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

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 lean-burn, spark-ignited engine at 100% load. It can even be lower or higher loads.

Lift Truck Classification and Fuel Sources
There are certain recycling materials handling applications which could prove extremely challenging for lift trucks. Like for example, scrap metal is one of these problems. In order to successfully handle items like this requires using the correct type of equipment for the job.

There are 7 major lift truck classes, including power sources such as hydrogen fuel cell, liquid propane gas, electric, gasoline and diesel. The power source is linked to several of these particular classes. The main power sources for forklifts comprise Battery, Diesel, Gasoline, Propane and Fuel Cell.

Electric powered trucks are the most popular, mostly Class III, III and class I forklifts. Internal combustion engines are more popular in Classes IV and V. The most popular electric power source is the lead-acid battery. Amongst internal combustion trucks, about over 90 percent are propane powered.

The battery is the forklifts most common power source. Battery fueled models make up about 60% of the new forklifts sold in the USA. Their benefits comprise: less maintenance requirements, quiet operation, the ability to be utilized indoors and outside with no harmful emissions.