《大众可变气门正时系统 VVT（Variable Valve Timing）》.pdfVIP

Variable Valve Timing with fluted variator Design and Function The demands on combustion engines continue to In this self-study programme, we would like to grow. On one hand, customers want more power introduce to you the design and operation of the and torque, while on the other, one cannot lose new camshaft adjuster with fluted variators. At sight of fuel economy and increasingly stringent Volkswagen, first the 2.8 litre V6 and the 2.3 litre emissions laws. In regard to valve timing, this V5 engines will be equipped with this system. means that engine-speed and load dependent Later other engines, such as the W8 and W12 adjustment of the inlet and exhaust camshafts is engines will be equipped with this variable valve indispensable. timing system. Therefore, of course, adjustment systems are continuously being improved in technical design as well as in means of adjustment. 246_148 NEW Attention Note The self-study programme presents the design and operation of new developments. Please refer to the intended Service literature for current instructions for testing, The contents are not updated. settings and repairs. 2 Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 V