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:
Emission System
Purpose, Outline
A single-nano catalyst has been adopted for the under-floor, three-way catalyst
to improve emission gas purification efficiency.
Structural View
Engine compartment side
Exhaust system side
2WD
AWD
Fuel tank side
U.S.A. and CANADA (2WD)
U.S.A. a ...
Rear Window Defroster/Outer Mirror Heater
Outline
Fogging is cleared from the rear window and outer mirror glass by heating
of the filament.
Structural view
System wiring diagram
Vehicles with full-auto air conditioner system
Vehicles with manual air conditioner system
Construction
Rear window defroster
...
Seat Weight Sensor Inspection [Two Step Deployment Control System]
CAUTION:
If any of the following work is performed, perform the seat weight sensor
inspection using the M-MDS.
Removal of the passenger-side seat
Loosening and retightening of passenger’s seat fixing bolts
Or, the vehicle is involved in a collision
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