Dual Fuel Engine
The Dual Fuel engine is a type of engine that uses a mixture of gas fuel or diesel fuel or can run off of diesel by its self. The dual fuel engine is not capable of running on gas alone. These engines do not have ignition systems and do not utilize spark plugs.

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

Lift Truck Fuel Sources and Classifications
There are some applications which have proved difficult for the forklift. For example, scrap metal is among these issues. To be able to successfully handle things like this requires using the right kind of equipment for the task.

In this write-up, the 7 major lift truck classes are discussed, including the power sources like hydrogen fuel cell, liquid propane gas, gasoline, diesel and electric. The power source is linked to some of these particular classes. The main power sources for forklifts comprise Gasoline, Battery, Diesel, Fuel Cell and Propane.

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

The most popular power source for lift trucks is battery. Battery fueled models make up about 60 percent of the new forklifts sold in the USA. Their benefits consist of: less maintenance requirements, quiet operation, the ability to be used outdoors and indoors with no harmful emissions.