Mazda CX-5 Service & Repair Manual: Connecting Rod, Connecting Rod Bearing
Purpose, Function
Connecting rod
-
The connecting rod transmits the reciprocating movement of the piston to the crankshaft by engaging the piston pin and crank pin.
Connecting rod bearing
-
The connecting rod bearing forms an oil film on the outer surface of the crank pin to prevent wear due to sliding.
Construction
Connecting rod
-
The connecting rod is installed between the piston pin and crank pin.
-
High-strength, forged carbon steel has been adopted for weight reduction.
-
A cracking method*1 for breaking off and separating the connecting rod from the connecting rod cap has been adopted for improved accuracy.
-
Weight has been reduced by optimizing the shape from the I shaft to the large end.
-
Reciprocating inertial weight, including the piston, has been reduced with the use of a full-float type for the connection with the piston and further tapering of the small end shape.
-
With the adoption of the plastic region tightening*2 method for the connecting rod bolt, the stability of the axial force has been improved.
*2 Plastic region tightening is a method of controlling the tightening using the rotation angle of a bolt. By tightening to the region (plastic tightening region) in which bolt deformation does not become irreversible, variation in axial force is suppressed.
Connecting rod bearing
-
The connecting rod bearing is installed on the outer surface of the crank pin.
-
The upper and lower connecting rod bearing are made of aluminum alloy.
Piston Assembly
...
Piston, Piston Ring, Piston Pin
Purpose, Function
Piston
The piston in the cylinder of the cylinder block moves reciprocally by the
pressure received when the air-fuel mixture combusts.
Piston ring
The piston ...
Other materials:
Brake
Brake System
Foot Brake
Your Mazda has power-assisted brakes that adjust automatically through normal
use.
Should power-assist fail, you can stop by applying greater force than normal
to the brake pedal. But the distance required to stop will be greater than usual.
WARNING
Do not coast wi ...
Rain Sensor
Outline
The rain sensor detects the amount of rainfall and calculates the wiper operation
speed, and outputs a windshield wiper control signal to the front body control
module (FBCM) to perform automatic wiper operation (auto wiper system) according
to the amount of rainfall.
...
Drive By Wire Control
Outline
Calculates the optimum target throttle valve opening angle at all engine
speeds and controls the throttle valve actuator.
The drive-by-wire control is composed of the idle air control, accelerator
control, traction control, excess engine speed control, overspeed control, ...