... of hot flow type, the skirt section has oval barrel curved surface,the down section is of slipper structure,with two ... main technical parameters of CY4102BQ Model CY4102BQ Type Vertical, in-line, water-cooled, four strokes, natural aspirated No. of cylinder-bore ... truck, 6-7 m passenger bus ect. CY4102 Vertical, in-line, water-cooled, four strokes, natural aspirated