Dual Fuel Engine
The Dual Fuel engine is a type of engine which utilizes 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 working on gas alone. These engines do not have ignition systems and do not utilize spark plugs.

Because the engine is not a pure diesel engine and diesel is not a pure gas, this equipment does suffer from Methane slippage and fuel efficiency. For example, the fuel efficiency could be 5% to 8% less than in a comparable lean-burn, spark-ignited engine at 100 percent load. It can even be lower or higher loads.

Lift Truck Fuel Sources and Classifications
There are some recycling materials handling applications which could prove very challenging for lift trucks. For instance, scrap metal is amongst these problems. To be able to successfully handle items like this requires using the correct kind of equipment for the task.

In this write-up, the 7 major lift truck classes are discussed, including the power sources such as 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 Gasoline, Battery, Diesel, Propane and Fuel Cell.

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

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