Dual Fuel Engine
Dual Fuel or DF Engines are the kind of engines that could operate on a mixture of gas fuel or diesel fuel or it could work on diesel fuel alone. Duel Fuel engines could not operate on gas alone because they do not posses an ignition system, nor do they have any spark plugs.

Because 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 can 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 Fuel Sources and Classifications
There are some recycling materials handling applications that could prove extremely difficult for lift trucks. For instance, scrap metal is amongst these problems. In order to successfully handle things like this needs using the right kind of equipment for the job.

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

Electric powered trucks are the most common, mainly 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. Among internal combustion trucks, around more than 90 percent are powered by propane.

The battery is the forklifts most popular power source. Battery powered units make up around 60 percent of the new forklifts sold within the USA. Their benefits comprise: quiet operation, less maintenance requirements, the ability to be utilized outside and inside with no harmful emissions.