Dual Fuel Engine
The Dual Fuel engine is a type of engine which uses a mixture of diesel fuel and gas fuel or could operate off of diesel by its self. The dual fuel engine is not capable of working 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 Methane slippage and fuel efficiency. Like for instance, the fuel efficiency could be 5% to 8% less than in a comparable lean-burn, spark-ignited engine at 100 percent load. It can even be lower or higher loads.

Lift Truck Classification and Fuel Sources
There are certain applications that have proved difficult for the forklift. For example, scrap metal is one of these issues. In order to successfully handle items like this requires utilizing the right kind of machine for the task.

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 comprise Diesel, Gasoline, Battery, Propane and Fuel Cell.

Electric powered trucks are the most common, mostly Class III, III and class I forklifts. Internal combustion engines are more common in Classes IV and V. The most common electric power source is the lead-acid battery. Amongst internal combustion trucks, around more than 90 percent are powered by propane.

The battery is the forklifts most popular power source. Battery powered models make up approximately 60% of the new forklifts sold in the United States. Their benefits consist of: quiet operation, less maintenance requirements, the ability to be used outside and inside with no harmful emissions.