Dongfeng GX ABS solenoid valve assembly 3550010-KG1X0

As a critical execution unit of the Dongfeng GX’s ABS, the 3550010-KG1X0 assembly is responsible for real-time, millisecond-level control of brake pressure to prevent wheel lock-up during emergency braking. When the ABS ECU detects impending wheel lock (via wheel speed sensors), it sends electrical signals to the solenoid valve, which rapidly switches between three states: 1) Pressure Build-Up: Opens the inlet valve to increase brake pressure, ensuring maximum braking force; 2) Pressure Holding: Closes both inlet and outlet valves to maintain stable pressure, balancing braking efficiency and wheel rotation; 3) Pressure Reduction: Opens the outlet valve to release excess pressure, allowing the wheel to regain traction. This cyclic regulation (up to 10 times per second) ensures the Dongfeng GX maintains steering control during hard braking—even on slippery surfaces like rain-soaked or icy roads—directly reducing accident risks

The 3550010-KG1X0 ABS solenoid valve assembly features a robust, wear-resistant structure built to withstand the harsh conditions of automotive brake systems—including high pressure, temperature fluctuations, and exposure to brake fluid/air contaminants. The valve body is constructed from high-grade stainless steel (e.g., 1.4401) or forged aluminum alloy (ADC12) with a corrosion-resistant finish, ensuring resistance to rust and degradation from brake fluid (for hydraulic variants) or compressed air moisture (for air variants). The internal solenoid core and valve spool use hardened steel with a smooth surface finish (Ra ≤ 0.8μm), minimizing friction and wear during frequent switching cycles. The electrical coil is insulated with high-temperature-resistant enameled wire (rated for 180°C), protecting it from heat generated by brake components (up to 120°C in typical use). Additionally, the valve’s sealing elements (e.g., nitrile rubber for hydraulic, fluororubber for air) maintain airtight/fluid-tight integrity even under extreme pressure (up to 15 MPa for hydraulic, 1.2 MPa for air), preventing leaks that could compromise ABS performance

The 3550010-KG1X0 is engineered with Dongfeng GX-specific technical parameters to ensure optimal ABS performance and reliability. For hydraulic variants: it supports a maximum working pressure of 10-15 MPa (matching the Dongfeng GX’s master cylinder output), has a response time of ≤20ms (critical for fast pressure adjustments), and a flow rate of 5-8 L/min (sufficient to quickly modulate brake fluid volume). For air variants: it operates within a pressure range of 0.6-1.0 MPa (standard for Dongfeng GX commercial models), features a flow capacity of 150-200 L/min, and a response time of ≤15ms. The electrical system operates on the Dongfeng GX’s standard 12V/24V on-board voltage, with a coil current of 2-5A (low enough to avoid excessive power consumption) and reverse polarity protection to prevent damage from wiring errors. Additionally, the valve’s leakage rate is ≤0.1 mL/min (hydraulic) or ≤1 L/min (air) at maximum pressure—ensuring no pressure loss when in the holding state

The 3550010-KG1X0 ABS solenoid valve assembly meets strict global automotive safety standards and undergoes rigorous testing to ensure reliability—critical for a component that directly impacts braking safety. It is manufactured in accordance with ISO/TS 16949 (automotive quality management system) and complies with ECE R13 (United Nations regulation for braking systems) and Chinese national standards (GB 12676). Each unit undergoes 100% factory testing, including: 1) Pressure cycle testing (100,000+ cycles to simulate long-term use); 2) Leakage testing (verifying no pressure loss); 3) Electrical performance testing (checking coil resistance, signal responsiveness); 4) Environmental testing (temperature cycling from -40°C to 120°C, vibration resistance per ISO 16750-3). To support customers, the assembly comes with a manufacturer’s warranty (typically 18 months or 150,000 kilometers) and access to technical support—including ABS system calibration guidance and troubleshooting assistance—making it a trusted choice for Dongfeng GX owners, fleet operators, and repair facilities