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Cummins B Series engine
The Cummins B Series is a family of American straight-four and straight-6 diesel truck and industrial piston engines that are manufactured by Cummins. The B Series is known for the popular straight-four and straight-six motors. A straight-four is also available. The B Series is widely used in many segments, including pickup trucks (the Dodge Ram), buses, military vehicles, construction equipment, and marine. Some of the construction and marine applications use a dual installation, of two B series Cummins engines. The engine was originally designed by Cummins and Case Corporation for commercial truck applications, and gained much of its popularity after appearing in the Dodge Ram, in 1989.
==General engine features==
The B-series features engine bores machined directly into the block (rather than the wet liners used on earlier Cummins engines). It was also set apart by the use of a shallow one-piece head, requiring closer tolerances than in other Cummins products. The engine was first manufactured in Rocky Mount, North Carolina, and other plants were later added in Mexico, Turkey, and Darlington, UK.〔Kennett, p. 57〕
Every Cummins powered Dodge Pickup (since initial production in 1989) has come equipped with a turbocharger. It uses a gear-drive camshaft for extra reliability. Also specified is a deep-skirt engine block and extra-strong connecting rods. A Holset turbocharger is used. The original B Series was updated with 24 valves and an electronic engine management system to become the ISB in 1998.
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