Car engine timing system

The present invention discloses an engine timing chamber structure. A cylinder head (3), an upper cam shaft frame (1) and a lower cam shaft frame (2) form the timing chamber; a timing chamber head (8) is added outside the timing chamber; the timing chamber head (8), the cylinder head (3), the upper cam shaft frame (1) and the lower cam shaft frame (2) are connected through a plurality of fastening bolts (9, 10, to,21) and a seal glue, thus forming an enclosed hollow cavity. The method of painting the flat anaerobic seal glue is adopted to seal the cylinder head (3) and the lower cam shaft frame (2) as well as the upper cam shaft frame (1) and the lower cam shaft frame (2); the timing chamber adopts silicon rubber sealing. The timing chamber structure provided by the present invention ensures not only the convenient installation and maintenance of the timing chain and the chain wheel but also no lubricant leakage required by the normal operation of the timing system; at the same time, the dust outside is unable to enter the timing chamber and affect the operation of the timing system. The present invention not only solves the installation and maintenance of the timing system but also simplifies the structure of the cylinder head and the cam shaft frame.