What is the difference between dry and wet clutches?
2 Answers
The differences between dry and wet clutches are as follows: (1) The service life of dry clutches is shorter than that of wet clutches. 1. The friction pair of a dry clutch is exposed to the air, and the friction plates experience dry friction during engagement and braking, resulting in significant wear, high temperatures, and a relatively short service life for the friction plates. 2. The friction pair of a wet clutch is enclosed within the flywheel cavity and uses oil immersion lubrication. The friction plates operate under oil-immersed friction during engagement and braking, forming an oil film between them, which minimizes wear and reduces temperature rise, thereby extending the service life of the friction plates. (2) Dry clutches have a simple structure, lower cost, and can cause environmental pollution, while wet clutches are the opposite. 1. Dry clutches have a simple structure and lower manufacturing costs. When the friction plates wear, metal particles can easily disperse into the air due to their exposed nature, potentially polluting the environment or damaging product surfaces. 2. Wet clutches have a more complex structure and higher manufacturing costs. The particles generated from normal wear of the friction plates are carried out through regular oil changes, preventing air pollution and adverse effects on products. (3) Dry clutches produce more noise during operation than wet clutches. 1. Due to the uncontrollable temperature rise of dry clutch friction plates, the overall performance of the clutch is unstable, leading to louder operating noise. 2. The specially customized friction materials in wet clutches provide excellent thermal stability, ensuring stable overall performance. The enclosed structure also results in very low noise during operation.
The differences between dry and wet clutches are quite significant. Dry clutches are not immersed in oil, featuring a simple structure and light weight, with heat dissipation relying on air, making them cheaper and more fuel-efficient. However, they struggle in traffic jams. For example, when I drive in the city with frequent traffic lights, constant starts and semi-engagement can easily overheat the clutch plates, leading to noticeable gearshift jerks and a burnt smell over time. Wet clutches, on the other hand, are fully immersed in oil, which helps with heat dissipation and lubrication, offering higher durability and smoother gear shifts on mountain roads or highways. However, wet clutches have a more complex structure, require specialized oil changes during maintenance, and come with higher repair costs. Overall, dry clutches are suitable for budget-conscious owners who often drive on highways, while wet clutches are better for those prioritizing comfort and durability.
