Detroit DT12-OB Transmission

The Detroit DT12-OB is a fully automated manual transmission (AMT) designed for heavy-duty trucks, offering advanced technology to improve both vehicle performance and fuel efficiency. Part of Detroit’s Powertrain offering, the DT12-OB is engineered to work seamlessly with Detroit’s line of high-performance engines, such as the Detroit DD13®, DD15®, and DD16®, providing an integrated system optimized for durability, power, and efficiency in demanding applications. The DT12-OB is the ideal choice for long-haul trucking, vocational work, and regional delivery, offering excellent performance in both highway and city driving.

The DT12-OB transmission provides superior automated shifting capabilities, reducing the need for driver intervention while improving operational efficiency. By eliminating the need for manual gear selection and clutch control, this transmission minimizes driver fatigue and enhances the overall driving experience. The DT12-OB is designed to maximize fuel economy, reduce maintenance costs, and deliver high reliability for commercial vehicles.

Key Features of the Detroit DT12-OB Transmission

1. Fully Automated Manual Transmission (AMT): The DT12-OB is a fully automated manual transmission, which means it automatically handles gear shifting and clutch engagement. The system is capable of adapting to driving conditions, adjusting shift points, and managing power delivery, ensuring smooth operation at all times.
2. Optimized for Fuel Efficiency: One of the primary benefits of the DT12-OB transmission is its ability to improve fuel efficiency. By utilizing intelligent shift algorithms, the transmission ensures that the engine operates at optimal fuel economy levels. This results in better MPG and lower overall fuel costs for long-distance fleets and owner-operators.
3. Advanced Shift Control Technology: The DT12-OB features advanced shift control technology, which provides precise, smooth gear shifts in both city and highway driving conditions. The system ensures that shifts are quick and efficient, improving overall performance and reducing wear on components. This contributes to better drivability and reduces the likelihood of powertrain issues over time.
4. Driver Comfort: By eliminating the need for clutch pedal usage and manual gear selection, the DT12-OB transmission provides a more relaxed driving experience, especially during long-haul trips or when navigating challenging terrain. Drivers can focus on steering, braking, and road awareness, leading to less fatigue and stress during operation.
5. Durability and Reliability: The DT12-OB is built for heavy-duty use, with high-strength materials and advanced engineering to ensure long-term durability in harsh operating conditions. Its robust design is intended to withstand high torque and heavy loads, making it perfect for demanding applications in the transportation, construction, and logistics industries.
6. Seamless Integration with Detroit Engines: The DT12-OB transmission works in perfect harmony with Detroit engines like the DD13®, DD15®, and DD16®, offering a fully integrated powertrain system. This ensures optimized performance and maximized fuel efficiency by enabling the engine and transmission to work in sync, delivering the best possible output while minimizing fuel consumption.
7. Multiple Driving Modes: The DT12-OB features different driving modes that allow drivers to select the best setting for the driving environment. These modes include Economy Mode, Performance Mode, and Manual Mode, giving the driver full control over the vehicle’s performance and fuel consumption. The versatility of the system allows it to adapt to various applications and road conditions, making it ideal for a wide range of commercial vehicles.

Benefits of the Detroit DT12-OB Transmission

1. Improved Fuel Economy: The automated transmission system of the DT12-OB maximizes fuel efficiency through intelligent shift patterns, helping reduce overall fuel consumption, which is a key factor in reducing operating costs for fleet owners and truck operators.
2. Enhanced Driver Comfort: With the elimination of the need for manual shifting and clutch operation, the DT12-OB transmission provides a more comfortable driving experience, which helps reduce driver fatigue, especially on long hauls or in heavy traffic conditions.
3. Superior Performance: The DT12-OB is engineered to handle high torque and heavy payloads with ease, ensuring high performance across a wide range of driving conditions. Whether driving on highways, rough roads, or up steep inclines, the transmission adapts to the environment and delivers the required power seamlessly.
4. Reduced Maintenance Costs: Designed for low maintenance, the DT12-OB transmission requires fewer repairs and extended service intervals, keeping your truck on the road longer and reducing overall maintenance costs. The synthetic fluid and automated system reduce wear and tear compared to traditional manual transmissions.
5. Durability and Long Service Life: Built with high-strength components and materials, the DT12-OB is designed for long-lasting reliability, making it ideal for the most demanding applications. Its durability ensures that it can withstand tough environments, providing peace of mind for operators and fleet owners.
6. Seamless Powertrain Integration: The DT12-OB transmission works perfectly with Detroit’s engines, ensuring that the entire powertrain system is optimized for maximum performance and fuel economy. This integration helps eliminate performance mismatches and delivers the best overall system efficiency.

Technical Specifications:

• Transmission Type: Fully Automated Manual Transmission (AMT)
• Number of Gears: 12 forward gears and 2 reverse gears
• Max Gross Vehicle Weight (GVW): Suitable for vehicles up to 80,000 lbs (36,287 kg)
• Max Torque Capacity: Up to 1,850 lb-ft (2,500 Nm)
• Clutch Type: Automated clutch system (no manual clutch pedal required)
• Gear Ratios:
  • 1st Gear Ratio: 16.24:1 (ideal for heavy load starts and steep inclines)
  • 12th Gear Ratio: 0.74:1 (for high-efficiency cruising at highway speeds)
  • Reverse Gear Ratio: 16.24:1
• Weight: Approximately 380-420 lbs (varies depending on configuration)
• Shift Control: Fully automated system with options for Economy Mode, Performance Mode, and Manual Mode
• Cooling System: Integrated cooling system to maintain optimal transmission temperatures
• Lubrication: Uses synthetic transmission fluid for extended service life and performance
• Maintenance: Recommended fluid and filter changes at 500,000 miles (800,000 km), depending on vehicle usage and application
• Primary Applications: Suitable for long-haul trucking, regional freight operations, and vocational applications such as construction, tanker hauling, and freight hauling
• Powertrain Compatibility: Designed for use with Detroit DD13®, DD15®, and DD16® engines

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