Dual Fuel Engine
The Dual Fuel engine is a kind of engine which utilizes a mixture of diesel fuel and gas 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. Like 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 greater on lower loads.

Lift Truck Classification and Fuel Sources
There are certain recycling materials handling applications which could prove really challenging for lift trucks. For example, scrap metal is amongst these issues. To be able to successfully handle things like this requires using the right kind of machinery for the job.

There are 7 major lift truck classes, including power sources such as hydrogen fuel cell, liquid propane gas, electric, gasoline and diesel. 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 V and IV. The most popular electric power source is the lead-acid battery. Amongst internal combustion trucks, about over 90 percent are propane powered.

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