Doosan Diesel Forklifts San Diego

Lift truck Engines

Forklifts are classified as vehicles with small engines, the same class in which lawnmowers are classed. Forklift engines all follow the principles of internal combustion. Different forklift models and brand names would have varying engine design and layout. Forklifts are designed more toward generating high torque than for speed. They generally are geared to low speeds. The engine powers the forklift's drive wheels. The engine is also required to raise and lower the forks via a series of chain pulleys. Nearly all modern lift truck engines are powered by propane as they would be utilized indoors, where gasoline and diesel engines will be unsuitable due to the exhaust they create.



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



Engine Function

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

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