Variable timing system oil circuit of engine cylinder body assembly for miniature car

A variable timing system oil circuit of an engine cylinder body assembly for a miniature car comprises a VVT oil circuit and a hydraulic tensioner oil circuit, wherein the VVT oil circuit comprises a VVT oil circuit positioned inside the body of the cylinder body, a VVT oil circuit positioned inside the body of a cylinder cover, and a VVT oil circuit positioned in the bearing cover of a first camshaft; pressure oil and lubricating oil delivered to the VVTs enter into the body of the cylinder cover from the body of the cylinder body by passing through a Point Q, and then are divided into two ways by a Point B; a B-C oil circuit for driving the VVTs is divided into a VVT advance angle control oil circuit and a VVT delay angle control oil circuit after passing through an oil pressure control valve, and pressure oil of the two circuits respectively enters into the delay angle control oil circuit in the bearing cover of the first camshaft matched with the body of the cylinder cover and the advance angle control oi