Dual Fuel Engine
The Dual Fuel engine is a type of engine that utilizes a mixture of diesel fuel and gas 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.

Since 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 example, the fuel efficiency may be 5% to 8% less than in a comparable lean-burn, spark-ignited engine at 100% load. It could even be greater on lower loads.

Lift Truck Fuel Sources and Classifications
There are certain applications which have proved a challenge for the forklift. For instance, scrap metal is among these problems. In order to successfully handle things like this needs using the right type of machinery for the job.

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

The most popular overall are electric powered trucks, mainly in Class III, II and class I forklifts. In Classes IV and V, internal combustion trucks are more popular. The most common 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 popular power source. Battery powered units make up around 60% of the new forklifts sold in the USA. Their benefits consist of: quiet operation, less maintenance requirements, the ability to be used outdoors and indoors with no harmful emissions.