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:
AWD
All-Wheel Drive (AWD) Operation
• AWD provides excellent drivability
on snow-covered and ice-packed roads, sand and mud, as well as on steep slopes and
other slippery surfaces.
• A system malfunction or operation conditions
are indicated by a warning.
Refer to Warning/Indicator Light ...
Tire Pressure Monitoring System
Tire Pressure Monitoring System
• The Tire Pressure Monitoring System (TPMS)
monitors the air pressure of all four wheels. If the air pressure of one or more
tires is too low, the system warns the driver by indicating the tire pressure monitoring
system warning light in the instrument clust ...
After Service Precaution
WARNING:
Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious
injuries or death and damage. When installing the fuel hose, perform “Fuel Leakage
Inspection” described below.
A person charged with static electricity could cause a fire or explosion,
...
