The GTI Bi-Fuel® System manufactured by Altronic offers an affordable and efficient means of operating industrial diesel engines utilizing both diesel and natural gas (or other available gas) as fuel sources.

This innovative, patented system, which requires no modification to the internal components of the engine, allows for operation on natural gas up to a maximum of 70%* of the fuel required to maintain the desired speed and load. Reduced exhaust emissions and fuel costs are just a few of the benefits of Bi-Fuel® operation.

The GTI Bi-Fuel® System operates by blending both diesel fuel and natural gas in the combustion chamber. This is achieved using a fumigated gas-charge design, whereby natural gas is pre-mixed with engine intake-air and delivered to the combustion chamber via the air-intake valve. The air-gas mixture is ignited when the diesel injector sprays a reduced quantity of diesel fuel into the chamber.

This diesel “pilot” acts as the ignition source for the primary air-gas combustible mixture. Because the Bi- Fuel System utilizes the OEM air-intake and diesel injection systems, no internal engine modifications are required for installation.

*Subject to gas quality and other application conditions.

Advantages of Bi-Fuel®

  • Converts industrial diesel engines to Bi-Fuel® operation by substituting up to 70% natural gas for diesel fuel
  • Save on operating fuel costs by using natural gas with return to 100% diesel operation at any time
  • Allows the use of available or interruptible gas supplies
  • No modification to internal engine components is required
  • Cleaner burning natural gas reduces exhaust emissions
  • Reduces requirements for on-site fuel storage
  • Unique, patented design ensures no loss of power or efficiency
  • Low cost and easy to install

What is Bi-Fuel®?

  • Bi-Fuel® is a “co-firing” of standard diesel fuel and natural gas (methane)
  • It is designed for use on conventional, heavy-duty diesel engines
  • No engine modifications are required
  • The GTI Bi-Fuel® Systems can be installed in the field or accomplished as an OEM up-fit
  • Natural gas typically substitutes up to 70% of the diesel fuel required to maintain a given speed and load

Primary Applications

  • Prime power
  • Peak shaving
  • Standby power
  • Distributed power generation
  • Pumping applications
  • Compressors

Characteristics of the GTI Bi-Fuel® System

  • Maintains diesel-like performance and efficiency
  • Compression ignition
  • Low gas supply pressure
  • Sophisticated Altronic engine protection system
  • Auto-switching of fuel modes
  • Non-intrusive, simple installation
  • Easy to operate