Chevrolet Spark manuals

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

Mazda CX-5 Service & Repair Manual / Engine / Control / Hydraulic Variable Valve Timing Control

Outline

Block Diagram


Operation

Exhaust valve timing determination

OCV drive current determination

Range mode table


Mode name

Control description

Cleaning mode

  • Cleaning mode is to remove foreign material in the OCV oil passages.

    • Mode execution condition

    • During deceleration fuel cut

    • Engine speed: 2,250?3,500 rpm

    • Engine coolant temperature: 80°C {176°F} or more

Cam advance mode

  • If the cam advance is appropriate according to engine operation conditions such as while in torque down execution during idling, the cam advance mode advances the exhaust valve timing and stabilizes the engine speed.

    • Mode execution condition

    • When any of the following conditions is met:

      • During engine cranking

      • Idling

      • Engine speed: Less than 800 rpm

      • Engine coolant temperature: Less than 60 °C {140°F}

Feedback mode

  • The feedback mode constantly monitors whether the target exhaust valve timing is the determined value according to the engine operation conditions and controls the OCV drive current based on the results.

    • Mode execution condition

    • Except cleaning mode, cam maximum retard mode


Hydraulic Pressure Control System Outline [Fw6 A EL, Fw6 Ax EL]
Outline The hydraulic control mechanism consists of an oil cooler which maintains the hydraulic pressure at the optimum temperature, a control valve body and each shift valve which perfor ...

Inspection Of SST (Deployment Tool) [Standard Deployment Control System]
1. Before using the SST (49 H066 002), inspect its operation. Inspection Procedure 1. Follow the steps below to inspect the SST (49 H066 002). If not as indicated in the table, repl ...

Other materials:

Efficient Removal Of Body Panels
Body Measurements Before removal or rough?cutting, first measure the body at and around the damaged area against the standard reference dimension specifications. If there is deformation, use frame repair equipment to make a rough correction. Prevention of Body Deformation ...

Tcs/DSC Indicator Light
Purpose/Function The TCS/DSC indicator light, built into the instrument cluster, informs the driver of the following vehicle conditions. TCS is operating. (Drive wheel is slipping.) DSC is operating. (Vehicle side-slip condition.) Roll over mitigation (RO ...

Air Bag Module And Pre Tensioner Seat Belt Deployment Procedures [Standard Deployment Control System]
WARNING: A live (undeployed) air bag module or pre-tensioner seat belt may accidentally operate (deploy) when it is disposed of and cause serious injury. Do not dispose of a live (undeployed) air bag module or pre-tensioner seat belt. If the SSTs (Deployment tool and Adapter harness ...

© 2016-2024 Copyright www.mcx5.org