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21. EEC SYSTEM
21-4
3.
Function
Item
Function
Description
Evaporative
Emission
Control Valve
It is used to prevent gasoline
vapors from escaping into the
atmosphere from the fuel tank
and fuel system.
Storage the gasoline vapors to canister,
conduct the gasoline vapors to engine
by vacuum when starting the engine.
Canister
Storage the gasoline vapors
from fuel tank and fuel
system.
The gasoline vapors storage by
canister, to meet the regulation, the HC
emission con not exceeds 2 grams.
P.C.V
Recycle the fuel gas from the
crankcase blow by.
Recycle the fuel gas from the crankcase
blow by to the engine.
Oxygen Sensor
To control the air/fuel mixture
in best condition.
Sending the mixture condition info to
ECU by voltage signal, ECU controls
the fuel injection to meet the emission
regulation.
Catalyst
To reduce the emission of
HC, CO and NOx produced
from the exhaust gas.
Using the catalyst converts the HC and
CO to CO2 and H2O also reduce the
NOx pollution.
ECU
To control the injector, ignition
and bypass air of fuel
injection system to reach the
best driving condition.
ECU (Electric Control Unit), receiving
sensor which equipped on engine to
precisely control fuel injection and
ignition to reduce the exhaust emission
pollution.
3.1.
Trouble Shooting
Low engine power, instable engine idle speed
•
Clog in canister or tubes.
•
Emission control valve malfunction.
•
E.E.C. system tubes loosen or crack.
•
ECU malfunction.
Engine idle speed and acceleration in bad condition
•
Clog in canister or tubes.
•
Emission control valve malfunction.
Содержание AHG1
Страница 3: ...1 Quick Reference 1 2 1 Engine Frame Serial Number Frame Serial Number Engine Serial Number ...
Страница 14: ...1 Quick Reference 1 13 8 General Troubleshooting Engine lacks power 8 1 ...
Страница 15: ...1 Quick Reference 1 14 ...
Страница 16: ...1 Quick Reference 1 15 Engine will not stat or is hard to start 8 2 ...
Страница 17: ...1 Quick Reference 1 16 Poor handling 8 3 ...
Страница 18: ...1 Quick Reference 1 17 Poor performance at high speed 8 4 ...
Страница 19: ...1 Quick Reference 1 18 Poor performance at low and idle speed 8 5 ...
Страница 20: ...2 External components Exhaust pipe 2 0 2 ...
Страница 21: ...2 External components Exhaust pipe 2 1 ...
Страница 57: ...4 LUBRICATION SYSTEM 4 1 Lubrication System ...
Страница 66: ...5 ENGINE 5 1 Engine 1 ENGINE REMOVAL INSTALLATION 4 1 1 Removal 4 1 2 Installation 6 ...
Страница 73: ...6 CYLINDER HEAD VALVE 6 2 1 SCHEMATIC DRAWING ...
Страница 87: ...7 CYLINDER PISTON 7 2 1 SCHEMATIC DRAWING ...
Страница 97: ...8 DRIVE DRIVEN PULLEYS 8 2 1 SCHEMATIC DRAWING ...
Страница 111: ...9 FINAL REDUCTION 9 2 1 SCHEMATIC DRAWING ...
Страница 122: ...10 A C GENERATOR STARTER CLUTCH Downtown 125i 10 2 SCHEMATIC DRAWING ...
Страница 130: ...11 Crank Case Crank Shaft 11 2 1 Schematic Drawing ...
Страница 134: ...11 Crank Case Crank Shaft 11 6 Remove the oil seal from the left crankcase ...
Страница 156: ...14 FRONT ASSEMBLY 14 2 1 SCHEMATIC DRAWING ...
Страница 157: ...14 FRONT ASSEMBLY 14 3 ...
Страница 176: ...15 REAR ASSEMBLY 15 2 1 SCHEMATIC DRAWING ...
Страница 196: ...18 STARTING SYSTEM 18 2 1 Starting System Layout Battery Start Relay Start Motor ...
Страница 224: ...20 ANTI LOCK BRAKE SYSTEM ABS 20 5 Pre diagnosis Inspection Chart 1 ...
Страница 225: ...20 ANTI LOCK BRAKE SYSTEM ABS 20 6 Pre diagnosis Inspection Chart 2 ...