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

As diesel is not a pure gas, and it is not a pure diesel designed engine, it has some disadvantages in the department of fuel efficiency, as well as Methane slippage.. Like for instance, the fuel efficiency can be 5% to 8% less than in a comparable lean-burn, spark-ignited engine at 100 percent load. It can even be greater on lower loads.

Lift Truck Classification and Fuel Sources
There are certain applications that have proved a challenge for the forklift. Like for instance, scrap metal is among these issues. In order to successfully handle things like this requires using the correct kind of machinery for the task.

There are 7 major lift truck classes, including power sources like hydrogen fuel cell, liquid propane gas, gasoline, diesel and electric. 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.

The most popular overall are electric powered trucks, mostly in Class I, II and class III forklifts. In Classes V and IV, internal combustion trucks are more popular. The most popular electric power source is the lead-acid battery. Out of internal combustion trucks, around more than 90 percent are propane powered.

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