Engine distributors DSG-423 User Manual

DSG-423 FUEL SYSTEM
04-3
GENERAL INFORMATION - GASOLINE
Description
The fuel system delivers fuel by an electronic fuel pump.
A fuel pressure regulator controls fuel pressure and also
contains a fuel filter. The Electronic Control Module
(GCP) uses information from various sensors and
controls fuel delivery to the cylinders by individual fuel
injectors mounted in the cylinder head near each intake
valve. Air delivery is controlled by an actuator.
Fuel Rail
The fuel rail is mounted to the top of the engine and
distributes fuel to the individual injectors. Fuel is
delivered to the fuel inlet tube of the fuel rail by the fuel
lines and hoses.
Fuel Injector
The fuel injector is a solenoid operated device mounted
to the cylinder head. The GCP energizes the solenoid,
which opens a valve to allow fuel delivery into the
cylinder.
Camshaft Position (CMP) Sensor
The Camshaft Position (CMP) Sensor is mounted in the
camshaft cover. This signal is sent to the GCP which
uses it to indicate the position of the #1 piston during its
power stroke. The GCP uses the CMP signal as a “sync
pulse” to trigger the injectors in the proper sequence.
This allows the GCP to calculate true sequential fuel
injection (SFI) mode of operation.
Engine Coolant Temperature (ECT) Sensor
The Engine Coolant Temperature (ECT) Sensor is a
thermistor mounted in the engine coolant stream in the
rear coolant outlet pipe. The GCP uses this information
to calculate the correct air/fuel mixture which varies with
engine temperature.
Actuator
The actuator controls air delivery into the cylinders. An
integral Throttle Position (TP) Sensor sends a signal to
the GCP indicating throttle position. The GCP
calculates fuel delivery based on throttle valve angle
(operator demand).
Camshaft Position
(CMP) Sensor
Engine Coolant
Temperature
(ECT) Sensor
Fuel Rail
Actuator
Injectors
GCP

Engine distributors DSG-423 Specifications

General

Brand	Engine distributors
Model	DSG-423
Category	Engine
Language	English