Dual Fuel Engine
The Dual Fuel engine is a type of engine that utilizes a mixture of gas fuel or diesel fuel or could run 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.

Since 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. For instance, the fuel efficiency may be 5% to 8% less than in a comparable spark-ignited, lean burn engine at 100% load. It could even be lower or higher loads.

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

There are 7 major lift truck classes, including power sources like hydrogen fuel cell, liquid propane gas, diesel, electric and gasoline. The power source is linked to several of these particular classes. The main power sources for forklifts consist of Gasoline, Battery, Diesel, Propane and Fuel Cell.

Electric powered trucks are the most popular, mostly Class I, II and class III 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, about over 90 percent are propane powered.

The battery is the forklifts most popular power source. Battery powered models make up approximately 60% of the new forklifts sold within the USA. Their benefits comprise: less maintenance requirements, quiet operation, the ability to be used indoors and outdoors with no harmful emissions.