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:

Clutch Pedal Position (CPP) Switch [Skyactiv G 2.0]
Purpose/Function Detects the connection status of the clutch. Construction Installed on the clutch pedal. An ON/OFF type switch has been adopted. Operation Inputs the CPP switch on/off signal to the PCM. The contact point is on and voltage ...

Engine Mount Disassembly/Assembly
No.1 Engine Mount (2WD) 1. Remove the front under cover No.2.. 2. Remove in the order indicated in the table. 3. Install in the reverse order of removal. 1 No.1 engine mount rubber (See No.1 engine mount rubber removal note (2WD).) (See No.1 engine mount inst ...

All Wheel Drive System
Outline The electronic all-wheel drive (AWD) control system automatically and optimally controls drive torque distribution for the front and rear wheels. Due to this off-road mobility and driving stability are improved. Based on the input signals from each sensor, the AWD contro ...