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:
Hydraulic Variable Valve Timing Actuator Inspection
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
CAUTION:
Do not disassemble the hydraulic variable valve timing actuator because it
is a precision unit.
1. Disconnect the negative battery cable..
2. Rem ...
Wheels And Tires
Outline
An adhesive-type balance weights has been adopted to the outer side of the
aluminum alloy wheels. Due to this, a stylish wheel design is realized.
In consideration of the environment, steel balance weights have been adopted
to reduce the use of lead in the vehicle.
...
Lower Cowl Side Reinforcement Installation [Panel Replacement]
Symbol Mark
Installation Procedure
1. When installing new parts, measure and adjust the body as necessary to conform
with standard dimensions.
2. Drill holes for the plug welding before installing the new parts.
3. After temporarily installing new parts, make sure the related parts fit p ...
