... PERKINS engines jointly produced by Tianjin Engine CO., LTD. and England PERKINS CO., LTD.. The PERKINS engines are 4-cycle, ... volt meter, frequency meter, a.c. ampere meter, d.c. ampere meter, water temperature meter, oil temperature meter, oil pressure meter, fuel meter, ... speed);also can design for silent, fully automatic transfer and automatic parallel system. open frame diesel generator 20 ...