Chevrolet Spark manuals

Mazda CX-5 Service & Repair Manual: Variable Valve Timing Mechanism

Mazda CX-5 Service & Repair Manual / Engine / General / Variable Valve Timing Mechanism

Outline

Structural View


Structure


Part name

Function

Hydraulic variable valve timing actuator

The hydraulic variable valve timing actuator operates according to the hydraulic pressure and changes the phases of the exhaust camshaft.

Electric variable valve timing actuator

The electric variable valve timing actuator changes the phases of the intake camshaft.

Electric variable valve timing motor/driver

Operates the electric variable valve timing actuator based on the signals from the PCM.

OCV

Operated by current (duty signal) from the PCM. Controls the hydraulic oil passages to the hydraulic variable valve timing actuator.

Intake camshaft position sensor

Sends the intake camshaft position signal to the PCM.

Exhaust camshaft position sensor

Sends the exhaust camshaft position signal to the PCM.

Crankshaft position sensor

Sends the crankshaft position signal to the PCM.


Operation

At engine start

Light/medium load range

* Energy loss which occurs from each type of resistance corresponding to intake and exhaust is called pumping loss.

High load range

Valve Mechanism
Outline A DOHC type valve system has been adopted and consists of four valves (two intake valves and two exhaust valves) per cylinder for a total of 16 valves operated by two camshafts. ...

Belts, Hoses, Pulleys
...

Other materials:

Front Accessory Socket Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the front console.. 3. Insert a tape-wrapped flathead screwdriver into the gap between the cap tab and socket. 4. Move the flathead screwdriver in the direction of the arrow (1) shown in the figure, press the front accessory socket i ...

Automatic Transaxle Warning Light [Fw6 A EL, Fw6 Ax EL]
Purpose/Function The automatic transaxle warning light illuminates when the transaxle has malfunction. Construction The automatic transaxle warning light is built into the instrument cluster. Operation If the transmission has a malfunction, the TCM sends an ...

Awd Control Module
Purpose, Function The AWD CM calculates the optimal amount of torque distribution for the rear wheels and outputs a corresponding electric current to the electronic control coupling (AWD solenoid). This calculation is based on the accelerator pedal angle, four-wheel speed, engine spe ...

© 2016-2019 Copyright www.mcx5.org