What is Torque Overrun Lock?
2 Answers
Differential lock is equivalent to a rigid connection. The power output from the engine remains unchanged, and the force transmitted to the wheels will not change. If one wheel has less grip, it means the force feedback is smaller. Since force is mutual, a smaller force feedback implies that side is subjected to less force. Therefore, the remaining force is transmitted to the other side, resulting in more torque distribution on that side. Introduction to Limited-Slip Differential: The Limited-Slip Differential, abbreviated as LSD, is an improved type of differential designed to limit wheel slip. It allows a certain range of speed difference between the two driving wheels to ensure normal driving performance, such as during turns. In fact, LSD can be divided into several types based on its construction, each with its own unique features. Functional Principle of Limited-Slip Differential: Before discussing the LSD mechanism, it is essential for readers to first understand the function and operational principle of a differential. The operational principle of the differential itself is quite complex and falls under professional-level construction. To explain the design function and necessity of the original differential in a way that is easy to understand, we will use everyday phenomena and situations that are most familiar to readers.
Last time I helped my neighbor check his car, I encountered this issue. His car suddenly couldn't accelerate and the malfunction light came on. Simply put, the onboard computer detected that the actual power output of the engine was way off from its calculated expected value, so it directly locked the power to protect the engine. Common causes include intake leaks, faulty sensors, or clogged fuel injectors. For his older car, it was carbon buildup on the mass airflow sensor tricking the computer. After cleaning it and clearing the fault code, it was fine. This protection mechanism is especially prone to triggering during hard acceleration, feeling like someone stepped on the brakes. If left untreated, it could also lead to increasing fuel consumption over time.
