ISX12

The ISX12 is a medium-duty diesel engine developed by Cummins Inc., a leading manufacturer of internal combustion engines. Introduced in the early 2000s, it is part of Cummins' Inline Six (ISX) engine family, designed primarily for heavy-duty applications such as trucks, buses, and industrial machinery.

The ISX12 features a 12.7-liter (775 cubic inches) displacement and is available in various power ratings, typically ranging from approximately 300 to 450 horsepower (220 to 335 kilowatts) and 1,000 to 1,600 lb-ft (1,360 to 2,170 Nm) of torque, depending on the specific model and configuration. It employs a turbocharged, intercooled, direct-injection (TDI) system to enhance performance and efficiency. The engine also incorporates advanced technologies such as electronic engine control (EEC) for optimized fuel delivery and emissions compliance.

The ISX12 is known for its durability and reliability, making it a popular choice for commercial fleets. It adheres to stringent emissions standards, including the U.S. Environmental Protection Agency's (EPA) regulations and the European Union's Euro VI standards, ensuring compliance with modern environmental requirements. The engine is also designed with features such as a common rail fuel system, variable geometry turbocharging, and an aftertreatment system to further reduce emissions.

Cummins offers the ISX12 in various configurations, including both naturally aspirated and turbocharged versions, as well as different cooling and power output options. It is widely used in on-highway trucks, including Class 8 heavy-duty models, as well as in off-highway applications such as construction equipment and marine vessels. The engine's robust design and proven performance have contributed to its reputation as a dependable workhorse in the commercial transportation industry.