oil
passage.

The

relief

valve

opens

at

440kpa+20kpa, and the filtered oil flow from
the center hole in oil filter through the center
hole of the filter terminal to the engine main
oil passage.

——The main oil passage lubricate the main

bearing through holes on the cylinder block
and lubricate the connecting-rod bearing
through the oil passage inside the crank shaft.

——On the side of the vent pipe of the

connecting-rod bearing is a small oil hole
from where oil will eject to lubricate piston
pin and cylinder.

——Oil pressure sensor (8) is close to oil filter,

connected to the main passage through an
internal oil passage. And engine oil will be
provided upward to the third camshaft journal
from the upper oil passage.

——Other camshaft journals get oil from the

middle passage of the camshaft, whose ends
are sealed with steel balls.

1. Oil Pump Rotor Assembly

2. Oil Strainer

3. Oil Pan

4. Cylinder Auxiliary Oil Passage

5. Cylinder Main Oil Passage

6. Oil Pump Relief Valve

7. Oil Filter

8. Oil Pressure Sensor

9. Camshaft

10. Hydraulic Jib