Solenoid valves are critical control parts for brake-by-wire EHB, air suspension ASU and thermal management systems of new energy intelligent vehicles.
HOLS Automation’s custom non-standard turnkey assembly line integrates precision press-fitting, laser welding, multi-station helium leak testing, electrical parameter calibration and comprehensive EOL performance testing. Featuring full-process data traceability and closed-loop servo control, the line complies with IATF 16949 standards, enabling stable mass production of brake solenoid valves, suspension air control valves and thermal management electromagnetic valves for automotive Tier 1 manufacturers.
OV: pressure reducing valve (normally closed), IV: pressure increasing valve (normally open), controlling pressure release/entry;
SSV: pedal simulation isolation valve, PSV: master cylinder isolation valve, CSV: servo cylinder isolation valve, TC: isolation valve;Yield: ≥ 98%
✅ Full Core Process Implementation
🔹 Stroke Adjustment — Precision calibration of valve core travel to ensure accurate opening & closing displacement
🔹 Stroke Press-fitting — Servo-controlled constant-force pressing for stable stroke positioning
🔹 Air Gap Press-fitting — Strict air gap control to optimize magnetic circuit efficiency
🔹 Electromagnetic Force Press-fitting — One-step precise forming to lock standard electromagnetic output
🔹 Electromagnetic Force Retest — 100% inline re-inspection to eliminate parameter deviation
