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:
Specifications
Specifications
Engine
Electrical System
CAUTION
When cleaning the iridium plugs, do not use a wire brush. The fine particulate
coating on the iridium alloy and platinum tips could be damaged.
Lubricant Quality
NOTE
Refer to Introduction on for owner's responsibility in prot ...
Rear Seat Cushion Trim Removal/Installation
CAUTION:
When removing or putting in the rear seat cushion, contact with the surrounding
areas of the vehicle could cause scratches and damage. When removing or putting
in the rear seat cushion, always use two or more persons to perform the work
and be careful not to scratch or dama ...
Engine Transaxle Integration Control [Fw6 A EL, Fw6 Ax EL]
Outline
The TCM controls engine output torque and reduces transaxle output shaft
torque fluctuation during auto shifting, and reduces shock occurring from the
vehicle during shifting.
Construction
Operation
During auto shifting, the TCM sends the torque reduction reque ...
