Doosan Diesel Forklifts Houston

Lift truck Engines

Forklifts are classed as vehicles with small engines. Forklift engines all follow the principles of internal combustion, while the many makes and models of lift truck will have a different layout and design. Forklifts are made more toward producing high torque rather than for speed. They normally are geared to low speeds. The engine runs the drive wheels of the forklift. The engine is also needed to lower and lift the forks via a series of chain pulleys. The majority of forklift engines that are modern are fueled by propane since they would be used for indoor applications, where diesel and gasoline engines would be unsuitable due to the exhaust they produce.



A four-cylinder engine-block is usually found in a lift truck. A lot like the engine in small cars, forklift engines have cylinders that contain pistons connecting to a camshaft. Every cylinder head has a spark plug, an intake hatch and an exhaust hatch, each of them one-way and spring-loaded.



Engine Function

When the operator starts up the engine of the forklift, propane passes through the opened throttle-plate in a fine spray and mixes together with air coming from the mass air intake prior to moving into the head intake hatches of the cylinder. Each and every one of the four pistons is staggered to rise in an exact sequence, compressing the mixture of propane and air as each piston rises to the top of the head. With very exact timing, the engine's battery and alternator produce an electrical current that passes through the spark plug. The fuel ignites leading to an explosion which drives the piston back down to the bottom of the cylinder, causing a continuous turning of the camshaft. In the cylinder, an air pressure imbalance causes the the exhaust hatch to draw out exhaust as more fuel passes into the cylinder. Propane burns much cleaner than gasoline and diesel and the exhaust is not as harmful.

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