WARNING!
Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related
component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instruc-
tions may result in serious personal injury.
Operation
The fuel pump and fuel delivery system are activated under the following conditions:
• With the ignition switch ON (engine off), the fuel delivery system is enabled for 3-6 seconds.
• When the Engine Control Module (ECM) receives a Crankshaft Position (CKP) sensor signal.
The fuel injectors are a solenoid-operated valve that meter fuel flow to each cylinder. The fuel injectors are opened
and closed constantly during engine operation. The amount of fuel is controlled by the length of time the fuel injector
is held open. The fuel injectors are powered by a 12 V source and are controlled through the ground side of the
circuit by the ECM.
The fuel pump operation is defined in the fuel system control strategy and is controlled by the ECM.
Specifications
Torque Specifications
DESCRIPTION TORQUE (N·m)
Fuel Rail Bracket Bolts 11
Fuel Pump Mounting Nuts 2
Fuel Pressure Specifications
DESCRIPTION PRESSURE
Fuel Pressure at Fuel Rail - Key On 350 kPa (3.5 bar)
Fuel Pressure at Fuel Rail - Key Off 330 kPa (3.3 bar) in 10 minutes
Fuel Pressure at Fuel Rail - Engine Idle 350 kPa (3.5 bar) - 370 kPa (3.7 bar)
GENERAL INFORMATION
04
04–3
Chery Automobile Co., Ltd.
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