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:
Front Lower Arm Inspection
1. Remove the front lower arm..
2. Inspect the front lower arm for bending or damage, and the front lower arm
ball joint for excessive looseness.
If there is any malfunction, replace the front lower arm.
3. Rotate the front lower arm ball joint stud 5 times. Install the
SST ...
Tire Pressure Monitoring System Set Switch
Purpose
The tire pressure monitoring system set switch is used to initialize the
tire pressure monitoring system.
Construction, Operation
The tire pressure monitoring system set switch is installed to the instrument
panel.
The tire pressure monitoring sy ...
Oil Pump [Skyactiv G 2.0]
Outline
The oil pump has a mechanism for feedback control of oil pressure. As a result,
an oil pressure increase of more than the set pressure is suppressed and oil
pump drive resistance is reduced. In addition, because the set pressure can
be changed (oil pressure two-step control) ...
