150500273

The 150500273 Clutch Control Unit inherits the basic control framework of Volkswagen's DQ200 series (clutch engagement, gearshift execution, adaptive adjustment, fault protection) but has technical differences from the 150500274 in hardware configuration and algorithm optimization—focusing on solving the reliability issues of early dry DCT rather than pursuing cost reduction.

Dry Clutch Electro-Hydraulic Control System (Reliability-Oriented)

Based on the closed-loop control algorithm of the first-generation DQ200 control module, this unit optimizes the hydraulic pressure stability and clutch heat dissipation control. It integrates a medium-pressure fixed-displacement gear pump (maximum pressure 14 MPa, 17% higher than 150500274) and 9 precision solenoid valves (1 more than 150500274, adding a dedicated clutch cooling control valve). It collects real-time signals from 15 key sensors (1 more than 150500274, adding a clutch friction plate wear sensor) to monitor dry clutch status more comprehensively. The data processing relies on a dual-core Infineon AURIX TC1782 MCU (operating frequency up to 133 MHz, 17% lower than 150500274) with mature stability but lower processing efficiency.

Stable Torque Clutch Engagement: For early models such as Volkswagen Golf 7 1.4T, the control unit controls the clutch engagement pressure gradient to 0.18 MPa/10 ms (10% lower than 150500274). When accelerating from a standstill, it adjusts the pressure of clutch K1 from 0 to 9 MPa in 130 ms—slower than 150500274 but with a pressure fluctuation range of ±0.12 MPa (20% narrower than 150500274), ensuring stable transmission of 250 N·m peak torque and reducing low-speed jitter;

Enhanced Dry Clutch Temperature Management: Aiming at the overheating problem of early dry DCT, the unit adds a "clutch cooling oil spray control" function (not available in 150500274). When the clutch temperature exceeds 105℃ (5℃ lower than 150500274's threshold), it activates the dedicated cooling solenoid valve to spray ATF oil onto the clutch friction plate (spray flow 0.3 L/min), reducing the clutch temperature by 8-12℃ within 5 minutes—more direct than 150500274's slip rate adjustment;

Front-Wheel Drive Stability Control: For early front-wheel drive models with immature ESC coordination, the control unit establishes a priority communication channel with the ESC system, with a communication delay of less than 120 ms (20% lower than 150500274). When the front wheel slip rate exceeds 12% (3% lower than 150500274), it immediately reduces the clutch engagement pressure by 0.8 MPa to avoid torque shock and improve driving stability on slippery roads.