Numerous forklifts are designed to run on propane gas. Propane-powered forklifts are really easy to refill. The gas is stored in a pressurized tank on the truck's rear. The propane is pushed into the engine, where it is converted into vapor and the vapor combines with air. The throttle of the forklift is used to control the flow of vapor. A spark plug ignites the mixture of air and vapor creating pressure that makes the pistons move. The pistons power the hydraulic pump and turn the wheels.
Forklifts that utilize propane are suggested for use in warehouses and other buildings because they are clean burning with low emissions.
The forklift's hydraulic system is what enables it to lift and transport really heavy objects from location to location. Cylinders, a pump and tubes make up the hydraulic system. The pump forces dense fluid through the tubing and into the cylinders. The pressure build up pushes a piston, which raises the forks. When the forks are lowered by the operator, the hydraulic fluid flows out of the cylinders and back in the pump.
Where maneuverability is necessary, propane forklifts are the most suitable. Unlike an automobile, a forklift uses its back wheels to turn, that allows the forklift to rapidly pivot on a tight radius.