Dual Fuel Engine
The Dual Fuel engine is a kind of engine that uses a mixture of diesel fuel and gas fuel or could 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 diesel is not a pure gas, and it is not a pure diesel designed engine, it has some disadvantages in the department of fuel efficiency, as well as Methane slippage.. Like for example, the fuel efficiency can 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 Classification and Fuel Sources
There are certain applications that have proved difficult for the forklift. For example, scrap metal is among these problems. In order to successfully handle things like this requires using the right type of equipment for the job.

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 particular classes. The main power sources for forklifts consist of Diesel, Gasoline, Battery, Fuel Cell and Propane.

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

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