Mazda CX-5 Service & Repair Manual: 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:
Controller Area Network (Can)
Outline
The AWD control module (CM) sends and receives data to and from other modules
via the CAN system. Refer to MULTIPLEX COMMUNICATION SYSTEM for a detailed explanation
of the CAN system..
Data sent
AWD system status
Data received
Engine speed
Engin ...
PCM Configuration (Using As Built Data)
NOTE:
If the configuration is performed using As-Built data, the set value of the
personalization function is reset to the initial value (condition when shipped
from factory). Verify the set value with the customer and perform the personalization
function setting after performing th ...
Clutch Pedal Inspection [C66 M R]
NOTE:
For the clutch pedal inspection, note the following and measure each inspection
location.
Measure the center of the upper surface of the pedal pad for each inspection.
If the distance from the pedal pad to the floor covering is measured,
measure the short ...
