Engine-generator type 9GMG for shunting locomotives
JSC Kolomzavod in cooperation with ТМХ Holding Engineering Center developed and tested locomotive LNG engine type 9GMG to power shunting locomotive. Its construction is based on serial diesel engine type D49 (8CHN26/26), the both engines having over 80 % parts and components in common. This gas engine features internal carburation. The project included a dedicated test bed equipped with all needed controls and instrumentation. According to the test results, fuel gas consumption (in terms of heat input) is practically equal to that of the basis diesel engine, which results in reduction of fuel costs against similar diesel engines by 30-40 %. Also, noxious emissions are drastically reduced, and СО2 emissions are lowered by 50 % compared with similar diesel engines.