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The Cummins Turbo Technologies unit designs and manufactures turbochargers and related products on a global scale, for diesel engines above 3 liters. Its Emission Solutions unit develops and supplies catalytic exhaust systems and associated products to the medium and heavy-duty commercial diesel engine markets.
Diesel engines are typically well suited to turbocharging due to two factors: A "lean" air–fuel ratio, caused when the turbocharger supplies excess air into the engine, is not a problem for diesel engines, because the torque control is dependent on the mass of fuel that is injected into the combustion chamber (i.e. air-fuel ratio), rather than the quantity of the air-fuel mixture.
The 3.9-liter 4B/4BT/4BTA Cummins is categorized under the B Engine family alongside the 5.9-liter 6B/6BT/6BTA Cummins diesel engines. The 3.9 is an inline four-cylinder, either naturally aspirated (4B) or turbodiesel (4BT/4BTA), which was popular for many step van applications including bread vans and other commercial vehicles. Additionally it ...
A turbocharger does not place a direct mechanical load on the engine, although turbochargers place exhaust back pressure on engines, increasing pumping losses. [ 52 ] Supercharged engines are common in applications where throttle response is a key concern, and supercharged engines are less likely to heat soak the intake air.
1992: A Banks Power-developed twin air intake and intercooler system results in a claimed 80-hp improvement on the factory-turbocharged Dodge Cummins engine. 1993: The Banks "Sidewinder" aftermarket turbocharger is introduced. Tests show that turbo-lag times decrease and throttle response improves when compared with factory turbochargers.
The Cummins L-series engine is a straight-six diesel engine designed and produced by Cummins. It displaces 8.9 litres (543.1 cu in ), and began production in 1982 as the L10 at the Jamestown Engine Plant in Jamestown, New York .
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