Mazda 6 MPS 2005, Training Manual Supplement

Page: 53 / 112

Engine L3 Turbo
Direct Fuel Injection System
•
High engine output and response are obtained through direct control with no time lag in
the amount of fuel in the combustion chamber.
•
A fine mist of fuel is injected due to the enhanced fuel pressure obtained via the high
pressure fuel pump. The temperature of the air intake from the turbocharger increases
due to the rise in pressure, but the temperature of the combustion chamber decreases
as a result of vaporization heat caused by refined atomization of the injected fuel. Due to
this, engine knocking is reduced, and high engine output is obtained.
•
Uniform combustion in all areas regardless of load conditions is obtained.
End Of
Construction
•
The direct fuel injection system consists of a high pressure fuel pump, fuel injectors,
injector driver module, fuel pressure sensor, and a relief valve.
M6-MPS_01034
1 Fuel tank 5 Fuel pressure sensor
2 High pressure fuel pump 6 Connected to injector driver module
3 Fuel injector 7 Fuel pump
4 Relief valve 8 Pressure regulator
Operation
•
Fuel is injected during the intake process and diffused uniformly in the combustion
chamber by the flow of intake air.
Service Training Mazda6 MPS Supplement 01-35