Mazda CX-5 Service & Repair Manual: Direct Fuel Injection System
Purpose, Outline
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Engine output has been improved through the direct injection of fuel into the combustion chamber.
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High response can be because there is no time lag from when the fuel injection starts until the fuel is provided to the combustion chamber.
Structure
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The direct fuel injection system consists of the following parts.
|
Part name |
Reference |
|
High pressure fuel pump |
(See HIGH PRESSURE FUEL PUMP [SKYACTIV-G 2.0].) |
|
Fuel injector |
(See FUEL INJECTOR [SKYACTIV-G 2.0].) |
|
Fuel distributor |
(See FUEL DISTRIBUTOR [SKYACTIV-G 2.0].) |
|
Fuel pressure sensor |
(See FUEL PRESSURE SENSOR [SKYACTIV-G 2.0].) |
|
Relief valve |
? |
Operation
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Fuel is supplied from the high pressure fuel pump into the fuel distributor, and the fuel injector injects the fuel into the cylinder. Fuel is injected during the intake stroke and diffused uniformly in the combustion chamber by the flow of intake air. For the fuel injection control, refer to the CONTROL SYSTEM..
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The fuel pressure sensor detects the fuel pressure in the fuel distributor and sends a fuel pressure signal to the PCM. Based on the signal from the fuel pressure sensor, the PCM controls the high pressure fuel pump so that the fuel pressure is in accordance with the driving conditions. For the high pressure fuel pump control, refer to CONTROL SYSTEM..
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Fuel pressure is adjusted by the spill valve control solenoid valve, and a relief valve is equipped to ensure safety in case of a malfunction. If the fuel pressure in the high pressure fuel pump reaches the set pressure, the relief valve is mechanically opened and fuel is returned to the fuel tank side.
Check Fuel Cap Warning Light
Purpose/Function
The check fuel cap warning light is built into the instrument cluster.
If the PCM detects that the fuel cap is open, the light illuminates to warn
the driver that th ...
Fuel Distributor
Purpose, Function
Distributes fuel pumped from the high pressure fuel pump to each fuel injector.
Construction
The fuel distributor is installed to the cylinder head.
...
Other materials:
Front ABS Wheel Speed Sensor Removal/Installation
1. Remove the mudguard..
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
4. After installation, verify that there is no twisting in the front ABS wheel-speed
sensor.
1
Connector
2
Bolt
...
Intake Air Temperature (Iat) Sensor Inspection
IAT Sensor No.1
Resistance inspection
NOTE:
Because the IAT sensor No.1 is integrated in the MAF sensor, replacing the
IAT sensor No.1 includes replacement of the MAF sensor/IAT sensor No.1.
1. Disconnect the negative battery cable..
2. Disconnect the MAF sensor/IAT sensor No.1 ...
Air Mix Actuator Removal/Installation [Full Auto Air Conditioner]
Driver-side
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Side wall (driver-side).
b. Front heat duct (LH).
3. Disconnect the air mix actuator connector.
4. Remove the screw.
5. Remove the driver-side air mix actuator.
6. Install in the reverse order ...
