VT2

1.Hydraulic Pressure Generation for Clutch Operation

As the heart of the hydraulic control system in the VT2 transmission, the master cylinder is responsible for converting the mechanical force exerted on the clutch pedal (or the force from an electronic actuator in electronically - controlled systems) into hydraulic pressure. This pressurized hydraulic oil is then transmitted to the slave cylinder, which in turn actuates the clutch. By precisely controlling the hydraulic pressure, the master cylinder enables smooth and accurate clutch engagement and disengagement, ensuring seamless power transfer between the engine and the transmission during vehicle start - up, gear changes, and normal driving.

2.Pressure Regulation and Transmission

It plays a crucial role in regulating the hydraulic pressure within the transmission's hydraulic circuit. The master cylinder not only generates the initial pressure but also adjusts it based on driving conditions. For example, during sudden acceleration or when the vehicle is under heavy load, it can increase the hydraulic pressure to ensure a firm clutch engagement and efficient power transmission. Conversely, during light - load driving or when coasting, it can reduce the pressure to optimize fuel efficiency. The built - in pressure - regulating valve constantly monitors and adjusts the pressure to maintain optimal clutch performance across a wide range of driving scenarios.

3.Shift Timing Synchronization

Working in close coordination with the VT2 transmission's control unit (TCU), the master cylinder executes clutch operations with precise timing during gear shifts. The TCU sends signals based on various factors such as vehicle speed, engine load, and driver input. In response, the master cylinder adjusts the hydraulic pressure to the slave cylinder at the exact moment required for a gear shift. This synchronization ensures minimal power interruption during gear transitions, maintaining the driving comfort and efficiency characteristic of Geely VT2 - equipped vehicles.

4.Overpressure Protection

To safeguard the transmission system from damage due to excessive hydraulic pressure, the master cylinder is equipped with an overpressure protection mechanism. This typically includes a safety relief valve that automatically opens when the pressure within the master cylinder exceeds a pre - determined safe threshold (e.g., ≥2.5MPa). By releasing the excess pressure, the valve prevents potential damage to the master cylinder, slave cylinder, hydraulic lines, and other sensitive components within the transmission's hydraulic system, thereby enhancing the overall reliability of the system.

5.Status Monitoring (for Electronic Versions)

In electronically - controlled Geely VT2 master cylinders, a pressure sensor is integrated to continuously monitor the hydraulic pressure. This sensor feeds real - time data on the pressure level to the TCU. The TCU can then analyze this data to detect any anomalies, such as a sudden drop in pressure, inconsistent pressure output, or a pressure spike. In the event of an abnormal condition, the TCU can trigger diagnostic warnings, which may include illuminating a warning light on the vehicle's dashboard. This early detection and warning system facilitate timely maintenance and helps prevent potential transmission failures.