Chevrolet Spark manuals

Mazda CX-5 Service & Repair Manual: Purge Control

Outline

Block Diagram


Operation

Determination of purge solenoid valve energization time

Calculation method for purge flow amount


Contents

Calculation or determination method of purge flow amount and correction

Target purge flow amount

The target purge flow amount is determined by multiplying the correction for the intake air temperature and the fuel evaporative gas concentration with the purge mass volume. The purge mass volume is calculated from the purge intake rate for the intake air mass volume which differs according to engine conditions.

Correction

Startup correction

Purpose: Prevents a change in the air/fuel ratio due to a purge intake lacking evaporative gas concentration in the charcoal canister.

    During purge control startup

  • Determined according to the target purge flow amount.

Volume decrease correction

Purpose: Decreases the purge flow amount and stabilizes the air/fuel ratio.

    Unstable combustion condition (feedback correction value for fuel injection control is unstable)

  • Determined according to the A/F sensor feedback conditions.


Purge control image


Operation condition

Pressure Sensor [Two Step Deployment Control System]
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Room Light Control System
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Other materials:

Adjuster Anchor Removal/Installation
WARNING: The side air bag sensor is attached to the lower part of the B-pillar. When working around the B-pillar, disconnect the negative battery cable or work carefully, avoiding excessive impact to the lower part of the B-pillar (with side air bag sensor No.1). 1. Switch the ...

Auxiliary Jack/Usb Port Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the upper console.. 3. While pressing the auxiliary jack/USB port. tabs in the direction of the arrows (1) shown in the figure, press the auxiliary jack/USB port. in the direction of the arrow (2) to detach the auxiliary jack/USB port. tab ...

Hazard Warning Switch Inspection
1. Disconnect the negative battery cable.. 2. Remove the decoration panel.. 3. Verify that the continuity between the hazard warning switch terminals is as indicated in the table. If the continuity is as indicated in the table, go to the next step. If not as indicated i ...

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