Common Rail Technology

The demand for diesel engines with lower emissions and improved fuel economy spurred the development of common rail fuel injection systems.

L'Orange GmbH developed the world's first common-rail injection system for diesel engine applications in 1994.

The name "common rail" is taken from the fact that the injector is fed fuel from a high pressure pump as shown in the above picture. Common rail pressures can reach 14,000 to 18,000 psi. Fuel is injected by opening and closing the injector electronically which allows complete control of injection timing and pressure to meet the engine's needs while minimizing emissions and maximizing fuel consumption.

Continuous demand for higher horsepower and performance has led to the development of this new, inline four cylinder pump to replace the radial piston pump in the original common rail system. This new pump produces 30 liter/min. of fuel at 18,000 psi vs. the original output of the radial piston pump of 20 liter/minute.

Additional information is available by contacting Fluid Mechanics, Inc.