Dual Fuel Engine
The Dual Fuel engine is a kind of engine which utilizes a mixture of gas fuel or diesel fuel or can operate 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 utilize spark plugs.

As the engine is not a pure diesel engine and diesel is not a pure gas, this machinery does suffer from poor fuel efficiency and Methane slippage. Like for instance, the fuel efficiency can be 5% to 8% less than in a comparable spark-ignited, lean burn engine at 100 percent load. It can even be greater on lower loads.

Lift Truck Classification and Fuel Sources
There are some applications that have proved a challenge for the forklift. Like for instance, scrap metal is among these problems. In order to successfully handle items like this requires utilizing the correct type of machine for the job.

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

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

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