Dual Fuel Engine
The Dual Fuel engine is a kind of engine that utilizes a mixture of diesel fuel and gas fuel or can work off of diesel by its self. The dual fuel engine is not capable of running on gas alone. These engines do not have ignition systems and do not use spark plugs.

As the engine is not a pure diesel engine and diesel is not a pure gas, this equipment does suffer from poor fuel efficiency and Methane slippage. For instance, the fuel efficiency can be 5% to 8% less than in a comparable lean-burn, spark-ignited engine at 100% load. It could even be greater on lower loads.

Lift Truck Fuel Sources and Classifications
There are some applications that have proved a challenge for the forklift. Like for example, scrap metal is one of these problems. To be able to successfully handle things like this requires utilizing the right kind of machine for the job.

In this write-up, the 7 major lift truck classes are discussed, including the power sources such as liquid propane gas, hydrogen fuel cell, gasoline, diesel and electric. The power source is linked to some of these particular classes. The main power sources for forklifts consist of Diesel, Gasoline, Battery, Fuel Cell and Propane.

The most popular overall are electric powered trucks, mainly in Class III, II and class I forklifts. In Classes IV and V, internal combustion trucks are more common. The most common electric power source is the lead-acid battery. Amongst internal combustion trucks, approximately over 90% are powered by propane.

The most common power source for lift trucks is battery. Battery fueled models make up roughly 60% of the new forklifts sold in the United States. Their benefits include: less maintenance requirements, quiet operation, the ability to be used indoors and outside with no harmful emissions.