November 22, 2020. OptiFuel Systems, a solution provider of zero emission rail, marine and generator products, is now taking orders for a new line of affordable 1,200 hp to 2,400 hp, 100% natural gas freight locomotives. All of the locomotives use OptiFuel’s proprietary, EPA rail certified engine (KOFSG11.9400), which feature 0.00 g-bhp/hr NOx and PM criteria emissions. Powered by 100% RNG/Biomethane, the locomotives can have energy-weighted carbon intensity (CI) value ratings that are 200 to 300% lower than even a 100% battery-electric locomotive powered by renewable energy such as solar or wind. OptiFuel certified rail engine is based on the Cummins ISX12N. Since 2016, the ISX12N on road engine has been utilized in more than 12,000 Class 8 long-haul trucks. With OptiFuel’s multi-engine configuration and instant stop and start capability, the fleet owner can expect to reduce fuel consumption by 20% to 40%, compared to a standard single engine locomotive configuration.

OptiFuel is providing a standard 5 year/10,000 hours warranty for all engine pods, CNG onboard storage system, and locomotive controls. Total semi-annual and annual maintenance hours for each engine pod are 8 to 10 hours. Just as in on road use, periods between locomotive engine overhaul are 18,750 to 25,000 hours with overhaul cost of around $20,000 per engine. All parts and supplies for the KOFSG11.9400, as well as the overhaul, can be purchased at any certified Cummins dealer or from OptiFuel. All CNG storage cylinders have a 20 years lifecycle that may be extended to 30 years.

OptiFuel is providing a variety of mobile or fixed refueling options depending on the operating conditions of a customer’s fleet. Customers can rent or purchase mobile refueling equipment, or OptiFuel can manage the refueling for the customer.

In addition to switcher production, OptiFuel has a U.S. Department of Energy (DOE) grant to demonstrate a zero emission, 4,400 hp line-haul locomotive powered with renewable natural gas (RNG).

More information in