DDF LNG Subholding Gas Pertamina Potentially Contributes 37% Energy Efficiency on KAI's Power Car

Jakarta, July 6, 2022 – Pertamina's Gas Subholding through PT PGN LNG Indonesia (PLI) is optimistic about converting fuel to LNG fuel using the Diesel Dual Fuel (DDF) system on PT KAI's power cars. The DDF dynamic test observation on the Dharmawangsa power car Jakarta–Surabaya shows the efficiency and substitution value of diesel by gas/LNG.

“The dynamic test was successful. The cumulative efficiency obtained in the DDF system is 37 percent. Meanwhile, the existing Diesel Engine Generator (DEG) system efficiency is 35 percent," said President Director of PLI, Nofrizal.

Furthermore, the trials were also carried out to obtain the substitution value for diesel energy or the amount of gas used in the DDF system.

"In terms of gas substitution with an average load of 22 percent, the dynamic test can substitute about 43 percent of the existing fuel. The converted train has a 500 kVA power capacity. Based on the data we have obtained, if the load is 100%, the DEG fuel consumption can reach 110 liters per hour,” Nofizal said.

This trial uses the Fumigation System for Diesel Engines. The system is the simplest DDF system, does not need significant modifications to the diesel engine, and is easier to restore to the original. In addition, it can be adjusted according to the settings on KAI's DEG engine.

"All trials can be carried out properly and accepted by PT KAI. It is hoped that it will run according to the target, encouraging efficiency at PT KAI. It is because the fuel subsidy is quite large, given the increasing global fuel prices. Apart from that, it encourages the CNG utilization," Nofrizal said.

The LNG that will be used comes from Jambaran Tiung Biru or the East Java LNG Terminal, or other sources that can be used and support the LNG utilization for trains.

“From the trial, we got the DDF system operation overview, and the results show that LNG has the opportunity to be used as fuel for power cars. No less important, supporting PGN's role can develop new business potential in this infrastructure sector by providing natural gas energy for land transportation," Nofrizal concluded.**