What does semi-joint braking mean?

[LorenzoDella]

Semi-joint generally refers to the semi-engagement of the clutch, which is an unstable connection working state of the clutch. That is, the driver steps on the clutch pedal, gradually reducing the pressure of the clutch pressure plate, causing the driving plate and the driven plate to be in a state of both rotating and slipping. Manual transmission cars often require semi-engagement to handle many situations, but prolonged semi-engagement can lead to clutch wear. Methods to determine the semi-engagement point of the car clutch when starting on a slope: 1. Listen for changes in the engine sound: When the clutch is lifted to the semi-engagement point, the engine begins to transmit power backward, consuming engine power, thus the engine speed drops, and the sound becomes noticeably smaller. At this point, the clutch has been lifted to the semi-engagement point. 2. Feel the foot sensation while driving: When the clutch is lifted to the semi-engagement point, there is a slight upward push sensation on the clutch pedal, which can also indicate that the clutch has been lifted to the semi-engagement point.