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The Caterpillar 3406 is an inline-6 diesel internal combustion engine family manufactured by Caterpillar. The engine had multiple variants from the 3406A which began production in 1973 and ended with the 3406E which ended production in 1999. The 3406E was replaced by the C15 and C16 in 2000. The engine variants were widely used in multiple applications ranging from mining to heavy-duty trucks to forestry, marine, heavy equipment, and power generation. It is one of the most widely sold Cat engines with the total amount sold around 575,000.[1]
3406A
editThe 3406A was the first variant produced by Caterpillar. Starting production in 1973 and ending in 1987. This engine variant was used primarily in heavy-duty trucks, heavy equipment and generator applications.
The engine had a displacement of 14.6 litres and produced 310-425 hp and 1090-1460 Ib-ft of torque depending on the application.
3406B
editThe 3406B was the updated and improved version of the 3406A, the engine displacement remained at the same at 14.6 litres. But the power output increased to 350-525 hp and 1350-1750 Ib-ft of torque depending on the application. This engine was primarily used in heavy-duty trucks and heavy equipment. This engine variant was produced from 1987 to 1991.
3406C
editThe 3406C was the last variant produced before the full switch to electronic injection. This engine variant was a transitory engine from the mechanical 3406B to fully electronic injection 3406E. The engine was a mix of mechanical and electronic fuel injection.This engine variant used Caterpillar's programmable electronic engine control (PEEC).The engine displacement remained the same at 14.6 litres, but the power output increased to 365-625 hp and 1350-2050 Ib-ft of torque depending on the application. It was primarily used in heavy-duty trucks, heavy equipment and marine applications. This engine variant was produced from 1991 to 1993.
3406E
editThe 3406E was the final and the most advanced engine variant produced from the 3406 engine family. It begin production in 1993 and ended in 1999 where it was succeeded by the C15 and C16. This engine variant used electronic unit injectors and produced 435-800 hp and 1450-2250 Ib-ft of torque depending on the application. It was used in heavy-duty trucks, heavy equipment and marine applications.
References
edit- ^ "Caterpillar 3406 Engine History". wellfarengineparts. 2024/03/01. Retrieved 2024/11/11.
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