The VW Golf 7 features a range of transmission options, including manual, automatic, and dual-clutch (DSG) transmissions. Below is an overview of key transmission parts commonly found in the VW Golf 7:
Transmission Control Module (TCM): The TCM is an electronic component that manages the operation of the transmission, controlling gear shifts based on speed, engine load, and driving conditions. It ensures smooth and efficient gear changes.
Clutch: In manual transmission versions, the clutch allows the driver to engage and disengage the engine from the transmission, enabling smooth gear changes. In the DSG (dual-clutch) system, two clutches work in tandem to allow for seamless gear shifts without interrupting power flow.
Dual-Clutch Transmission (DSG): The DSG is a unique type of automatic transmission that uses two clutches—one for odd-numbered gears and one for even-numbered gears. This allows for faster, smoother gear shifts and improved performance compared to traditional automatic transmissions.
Gearbox: The gearbox contains the gears that transfer power from the engine to the wheels. In manual transmissions, the driver manually selects gears, while in automatic or DSG transmissions, gear selection is managed electronically.
Synchros: Synchros are used in manual transmissions to synchronize the speed of the gear and the shaft before they engage, allowing for smoother gear shifts and preventing gear grinding.
Shift Forks: These are components in the manual transmission that move the gears into place as the driver shifts through the gears. They play an important role in controlling which gear is engaged.
Torque Converter: In automatic transmission versions (non-DSG), the torque converter connects the engine to the transmission and allows the vehicle to come to a stop without stalling. It transfers engine power to the transmission and provides smooth acceleration.
Transmission Fluid: Transmission fluid is essential for lubricating and cooling the internal components of the transmission. It also plays a role in hydraulic functions, particularly in automatic transmissions.
Flywheel: The flywheel is a component in manual transmissions that connects the engine to the clutch. It helps store rotational energy and provides smooth engagement between the engine and transmission.
Valve Body: In automatic transmissions, the valve body is responsible for directing transmission fluid to the appropriate clutches and bands, controlling gear shifts.
Shift Solenoids: These are electronically controlled valves that manage the flow of transmission fluid in automatic and DSG transmissions, controlling gear shifts.
Mechatronic Unit (in DSG): The mechatronic unit is a combined hydraulic and electronic control system found in DSG transmissions. It controls gear shifts and the operation of the dual clutches, ensuring smooth and rapid transitions between gears.
Driveshafts: The driveshafts transfer power from the transmission to the wheels. They are critical for delivering the engine's power to the road.
CV Joints (Constant Velocity Joints): These joints allow the driveshaft to transmit power while accommodating the up-and-down movement of the suspension. They are important for maintaining smooth power delivery to the wheels, even during cornering and uneven road surfaces.
Differential: The differential is part of the transmission system that allows the wheels to rotate at different speeds, especially when turning. It helps distribute power to the wheels effectively.
Transmission Mounts: Transmission mounts secure the transmission to the vehicle’s chassis, reducing vibration and ensuring that the transmission stays in place during operation.
These transmission parts work together to provide smooth gear changes, efficient power delivery, and a comfortable driving experience. Regular maintenance, such as checking transmission fluid levels and replacing worn parts, is important for the longevity of the transmission in the VW Golf 7.