Nissan Juke Service and Repair Manual : Turbocharger boost control

Turbocharger boost control : SystemDiagram

Turbocharger boost control : System Description


Turbocharger boost control : System Description

INPUT/OUTPUT SIGNAL CHART

SYSTEM DESCRIPTION


SYSTEM DESCRIPTION

Depending on driving conditions, the ECM performs ON/OFF duty control of the turbocharger boost control solenoid valve and controls the boost by adjusting the pressure to the diaphragm of the boost control actuator.

When driving conditions demand an increase in boost, the ECM prolongs the ON time of the turbocharger boost control solenoid valve and moves the boost control valve towards the closing direction by reducing the pressure in the diaphragm of the boost control actuator. The emission gas to the turbine wheel is then increased. When driving conditions demand a decrease in boost, the ECM shortens the ON time of the turbocharger boost control solenoid valve and moves the boost control valve towards the opening position by increasing the pressure in the diaphragm of the boost control actuator. The emission bypassing to the turbine wheel is then increased. Thus, by performing the most optimal boost control, the ECM improves engine output and response.

NOTE

:
The boost varies depending on the vehicle and driving conditions.

BOOST CONTROL ACTUATOR LINE DRAWING

1. Turbocharger


1. Turbocharger
2. Boost control actuator 3. Turbocharger boost control solenoid valve
4. Recirculation valve
5. Turbocharger boost sensor (with intake air temperature sensor 2)

Engine protection control at low engine oil pressure: Vehicle front


    Exhaust valve timing control
    Exhaust valve timing control : System Diagram Exhaust valve timing control: System Description INPUT/OUTPUT SIGNAL CHART SYSTEM DESCRIPTION This mechanism hydraulically controls cam phases c ...

    Engine protection control at low engine oil pressure
    Engine protection control at low engine oil pressure : System Diagram Engine protection control at low engine oil pressure : System Description INPUT/OUTPUT SIGNAL CHART SYSTEM DESCRIPTION ...

    Other materials:

    B2110 shift position/clutch interlock switch
    DTC Logic DTC DETECTION LOGIC NOTE: If DTC B2110 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to PCS- 30, "DTC Logic". DTC CONFIRMATION PROCEDURE 1.PERFORM DTC CONFIRMATION PROCEDURE 1. Shift selector lever to the P position. 2. Turn ign ...

    Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
    The Supplemental Restraint System such as AIR BAG and SEAT BELT PRE-TENSIONER, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is include ...

    B1024 pass A/B deact SW
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSTIC RESULT With CONSULT-III 1. Turn ignition switch ON. 2. Perform Self Diagnostic Result mode of AIR BAG using CONSULT-III. Without CONSULT-III 1. Turn ignition switch ON. 2. Check the air bag warning lamp ...