The Cummins 4BT is a four-cylinder, in-line, turbocharged diesel engine.
It has a displacement of 3.9 liters (239 cubic inches) and is part of Cummins' B Series engine family. The engine features a cast-iron block and cylinder head, providing robustness and strength to withstand heavy-duty construction environments.
One of the key highlights of the 4BT engine is its power and torque output. It produces a maximum power of around 105 horsepower (78 kW) and a peak torque of approximately 265 lb-ft (359 Nm). This ample power and torque make it suitable for a wide range of construction equipment, including skid steers, compact excavators, and industrial power units.
The 4BT engine is known for its fuel efficiency, which is crucial in construction applications where fuel costs can be significant. It utilizes a direct injection fuel system, allowing for precise fuel delivery and optimal combustion efficiency. Additionally, the engine incorporates advanced technologies, such as a wastegate turbocharger and an efficient cooling system, to enhance fuel economy.
In terms of durability, the Cummins 4BT is built to withstand the rigors of construction sites. It features a robust design with heavy-duty components, including forged steel crankshafts, connecting rods, and pistons. The engine's low-stress design and efficient lubrication system contribute to its longevity, minimizing wear and tear and extending the engine's service life.
Another important aspect of the 4BT engine is its versatility. It can be adapted to various construction equipment configurations, thanks to its compact size and flexible installation options. The engine is available in both mechanical and electronic fuel system versions, catering to different equipment requirements and allowing for seamless integration into different machine designs.
Furthermore, the 4BT engine complies with stringent emissions regulations, ensuring environmental friendliness.
It incorporates advanced emission control technologies, such as an exhaust gas recirculation (EGR) system and a diesel oxidation catalyst (DOC), to reduce harmful pollutants. The engine's emissions compliance makes it suitable for use in areas with strict emission standards.
Maintenance and serviceability are also key considerations for construction equipment. The 4BT engine is designed with ease of maintenance in mind. It features a front-end accessory drive system that allows for easy access to the engine components, simplifying routine inspections and servicing. Additionally, Cummins provides a global network of service centers, ensuring prompt support and availability of genuine parts.
