Cummins SmartTorque2 is a feature designed to optimize torque output based on driving conditions, improving fuel efficiency. However, there may be instances where disabling SmartTorque2 is desired. This article explores the integration of Cummins engine and transmission systems, focusing on features like SmartTorque2 and how they interact with other systems. We’ll also delve into potential methods for disabling or managing its effects.
Cummins has a long history of horizontal integration, optimizing engine and transmission performance. The 2020 X15 Efficiency Series and the 2021 EX ratings showcase this integration by seamlessly connecting the Cummins X15 engine, Endurant HD™ transmission, and GPS data. This synergy enables features designed to enhance fuel efficiency and drivability.
Four key features exclusive to X15 and X12 EX ratings are:
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On-Ramp Boost: Temporarily disables torque-limiting features for improved acceleration on highway on-ramps. This is one instance where Cummins systems inherently disable a torque-related function, albeit temporarily and automatically. Understanding this function can offer insight into how torque management works within the system.
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Predictive Gear Shifting: Optimizes gear selection and shift timing during cruise control using GPS data to maintain speed and minimize fuel consumption.
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Predictive Engine Braking: Calculates braking needs based on upcoming terrain, adjusting transmission downshifts for optimal braking performance.
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Dynamic Power: Modifies torque output based on operating conditions. When full torque isn’t necessary, the system reduces it to conserve fuel. This feature directly interacts with SmartTorque2.
In addition to these features, EX ratings incorporate ADEPT™ features: SmartCoast™, Accelerator Coast Management, SmartTorque2, and Predictive Cruise Control.
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SmartCoast & Accelerator Coast Management: Allows the engine to idle when positive torque isn’t required, leveraging momentum for fuel savings.
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SmartTorque2: Provides up to 200 lb.-ft. of extra torque when needed based on road grade, vehicle weight, and gear. While beneficial for power, understanding its activation parameters can help manage its impact.
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Predictive Cruise Control: Adjusts speed based on upcoming terrain to optimize fuel efficiency.
While ADEPT features are available on all X15 Efficiency and X12 engines, they must be enabled. EX ratings include ADEPT settings by default due to their integration with the Endurant HD transmission and map data. This suggests that disabling SmartTorque2 might involve adjusting settings related to ADEPT or the transmission configuration.
Directly disabling SmartTorque2 might not be a user-accessible option. However, its effect can be managed by understanding its interaction with other features like Dynamic Power. Modifying driving habits and cruise control settings can influence when SmartTorque2 engages. Consulting official Cummins documentation or authorized service centers may provide specific guidance on managing SmartTorque2’s impact on your vehicle.
For further information on Cummins electronic engine features, refer to the Cummins PowerSpec website (powerspecweb.cummins.com). Look for the Feature Description tab for detailed explanations.
