Mazda CX-5 Service & Repair Manual: Miller Cycle Engine
Outline
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The Miller cycle engine is a high-efficiency engine which achieves high fuel economy performance by obtaining a high-expansion ratio.
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The Miller cycle engine achieves a high-expansion ratio without increasing its effective compression ratio by retarding the intake air valve close timing.
Operation
1. Intake air is introduced into the cylinder.
2. The intake valve is kept open after the intake stroke is finished to force the air in the cylinder to flow back to the intake pipe.
3. The compression stroke starts from the position in which the intake valve is closed (small compression).
4. The air-fuel mixture is combusted and the piston is pushed down to BDC (large expansion).
Mechanical
Outline
The sliding resistance*1 has been reduced by:
the adoption of a rocker arm (built into needle roller bearing)
reducing load on the valve spring
narrow ...
Non Return Valve Inspection
WARNING:
Fuel is very flammable liquid. If fuel spills or leaks from the pressurized
fuel system, it will cause serious injury or death and facility breakage. Fuel
can also irritate skin ...
Other materials:
Cooling Fan Relay [Skyactiv G 2.0]
Purpose, Function
The cooling fan relay operates by receiving the signal from the PCM to supply
power to the cooling fan motor.
Construction
The cooling fan relay is installed on the relay and fuse block.
Operation
The contact point is on when the battery vo ...
Shroud Upper Reinforcement Removal [Panel Replacement]
Symbol Mark
Removal Procedure
1. Drill the 4 locations shown in the figure.
NOTE:
When drilling the 4 locations shown in the figure, do not drill a hole all
the way through or there could be a problem when installing the new part.
2. Remove the shroud upper reinforcement ...
Audio Unit (With Color LCD)
NOTE:
“iPod” is a registered trademark of Apple Inc. in the United States and other
countries.
Purpose
The audio unit controls the CD, radio, exterior input devices (AUX/USB/iPod)
and the display.
Function
Records the following items which the user has set ...
