What is the difference between a 7-speed dual-clutch and an 8-speed automatic manual transmission?
2 Answers
The differences between a 7-speed dual-clutch and an 8-speed automatic manual transmission are as follows: 1. The 7-speed dual-clutch is more fuel-efficient than the 8-speed automatic manual transmission. 2. The 7-speed dual-clutch shifts faster than the 8-speed automatic manual transmission. 3. The 8-speed automatic manual transmission has 8 levels of gear shifting, one more than the 7-speed dual-clutch's 7 levels. More details are as follows: 1. The 7-speed dual-clutch represents a transmission that can achieve 7 levels of gear shifting. The dual-clutch means that the clutch can engage and disengage simultaneously, primarily to make gear shifts smoother and reduce jerking. However, this may not be very noticeable in regular cars and is almost the same as an 8-speed automatic manual transmission, only becoming apparent in racing cars. 2. Compared to automatic transmissions, dual-clutch transmissions are more fuel-efficient. Theoretically, dual-clutch transmissions shift faster than automatic transmissions and offer better handling. 3. The 8-speed automatic manual transmission means the transmission has 8 levels of gear shifting. The automatic manual transmission combines manual and automatic transmissions, allowing the driver to choose between manual or automatic mode. In manual mode, since there is no clutch, it functions similarly to an AMT transmission, but the highest gear in manual mode is the 8th gear, while in automatic mode, it operates like an AT transmission.
What's the difference between a 7-speed dual-clutch transmission and an 8-speed automatic transmission with manual mode? I think the main differences lie in the working principle and driving experience. The dual-clutch transmission relies on two sets of clutches, one managing odd gears and the other even gears, resulting in faster gear shifts, higher efficiency, and a more exciting drive, especially in manual mode where the control feels stronger. On the other hand, the 8-speed automatic transmission with manual mode uses a torque converter and a multi-gear structure, delivering smoother and gentler gear shifts, making it feel like driving a luxury car, with more gears helping save fuel at high speeds. The choice depends on different considerations: in congested urban traffic, the 7-speed dual-clutch responds quickly but may cause jerks; for long-distance cruising, the 8-speed automatic transmission is quieter and more worry-free. Transmission technology evolves rapidly, so when choosing a car, it's essential to match it with your driving habits.