1)Silent Cummins diesel engine ne have a good function. 2)three phases four wires. 3)brushless.50Hz; 4)easy to buy parts.. Cummins Inc., a global power leader, is a corporation that comprises business units of designing, manufacturing, distributing and engines servicing as well as other related technologies. Headquartered in Columbus, Indiana (USA), Cummins serves customers in approximately 190 ...