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

Since 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.. For example, the fuel efficiency can be 5% to 8% less than in a comparable spark-ignited, lean burn engine at 100 percent load. It can even be lower or higher loads.

Lift Truck Classification and Fuel Sources
There are certain recycling materials handling applications that could prove very challenging for lift trucks. For example, scrap metal is amongst these issues. In order to successfully handle things like this needs using the right kind of machinery for the task.

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

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

The battery is the forklifts most popular power source. Battery fueled models make up around 60% of the new forklifts sold within the USA. Their benefits consist of: quiet operation, less maintenance requirements, the ability to be used outside and inside with no harmful emissions.