HANGZHOU AIX AUTOPARTS CO.,LTD.
HANGZHOU AIX AUTOPARTS CO.,LTD.
Key Technical Characteristics of the VVT System
High Quality Auto Spare Parts
Products

Key Technical Characteristics of the VVT System Key Technical Characteristics of the VVT System

The ultimate goal of the VVT system is to achieve real-time adjustment and control of camshaft timing. Like other control systems, the most critical technical features are as follows:
(1) Response speed: that is, the adjustment speed of the VVT system, which can adjust the angle at which the camshaft rotates per unit time. Among them, the structural parameters of the phaser itself have the greatest influence on the index, and can be measured by introducing a torque-to-pressure ratio parameter, which is only related to the phaser structure. In addition, the installation position of the OCV in the oil passage also has a large influence on the response speed of the VVT system.

(2) Control accuracy: that is, the degree of conformity between the actual phase angle of the VVT system and the target angle set by the ECU. In the VVT system functional test, it is usually characterized by a follow-up curve.

(3) Control stability: that is, the VVT system will interfere with the system when the external conditions change (such as engine oil pressure, temperature, etc.). Besides, whether the closed-loop control system can work stably is generally measured by the amount of adjustment angle fluctuation at a certain control position. In short, the above three indicators are closely related to the phaser, the structure as well as performance of the OCV itself, the system installation method, and the control algorithm.                                                                                                                                      
Related News
  • What is a belt tensioner?

    What is a belt tensioner?

    June 30, 2018A Drive Belt Tensioner is a pulley mounted to either a spring mechanism or to an adjustable pivot point that is used to keep constant tension on the serpentine belt. That is the big long belt in the f...view
  • The Knowledge of Clutch Release Bearing

    The Knowledge of Clutch Release Bearing

    May 7, 2019The clutch release bearing is generally composed of an angular contact ball bearing, a bearing seat (or a sliding seat) and their couplings. If the clutch release lever, the lever damper, the duct, an...view
  • The Working Principle of Car Water Pump

    The Working Principle of Car Water Pump

    May 7, 2019The engine drives the water pump bearing and the impeller through the pulley. The coolant in the water pump is rotated by the impeller, and is deflected by the centrifugal force to the edge of the wat...view
  • The OCV Oil Control Valve Structure of VVT System

    The OCV Oil Control Valve Structure of VVT System

    May 7, 2019The VVT system's OCV valve is a proportional valve, that is, the movement position of the spool is proportional to the PWM duty ratio provided by the ECU of the engine to the OCV coil. When the duty r...view
  • Wheel Hub Assembly must not be Fakes for Cheap

    Wheel Hub Assembly must not be Fakes for Cheap

    May 7, 2019The wheel hub assembly is an important step in the car modification. Whether it is appearance modification or improved handling performance, the wheel has played an important role in it. After the rig...view
  • How To Avoid The Scars Of Wheel Hub Assembly

    How To Avoid The Scars Of Wheel Hub Assembly

    May 15, 2019To avoid the scars of wheel hub assembly, it is needed to rinse the rim frequently at the beginning of using the car. The car you drive every day, you should rinse the rim of which every week. First w...view
HANGZHOU AIX AUTOPARTS CO.,LTD.