t£ Technical Design Change 2 Airway flow: 0-1L Per Minute 3 Work pressure: From 0 Mpa--0.025 Mpa 4. Always close type 5. Connected Gate: Dia. 5.1 mm, type: IS015170 A3-2.1-sn/K2 1 Insulation Resistance: between coil and frame : 3 Temperature Rise: Max 65 ( 20 °C DC 5 V testing on 1 S on 5 S off) 4: Lifespan : 200,000 shots (20 °C at DC 5 V, 1 S on, 5 S Off ) 5 Coil and lead wire strength : 1 kg Dimension Without Tolerance Weilong Intelligent Technology (Dongguan)Co., Ltd.,

WL106629 SCR Solenoid Valve Application A SCR solenoids finds wide applications in precise DEF injection, in processing of exhaust gases in diesel engines. These devices serve to control the amount of Diesel Exhaust Fluid supplied to SCR catalyst system. The SCR Solenoid is frequently found in automotive sector in heavy trucks, buses, pick up trucks, commercial vehicles and passenger diesel vehicles. Agricultural equipment including various types of tractors and harvesters, where there is a significant usage of diesel engines, cannot work without SCR solenoid. Solenoids for SCR are widely used...

TECHNICAL HIGHLIGHTS High Precision Urea Dosing Control Solution Fast Response Time ©Corrosion Resistant Housing

Spring resets plunger and doses valve. SCR SOLENOID- WORKING PRINCIPLE - r 1 TECHNICAL BENEFITS (0) Efficient SCR Emission Control Technology

SCR SOLENOID STRUCTURE & MAIN COMPONENTS ///////// WATERPROOF CONNECTOR COPPER COIL STAINLESS STEEL HOUSING PRECISION PLUNGER - RETURN SPRING -SEAL RING • VALVE SEAT * MAIN MATERIAL ADVANTAGES Q/ High Conductivity Copper Coil Qj SUS Stainless Steel Body Q/ High Temperature Rubber Seal Q/ Anti-Corrosion Surface Treatment PERFORMANCE ADVANTAGES (y/j Stable Magnetic Force (Vy Low Heat Generation @ Long Continuous Working Duty Qj Excellent Sealing Performance DESIGNED FOR HARSH AUTOMOTIVE EXHAUST ENVIRONMENTS

AUTO PARTS PASS ! PASS WL 106629 SCR Solenoid Performance Testing Report TESTING EQUIPMENT Each solenoid is tested using precision testing equipment to ensure reliable performance and consistent quality. Voltage Test Coil Power Working Pressure Range Duty Cycle 100%Factory Tested Before Shipment

QUALITY ASSURANCE PROCESS FACTORY INSPECTION PROCESS 1. RAW MATERIAL Incoming Material Inspection «g 2. COIL WINDING Precision Coil Winding Process Component Assembly & Integration Functional Performance Testing Final Quality Inspection QUALITY CONTROL FEATURES 6. PACKAGING Secure Packaging & Labeling_ Reliable Automotive Grade Manufacturing Process

^ ^ Confirm Voltage Requirement CD Check Duty Cycle^ Q. Verify Connector TypeH—•H Confirm Stroke Distance {^) Check Flow Rate Requirement d) Verify Operating Temperature Confirm Installation Dimension Duty Cycle: Connector Type: AMP / Deutsch / Superseal ES Ask ^or Cycle Testing Report Mounting Dimension (Bottom View)