49 passenger bus_standard manual transmission

In an oil-cooled engine, the engine oil circulates through passages within the engine block and oil cooler. As the oil passes through these areas, it absorbs heat from the engine components. The heated oil then flows to an external oil cooler, which is often similar in function to a radiator. Here, air or, in some designs, water cools the oil before it recirculates back into the engine. This continuous cycle helps maintain a stable operating temperature, even under strenuous conditions.


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A 2-cycle engine completes a power cycle in just two strokes of the piston, resulting in one power stroke for every revolution of the crankshaft. This is in stark contrast to a 4-cycle engine, which requires four strokes of the piston—intake, compression, power, and exhaust—to complete a cycle. The simplicity of the 2-cycle design allows for fewer moving parts, which contributes to its lightweight and compact construction.


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