Mazda CX-5 Service & Repair Manual: Miller Cycle Engine

Mazda CX-5 Service & Repair Manual / Engine / General / Miller Cycle Engine

Outline

The Miller cycle engine is a high-efficiency engine which achieves high fuel economy performance by obtaining a high-expansion ratio.
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:

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1. Disconnect the negative battery cable.. 2. Remove the front over fender.. 3. Remove the mudguard (RH).. 4. Remove the windshield wiper arm and blade.. 5. Disconnect the windshield washer hose A from the washer motor. 6. Remove the windshield washer hose A from the washer tank hook. 7. ...

Generator Inspection [Skyactiv G 2.0]
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Cooling System
Outline Passing water resistance is reduced by improvement of the engine coolant passage shape. Pump efficiency is improved by changing the water pump impeller to the closed impeller. Structural View Flow Chart Structure Consists of the followi ...