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:
Refrigerant Pressure Sensor [Full Auto Air Conditioner]
Purpose
The refrigerant pressure sensor detects the refrigerant pressure in the refrigerant
cycle.
Function
The refrigerant pressure sensor converts the detected refrigerant pressure
to an electric signal and sends it to the PCM.
Construction
The refriger ...
Wheel Apron Component Removal [Panel Replacement]
Symbol Mark
Removal Procedure
1. Drill the 14 locations indicated by (A) from the front wheel housing side
shown in the figure.
2. Drill the 11 locations indicated by (B) shown in the figure.
3. Drill the 4 locations indicated by (C) shown in the figure.
NOTE:
When drilling t ...
Coolant Reserve Tank Removal/Installation
1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.
1
Wiring harness
2
Hose
3
Coolant reserve tank
(See Coolant Reserve Tank Removal Note.)
Coolant Reserve Ta ...
