Dual Fuel Engine
The Dual Fuel engine is a type of engine which uses a mixture of gas fuel or diesel fuel or can work 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.

As 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.. Like for instance, the fuel efficiency can be 5% to 8% less than in a comparable lean-burn, spark-ignited engine at 100% load. It could even be lower or higher 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 one of these problems. To be able to successfully handle things like this requires utilizing the correct type of machinery 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, electric, gasoline and diesel. The power source is linked to several of these specific classes. The main power sources for forklifts comprise Gasoline, Battery, Diesel, Propane and Fuel Cell.

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. Out of internal combustion trucks, around more than 90 percent are propane powered.

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