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:
Differential Oil Temperature Sensor Inspection
WARNING:
Hot differential oil may cause severe burns. Do not perform maintenance while
differential oil is hot.
1. Disconnect the negative battery cable.
2. Disconnect the differential oil temperature sensor connector and remove the
differential oil temperature sensor.
3. Wrap ...
Fuel Injector Relay [Skyactiv G 2.0]
Purpose, Function
Supplies power to the PCM for the fuel injector and spill valve control solenoid
valve operation.
Construction
The fuel injector relay is installed in the relay and fuse block.
Operation
When the ignition is switched ON, the battery voltage ...
Liftgate Hinge Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Rear scuff plate.
b. Trunk end trim.
c. Trunk side trim.
d. C-pillar trim.
e. D-pillar trim.
f. Liftgate.
3. Remove fasteners.
4. While partially peeling back the rear part of the headliner, remove nut ...
