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:
Air Bag System Warning Light [Two Step Deployment Control System]
Purpose
The air bag system warning light notifies the driver of a malfunction in
the SRS air bag system.
Function
If a malfunction occurs in the SRS air bag system, the air bag system warning
light illuminates or flashes.
Construction
LEDs (light-emitting d ...
Horn
Purpose, Function
The horn sounds according to the horn switch operation.
Construction
Installed to the inside of the front grille.
The diaphragm is vibrated to apply vibration to the air and produce sound.
Operation
1. When the horn switch turns on (1), the ho ...
Automatic Transaxle Fluid (ATF) Replacement [Fw6 A EL, Fw6 Ax EL]
WARNING:
Do not perform the servicing while the ATF is hot. Otherwise, it could cause
severe burns or serious injury.
1. Remove the front under cover No.2..
2. Remove the dipstick securing bolt.
3. Remove the dipstick.
4. Remove the drain plug and washer, and drain the ATF ...
