A ________ is a graph that represents the engine torque as a function of the engine's ability to make power.

A ________ is a graph that represents the engine torque as a function of the engine's ability to make power.

• A. Torque Curve
• B. Torque Map
• C. Engine Power Curve
• D. Torque Table

Answer: (A)

A torque curve is the graph that shows how engine torque changes with RPM, i.e., how much twisting force the engine can deliver at different speeds. This makes it the best fit for the description because it visually represents the engine’s ability to produce torque across the operating range, including where peak torque occurs and how it falls off at higher or lower RPMs. A torque map is typically a two-dimensional calibration grid (or a 3D surface) used in tuning, showing torque across multiple variables like RPM and load, which isn’t just a simple single-graph representation. An engine power curve plots horsepower versus RPM, which is related to torque but is a different curve since power is torque times RPM (divided by a constant). A torque table is simply a set of discrete torque numbers, not a graph.

A torque curve is the graph that shows how engine torque changes with RPM, i.e., how much twisting force the engine can deliver at different speeds. This makes it the best fit for the description because it visually represents the engine’s ability to produce torque across the operating range, including where peak torque occurs and how it falls off at higher or lower RPMs.

A torque map is typically a two-dimensional calibration grid (or a 3D surface) used in tuning, showing torque across multiple variables like RPM and load, which isn’t just a simple single-graph representation. An engine power curve plots horsepower versus RPM, which is related to torque but is a different curve since power is torque times RPM (divided by a constant). A torque table is simply a set of discrete torque numbers, not a graph.