Kia Niro: Engine Control System / Variable Force Solenoid (VFS) Description and operation

Kia Niro 2017 (DE HEV) Service Manual / Engine Control/Fuel System / Engine Control System / Variable Force Solenoid (VFS) Description and operation

Description

Continuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine speed and load. By controlling CVVT, the valve overlap or underlap occurs, which in turn improves fuel efficiency, reduces exhaust gases (NOx, HC) and improves engine performance by reducing pumping loss, generating internal EGR effect, improving combustion stability, improving volumetric efficiency and increasing expansion work. This system consists of the Variable Force Solenoid (VFS) which supplies engine oil to the cam phaser or cuts engine oil supply from the cam phaser in accordance with the ECM PWM (Pulse With Modulation) control signal, and the Cam Phaser which varies the cam phase by using the hydraulic force of the engine oil. Variable Force Solenoid (VFS) [intake] changes its force depending on the PWM duty to control the stroke of the CVVT oil control valve (OCV) [intake] bolt. The delivered oil rotates the rotor connected to the camshaft of the cam phaser and rotates the camshaft to the engine rotating direction (intake advanced / exhaust retarded) or the opposite direction (intake retarded / exhaust advanced) to change the phase angle of the cam.

Variable Force Solenoid (VFS) [Bank 1 / Intake]

Purge Control Solenoid Valve (PCSV) Repair procedures
Inspection 1. Switch "OFF" the ignition. 2. Disconnect the PCSV connector. 3. Measure resistance between the P ...

Variable Force Solenoid (VFS) Schematic diagrams
Circuit Diagram Harness Connector ...

Other information:

Kia Niro (DE HEV) Owners Manual: Tire rotation
To equalize tread wear, it is recommended that the tires be rotated every 12,000 km (7,500 miles) or sooner if irregular wear develops. During rotation, check the tires for correct balance. When rotating tires, check for uneven wear and damage. Abnormal wear is usually caused by incorrect tire ...

Kia Niro (DE HEV) Owners Manual: Trip A/B
Tripmeter (1) The tripmeter is the total driving distance since the last tripmeter reset. - Distance range: 0.0 ~ 9999.9 km or mi. To reset the tripmeter, press the OK button (reset) on the steering wheel for more than 1 second when the tripmeter is displayed. Average Vehicle Speed ( ...

© 2016-2019 www.kniro.net